/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/pthread/fib_bench-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-11af1e5 [2020-10-09 10:35:21,734 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-09 10:35:21,737 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-09 10:35:21,761 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-09 10:35:21,762 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-09 10:35:21,763 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-09 10:35:21,764 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-09 10:35:21,766 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-09 10:35:21,767 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-09 10:35:21,768 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-09 10:35:21,769 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-09 10:35:21,773 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-09 10:35:21,773 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-09 10:35:21,774 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-09 10:35:21,778 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-09 10:35:21,779 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-09 10:35:21,780 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-09 10:35:21,782 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-09 10:35:21,786 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-09 10:35:21,788 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-09 10:35:21,790 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-09 10:35:21,791 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-09 10:35:21,792 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-09 10:35:21,793 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-09 10:35:21,798 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-09 10:35:21,800 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-09 10:35:21,801 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-09 10:35:21,802 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-09 10:35:21,802 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-09 10:35:21,804 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-09 10:35:21,804 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-09 10:35:21,805 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-09 10:35:21,807 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-09 10:35:21,808 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-09 10:35:21,809 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-09 10:35:21,809 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-09 10:35:21,810 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-09 10:35:21,810 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-09 10:35:21,810 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-09 10:35:21,820 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-09 10:35:21,824 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-09 10:35:21,825 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-09 10:35:21,872 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-09 10:35:21,872 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-09 10:35:21,873 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-09 10:35:21,873 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-09 10:35:21,874 INFO L138 SettingsManager]: * Use SBE=true [2020-10-09 10:35:21,874 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-09 10:35:21,874 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-09 10:35:21,874 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-09 10:35:21,874 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-09 10:35:21,875 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-09 10:35:21,875 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-09 10:35:21,875 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-09 10:35:21,876 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-09 10:35:21,876 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-09 10:35:21,876 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-09 10:35:21,876 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-09 10:35:21,877 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-09 10:35:21,877 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-09 10:35:21,877 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-09 10:35:21,877 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-09 10:35:21,877 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-09 10:35:21,878 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-09 10:35:21,878 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-09 10:35:21,879 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-09 10:35:21,879 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-09 10:35:21,879 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-09 10:35:21,879 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-09 10:35:21,880 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-09 10:35:21,880 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-09 10:35:21,880 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-09 10:35:22,189 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-09 10:35:22,199 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-09 10:35:22,202 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-09 10:35:22,206 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-09 10:35:22,206 INFO L275 PluginConnector]: CDTParser initialized [2020-10-09 10:35:22,207 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/fib_bench-2.i [2020-10-09 10:35:22,277 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2b0b3c580/27d695432bef49bc90f3ed1a698d5913/FLAG7debf8cbd [2020-10-09 10:35:22,769 INFO L306 CDTParser]: Found 1 translation units. [2020-10-09 10:35:22,770 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/fib_bench-2.i [2020-10-09 10:35:22,789 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2b0b3c580/27d695432bef49bc90f3ed1a698d5913/FLAG7debf8cbd [2020-10-09 10:35:23,065 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2b0b3c580/27d695432bef49bc90f3ed1a698d5913 [2020-10-09 10:35:23,073 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-09 10:35:23,078 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-09 10:35:23,079 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-09 10:35:23,079 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-09 10:35:23,083 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-09 10:35:23,084 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.10 10:35:23" (1/1) ... [2020-10-09 10:35:23,087 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ff0b7b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 10:35:23, skipping insertion in model container [2020-10-09 10:35:23,087 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.10 10:35:23" (1/1) ... [2020-10-09 10:35:23,096 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-09 10:35:23,136 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-09 10:35:23,542 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-09 10:35:23,552 INFO L203 MainTranslator]: Completed pre-run [2020-10-09 10:35:23,603 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-09 10:35:23,691 INFO L208 MainTranslator]: Completed translation [2020-10-09 10:35:23,692 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 10:35:23 WrapperNode [2020-10-09 10:35:23,693 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-09 10:35:23,696 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-09 10:35:23,696 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-09 10:35:23,696 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-09 10:35:23,706 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 10:35:23" (1/1) ... [2020-10-09 10:35:23,749 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 10:35:23" (1/1) ... [2020-10-09 10:35:23,780 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-09 10:35:23,781 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-09 10:35:23,781 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-09 10:35:23,781 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-09 10:35:23,791 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 10:35:23" (1/1) ... [2020-10-09 10:35:23,791 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 10:35:23" (1/1) ... [2020-10-09 10:35:23,799 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 10:35:23" (1/1) ... [2020-10-09 10:35:23,799 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 10:35:23" (1/1) ... [2020-10-09 10:35:23,819 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 10:35:23" (1/1) ... [2020-10-09 10:35:23,828 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 10:35:23" (1/1) ... [2020-10-09 10:35:23,830 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 10:35:23" (1/1) ... [2020-10-09 10:35:23,842 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-09 10:35:23,842 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-09 10:35:23,842 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-09 10:35:23,842 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-09 10:35:23,845 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 10:35:23" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-09 10:35:23,926 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2020-10-09 10:35:23,926 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2020-10-09 10:35:23,926 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2020-10-09 10:35:23,927 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2020-10-09 10:35:23,927 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-09 10:35:23,927 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-09 10:35:23,927 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-09 10:35:23,927 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-09 10:35:23,928 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-09 10:35:23,928 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-09 10:35:23,928 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-09 10:35:23,930 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-09 10:35:24,256 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-09 10:35:24,256 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-10-09 10:35:24,258 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.10 10:35:24 BoogieIcfgContainer [2020-10-09 10:35:24,258 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-09 10:35:24,259 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-09 10:35:24,260 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-09 10:35:24,266 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-09 10:35:24,266 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.10 10:35:23" (1/3) ... [2020-10-09 10:35:24,267 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fcdcdde and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.10 10:35:24, skipping insertion in model container [2020-10-09 10:35:24,267 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 10:35:23" (2/3) ... [2020-10-09 10:35:24,268 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fcdcdde and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.10 10:35:24, skipping insertion in model container [2020-10-09 10:35:24,268 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.10 10:35:24" (3/3) ... [2020-10-09 10:35:24,270 INFO L111 eAbstractionObserver]: Analyzing ICFG fib_bench-2.i [2020-10-09 10:35:24,283 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-09 10:35:24,283 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-09 10:35:24,290 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-09 10:35:24,291 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-09 10:35:24,317 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 10:35:24,317 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 10:35:24,317 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 10:35:24,318 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 10:35:24,318 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 10:35:24,319 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 10:35:24,319 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 10:35:24,319 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 10:35:24,319 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 10:35:24,320 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 10:35:24,320 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 10:35:24,320 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 10:35:24,320 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 10:35:24,321 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 10:35:24,321 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 10:35:24,321 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 10:35:24,322 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 10:35:24,322 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 10:35:24,322 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 10:35:24,322 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 10:35:24,323 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 10:35:24,323 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 10:35:24,323 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 10:35:24,329 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 10:35:24,330 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 10:35:24,330 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 10:35:24,330 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 10:35:24,330 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 10:35:24,331 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 10:35:24,331 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 10:35:24,340 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 10:35:24,340 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 10:35:24,340 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 10:35:24,341 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 10:35:24,341 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 10:35:24,341 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 10:35:24,349 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 10:35:24,349 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 10:35:24,349 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 10:35:24,350 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 10:35:24,350 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 10:35:24,350 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 10:35:24,371 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-10-09 10:35:24,392 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-09 10:35:24,392 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-09 10:35:24,392 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-09 10:35:24,393 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-09 10:35:24,393 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-09 10:35:24,393 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-09 10:35:24,393 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-09 10:35:24,393 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-09 10:35:24,411 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-09 10:35:24,414 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 59 places, 57 transitions, 124 flow [2020-10-09 10:35:24,417 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 59 places, 57 transitions, 124 flow [2020-10-09 10:35:24,420 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 59 places, 57 transitions, 124 flow [2020-10-09 10:35:24,492 INFO L129 PetriNetUnfolder]: 5/55 cut-off events. [2020-10-09 10:35:24,492 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-09 10:35:24,500 INFO L80 FinitePrefix]: Finished finitePrefix Result has 62 conditions, 55 events. 5/55 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 84 event pairs, 0 based on Foata normal form. 0/49 useless extension candidates. Maximal degree in co-relation 43. Up to 2 conditions per place. [2020-10-09 10:35:24,505 INFO L117 LiptonReduction]: Number of co-enabled transitions 1032 [2020-10-09 10:35:25,736 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 60 [2020-10-09 10:35:25,822 INFO L132 LiptonReduction]: Checked pairs total: 943 [2020-10-09 10:35:25,822 INFO L134 LiptonReduction]: Total number of compositions: 50 [2020-10-09 10:35:25,830 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 20 places, 16 transitions, 42 flow [2020-10-09 10:35:25,843 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 44 states. [2020-10-09 10:35:25,845 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2020-10-09 10:35:25,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-10-09 10:35:25,852 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:35:25,853 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-10-09 10:35:25,854 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:35:25,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:35:25,860 INFO L82 PathProgramCache]: Analyzing trace with hash -1506398721, now seen corresponding path program 1 times [2020-10-09 10:35:25,873 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:35:25,873 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047779205] [2020-10-09 10:35:25,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:35:26,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:35:26,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:35:26,104 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047779205] [2020-10-09 10:35:26,105 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-09 10:35:26,105 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-09 10:35:26,106 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112570363] [2020-10-09 10:35:26,112 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-09 10:35:26,113 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:35:26,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-09 10:35:26,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-09 10:35:26,131 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 4 states. [2020-10-09 10:35:26,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:35:26,208 INFO L93 Difference]: Finished difference Result 83 states and 212 transitions. [2020-10-09 10:35:26,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-09 10:35:26,211 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2020-10-09 10:35:26,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:35:26,224 INFO L225 Difference]: With dead ends: 83 [2020-10-09 10:35:26,224 INFO L226 Difference]: Without dead ends: 54 [2020-10-09 10:35:26,226 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-09 10:35:26,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-09 10:35:26,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 50. [2020-10-09 10:35:26,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-10-09 10:35:26,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 120 transitions. [2020-10-09 10:35:26,272 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 120 transitions. Word has length 6 [2020-10-09 10:35:26,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:35:26,272 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 120 transitions. [2020-10-09 10:35:26,273 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-09 10:35:26,273 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 120 transitions. [2020-10-09 10:35:26,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-09 10:35:26,274 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:35:26,274 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:35:26,274 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-09 10:35:26,275 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:35:26,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:35:26,275 INFO L82 PathProgramCache]: Analyzing trace with hash 235327157, now seen corresponding path program 1 times [2020-10-09 10:35:26,275 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:35:26,276 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503939513] [2020-10-09 10:35:26,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:35:26,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:35:26,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:35:26,396 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503939513] [2020-10-09 10:35:26,396 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-09 10:35:26,396 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-09 10:35:26,396 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753546487] [2020-10-09 10:35:26,398 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-09 10:35:26,398 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:35:26,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-09 10:35:26,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-09 10:35:26,399 INFO L87 Difference]: Start difference. First operand 50 states and 120 transitions. Second operand 5 states. [2020-10-09 10:35:26,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:35:26,454 INFO L93 Difference]: Finished difference Result 80 states and 186 transitions. [2020-10-09 10:35:26,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-09 10:35:26,454 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2020-10-09 10:35:26,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:35:26,456 INFO L225 Difference]: With dead ends: 80 [2020-10-09 10:35:26,457 INFO L226 Difference]: Without dead ends: 75 [2020-10-09 10:35:26,457 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-09 10:35:26,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-10-09 10:35:26,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 55. [2020-10-09 10:35:26,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-09 10:35:26,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 136 transitions. [2020-10-09 10:35:26,468 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 136 transitions. Word has length 8 [2020-10-09 10:35:26,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:35:26,469 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 136 transitions. [2020-10-09 10:35:26,469 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-09 10:35:26,469 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 136 transitions. [2020-10-09 10:35:26,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-09 10:35:26,471 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:35:26,471 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:35:26,471 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-09 10:35:26,471 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:35:26,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:35:26,472 INFO L82 PathProgramCache]: Analyzing trace with hash -244746376, now seen corresponding path program 1 times [2020-10-09 10:35:26,472 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:35:26,472 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332188306] [2020-10-09 10:35:26,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:35:26,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:35:26,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:35:26,567 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332188306] [2020-10-09 10:35:26,568 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-09 10:35:26,568 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-09 10:35:26,568 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144507949] [2020-10-09 10:35:26,569 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-09 10:35:26,569 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:35:26,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-09 10:35:26,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-09 10:35:26,570 INFO L87 Difference]: Start difference. First operand 55 states and 136 transitions. Second operand 5 states. [2020-10-09 10:35:26,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:35:26,603 INFO L93 Difference]: Finished difference Result 73 states and 170 transitions. [2020-10-09 10:35:26,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-09 10:35:26,603 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2020-10-09 10:35:26,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:35:26,605 INFO L225 Difference]: With dead ends: 73 [2020-10-09 10:35:26,605 INFO L226 Difference]: Without dead ends: 70 [2020-10-09 10:35:26,606 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-09 10:35:26,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-10-09 10:35:26,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 64. [2020-10-09 10:35:26,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-10-09 10:35:26,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 152 transitions. [2020-10-09 10:35:26,618 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 152 transitions. Word has length 8 [2020-10-09 10:35:26,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:35:26,618 INFO L481 AbstractCegarLoop]: Abstraction has 64 states and 152 transitions. [2020-10-09 10:35:26,618 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-09 10:35:26,618 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 152 transitions. [2020-10-09 10:35:26,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-09 10:35:26,619 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:35:26,620 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:35:26,620 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-09 10:35:26,620 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:35:26,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:35:26,621 INFO L82 PathProgramCache]: Analyzing trace with hash -244724056, now seen corresponding path program 2 times [2020-10-09 10:35:26,621 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:35:26,621 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090253742] [2020-10-09 10:35:26,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:35:26,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:35:26,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:35:26,691 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090253742] [2020-10-09 10:35:26,691 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-09 10:35:26,691 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-09 10:35:26,691 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028982640] [2020-10-09 10:35:26,692 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-09 10:35:26,692 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:35:26,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-09 10:35:26,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-09 10:35:26,693 INFO L87 Difference]: Start difference. First operand 64 states and 152 transitions. Second operand 5 states. [2020-10-09 10:35:26,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:35:26,763 INFO L93 Difference]: Finished difference Result 86 states and 202 transitions. [2020-10-09 10:35:26,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-09 10:35:26,763 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2020-10-09 10:35:26,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:35:26,765 INFO L225 Difference]: With dead ends: 86 [2020-10-09 10:35:26,765 INFO L226 Difference]: Without dead ends: 80 [2020-10-09 10:35:26,766 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-09 10:35:26,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-10-09 10:35:26,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 66. [2020-10-09 10:35:26,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-10-09 10:35:26,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 157 transitions. [2020-10-09 10:35:26,775 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 157 transitions. Word has length 8 [2020-10-09 10:35:26,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:35:26,775 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 157 transitions. [2020-10-09 10:35:26,776 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-09 10:35:26,776 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 157 transitions. [2020-10-09 10:35:26,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-09 10:35:26,777 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:35:26,777 INFO L421 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:35:26,777 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-09 10:35:26,778 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:35:26,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:35:26,778 INFO L82 PathProgramCache]: Analyzing trace with hash -1294770680, now seen corresponding path program 2 times [2020-10-09 10:35:26,778 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:35:26,779 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979053490] [2020-10-09 10:35:26,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:35:26,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:35:26,892 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:35:26,892 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979053490] [2020-10-09 10:35:26,893 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [729888677] [2020-10-09 10:35:26,893 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:35:26,965 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-09 10:35:26,966 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:35:26,968 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-09 10:35:26,973 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:35:27,035 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 10:35:27,056 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:35:27,056 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:35:27,057 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2020-10-09 10:35:27,057 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944507643] [2020-10-09 10:35:27,057 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-09 10:35:27,058 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:35:27,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-09 10:35:27,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-10-09 10:35:27,058 INFO L87 Difference]: Start difference. First operand 66 states and 157 transitions. Second operand 10 states. [2020-10-09 10:35:27,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:35:27,131 INFO L93 Difference]: Finished difference Result 101 states and 235 transitions. [2020-10-09 10:35:27,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-09 10:35:27,132 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 9 [2020-10-09 10:35:27,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:35:27,133 INFO L225 Difference]: With dead ends: 101 [2020-10-09 10:35:27,134 INFO L226 Difference]: Without dead ends: 96 [2020-10-09 10:35:27,134 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-10-09 10:35:27,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-10-09 10:35:27,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 71. [2020-10-09 10:35:27,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-10-09 10:35:27,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 173 transitions. [2020-10-09 10:35:27,142 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 173 transitions. Word has length 9 [2020-10-09 10:35:27,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:35:27,143 INFO L481 AbstractCegarLoop]: Abstraction has 71 states and 173 transitions. [2020-10-09 10:35:27,143 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-09 10:35:27,143 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 173 transitions. [2020-10-09 10:35:27,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-09 10:35:27,144 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:35:27,144 INFO L421 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:35:27,358 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:35:27,359 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:35:27,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:35:27,360 INFO L82 PathProgramCache]: Analyzing trace with hash 1002797622, now seen corresponding path program 3 times [2020-10-09 10:35:27,360 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:35:27,360 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086387223] [2020-10-09 10:35:27,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:35:27,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:35:27,476 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:35:27,477 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086387223] [2020-10-09 10:35:27,477 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1254779561] [2020-10-09 10:35:27,477 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:35:27,534 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-09 10:35:27,534 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:35:27,535 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-09 10:35:27,536 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:35:27,595 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:35:27,595 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:35:27,596 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2020-10-09 10:35:27,596 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085423513] [2020-10-09 10:35:27,596 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-09 10:35:27,597 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:35:27,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-09 10:35:27,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-09 10:35:27,597 INFO L87 Difference]: Start difference. First operand 71 states and 173 transitions. Second operand 9 states. [2020-10-09 10:35:27,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:35:27,630 INFO L93 Difference]: Finished difference Result 84 states and 199 transitions. [2020-10-09 10:35:27,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-09 10:35:27,631 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 9 [2020-10-09 10:35:27,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:35:27,632 INFO L225 Difference]: With dead ends: 84 [2020-10-09 10:35:27,633 INFO L226 Difference]: Without dead ends: 81 [2020-10-09 10:35:27,633 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-09 10:35:27,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-10-09 10:35:27,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 74. [2020-10-09 10:35:27,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-10-09 10:35:27,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 179 transitions. [2020-10-09 10:35:27,641 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 179 transitions. Word has length 9 [2020-10-09 10:35:27,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:35:27,641 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 179 transitions. [2020-10-09 10:35:27,641 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-09 10:35:27,641 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 179 transitions. [2020-10-09 10:35:27,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-09 10:35:27,642 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:35:27,642 INFO L421 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:35:27,856 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:35:27,857 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:35:27,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:35:27,858 INFO L82 PathProgramCache]: Analyzing trace with hash 1003489542, now seen corresponding path program 4 times [2020-10-09 10:35:27,858 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:35:27,859 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373613586] [2020-10-09 10:35:27,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:35:27,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:35:27,918 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:35:27,918 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373613586] [2020-10-09 10:35:27,918 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [873707477] [2020-10-09 10:35:27,919 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:35:27,970 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-09 10:35:27,970 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:35:27,971 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-09 10:35:27,972 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:35:28,037 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:35:28,038 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:35:28,038 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2020-10-09 10:35:28,038 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894603318] [2020-10-09 10:35:28,039 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-09 10:35:28,039 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:35:28,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-09 10:35:28,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-10-09 10:35:28,039 INFO L87 Difference]: Start difference. First operand 74 states and 179 transitions. Second operand 9 states. [2020-10-09 10:35:28,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:35:28,086 INFO L93 Difference]: Finished difference Result 90 states and 213 transitions. [2020-10-09 10:35:28,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-09 10:35:28,087 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 9 [2020-10-09 10:35:28,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:35:28,088 INFO L225 Difference]: With dead ends: 90 [2020-10-09 10:35:28,088 INFO L226 Difference]: Without dead ends: 87 [2020-10-09 10:35:28,088 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-10-09 10:35:28,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-10-09 10:35:28,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 76. [2020-10-09 10:35:28,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-10-09 10:35:28,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 186 transitions. [2020-10-09 10:35:28,095 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 186 transitions. Word has length 9 [2020-10-09 10:35:28,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:35:28,095 INFO L481 AbstractCegarLoop]: Abstraction has 76 states and 186 transitions. [2020-10-09 10:35:28,096 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-09 10:35:28,096 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 186 transitions. [2020-10-09 10:35:28,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-09 10:35:28,097 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:35:28,097 INFO L421 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:35:28,310 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:35:28,311 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:35:28,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:35:28,312 INFO L82 PathProgramCache]: Analyzing trace with hash 1003511862, now seen corresponding path program 5 times [2020-10-09 10:35:28,312 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:35:28,312 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520660521] [2020-10-09 10:35:28,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:35:28,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:35:28,377 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:35:28,379 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520660521] [2020-10-09 10:35:28,379 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1143396142] [2020-10-09 10:35:28,379 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:35:28,432 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-09 10:35:28,432 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:35:28,433 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-09 10:35:28,435 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:35:28,489 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-09 10:35:28,508 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:35:28,508 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:35:28,508 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2020-10-09 10:35:28,508 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208697682] [2020-10-09 10:35:28,509 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-09 10:35:28,509 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:35:28,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-09 10:35:28,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-09 10:35:28,510 INFO L87 Difference]: Start difference. First operand 76 states and 186 transitions. Second operand 9 states. [2020-10-09 10:35:28,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:35:28,616 INFO L93 Difference]: Finished difference Result 99 states and 237 transitions. [2020-10-09 10:35:28,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-09 10:35:28,617 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 9 [2020-10-09 10:35:28,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:35:28,618 INFO L225 Difference]: With dead ends: 99 [2020-10-09 10:35:28,618 INFO L226 Difference]: Without dead ends: 93 [2020-10-09 10:35:28,618 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2020-10-09 10:35:28,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-10-09 10:35:28,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 77. [2020-10-09 10:35:28,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-10-09 10:35:28,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 190 transitions. [2020-10-09 10:35:28,632 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 190 transitions. Word has length 9 [2020-10-09 10:35:28,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:35:28,632 INFO L481 AbstractCegarLoop]: Abstraction has 77 states and 190 transitions. [2020-10-09 10:35:28,632 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-09 10:35:28,633 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 190 transitions. [2020-10-09 10:35:28,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-09 10:35:28,634 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:35:28,634 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:35:28,834 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:35:28,835 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:35:28,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:35:28,836 INFO L82 PathProgramCache]: Analyzing trace with hash -1491235988, now seen corresponding path program 1 times [2020-10-09 10:35:28,836 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:35:28,836 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853019410] [2020-10-09 10:35:28,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:35:28,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:35:28,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:35:28,895 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853019410] [2020-10-09 10:35:28,895 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-09 10:35:28,896 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-09 10:35:28,896 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942338037] [2020-10-09 10:35:28,896 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-09 10:35:28,896 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:35:28,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-09 10:35:28,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-09 10:35:28,897 INFO L87 Difference]: Start difference. First operand 77 states and 190 transitions. Second operand 6 states. [2020-10-09 10:35:28,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:35:28,940 INFO L93 Difference]: Finished difference Result 92 states and 220 transitions. [2020-10-09 10:35:28,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-09 10:35:28,942 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-10-09 10:35:28,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:35:28,943 INFO L225 Difference]: With dead ends: 92 [2020-10-09 10:35:28,943 INFO L226 Difference]: Without dead ends: 90 [2020-10-09 10:35:28,944 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-09 10:35:28,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-10-09 10:35:28,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 79. [2020-10-09 10:35:28,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-10-09 10:35:28,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 194 transitions. [2020-10-09 10:35:28,950 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 194 transitions. Word has length 10 [2020-10-09 10:35:28,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:35:28,950 INFO L481 AbstractCegarLoop]: Abstraction has 79 states and 194 transitions. [2020-10-09 10:35:28,950 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-09 10:35:28,950 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 194 transitions. [2020-10-09 10:35:28,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-09 10:35:28,951 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:35:28,952 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:35:28,952 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-09 10:35:28,952 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:35:28,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:35:28,952 INFO L82 PathProgramCache]: Analyzing trace with hash -1490572898, now seen corresponding path program 2 times [2020-10-09 10:35:28,953 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:35:28,953 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473948696] [2020-10-09 10:35:28,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:35:28,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:35:29,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:35:29,040 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473948696] [2020-10-09 10:35:29,040 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-09 10:35:29,040 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-09 10:35:29,040 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133734493] [2020-10-09 10:35:29,040 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-09 10:35:29,041 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:35:29,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-09 10:35:29,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-09 10:35:29,041 INFO L87 Difference]: Start difference. First operand 79 states and 194 transitions. Second operand 6 states. [2020-10-09 10:35:29,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:35:29,080 INFO L93 Difference]: Finished difference Result 100 states and 234 transitions. [2020-10-09 10:35:29,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-09 10:35:29,081 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-10-09 10:35:29,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:35:29,083 INFO L225 Difference]: With dead ends: 100 [2020-10-09 10:35:29,083 INFO L226 Difference]: Without dead ends: 98 [2020-10-09 10:35:29,083 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-09 10:35:29,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-10-09 10:35:29,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 83. [2020-10-09 10:35:29,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-10-09 10:35:29,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 200 transitions. [2020-10-09 10:35:29,092 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 200 transitions. Word has length 10 [2020-10-09 10:35:29,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:35:29,092 INFO L481 AbstractCegarLoop]: Abstraction has 83 states and 200 transitions. [2020-10-09 10:35:29,092 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-09 10:35:29,093 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 200 transitions. [2020-10-09 10:35:29,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-09 10:35:29,093 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:35:29,093 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:35:29,094 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-09 10:35:29,094 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:35:29,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:35:29,099 INFO L82 PathProgramCache]: Analyzing trace with hash -1490550578, now seen corresponding path program 3 times [2020-10-09 10:35:29,099 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:35:29,099 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804081410] [2020-10-09 10:35:29,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:35:29,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:35:29,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:35:29,186 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804081410] [2020-10-09 10:35:29,186 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-09 10:35:29,186 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-09 10:35:29,186 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841645484] [2020-10-09 10:35:29,187 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-09 10:35:29,187 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:35:29,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-09 10:35:29,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-09 10:35:29,188 INFO L87 Difference]: Start difference. First operand 83 states and 200 transitions. Second operand 6 states. [2020-10-09 10:35:29,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:35:29,254 INFO L93 Difference]: Finished difference Result 105 states and 246 transitions. [2020-10-09 10:35:29,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-09 10:35:29,254 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-10-09 10:35:29,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:35:29,255 INFO L225 Difference]: With dead ends: 105 [2020-10-09 10:35:29,256 INFO L226 Difference]: Without dead ends: 100 [2020-10-09 10:35:29,256 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-09 10:35:29,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-10-09 10:35:29,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 82. [2020-10-09 10:35:29,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-10-09 10:35:29,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 198 transitions. [2020-10-09 10:35:29,263 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 198 transitions. Word has length 10 [2020-10-09 10:35:29,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:35:29,264 INFO L481 AbstractCegarLoop]: Abstraction has 82 states and 198 transitions. [2020-10-09 10:35:29,264 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-09 10:35:29,264 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 198 transitions. [2020-10-09 10:35:29,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-09 10:35:29,267 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:35:29,267 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:35:29,267 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-09 10:35:29,267 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:35:29,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:35:29,267 INFO L82 PathProgramCache]: Analyzing trace with hash -1490521748, now seen corresponding path program 4 times [2020-10-09 10:35:29,268 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:35:29,268 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200349369] [2020-10-09 10:35:29,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:35:29,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:35:29,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:35:29,352 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200349369] [2020-10-09 10:35:29,352 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-09 10:35:29,352 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-09 10:35:29,353 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657800892] [2020-10-09 10:35:29,353 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-09 10:35:29,353 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:35:29,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-09 10:35:29,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-09 10:35:29,354 INFO L87 Difference]: Start difference. First operand 82 states and 198 transitions. Second operand 6 states. [2020-10-09 10:35:29,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:35:29,431 INFO L93 Difference]: Finished difference Result 105 states and 246 transitions. [2020-10-09 10:35:29,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-09 10:35:29,432 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-10-09 10:35:29,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:35:29,434 INFO L225 Difference]: With dead ends: 105 [2020-10-09 10:35:29,434 INFO L226 Difference]: Without dead ends: 100 [2020-10-09 10:35:29,434 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-09 10:35:29,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-10-09 10:35:29,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 82. [2020-10-09 10:35:29,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-10-09 10:35:29,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 194 transitions. [2020-10-09 10:35:29,439 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 194 transitions. Word has length 10 [2020-10-09 10:35:29,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:35:29,439 INFO L481 AbstractCegarLoop]: Abstraction has 82 states and 194 transitions. [2020-10-09 10:35:29,439 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-09 10:35:29,439 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 194 transitions. [2020-10-09 10:35:29,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-09 10:35:29,440 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:35:29,440 INFO L421 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:35:29,440 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-09 10:35:29,441 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:35:29,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:35:29,441 INFO L82 PathProgramCache]: Analyzing trace with hash -1483163371, now seen corresponding path program 3 times [2020-10-09 10:35:29,441 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:35:29,442 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122793166] [2020-10-09 10:35:29,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:35:29,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:35:29,506 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:35:29,506 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122793166] [2020-10-09 10:35:29,507 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1381721164] [2020-10-09 10:35:29,507 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:35:29,547 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-09 10:35:29,548 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:35:29,548 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-09 10:35:29,550 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:35:29,613 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 10:35:29,633 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:35:29,633 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:35:29,633 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-10-09 10:35:29,634 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977854032] [2020-10-09 10:35:29,636 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-09 10:35:29,636 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:35:29,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-09 10:35:29,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2020-10-09 10:35:29,637 INFO L87 Difference]: Start difference. First operand 82 states and 194 transitions. Second operand 12 states. [2020-10-09 10:35:29,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:35:29,744 INFO L93 Difference]: Finished difference Result 122 states and 284 transitions. [2020-10-09 10:35:29,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-09 10:35:29,745 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 10 [2020-10-09 10:35:29,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:35:29,746 INFO L225 Difference]: With dead ends: 122 [2020-10-09 10:35:29,746 INFO L226 Difference]: Without dead ends: 117 [2020-10-09 10:35:29,747 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=160, Unknown=0, NotChecked=0, Total=240 [2020-10-09 10:35:29,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2020-10-09 10:35:29,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 88. [2020-10-09 10:35:29,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-10-09 10:35:29,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 215 transitions. [2020-10-09 10:35:29,751 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 215 transitions. Word has length 10 [2020-10-09 10:35:29,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:35:29,752 INFO L481 AbstractCegarLoop]: Abstraction has 88 states and 215 transitions. [2020-10-09 10:35:29,752 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-09 10:35:29,752 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 215 transitions. [2020-10-09 10:35:29,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-09 10:35:29,753 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:35:29,753 INFO L421 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:35:29,964 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2020-10-09 10:35:29,965 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:35:29,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:35:29,966 INFO L82 PathProgramCache]: Analyzing trace with hash 1021955896, now seen corresponding path program 6 times [2020-10-09 10:35:29,966 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:35:29,966 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629890677] [2020-10-09 10:35:29,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:35:29,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:35:30,052 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:35:30,053 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629890677] [2020-10-09 10:35:30,053 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1592343060] [2020-10-09 10:35:30,053 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:35:30,095 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-10-09 10:35:30,095 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:35:30,096 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-09 10:35:30,100 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:35:30,219 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:35:30,219 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:35:30,219 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-09 10:35:30,220 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83103321] [2020-10-09 10:35:30,220 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-09 10:35:30,220 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:35:30,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-09 10:35:30,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-09 10:35:30,223 INFO L87 Difference]: Start difference. First operand 88 states and 215 transitions. Second operand 11 states. [2020-10-09 10:35:30,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:35:30,269 INFO L93 Difference]: Finished difference Result 108 states and 255 transitions. [2020-10-09 10:35:30,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-09 10:35:30,270 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 10 [2020-10-09 10:35:30,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:35:30,271 INFO L225 Difference]: With dead ends: 108 [2020-10-09 10:35:30,271 INFO L226 Difference]: Without dead ends: 105 [2020-10-09 10:35:30,271 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-09 10:35:30,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2020-10-09 10:35:30,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 91. [2020-10-09 10:35:30,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-10-09 10:35:30,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 221 transitions. [2020-10-09 10:35:30,278 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 221 transitions. Word has length 10 [2020-10-09 10:35:30,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:35:30,278 INFO L481 AbstractCegarLoop]: Abstraction has 91 states and 221 transitions. [2020-10-09 10:35:30,278 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-09 10:35:30,278 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 221 transitions. [2020-10-09 10:35:30,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-09 10:35:30,279 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:35:30,279 INFO L421 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:35:30,489 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:35:30,489 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:35:30,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:35:30,490 INFO L82 PathProgramCache]: Analyzing trace with hash 1043405416, now seen corresponding path program 7 times [2020-10-09 10:35:30,490 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:35:30,491 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930538435] [2020-10-09 10:35:30,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:35:30,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:35:30,581 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:35:30,581 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930538435] [2020-10-09 10:35:30,582 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2032144789] [2020-10-09 10:35:30,582 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:35:30,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:35:30,634 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-09 10:35:30,635 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:35:30,712 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:35:30,712 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:35:30,713 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-09 10:35:30,713 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214639897] [2020-10-09 10:35:30,713 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-09 10:35:30,714 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:35:30,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-09 10:35:30,714 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-10-09 10:35:30,714 INFO L87 Difference]: Start difference. First operand 91 states and 221 transitions. Second operand 11 states. [2020-10-09 10:35:30,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:35:30,768 INFO L93 Difference]: Finished difference Result 116 states and 270 transitions. [2020-10-09 10:35:30,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-09 10:35:30,769 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 10 [2020-10-09 10:35:30,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:35:30,773 INFO L225 Difference]: With dead ends: 116 [2020-10-09 10:35:30,773 INFO L226 Difference]: Without dead ends: 113 [2020-10-09 10:35:30,773 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2020-10-09 10:35:30,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-10-09 10:35:30,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 92. [2020-10-09 10:35:30,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-10-09 10:35:30,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 223 transitions. [2020-10-09 10:35:30,780 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 223 transitions. Word has length 10 [2020-10-09 10:35:30,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:35:30,781 INFO L481 AbstractCegarLoop]: Abstraction has 92 states and 223 transitions. [2020-10-09 10:35:30,781 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-09 10:35:30,781 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 223 transitions. [2020-10-09 10:35:30,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-09 10:35:30,782 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:35:30,782 INFO L421 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:35:30,994 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2020-10-09 10:35:30,995 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:35:30,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:35:30,996 INFO L82 PathProgramCache]: Analyzing trace with hash 1044097336, now seen corresponding path program 8 times [2020-10-09 10:35:30,996 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:35:30,997 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094027972] [2020-10-09 10:35:30,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:35:31,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:35:31,062 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:35:31,063 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094027972] [2020-10-09 10:35:31,063 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [488456151] [2020-10-09 10:35:31,063 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:35:31,130 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-09 10:35:31,130 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:35:31,131 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-09 10:35:31,132 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:35:31,223 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:35:31,223 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:35:31,224 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-09 10:35:31,224 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513084977] [2020-10-09 10:35:31,224 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-09 10:35:31,224 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:35:31,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-09 10:35:31,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-10-09 10:35:31,225 INFO L87 Difference]: Start difference. First operand 92 states and 223 transitions. Second operand 11 states. [2020-10-09 10:35:31,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:35:31,309 INFO L93 Difference]: Finished difference Result 115 states and 270 transitions. [2020-10-09 10:35:31,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-09 10:35:31,309 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 10 [2020-10-09 10:35:31,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:35:31,310 INFO L225 Difference]: With dead ends: 115 [2020-10-09 10:35:31,311 INFO L226 Difference]: Without dead ends: 112 [2020-10-09 10:35:31,311 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2020-10-09 10:35:31,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-10-09 10:35:31,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 94. [2020-10-09 10:35:31,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-10-09 10:35:31,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 230 transitions. [2020-10-09 10:35:31,316 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 230 transitions. Word has length 10 [2020-10-09 10:35:31,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:35:31,316 INFO L481 AbstractCegarLoop]: Abstraction has 94 states and 230 transitions. [2020-10-09 10:35:31,316 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-09 10:35:31,316 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 230 transitions. [2020-10-09 10:35:31,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-09 10:35:31,317 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:35:31,317 INFO L421 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:35:31,528 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2020-10-09 10:35:31,529 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:35:31,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:35:31,529 INFO L82 PathProgramCache]: Analyzing trace with hash 1044119656, now seen corresponding path program 9 times [2020-10-09 10:35:31,530 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:35:31,530 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181281861] [2020-10-09 10:35:31,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:35:31,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:35:31,596 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:35:31,596 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181281861] [2020-10-09 10:35:31,596 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1278277905] [2020-10-09 10:35:31,597 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:35:31,649 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-09 10:35:31,649 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:35:31,650 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-09 10:35:31,651 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:35:31,712 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-09 10:35:31,722 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:35:31,722 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:35:31,723 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-09 10:35:31,723 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228473358] [2020-10-09 10:35:31,724 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-09 10:35:31,724 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:35:31,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-09 10:35:31,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-09 10:35:31,725 INFO L87 Difference]: Start difference. First operand 94 states and 230 transitions. Second operand 11 states. [2020-10-09 10:35:31,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:35:31,847 INFO L93 Difference]: Finished difference Result 124 states and 294 transitions. [2020-10-09 10:35:31,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-09 10:35:31,848 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 10 [2020-10-09 10:35:31,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:35:31,849 INFO L225 Difference]: With dead ends: 124 [2020-10-09 10:35:31,849 INFO L226 Difference]: Without dead ends: 118 [2020-10-09 10:35:31,849 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2020-10-09 10:35:31,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2020-10-09 10:35:31,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 94. [2020-10-09 10:35:31,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-10-09 10:35:31,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 232 transitions. [2020-10-09 10:35:31,853 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 232 transitions. Word has length 10 [2020-10-09 10:35:31,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:35:31,854 INFO L481 AbstractCegarLoop]: Abstraction has 94 states and 232 transitions. [2020-10-09 10:35:31,854 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-09 10:35:31,854 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 232 transitions. [2020-10-09 10:35:31,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-09 10:35:31,855 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:35:31,855 INFO L421 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:35:32,066 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2020-10-09 10:35:32,067 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:35:32,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:35:32,067 INFO L82 PathProgramCache]: Analyzing trace with hash 1016324353, now seen corresponding path program 5 times [2020-10-09 10:35:32,068 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:35:32,068 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519243655] [2020-10-09 10:35:32,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:35:32,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:35:32,129 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:35:32,129 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519243655] [2020-10-09 10:35:32,129 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1716204351] [2020-10-09 10:35:32,129 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:35:32,169 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-09 10:35:32,169 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:35:32,170 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-09 10:35:32,172 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:35:32,267 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:35:32,267 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:35:32,267 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-09 10:35:32,267 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836554755] [2020-10-09 10:35:32,268 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-09 10:35:32,268 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:35:32,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-09 10:35:32,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-09 10:35:32,269 INFO L87 Difference]: Start difference. First operand 94 states and 232 transitions. Second operand 11 states. [2020-10-09 10:35:32,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:35:32,309 INFO L93 Difference]: Finished difference Result 113 states and 270 transitions. [2020-10-09 10:35:32,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-09 10:35:32,310 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 11 [2020-10-09 10:35:32,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:35:32,311 INFO L225 Difference]: With dead ends: 113 [2020-10-09 10:35:32,311 INFO L226 Difference]: Without dead ends: 111 [2020-10-09 10:35:32,312 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-09 10:35:32,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-10-09 10:35:32,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 96. [2020-10-09 10:35:32,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-10-09 10:35:32,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 238 transitions. [2020-10-09 10:35:32,317 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 238 transitions. Word has length 11 [2020-10-09 10:35:32,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:35:32,318 INFO L481 AbstractCegarLoop]: Abstraction has 96 states and 238 transitions. [2020-10-09 10:35:32,318 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-09 10:35:32,318 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 238 transitions. [2020-10-09 10:35:32,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-09 10:35:32,319 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:35:32,319 INFO L421 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:35:32,531 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-10-09 10:35:32,531 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:35:32,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:35:32,532 INFO L82 PathProgramCache]: Analyzing trace with hash 1016325314, now seen corresponding path program 6 times [2020-10-09 10:35:32,532 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:35:32,532 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767965839] [2020-10-09 10:35:32,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:35:32,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:35:32,590 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:35:32,591 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767965839] [2020-10-09 10:35:32,591 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1852810030] [2020-10-09 10:35:32,591 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:35:32,646 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-10-09 10:35:32,646 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:35:32,647 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-09 10:35:32,648 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:35:32,709 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:35:32,709 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:35:32,710 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-09 10:35:32,710 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694021357] [2020-10-09 10:35:32,710 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-09 10:35:32,711 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:35:32,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-09 10:35:32,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-09 10:35:32,711 INFO L87 Difference]: Start difference. First operand 96 states and 238 transitions. Second operand 11 states. [2020-10-09 10:35:32,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:35:32,775 INFO L93 Difference]: Finished difference Result 118 states and 280 transitions. [2020-10-09 10:35:32,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-09 10:35:32,776 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 11 [2020-10-09 10:35:32,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:35:32,777 INFO L225 Difference]: With dead ends: 118 [2020-10-09 10:35:32,777 INFO L226 Difference]: Without dead ends: 116 [2020-10-09 10:35:32,778 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2020-10-09 10:35:32,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-10-09 10:35:32,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 97. [2020-10-09 10:35:32,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-10-09 10:35:32,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 239 transitions. [2020-10-09 10:35:32,783 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 239 transitions. Word has length 11 [2020-10-09 10:35:32,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:35:32,783 INFO L481 AbstractCegarLoop]: Abstraction has 97 states and 239 transitions. [2020-10-09 10:35:32,783 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-09 10:35:32,783 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 239 transitions. [2020-10-09 10:35:32,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-09 10:35:32,784 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:35:32,784 INFO L421 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:35:32,995 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,12 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:35:32,996 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:35:32,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:35:32,997 INFO L82 PathProgramCache]: Analyzing trace with hash 1016354144, now seen corresponding path program 7 times [2020-10-09 10:35:32,997 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:35:32,997 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838932477] [2020-10-09 10:35:32,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:35:33,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:35:33,064 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:35:33,064 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838932477] [2020-10-09 10:35:33,064 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [536767436] [2020-10-09 10:35:33,064 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:35:33,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:35:33,102 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-09 10:35:33,104 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:35:33,198 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:35:33,199 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:35:33,199 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-09 10:35:33,199 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853808795] [2020-10-09 10:35:33,199 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-09 10:35:33,200 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:35:33,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-09 10:35:33,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-09 10:35:33,200 INFO L87 Difference]: Start difference. First operand 97 states and 239 transitions. Second operand 11 states. [2020-10-09 10:35:33,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:35:33,278 INFO L93 Difference]: Finished difference Result 119 states and 282 transitions. [2020-10-09 10:35:33,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-09 10:35:33,279 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 11 [2020-10-09 10:35:33,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:35:33,280 INFO L225 Difference]: With dead ends: 119 [2020-10-09 10:35:33,280 INFO L226 Difference]: Without dead ends: 117 [2020-10-09 10:35:33,280 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2020-10-09 10:35:33,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2020-10-09 10:35:33,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 98. [2020-10-09 10:35:33,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-10-09 10:35:33,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 241 transitions. [2020-10-09 10:35:33,285 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 241 transitions. Word has length 11 [2020-10-09 10:35:33,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:35:33,285 INFO L481 AbstractCegarLoop]: Abstraction has 98 states and 241 transitions. [2020-10-09 10:35:33,285 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-09 10:35:33,285 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 241 transitions. [2020-10-09 10:35:33,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-09 10:35:33,286 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:35:33,286 INFO L421 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:35:33,486 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,13 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:35:33,487 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:35:33,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:35:33,487 INFO L82 PathProgramCache]: Analyzing trace with hash 1036880143, now seen corresponding path program 8 times [2020-10-09 10:35:33,488 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:35:33,488 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218044750] [2020-10-09 10:35:33,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:35:33,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:35:33,577 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:35:33,577 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218044750] [2020-10-09 10:35:33,577 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1529130254] [2020-10-09 10:35:33,577 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:35:33,618 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-09 10:35:33,619 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:35:33,619 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-09 10:35:33,620 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:35:33,693 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:35:33,693 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:35:33,694 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-09 10:35:33,694 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438384421] [2020-10-09 10:35:33,694 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-09 10:35:33,694 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:35:33,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-09 10:35:33,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-10-09 10:35:33,695 INFO L87 Difference]: Start difference. First operand 98 states and 241 transitions. Second operand 11 states. [2020-10-09 10:35:33,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:35:33,748 INFO L93 Difference]: Finished difference Result 122 states and 288 transitions. [2020-10-09 10:35:33,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-09 10:35:33,749 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 11 [2020-10-09 10:35:33,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:35:33,750 INFO L225 Difference]: With dead ends: 122 [2020-10-09 10:35:33,750 INFO L226 Difference]: Without dead ends: 120 [2020-10-09 10:35:33,751 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2020-10-09 10:35:33,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2020-10-09 10:35:33,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 100. [2020-10-09 10:35:33,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-10-09 10:35:33,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 247 transitions. [2020-10-09 10:35:33,754 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 247 transitions. Word has length 11 [2020-10-09 10:35:33,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:35:33,755 INFO L481 AbstractCegarLoop]: Abstraction has 100 states and 247 transitions. [2020-10-09 10:35:33,755 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-09 10:35:33,755 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 247 transitions. [2020-10-09 10:35:33,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-09 10:35:33,755 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:35:33,756 INFO L421 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:35:33,964 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2020-10-09 10:35:33,965 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:35:33,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:35:33,965 INFO L82 PathProgramCache]: Analyzing trace with hash 1036881104, now seen corresponding path program 9 times [2020-10-09 10:35:33,966 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:35:33,966 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330066402] [2020-10-09 10:35:33,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:35:33,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:35:34,025 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:35:34,025 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330066402] [2020-10-09 10:35:34,025 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [734021562] [2020-10-09 10:35:34,026 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:35:34,075 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-09 10:35:34,076 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:35:34,076 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-09 10:35:34,077 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:35:34,166 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:35:34,166 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:35:34,166 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-09 10:35:34,167 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091790269] [2020-10-09 10:35:34,167 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-09 10:35:34,167 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:35:34,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-09 10:35:34,168 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-09 10:35:34,168 INFO L87 Difference]: Start difference. First operand 100 states and 247 transitions. Second operand 11 states. [2020-10-09 10:35:34,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:35:34,268 INFO L93 Difference]: Finished difference Result 123 states and 290 transitions. [2020-10-09 10:35:34,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-09 10:35:34,269 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 11 [2020-10-09 10:35:34,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:35:34,270 INFO L225 Difference]: With dead ends: 123 [2020-10-09 10:35:34,270 INFO L226 Difference]: Without dead ends: 121 [2020-10-09 10:35:34,270 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2020-10-09 10:35:34,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2020-10-09 10:35:34,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 99. [2020-10-09 10:35:34,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-10-09 10:35:34,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 243 transitions. [2020-10-09 10:35:34,275 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 243 transitions. Word has length 11 [2020-10-09 10:35:34,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:35:34,275 INFO L481 AbstractCegarLoop]: Abstraction has 99 states and 243 transitions. [2020-10-09 10:35:34,275 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-09 10:35:34,275 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 243 transitions. [2020-10-09 10:35:34,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-09 10:35:34,276 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:35:34,276 INFO L421 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:35:34,487 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:35:34,488 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:35:34,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:35:34,488 INFO L82 PathProgramCache]: Analyzing trace with hash 1037543233, now seen corresponding path program 10 times [2020-10-09 10:35:34,488 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:35:34,489 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073535588] [2020-10-09 10:35:34,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:35:34,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:35:34,548 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:35:34,548 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073535588] [2020-10-09 10:35:34,549 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [694768527] [2020-10-09 10:35:34,549 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:35:34,589 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-09 10:35:34,589 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:35:34,590 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-09 10:35:34,591 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:35:34,673 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:35:34,673 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:35:34,673 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-09 10:35:34,673 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489975339] [2020-10-09 10:35:34,674 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-09 10:35:34,674 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:35:34,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-09 10:35:34,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-10-09 10:35:34,674 INFO L87 Difference]: Start difference. First operand 99 states and 243 transitions. Second operand 11 states. [2020-10-09 10:35:34,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:35:34,750 INFO L93 Difference]: Finished difference Result 123 states and 287 transitions. [2020-10-09 10:35:34,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-09 10:35:34,750 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 11 [2020-10-09 10:35:34,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:35:34,751 INFO L225 Difference]: With dead ends: 123 [2020-10-09 10:35:34,751 INFO L226 Difference]: Without dead ends: 121 [2020-10-09 10:35:34,752 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2020-10-09 10:35:34,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2020-10-09 10:35:34,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 103. [2020-10-09 10:35:34,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-10-09 10:35:34,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 249 transitions. [2020-10-09 10:35:34,756 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 249 transitions. Word has length 11 [2020-10-09 10:35:34,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:35:34,756 INFO L481 AbstractCegarLoop]: Abstraction has 103 states and 249 transitions. [2020-10-09 10:35:34,756 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-09 10:35:34,756 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 249 transitions. [2020-10-09 10:35:34,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-09 10:35:34,759 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:35:34,759 INFO L421 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:35:34,968 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2020-10-09 10:35:34,969 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:35:34,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:35:34,969 INFO L82 PathProgramCache]: Analyzing trace with hash 1037565553, now seen corresponding path program 11 times [2020-10-09 10:35:34,969 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:35:34,970 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218718877] [2020-10-09 10:35:34,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:35:34,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:35:35,019 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:35:35,020 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218718877] [2020-10-09 10:35:35,020 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [171995247] [2020-10-09 10:35:35,020 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:35:35,067 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-09 10:35:35,067 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:35:35,068 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-09 10:35:35,069 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:35:35,142 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-09 10:35:35,184 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:35:35,184 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:35:35,184 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-09 10:35:35,185 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799065445] [2020-10-09 10:35:35,185 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-09 10:35:35,185 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:35:35,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-09 10:35:35,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-09 10:35:35,186 INFO L87 Difference]: Start difference. First operand 103 states and 249 transitions. Second operand 11 states. [2020-10-09 10:35:35,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:35:35,377 INFO L93 Difference]: Finished difference Result 133 states and 314 transitions. [2020-10-09 10:35:35,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-09 10:35:35,378 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 11 [2020-10-09 10:35:35,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:35:35,379 INFO L225 Difference]: With dead ends: 133 [2020-10-09 10:35:35,379 INFO L226 Difference]: Without dead ends: 128 [2020-10-09 10:35:35,379 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=96, Invalid=176, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:35:35,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2020-10-09 10:35:35,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 102. [2020-10-09 10:35:35,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2020-10-09 10:35:35,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 247 transitions. [2020-10-09 10:35:35,385 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 247 transitions. Word has length 11 [2020-10-09 10:35:35,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:35:35,386 INFO L481 AbstractCegarLoop]: Abstraction has 102 states and 247 transitions. [2020-10-09 10:35:35,386 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-09 10:35:35,386 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 247 transitions. [2020-10-09 10:35:35,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-09 10:35:35,387 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:35:35,387 INFO L421 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:35:35,599 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:35:35,600 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:35:35,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:35:35,600 INFO L82 PathProgramCache]: Analyzing trace with hash 1037573024, now seen corresponding path program 12 times [2020-10-09 10:35:35,601 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:35:35,601 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664302060] [2020-10-09 10:35:35,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:35:35,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:35:35,653 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:35:35,654 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664302060] [2020-10-09 10:35:35,654 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1546244630] [2020-10-09 10:35:35,654 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:35:35,707 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-10-09 10:35:35,707 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:35:35,708 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-09 10:35:35,709 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:35:35,797 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:35:35,798 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:35:35,798 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-09 10:35:35,798 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697659311] [2020-10-09 10:35:35,798 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-09 10:35:35,799 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:35:35,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-09 10:35:35,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-09 10:35:35,799 INFO L87 Difference]: Start difference. First operand 102 states and 247 transitions. Second operand 11 states. [2020-10-09 10:35:35,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:35:35,928 INFO L93 Difference]: Finished difference Result 127 states and 298 transitions. [2020-10-09 10:35:35,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-09 10:35:35,928 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 11 [2020-10-09 10:35:35,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:35:35,930 INFO L225 Difference]: With dead ends: 127 [2020-10-09 10:35:35,930 INFO L226 Difference]: Without dead ends: 125 [2020-10-09 10:35:35,930 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2020-10-09 10:35:35,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2020-10-09 10:35:35,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 104. [2020-10-09 10:35:35,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-10-09 10:35:35,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 254 transitions. [2020-10-09 10:35:35,934 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 254 transitions. Word has length 11 [2020-10-09 10:35:35,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:35:35,934 INFO L481 AbstractCegarLoop]: Abstraction has 104 states and 254 transitions. [2020-10-09 10:35:35,934 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-09 10:35:35,934 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 254 transitions. [2020-10-09 10:35:35,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-09 10:35:35,935 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:35:35,935 INFO L421 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:35:36,136 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2020-10-09 10:35:36,137 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:35:36,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:35:36,137 INFO L82 PathProgramCache]: Analyzing trace with hash 1037594383, now seen corresponding path program 13 times [2020-10-09 10:35:36,137 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:35:36,138 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039425666] [2020-10-09 10:35:36,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:35:36,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:35:36,185 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:35:36,186 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039425666] [2020-10-09 10:35:36,186 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [726959762] [2020-10-09 10:35:36,186 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:35:36,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:35:36,217 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-09 10:35:36,217 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:35:36,260 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 10:35:36,267 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:35:36,267 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:35:36,267 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-09 10:35:36,267 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808786169] [2020-10-09 10:35:36,268 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-09 10:35:36,268 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:35:36,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-09 10:35:36,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-09 10:35:36,268 INFO L87 Difference]: Start difference. First operand 104 states and 254 transitions. Second operand 11 states. [2020-10-09 10:35:36,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:35:36,469 INFO L93 Difference]: Finished difference Result 141 states and 334 transitions. [2020-10-09 10:35:36,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-09 10:35:36,470 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 11 [2020-10-09 10:35:36,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:35:36,471 INFO L225 Difference]: With dead ends: 141 [2020-10-09 10:35:36,471 INFO L226 Difference]: Without dead ends: 136 [2020-10-09 10:35:36,472 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=131, Invalid=249, Unknown=0, NotChecked=0, Total=380 [2020-10-09 10:35:36,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-10-09 10:35:36,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 104. [2020-10-09 10:35:36,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-10-09 10:35:36,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 254 transitions. [2020-10-09 10:35:36,476 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 254 transitions. Word has length 11 [2020-10-09 10:35:36,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:35:36,476 INFO L481 AbstractCegarLoop]: Abstraction has 104 states and 254 transitions. [2020-10-09 10:35:36,476 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-09 10:35:36,477 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 254 transitions. [2020-10-09 10:35:36,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-09 10:35:36,478 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:35:36,478 INFO L421 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:35:36,688 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2020-10-09 10:35:36,689 INFO L429 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:35:36,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:35:36,689 INFO L82 PathProgramCache]: Analyzing trace with hash 1037595344, now seen corresponding path program 14 times [2020-10-09 10:35:36,690 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:35:36,690 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263137633] [2020-10-09 10:35:36,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:35:36,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:35:36,736 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:35:36,737 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263137633] [2020-10-09 10:35:36,737 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [777950370] [2020-10-09 10:35:36,737 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:35:36,776 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-09 10:35:36,776 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:35:36,777 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-09 10:35:36,777 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:35:36,833 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-09 10:35:36,841 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:35:36,841 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:35:36,842 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-09 10:35:36,842 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450927506] [2020-10-09 10:35:36,842 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-09 10:35:36,842 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:35:36,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-09 10:35:36,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-09 10:35:36,843 INFO L87 Difference]: Start difference. First operand 104 states and 254 transitions. Second operand 11 states. [2020-10-09 10:35:37,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:35:37,001 INFO L93 Difference]: Finished difference Result 136 states and 319 transitions. [2020-10-09 10:35:37,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-09 10:35:37,002 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 11 [2020-10-09 10:35:37,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:35:37,003 INFO L225 Difference]: With dead ends: 136 [2020-10-09 10:35:37,003 INFO L226 Difference]: Without dead ends: 131 [2020-10-09 10:35:37,004 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=96, Invalid=176, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:35:37,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2020-10-09 10:35:37,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 101. [2020-10-09 10:35:37,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-10-09 10:35:37,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 245 transitions. [2020-10-09 10:35:37,008 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 245 transitions. Word has length 11 [2020-10-09 10:35:37,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:35:37,009 INFO L481 AbstractCegarLoop]: Abstraction has 101 states and 245 transitions. [2020-10-09 10:35:37,009 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-09 10:35:37,009 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 245 transitions. [2020-10-09 10:35:37,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-09 10:35:37,009 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:35:37,009 INFO L421 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:35:37,218 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2020-10-09 10:35:37,219 INFO L429 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:35:37,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:35:37,219 INFO L82 PathProgramCache]: Analyzing trace with hash 1037803664, now seen corresponding path program 15 times [2020-10-09 10:35:37,219 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:35:37,220 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509304162] [2020-10-09 10:35:37,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:35:37,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:35:37,272 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:35:37,272 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509304162] [2020-10-09 10:35:37,272 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [752075642] [2020-10-09 10:35:37,272 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:35:37,324 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-09 10:35:37,324 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:35:37,325 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-09 10:35:37,326 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:35:37,390 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:35:37,391 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:35:37,391 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-09 10:35:37,391 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777279237] [2020-10-09 10:35:37,391 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-09 10:35:37,392 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:35:37,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-09 10:35:37,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-09 10:35:37,392 INFO L87 Difference]: Start difference. First operand 101 states and 245 transitions. Second operand 11 states. [2020-10-09 10:35:37,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:35:37,482 INFO L93 Difference]: Finished difference Result 130 states and 301 transitions. [2020-10-09 10:35:37,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-09 10:35:37,482 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 11 [2020-10-09 10:35:37,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:35:37,483 INFO L225 Difference]: With dead ends: 130 [2020-10-09 10:35:37,483 INFO L226 Difference]: Without dead ends: 128 [2020-10-09 10:35:37,484 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2020-10-09 10:35:37,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2020-10-09 10:35:37,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 99. [2020-10-09 10:35:37,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-10-09 10:35:37,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 240 transitions. [2020-10-09 10:35:37,487 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 240 transitions. Word has length 11 [2020-10-09 10:35:37,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:35:37,487 INFO L481 AbstractCegarLoop]: Abstraction has 99 states and 240 transitions. [2020-10-09 10:35:37,488 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-09 10:35:37,488 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 240 transitions. [2020-10-09 10:35:37,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-09 10:35:37,488 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:35:37,488 INFO L421 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:35:37,697 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2020-10-09 10:35:37,697 INFO L429 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:35:37,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:35:37,698 INFO L82 PathProgramCache]: Analyzing trace with hash 1038466754, now seen corresponding path program 16 times [2020-10-09 10:35:37,698 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:35:37,699 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177590856] [2020-10-09 10:35:37,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:35:37,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:35:37,760 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:35:37,760 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177590856] [2020-10-09 10:35:37,761 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [531267816] [2020-10-09 10:35:37,761 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:35:37,819 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-09 10:35:37,820 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:35:37,821 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-09 10:35:37,822 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:35:37,912 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:35:37,912 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:35:37,912 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-09 10:35:37,913 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487376497] [2020-10-09 10:35:37,913 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-09 10:35:37,913 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:35:37,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-09 10:35:37,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-09 10:35:37,914 INFO L87 Difference]: Start difference. First operand 99 states and 240 transitions. Second operand 11 states. [2020-10-09 10:35:38,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:35:38,080 INFO L93 Difference]: Finished difference Result 131 states and 303 transitions. [2020-10-09 10:35:38,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-09 10:35:38,081 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 11 [2020-10-09 10:35:38,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:35:38,083 INFO L225 Difference]: With dead ends: 131 [2020-10-09 10:35:38,083 INFO L226 Difference]: Without dead ends: 129 [2020-10-09 10:35:38,083 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=79, Invalid=161, Unknown=0, NotChecked=0, Total=240 [2020-10-09 10:35:38,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2020-10-09 10:35:38,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 101. [2020-10-09 10:35:38,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-10-09 10:35:38,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 247 transitions. [2020-10-09 10:35:38,088 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 247 transitions. Word has length 11 [2020-10-09 10:35:38,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:35:38,088 INFO L481 AbstractCegarLoop]: Abstraction has 101 states and 247 transitions. [2020-10-09 10:35:38,088 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-09 10:35:38,089 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 247 transitions. [2020-10-09 10:35:38,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-09 10:35:38,090 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:35:38,090 INFO L421 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:35:38,302 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2020-10-09 10:35:38,302 INFO L429 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:35:38,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:35:38,303 INFO L82 PathProgramCache]: Analyzing trace with hash 1038488113, now seen corresponding path program 17 times [2020-10-09 10:35:38,304 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:35:38,304 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467251446] [2020-10-09 10:35:38,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:35:38,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:35:38,390 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:35:38,391 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467251446] [2020-10-09 10:35:38,391 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [744653327] [2020-10-09 10:35:38,391 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:35:38,432 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-09 10:35:38,432 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:35:38,433 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-09 10:35:38,434 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:35:38,480 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 10:35:38,487 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:35:38,487 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:35:38,487 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-09 10:35:38,487 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128029645] [2020-10-09 10:35:38,488 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-09 10:35:38,488 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:35:38,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-09 10:35:38,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-09 10:35:38,488 INFO L87 Difference]: Start difference. First operand 101 states and 247 transitions. Second operand 11 states. [2020-10-09 10:35:38,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:35:38,607 INFO L93 Difference]: Finished difference Result 131 states and 311 transitions. [2020-10-09 10:35:38,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-09 10:35:38,607 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 11 [2020-10-09 10:35:38,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:35:38,608 INFO L225 Difference]: With dead ends: 131 [2020-10-09 10:35:38,609 INFO L226 Difference]: Without dead ends: 126 [2020-10-09 10:35:38,609 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=96, Invalid=176, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:35:38,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2020-10-09 10:35:38,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 101. [2020-10-09 10:35:38,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-10-09 10:35:38,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 247 transitions. [2020-10-09 10:35:38,613 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 247 transitions. Word has length 11 [2020-10-09 10:35:38,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:35:38,614 INFO L481 AbstractCegarLoop]: Abstraction has 101 states and 247 transitions. [2020-10-09 10:35:38,614 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-09 10:35:38,614 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 247 transitions. [2020-10-09 10:35:38,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-09 10:35:38,614 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:35:38,615 INFO L421 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:35:38,825 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:35:38,825 INFO L429 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:35:38,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:35:38,826 INFO L82 PathProgramCache]: Analyzing trace with hash 1038489074, now seen corresponding path program 18 times [2020-10-09 10:35:38,826 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:35:38,826 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311841870] [2020-10-09 10:35:38,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:35:38,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:35:38,871 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:35:38,871 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311841870] [2020-10-09 10:35:38,871 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [931422576] [2020-10-09 10:35:38,872 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:35:38,910 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-10-09 10:35:38,910 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:35:38,911 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-09 10:35:38,911 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:35:38,957 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-09 10:35:38,965 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:35:38,966 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:35:38,966 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-09 10:35:38,966 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441656646] [2020-10-09 10:35:38,966 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-09 10:35:38,967 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:35:38,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-09 10:35:38,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-09 10:35:38,967 INFO L87 Difference]: Start difference. First operand 101 states and 247 transitions. Second operand 11 states. [2020-10-09 10:35:39,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:35:39,195 INFO L93 Difference]: Finished difference Result 145 states and 339 transitions. [2020-10-09 10:35:39,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-09 10:35:39,197 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 11 [2020-10-09 10:35:39,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:35:39,198 INFO L225 Difference]: With dead ends: 145 [2020-10-09 10:35:39,198 INFO L226 Difference]: Without dead ends: 140 [2020-10-09 10:35:39,199 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=131, Invalid=249, Unknown=0, NotChecked=0, Total=380 [2020-10-09 10:35:39,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-10-09 10:35:39,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 99. [2020-10-09 10:35:39,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-10-09 10:35:39,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 240 transitions. [2020-10-09 10:35:39,203 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 240 transitions. Word has length 11 [2020-10-09 10:35:39,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:35:39,203 INFO L481 AbstractCegarLoop]: Abstraction has 99 states and 240 transitions. [2020-10-09 10:35:39,203 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-09 10:35:39,203 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 240 transitions. [2020-10-09 10:35:39,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-09 10:35:39,204 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:35:39,204 INFO L421 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:35:39,414 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2020-10-09 10:35:39,415 INFO L429 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:35:39,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:35:39,415 INFO L82 PathProgramCache]: Analyzing trace with hash 1038517904, now seen corresponding path program 19 times [2020-10-09 10:35:39,415 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:35:39,416 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343973845] [2020-10-09 10:35:39,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:35:39,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:35:39,460 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:35:39,460 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343973845] [2020-10-09 10:35:39,460 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2061618844] [2020-10-09 10:35:39,461 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:35:39,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:35:39,509 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-09 10:35:39,510 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:35:39,563 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 10:35:39,572 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:35:39,573 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:35:39,573 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-09 10:35:39,573 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289563728] [2020-10-09 10:35:39,573 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-09 10:35:39,573 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:35:39,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-09 10:35:39,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-09 10:35:39,574 INFO L87 Difference]: Start difference. First operand 99 states and 240 transitions. Second operand 11 states. [2020-10-09 10:35:39,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:35:39,739 INFO L93 Difference]: Finished difference Result 135 states and 315 transitions. [2020-10-09 10:35:39,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-09 10:35:39,740 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 11 [2020-10-09 10:35:39,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:35:39,742 INFO L225 Difference]: With dead ends: 135 [2020-10-09 10:35:39,742 INFO L226 Difference]: Without dead ends: 130 [2020-10-09 10:35:39,742 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=96, Invalid=176, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:35:39,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2020-10-09 10:35:39,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 98. [2020-10-09 10:35:39,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-10-09 10:35:39,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 231 transitions. [2020-10-09 10:35:39,746 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 231 transitions. Word has length 11 [2020-10-09 10:35:39,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:35:39,746 INFO L481 AbstractCegarLoop]: Abstraction has 98 states and 231 transitions. [2020-10-09 10:35:39,746 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-09 10:35:39,746 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 231 transitions. [2020-10-09 10:35:39,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-09 10:35:39,747 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:35:39,747 INFO L421 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:35:39,957 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:35:39,958 INFO L429 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:35:39,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:35:39,958 INFO L82 PathProgramCache]: Analyzing trace with hash 1266597800, now seen corresponding path program 4 times [2020-10-09 10:35:39,958 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:35:39,959 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968388201] [2020-10-09 10:35:39,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:35:39,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:35:40,018 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:35:40,018 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968388201] [2020-10-09 10:35:40,018 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [19869807] [2020-10-09 10:35:40,018 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:35:40,062 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-09 10:35:40,062 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:35:40,063 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-09 10:35:40,072 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:35:40,152 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 10:35:40,174 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:35:40,175 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:35:40,175 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2020-10-09 10:35:40,175 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363355546] [2020-10-09 10:35:40,176 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-09 10:35:40,176 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:35:40,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-09 10:35:40,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2020-10-09 10:35:40,177 INFO L87 Difference]: Start difference. First operand 98 states and 231 transitions. Second operand 14 states. [2020-10-09 10:35:40,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:35:40,297 INFO L93 Difference]: Finished difference Result 143 states and 333 transitions. [2020-10-09 10:35:40,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-09 10:35:40,298 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 11 [2020-10-09 10:35:40,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:35:40,299 INFO L225 Difference]: With dead ends: 143 [2020-10-09 10:35:40,299 INFO L226 Difference]: Without dead ends: 138 [2020-10-09 10:35:40,299 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=111, Invalid=231, Unknown=0, NotChecked=0, Total=342 [2020-10-09 10:35:40,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-10-09 10:35:40,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 105. [2020-10-09 10:35:40,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-10-09 10:35:40,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 257 transitions. [2020-10-09 10:35:40,305 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 257 transitions. Word has length 11 [2020-10-09 10:35:40,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:35:40,306 INFO L481 AbstractCegarLoop]: Abstraction has 105 states and 257 transitions. [2020-10-09 10:35:40,306 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-09 10:35:40,306 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 257 transitions. [2020-10-09 10:35:40,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-09 10:35:40,306 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:35:40,307 INFO L421 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:35:40,515 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2020-10-09 10:35:40,515 INFO L429 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:35:40,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:35:40,516 INFO L82 PathProgramCache]: Analyzing trace with hash 1615862390, now seen corresponding path program 10 times [2020-10-09 10:35:40,516 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:35:40,516 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11559738] [2020-10-09 10:35:40,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:35:40,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:35:40,609 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:35:40,610 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11559738] [2020-10-09 10:35:40,610 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1093478099] [2020-10-09 10:35:40,610 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:35:40,654 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-09 10:35:40,654 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:35:40,654 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-09 10:35:40,655 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:35:40,766 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:35:40,766 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:35:40,767 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-09 10:35:40,767 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639889161] [2020-10-09 10:35:40,767 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-09 10:35:40,767 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:35:40,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-09 10:35:40,768 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-09 10:35:40,768 INFO L87 Difference]: Start difference. First operand 105 states and 257 transitions. Second operand 13 states. [2020-10-09 10:35:40,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:35:40,807 INFO L93 Difference]: Finished difference Result 132 states and 311 transitions. [2020-10-09 10:35:40,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-09 10:35:40,808 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 11 [2020-10-09 10:35:40,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:35:40,809 INFO L225 Difference]: With dead ends: 132 [2020-10-09 10:35:40,809 INFO L226 Difference]: Without dead ends: 129 [2020-10-09 10:35:40,809 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-09 10:35:40,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2020-10-09 10:35:40,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 110. [2020-10-09 10:35:40,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-10-09 10:35:40,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 268 transitions. [2020-10-09 10:35:40,813 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 268 transitions. Word has length 11 [2020-10-09 10:35:40,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:35:40,813 INFO L481 AbstractCegarLoop]: Abstraction has 110 states and 268 transitions. [2020-10-09 10:35:40,813 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-09 10:35:40,813 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 268 transitions. [2020-10-09 10:35:40,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-09 10:35:40,814 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:35:40,814 INFO L421 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:35:41,022 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2020-10-09 10:35:41,023 INFO L429 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:35:41,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:35:41,023 INFO L82 PathProgramCache]: Analyzing trace with hash -2014169786, now seen corresponding path program 11 times [2020-10-09 10:35:41,024 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:35:41,024 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933523381] [2020-10-09 10:35:41,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:35:41,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:35:41,111 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:35:41,112 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933523381] [2020-10-09 10:35:41,112 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [413735855] [2020-10-09 10:35:41,112 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:35:41,156 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-09 10:35:41,156 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:35:41,157 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-09 10:35:41,157 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:35:41,244 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:35:41,245 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:35:41,245 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-09 10:35:41,245 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958565390] [2020-10-09 10:35:41,246 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-09 10:35:41,246 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:35:41,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-09 10:35:41,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2020-10-09 10:35:41,246 INFO L87 Difference]: Start difference. First operand 110 states and 268 transitions. Second operand 13 states. [2020-10-09 10:35:41,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:35:41,298 INFO L93 Difference]: Finished difference Result 143 states and 332 transitions. [2020-10-09 10:35:41,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-09 10:35:41,298 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 11 [2020-10-09 10:35:41,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:35:41,299 INFO L225 Difference]: With dead ends: 143 [2020-10-09 10:35:41,300 INFO L226 Difference]: Without dead ends: 140 [2020-10-09 10:35:41,300 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2020-10-09 10:35:41,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-10-09 10:35:41,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 110. [2020-10-09 10:35:41,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-10-09 10:35:41,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 268 transitions. [2020-10-09 10:35:41,304 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 268 transitions. Word has length 11 [2020-10-09 10:35:41,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:35:41,304 INFO L481 AbstractCegarLoop]: Abstraction has 110 states and 268 transitions. [2020-10-09 10:35:41,304 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-09 10:35:41,304 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 268 transitions. [2020-10-09 10:35:41,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-09 10:35:41,305 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:35:41,305 INFO L421 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:35:41,514 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2020-10-09 10:35:41,515 INFO L429 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:35:41,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:35:41,515 INFO L82 PathProgramCache]: Analyzing trace with hash -1992720266, now seen corresponding path program 12 times [2020-10-09 10:35:41,515 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:35:41,516 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694779506] [2020-10-09 10:35:41,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:35:41,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:35:41,586 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:35:41,586 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694779506] [2020-10-09 10:35:41,587 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1003600363] [2020-10-09 10:35:41,587 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:35:41,635 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-09 10:35:41,636 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:35:41,637 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-09 10:35:41,638 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:35:41,759 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:35:41,759 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:35:41,760 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-09 10:35:41,760 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389504377] [2020-10-09 10:35:41,760 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-09 10:35:41,760 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:35:41,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-09 10:35:41,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2020-10-09 10:35:41,763 INFO L87 Difference]: Start difference. First operand 110 states and 268 transitions. Second operand 13 states. [2020-10-09 10:35:41,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:35:41,863 INFO L93 Difference]: Finished difference Result 142 states and 332 transitions. [2020-10-09 10:35:41,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-09 10:35:41,864 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 11 [2020-10-09 10:35:41,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:35:41,866 INFO L225 Difference]: With dead ends: 142 [2020-10-09 10:35:41,866 INFO L226 Difference]: Without dead ends: 139 [2020-10-09 10:35:41,866 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2020-10-09 10:35:41,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2020-10-09 10:35:41,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 112. [2020-10-09 10:35:41,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-10-09 10:35:41,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 275 transitions. [2020-10-09 10:35:41,872 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 275 transitions. Word has length 11 [2020-10-09 10:35:41,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:35:41,873 INFO L481 AbstractCegarLoop]: Abstraction has 112 states and 275 transitions. [2020-10-09 10:35:41,873 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-09 10:35:41,873 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 275 transitions. [2020-10-09 10:35:41,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-09 10:35:41,874 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:35:41,874 INFO L421 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:35:42,074 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2020-10-09 10:35:42,075 INFO L429 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:35:42,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:35:42,075 INFO L82 PathProgramCache]: Analyzing trace with hash -1992028346, now seen corresponding path program 13 times [2020-10-09 10:35:42,076 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:35:42,076 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351136384] [2020-10-09 10:35:42,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:35:42,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:35:42,158 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:35:42,159 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351136384] [2020-10-09 10:35:42,159 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [202100038] [2020-10-09 10:35:42,159 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:35:42,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:35:42,220 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-09 10:35:42,221 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:35:42,334 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:35:42,335 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:35:42,335 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-09 10:35:42,335 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143336325] [2020-10-09 10:35:42,336 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-09 10:35:42,336 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:35:42,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-09 10:35:42,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2020-10-09 10:35:42,337 INFO L87 Difference]: Start difference. First operand 112 states and 275 transitions. Second operand 13 states. [2020-10-09 10:35:42,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:35:42,450 INFO L93 Difference]: Finished difference Result 141 states and 332 transitions. [2020-10-09 10:35:42,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-09 10:35:42,451 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 11 [2020-10-09 10:35:42,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:35:42,452 INFO L225 Difference]: With dead ends: 141 [2020-10-09 10:35:42,452 INFO L226 Difference]: Without dead ends: 138 [2020-10-09 10:35:42,452 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=81, Invalid=159, Unknown=0, NotChecked=0, Total=240 [2020-10-09 10:35:42,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-10-09 10:35:42,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 114. [2020-10-09 10:35:42,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-10-09 10:35:42,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 282 transitions. [2020-10-09 10:35:42,456 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 282 transitions. Word has length 11 [2020-10-09 10:35:42,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:35:42,456 INFO L481 AbstractCegarLoop]: Abstraction has 114 states and 282 transitions. [2020-10-09 10:35:42,456 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-09 10:35:42,456 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 282 transitions. [2020-10-09 10:35:42,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-09 10:35:42,457 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:35:42,457 INFO L421 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:35:42,666 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2020-10-09 10:35:42,667 INFO L429 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:35:42,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:35:42,667 INFO L82 PathProgramCache]: Analyzing trace with hash -1992006026, now seen corresponding path program 14 times [2020-10-09 10:35:42,667 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:35:42,668 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113844998] [2020-10-09 10:35:42,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:35:42,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:35:42,728 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:35:42,728 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113844998] [2020-10-09 10:35:42,728 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [900307606] [2020-10-09 10:35:42,729 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:35:42,778 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-09 10:35:42,778 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:35:42,779 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-09 10:35:42,780 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:35:42,854 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-09 10:35:42,864 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:35:42,865 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:35:42,865 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-09 10:35:42,865 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923878925] [2020-10-09 10:35:42,866 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-09 10:35:42,866 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:35:42,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-09 10:35:42,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-09 10:35:42,867 INFO L87 Difference]: Start difference. First operand 114 states and 282 transitions. Second operand 13 states. [2020-10-09 10:35:43,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:35:43,016 INFO L93 Difference]: Finished difference Result 150 states and 356 transitions. [2020-10-09 10:35:43,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-09 10:35:43,017 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 11 [2020-10-09 10:35:43,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:35:43,018 INFO L225 Difference]: With dead ends: 150 [2020-10-09 10:35:43,018 INFO L226 Difference]: Without dead ends: 144 [2020-10-09 10:35:43,018 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=103, Invalid=203, Unknown=0, NotChecked=0, Total=306 [2020-10-09 10:35:43,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-10-09 10:35:43,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 113. [2020-10-09 10:35:43,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-10-09 10:35:43,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 282 transitions. [2020-10-09 10:35:43,022 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 282 transitions. Word has length 11 [2020-10-09 10:35:43,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:35:43,023 INFO L481 AbstractCegarLoop]: Abstraction has 113 states and 282 transitions. [2020-10-09 10:35:43,023 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-09 10:35:43,023 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 282 transitions. [2020-10-09 10:35:43,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-09 10:35:43,023 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:35:43,023 INFO L421 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:35:43,224 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37,31 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:35:43,224 INFO L429 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:35:43,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:35:43,225 INFO L82 PathProgramCache]: Analyzing trace with hash 1441283596, now seen corresponding path program 20 times [2020-10-09 10:35:43,225 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:35:43,225 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913506256] [2020-10-09 10:35:43,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:35:43,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:35:43,291 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:35:43,291 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913506256] [2020-10-09 10:35:43,291 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1248310087] [2020-10-09 10:35:43,291 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:35:43,329 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-09 10:35:43,329 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:35:43,330 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-09 10:35:43,331 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:35:43,429 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:35:43,429 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:35:43,429 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-09 10:35:43,429 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950603483] [2020-10-09 10:35:43,430 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-09 10:35:43,430 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:35:43,430 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-09 10:35:43,430 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-09 10:35:43,430 INFO L87 Difference]: Start difference. First operand 113 states and 282 transitions. Second operand 13 states. [2020-10-09 10:35:43,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:35:43,472 INFO L93 Difference]: Finished difference Result 138 states and 332 transitions. [2020-10-09 10:35:43,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-09 10:35:43,473 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-09 10:35:43,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:35:43,474 INFO L225 Difference]: With dead ends: 138 [2020-10-09 10:35:43,474 INFO L226 Difference]: Without dead ends: 136 [2020-10-09 10:35:43,474 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-09 10:35:43,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-10-09 10:35:43,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 117. [2020-10-09 10:35:43,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2020-10-09 10:35:43,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 294 transitions. [2020-10-09 10:35:43,479 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 294 transitions. Word has length 12 [2020-10-09 10:35:43,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:35:43,479 INFO L481 AbstractCegarLoop]: Abstraction has 117 states and 294 transitions. [2020-10-09 10:35:43,479 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-09 10:35:43,479 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 294 transitions. [2020-10-09 10:35:43,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-09 10:35:43,480 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:35:43,480 INFO L421 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:35:43,691 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2020-10-09 10:35:43,691 INFO L429 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:35:43,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:35:43,692 INFO L82 PathProgramCache]: Analyzing trace with hash 1441284557, now seen corresponding path program 21 times [2020-10-09 10:35:43,692 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:35:43,692 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680475538] [2020-10-09 10:35:43,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:35:43,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:35:43,754 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:35:43,754 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680475538] [2020-10-09 10:35:43,754 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [915326879] [2020-10-09 10:35:43,754 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:35:43,796 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-09 10:35:43,796 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:35:43,797 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-09 10:35:43,798 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:35:43,903 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:35:43,903 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:35:43,903 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-09 10:35:43,904 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260812538] [2020-10-09 10:35:43,904 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-09 10:35:43,904 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:35:43,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-09 10:35:43,904 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-09 10:35:43,905 INFO L87 Difference]: Start difference. First operand 117 states and 294 transitions. Second operand 13 states. [2020-10-09 10:35:44,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:35:44,015 INFO L93 Difference]: Finished difference Result 145 states and 346 transitions. [2020-10-09 10:35:44,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-09 10:35:44,016 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-09 10:35:44,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:35:44,017 INFO L225 Difference]: With dead ends: 145 [2020-10-09 10:35:44,017 INFO L226 Difference]: Without dead ends: 143 [2020-10-09 10:35:44,018 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=83, Invalid=157, Unknown=0, NotChecked=0, Total=240 [2020-10-09 10:35:44,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2020-10-09 10:35:44,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 115. [2020-10-09 10:35:44,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2020-10-09 10:35:44,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 288 transitions. [2020-10-09 10:35:44,022 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 288 transitions. Word has length 12 [2020-10-09 10:35:44,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:35:44,022 INFO L481 AbstractCegarLoop]: Abstraction has 115 states and 288 transitions. [2020-10-09 10:35:44,022 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-09 10:35:44,022 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 288 transitions. [2020-10-09 10:35:44,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-09 10:35:44,023 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:35:44,023 INFO L421 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:35:44,233 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2020-10-09 10:35:44,233 INFO L429 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:35:44,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:35:44,234 INFO L82 PathProgramCache]: Analyzing trace with hash 1441313387, now seen corresponding path program 22 times [2020-10-09 10:35:44,234 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:35:44,234 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760519217] [2020-10-09 10:35:44,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:35:44,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:35:44,292 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:35:44,293 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760519217] [2020-10-09 10:35:44,293 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1834492961] [2020-10-09 10:35:44,293 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:35:44,337 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-09 10:35:44,337 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:35:44,339 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-09 10:35:44,340 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:35:44,432 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:35:44,432 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:35:44,432 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-09 10:35:44,433 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898491804] [2020-10-09 10:35:44,433 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-09 10:35:44,433 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:35:44,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-09 10:35:44,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2020-10-09 10:35:44,434 INFO L87 Difference]: Start difference. First operand 115 states and 288 transitions. Second operand 13 states. [2020-10-09 10:35:44,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:35:44,563 INFO L93 Difference]: Finished difference Result 150 states and 356 transitions. [2020-10-09 10:35:44,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-09 10:35:44,564 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-09 10:35:44,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:35:44,565 INFO L225 Difference]: With dead ends: 150 [2020-10-09 10:35:44,565 INFO L226 Difference]: Without dead ends: 148 [2020-10-09 10:35:44,565 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=95, Invalid=177, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:35:44,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2020-10-09 10:35:44,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 116. [2020-10-09 10:35:44,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-10-09 10:35:44,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 289 transitions. [2020-10-09 10:35:44,569 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 289 transitions. Word has length 12 [2020-10-09 10:35:44,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:35:44,569 INFO L481 AbstractCegarLoop]: Abstraction has 116 states and 289 transitions. [2020-10-09 10:35:44,570 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-09 10:35:44,570 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 289 transitions. [2020-10-09 10:35:44,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-09 10:35:44,570 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:35:44,570 INFO L421 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:35:44,778 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,34 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:35:44,778 INFO L429 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:35:44,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:35:44,779 INFO L82 PathProgramCache]: Analyzing trace with hash 1442207117, now seen corresponding path program 23 times [2020-10-09 10:35:44,779 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:35:44,779 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921207238] [2020-10-09 10:35:44,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:35:44,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:35:44,851 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:35:44,851 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921207238] [2020-10-09 10:35:44,852 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [36149427] [2020-10-09 10:35:44,852 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:35:44,898 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-09 10:35:44,899 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:35:44,899 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-09 10:35:44,900 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:35:44,996 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:35:44,997 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:35:44,997 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-09 10:35:44,997 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555389596] [2020-10-09 10:35:44,997 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-09 10:35:44,997 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:35:44,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-09 10:35:44,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2020-10-09 10:35:44,998 INFO L87 Difference]: Start difference. First operand 116 states and 289 transitions. Second operand 13 states. [2020-10-09 10:35:45,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:35:45,110 INFO L93 Difference]: Finished difference Result 148 states and 352 transitions. [2020-10-09 10:35:45,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-09 10:35:45,110 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-09 10:35:45,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:35:45,111 INFO L225 Difference]: With dead ends: 148 [2020-10-09 10:35:45,111 INFO L226 Difference]: Without dead ends: 146 [2020-10-09 10:35:45,112 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=94, Invalid=178, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:35:45,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-10-09 10:35:45,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 120. [2020-10-09 10:35:45,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-10-09 10:35:45,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 299 transitions. [2020-10-09 10:35:45,116 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 299 transitions. Word has length 12 [2020-10-09 10:35:45,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:35:45,116 INFO L481 AbstractCegarLoop]: Abstraction has 120 states and 299 transitions. [2020-10-09 10:35:45,116 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-09 10:35:45,116 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 299 transitions. [2020-10-09 10:35:45,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-09 10:35:45,117 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:35:45,117 INFO L421 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:35:45,327 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2020-10-09 10:35:45,328 INFO L429 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:35:45,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:35:45,328 INFO L82 PathProgramCache]: Analyzing trace with hash 1442208078, now seen corresponding path program 24 times [2020-10-09 10:35:45,328 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:35:45,329 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243801811] [2020-10-09 10:35:45,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:35:45,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:35:45,399 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:35:45,400 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243801811] [2020-10-09 10:35:45,400 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1457843898] [2020-10-09 10:35:45,400 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:35:45,438 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-10-09 10:35:45,439 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:35:45,440 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-09 10:35:45,440 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:35:45,508 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:35:45,509 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:35:45,509 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-09 10:35:45,509 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626061611] [2020-10-09 10:35:45,509 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-09 10:35:45,509 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:35:45,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-09 10:35:45,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2020-10-09 10:35:45,510 INFO L87 Difference]: Start difference. First operand 120 states and 299 transitions. Second operand 13 states. [2020-10-09 10:35:45,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:35:45,623 INFO L93 Difference]: Finished difference Result 149 states and 354 transitions. [2020-10-09 10:35:45,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-09 10:35:45,624 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-09 10:35:45,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:35:45,625 INFO L225 Difference]: With dead ends: 149 [2020-10-09 10:35:45,625 INFO L226 Difference]: Without dead ends: 147 [2020-10-09 10:35:45,626 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=95, Invalid=177, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:35:45,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2020-10-09 10:35:45,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 118. [2020-10-09 10:35:45,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-10-09 10:35:45,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 293 transitions. [2020-10-09 10:35:45,633 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 293 transitions. Word has length 12 [2020-10-09 10:35:45,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:35:45,634 INFO L481 AbstractCegarLoop]: Abstraction has 118 states and 293 transitions. [2020-10-09 10:35:45,634 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-09 10:35:45,635 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 293 transitions. [2020-10-09 10:35:45,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-09 10:35:45,635 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:35:45,635 INFO L421 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:35:45,848 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,36 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:35:45,849 INFO L429 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:35:45,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:35:45,849 INFO L82 PathProgramCache]: Analyzing trace with hash 2078513086, now seen corresponding path program 25 times [2020-10-09 10:35:45,850 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:35:45,850 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498349230] [2020-10-09 10:35:45,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:35:45,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:35:45,936 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:35:45,936 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498349230] [2020-10-09 10:35:45,936 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1989705665] [2020-10-09 10:35:45,936 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:35:45,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:35:45,985 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-09 10:35:45,991 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:35:46,105 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:35:46,106 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:35:46,106 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-09 10:35:46,106 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180747670] [2020-10-09 10:35:46,106 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-09 10:35:46,107 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:35:46,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-09 10:35:46,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2020-10-09 10:35:46,107 INFO L87 Difference]: Start difference. First operand 118 states and 293 transitions. Second operand 13 states. [2020-10-09 10:35:46,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:35:46,192 INFO L93 Difference]: Finished difference Result 152 states and 360 transitions. [2020-10-09 10:35:46,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-09 10:35:46,192 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-09 10:35:46,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:35:46,194 INFO L225 Difference]: With dead ends: 152 [2020-10-09 10:35:46,194 INFO L226 Difference]: Without dead ends: 150 [2020-10-09 10:35:46,194 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2020-10-09 10:35:46,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2020-10-09 10:35:46,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 122. [2020-10-09 10:35:46,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-10-09 10:35:46,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 305 transitions. [2020-10-09 10:35:46,199 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 305 transitions. Word has length 12 [2020-10-09 10:35:46,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:35:46,200 INFO L481 AbstractCegarLoop]: Abstraction has 122 states and 305 transitions. [2020-10-09 10:35:46,200 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-09 10:35:46,200 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 305 transitions. [2020-10-09 10:35:46,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-09 10:35:46,200 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:35:46,201 INFO L421 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:35:46,411 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2020-10-09 10:35:46,412 INFO L429 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:35:46,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:35:46,412 INFO L82 PathProgramCache]: Analyzing trace with hash 2078514047, now seen corresponding path program 26 times [2020-10-09 10:35:46,412 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:35:46,413 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240692802] [2020-10-09 10:35:46,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:35:46,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:35:46,500 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:35:46,501 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240692802] [2020-10-09 10:35:46,501 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1128998375] [2020-10-09 10:35:46,501 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:35:46,542 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-09 10:35:46,543 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:35:46,543 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-09 10:35:46,544 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:35:46,639 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:35:46,639 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:35:46,640 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-09 10:35:46,640 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872178920] [2020-10-09 10:35:46,640 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-09 10:35:46,640 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:35:46,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-09 10:35:46,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2020-10-09 10:35:46,641 INFO L87 Difference]: Start difference. First operand 122 states and 305 transitions. Second operand 13 states. [2020-10-09 10:35:46,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:35:46,776 INFO L93 Difference]: Finished difference Result 153 states and 361 transitions. [2020-10-09 10:35:46,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-09 10:35:46,776 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-09 10:35:46,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:35:46,777 INFO L225 Difference]: With dead ends: 153 [2020-10-09 10:35:46,778 INFO L226 Difference]: Without dead ends: 151 [2020-10-09 10:35:46,778 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=90, Invalid=182, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:35:46,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2020-10-09 10:35:46,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 120. [2020-10-09 10:35:46,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-10-09 10:35:46,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 299 transitions. [2020-10-09 10:35:46,781 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 299 transitions. Word has length 12 [2020-10-09 10:35:46,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:35:46,782 INFO L481 AbstractCegarLoop]: Abstraction has 120 states and 299 transitions. [2020-10-09 10:35:46,782 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-09 10:35:46,782 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 299 transitions. [2020-10-09 10:35:46,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-09 10:35:46,783 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:35:46,783 INFO L421 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:35:46,994 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2020-10-09 10:35:46,995 INFO L429 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:35:46,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:35:46,996 INFO L82 PathProgramCache]: Analyzing trace with hash 2078542877, now seen corresponding path program 27 times [2020-10-09 10:35:46,996 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:35:46,996 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809939875] [2020-10-09 10:35:46,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:35:47,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:35:47,061 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:35:47,061 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809939875] [2020-10-09 10:35:47,061 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1404159865] [2020-10-09 10:35:47,062 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:35:47,103 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-09 10:35:47,103 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:35:47,104 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-09 10:35:47,104 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:35:47,198 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:35:47,199 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:35:47,199 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-09 10:35:47,199 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162959362] [2020-10-09 10:35:47,200 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-09 10:35:47,200 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:35:47,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-09 10:35:47,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2020-10-09 10:35:47,200 INFO L87 Difference]: Start difference. First operand 120 states and 299 transitions. Second operand 13 states. [2020-10-09 10:35:47,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:35:47,347 INFO L93 Difference]: Finished difference Result 156 states and 367 transitions. [2020-10-09 10:35:47,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-09 10:35:47,348 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-09 10:35:47,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:35:47,349 INFO L225 Difference]: With dead ends: 156 [2020-10-09 10:35:47,350 INFO L226 Difference]: Without dead ends: 154 [2020-10-09 10:35:47,350 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=101, Invalid=205, Unknown=0, NotChecked=0, Total=306 [2020-10-09 10:35:47,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-10-09 10:35:47,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 119. [2020-10-09 10:35:47,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-10-09 10:35:47,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 295 transitions. [2020-10-09 10:35:47,353 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 295 transitions. Word has length 12 [2020-10-09 10:35:47,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:35:47,354 INFO L481 AbstractCegarLoop]: Abstraction has 119 states and 295 transitions. [2020-10-09 10:35:47,354 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-09 10:35:47,354 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 295 transitions. [2020-10-09 10:35:47,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-09 10:35:47,354 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:35:47,354 INFO L421 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:35:47,556 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2020-10-09 10:35:47,556 INFO L429 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:35:47,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:35:47,557 INFO L82 PathProgramCache]: Analyzing trace with hash 2099068876, now seen corresponding path program 28 times [2020-10-09 10:35:47,557 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:35:47,557 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834587039] [2020-10-09 10:35:47,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:35:47,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:35:47,628 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:35:47,628 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834587039] [2020-10-09 10:35:47,628 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [535895416] [2020-10-09 10:35:47,628 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:35:47,674 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-09 10:35:47,674 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:35:47,675 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-09 10:35:47,676 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:35:47,782 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:35:47,782 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:35:47,782 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-09 10:35:47,782 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645467668] [2020-10-09 10:35:47,783 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-09 10:35:47,783 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:35:47,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-09 10:35:47,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2020-10-09 10:35:47,783 INFO L87 Difference]: Start difference. First operand 119 states and 295 transitions. Second operand 13 states. [2020-10-09 10:35:47,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:35:47,865 INFO L93 Difference]: Finished difference Result 148 states and 351 transitions. [2020-10-09 10:35:47,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-09 10:35:47,865 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-09 10:35:47,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:35:47,867 INFO L225 Difference]: With dead ends: 148 [2020-10-09 10:35:47,867 INFO L226 Difference]: Without dead ends: 146 [2020-10-09 10:35:47,867 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2020-10-09 10:35:47,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-10-09 10:35:47,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 121. [2020-10-09 10:35:47,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-10-09 10:35:47,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 301 transitions. [2020-10-09 10:35:47,871 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 301 transitions. Word has length 12 [2020-10-09 10:35:47,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:35:47,872 INFO L481 AbstractCegarLoop]: Abstraction has 121 states and 301 transitions. [2020-10-09 10:35:47,872 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-09 10:35:47,872 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 301 transitions. [2020-10-09 10:35:47,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-09 10:35:47,873 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:35:47,873 INFO L421 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:35:48,080 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2020-10-09 10:35:48,081 INFO L429 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:35:48,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:35:48,081 INFO L82 PathProgramCache]: Analyzing trace with hash 2099069837, now seen corresponding path program 29 times [2020-10-09 10:35:48,081 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:35:48,082 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129221847] [2020-10-09 10:35:48,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:35:48,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:35:48,141 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:35:48,141 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129221847] [2020-10-09 10:35:48,142 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [892886162] [2020-10-09 10:35:48,142 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:35:48,191 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-09 10:35:48,191 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:35:48,192 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-09 10:35:48,192 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:35:48,279 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:35:48,279 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:35:48,280 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-09 10:35:48,280 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926675861] [2020-10-09 10:35:48,280 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-09 10:35:48,280 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:35:48,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-09 10:35:48,281 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2020-10-09 10:35:48,281 INFO L87 Difference]: Start difference. First operand 121 states and 301 transitions. Second operand 13 states. [2020-10-09 10:35:48,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:35:48,430 INFO L93 Difference]: Finished difference Result 157 states and 368 transitions. [2020-10-09 10:35:48,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-09 10:35:48,431 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-09 10:35:48,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:35:48,432 INFO L225 Difference]: With dead ends: 157 [2020-10-09 10:35:48,432 INFO L226 Difference]: Without dead ends: 155 [2020-10-09 10:35:48,432 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=101, Invalid=205, Unknown=0, NotChecked=0, Total=306 [2020-10-09 10:35:48,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2020-10-09 10:35:48,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 120. [2020-10-09 10:35:48,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-10-09 10:35:48,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 297 transitions. [2020-10-09 10:35:48,435 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 297 transitions. Word has length 12 [2020-10-09 10:35:48,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:35:48,436 INFO L481 AbstractCegarLoop]: Abstraction has 120 states and 297 transitions. [2020-10-09 10:35:48,436 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-09 10:35:48,436 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 297 transitions. [2020-10-09 10:35:48,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-09 10:35:48,436 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:35:48,437 INFO L421 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:35:48,646 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47,41 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:35:48,646 INFO L429 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:35:48,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:35:48,647 INFO L82 PathProgramCache]: Analyzing trace with hash 2099731966, now seen corresponding path program 30 times [2020-10-09 10:35:48,647 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:35:48,647 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000382226] [2020-10-09 10:35:48,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:35:48,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:35:48,712 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:35:48,713 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000382226] [2020-10-09 10:35:48,713 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1711193613] [2020-10-09 10:35:48,713 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:35:48,751 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-10-09 10:35:48,751 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:35:48,752 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:35:48,753 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:35:48,773 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:35:48,773 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:35:48,773 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2020-10-09 10:35:48,773 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986763146] [2020-10-09 10:35:48,773 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-09 10:35:48,774 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:35:48,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-09 10:35:48,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-09 10:35:48,774 INFO L87 Difference]: Start difference. First operand 120 states and 297 transitions. Second operand 9 states. [2020-10-09 10:35:48,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:35:48,864 INFO L93 Difference]: Finished difference Result 149 states and 350 transitions. [2020-10-09 10:35:48,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-09 10:35:48,865 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 12 [2020-10-09 10:35:48,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:35:48,866 INFO L225 Difference]: With dead ends: 149 [2020-10-09 10:35:48,866 INFO L226 Difference]: Without dead ends: 147 [2020-10-09 10:35:48,866 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2020-10-09 10:35:48,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2020-10-09 10:35:48,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 124. [2020-10-09 10:35:48,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-10-09 10:35:48,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 303 transitions. [2020-10-09 10:35:48,870 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 303 transitions. Word has length 12 [2020-10-09 10:35:48,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:35:48,870 INFO L481 AbstractCegarLoop]: Abstraction has 124 states and 303 transitions. [2020-10-09 10:35:48,870 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-09 10:35:48,870 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 303 transitions. [2020-10-09 10:35:48,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-09 10:35:48,871 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:35:48,871 INFO L421 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:35:49,074 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2020-10-09 10:35:49,075 INFO L429 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:35:49,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:35:49,075 INFO L82 PathProgramCache]: Analyzing trace with hash 2099754286, now seen corresponding path program 31 times [2020-10-09 10:35:49,075 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:35:49,076 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992064334] [2020-10-09 10:35:49,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:35:49,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:35:49,148 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:35:49,148 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992064334] [2020-10-09 10:35:49,149 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1108580183] [2020-10-09 10:35:49,149 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:35:49,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:35:49,195 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-09 10:35:49,195 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:35:49,285 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-09 10:35:49,322 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:35:49,322 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:35:49,322 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-09 10:35:49,323 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666212343] [2020-10-09 10:35:49,323 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-09 10:35:49,323 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:35:49,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-09 10:35:49,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-10-09 10:35:49,324 INFO L87 Difference]: Start difference. First operand 124 states and 303 transitions. Second operand 13 states. [2020-10-09 10:35:49,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:35:49,573 INFO L93 Difference]: Finished difference Result 164 states and 389 transitions. [2020-10-09 10:35:49,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-09 10:35:49,574 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-09 10:35:49,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:35:49,575 INFO L225 Difference]: With dead ends: 164 [2020-10-09 10:35:49,575 INFO L226 Difference]: Without dead ends: 159 [2020-10-09 10:35:49,576 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=143, Invalid=277, Unknown=0, NotChecked=0, Total=420 [2020-10-09 10:35:49,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2020-10-09 10:35:49,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 122. [2020-10-09 10:35:49,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-10-09 10:35:49,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 296 transitions. [2020-10-09 10:35:49,579 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 296 transitions. Word has length 12 [2020-10-09 10:35:49,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:35:49,580 INFO L481 AbstractCegarLoop]: Abstraction has 122 states and 296 transitions. [2020-10-09 10:35:49,580 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-09 10:35:49,580 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 296 transitions. [2020-10-09 10:35:49,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-09 10:35:49,580 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:35:49,581 INFO L421 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:35:49,784 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2020-10-09 10:35:49,785 INFO L429 AbstractCegarLoop]: === Iteration 51 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:35:49,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:35:49,785 INFO L82 PathProgramCache]: Analyzing trace with hash 2099761757, now seen corresponding path program 32 times [2020-10-09 10:35:49,786 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:35:49,786 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089191998] [2020-10-09 10:35:49,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:35:49,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:35:49,840 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:35:49,841 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089191998] [2020-10-09 10:35:49,841 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1755105755] [2020-10-09 10:35:49,841 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:35:49,880 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-09 10:35:49,880 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:35:49,880 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-09 10:35:49,881 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:35:49,998 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:35:49,998 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:35:49,999 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-09 10:35:49,999 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535854662] [2020-10-09 10:35:49,999 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-09 10:35:49,999 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:35:49,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-09 10:35:50,000 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2020-10-09 10:35:50,000 INFO L87 Difference]: Start difference. First operand 122 states and 296 transitions. Second operand 13 states. [2020-10-09 10:35:50,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:35:50,178 INFO L93 Difference]: Finished difference Result 156 states and 367 transitions. [2020-10-09 10:35:50,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-09 10:35:50,178 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-09 10:35:50,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:35:50,180 INFO L225 Difference]: With dead ends: 156 [2020-10-09 10:35:50,180 INFO L226 Difference]: Without dead ends: 154 [2020-10-09 10:35:50,181 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=110, Invalid=232, Unknown=0, NotChecked=0, Total=342 [2020-10-09 10:35:50,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-10-09 10:35:50,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 124. [2020-10-09 10:35:50,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-10-09 10:35:50,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 303 transitions. [2020-10-09 10:35:50,184 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 303 transitions. Word has length 12 [2020-10-09 10:35:50,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:35:50,184 INFO L481 AbstractCegarLoop]: Abstraction has 124 states and 303 transitions. [2020-10-09 10:35:50,184 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-09 10:35:50,184 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 303 transitions. [2020-10-09 10:35:50,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-09 10:35:50,185 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:35:50,185 INFO L421 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:35:50,386 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,44 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:35:50,386 INFO L429 AbstractCegarLoop]: === Iteration 52 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:35:50,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:35:50,387 INFO L82 PathProgramCache]: Analyzing trace with hash 2099783116, now seen corresponding path program 33 times [2020-10-09 10:35:50,387 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:35:50,387 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742040980] [2020-10-09 10:35:50,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:35:50,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:35:50,439 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:35:50,439 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742040980] [2020-10-09 10:35:50,439 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [587514416] [2020-10-09 10:35:50,439 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:35:50,480 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-09 10:35:50,480 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:35:50,480 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-09 10:35:50,481 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:35:50,567 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 10:35:50,598 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:35:50,599 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:35:50,599 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-09 10:35:50,599 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9426004] [2020-10-09 10:35:50,600 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-09 10:35:50,600 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:35:50,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-09 10:35:50,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2020-10-09 10:35:50,600 INFO L87 Difference]: Start difference. First operand 124 states and 303 transitions. Second operand 13 states. [2020-10-09 10:35:50,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:35:50,960 INFO L93 Difference]: Finished difference Result 176 states and 416 transitions. [2020-10-09 10:35:50,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-09 10:35:50,961 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-09 10:35:50,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:35:50,962 INFO L225 Difference]: With dead ends: 176 [2020-10-09 10:35:50,962 INFO L226 Difference]: Without dead ends: 171 [2020-10-09 10:35:50,963 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=186, Invalid=366, Unknown=0, NotChecked=0, Total=552 [2020-10-09 10:35:50,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2020-10-09 10:35:50,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 124. [2020-10-09 10:35:50,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-10-09 10:35:50,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 303 transitions. [2020-10-09 10:35:50,967 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 303 transitions. Word has length 12 [2020-10-09 10:35:50,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:35:50,967 INFO L481 AbstractCegarLoop]: Abstraction has 124 states and 303 transitions. [2020-10-09 10:35:50,967 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-09 10:35:50,967 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 303 transitions. [2020-10-09 10:35:50,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-09 10:35:50,968 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:35:50,968 INFO L421 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:35:51,177 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable51 [2020-10-09 10:35:51,177 INFO L429 AbstractCegarLoop]: === Iteration 53 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:35:51,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:35:51,178 INFO L82 PathProgramCache]: Analyzing trace with hash 2099784077, now seen corresponding path program 34 times [2020-10-09 10:35:51,178 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:35:51,178 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079495866] [2020-10-09 10:35:51,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:35:51,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:35:51,230 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:35:51,231 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079495866] [2020-10-09 10:35:51,231 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1177537106] [2020-10-09 10:35:51,231 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:35:51,270 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-09 10:35:51,270 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:35:51,270 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-09 10:35:51,271 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:35:51,353 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-09 10:35:51,386 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:35:51,387 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:35:51,387 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-09 10:35:51,387 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744136694] [2020-10-09 10:35:51,387 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-09 10:35:51,388 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:35:51,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-09 10:35:51,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-10-09 10:35:51,388 INFO L87 Difference]: Start difference. First operand 124 states and 303 transitions. Second operand 13 states. [2020-10-09 10:35:51,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:35:51,632 INFO L93 Difference]: Finished difference Result 166 states and 393 transitions. [2020-10-09 10:35:51,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-09 10:35:51,632 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-09 10:35:51,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:35:51,634 INFO L225 Difference]: With dead ends: 166 [2020-10-09 10:35:51,634 INFO L226 Difference]: Without dead ends: 161 [2020-10-09 10:35:51,634 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=143, Invalid=277, Unknown=0, NotChecked=0, Total=420 [2020-10-09 10:35:51,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2020-10-09 10:35:51,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 121. [2020-10-09 10:35:51,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-10-09 10:35:51,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 294 transitions. [2020-10-09 10:35:51,638 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 294 transitions. Word has length 12 [2020-10-09 10:35:51,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:35:51,638 INFO L481 AbstractCegarLoop]: Abstraction has 121 states and 294 transitions. [2020-10-09 10:35:51,638 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-09 10:35:51,638 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 294 transitions. [2020-10-09 10:35:51,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-09 10:35:51,639 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:35:51,639 INFO L421 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:35:51,847 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,46 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:35:51,848 INFO L429 AbstractCegarLoop]: === Iteration 54 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:35:51,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:35:51,848 INFO L82 PathProgramCache]: Analyzing trace with hash 2099992397, now seen corresponding path program 35 times [2020-10-09 10:35:51,848 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:35:51,849 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273215867] [2020-10-09 10:35:51,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:35:51,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:35:51,911 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:35:51,912 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273215867] [2020-10-09 10:35:51,912 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [198705318] [2020-10-09 10:35:51,912 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:35:51,954 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-09 10:35:51,954 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:35:51,955 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-09 10:35:51,956 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:35:52,048 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:35:52,049 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:35:52,049 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-09 10:35:52,049 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40419377] [2020-10-09 10:35:52,050 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-09 10:35:52,050 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:35:52,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-09 10:35:52,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2020-10-09 10:35:52,050 INFO L87 Difference]: Start difference. First operand 121 states and 294 transitions. Second operand 13 states. [2020-10-09 10:35:52,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:35:52,207 INFO L93 Difference]: Finished difference Result 163 states and 379 transitions. [2020-10-09 10:35:52,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-09 10:35:52,208 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-09 10:35:52,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:35:52,209 INFO L225 Difference]: With dead ends: 163 [2020-10-09 10:35:52,209 INFO L226 Difference]: Without dead ends: 161 [2020-10-09 10:35:52,209 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=104, Invalid=238, Unknown=0, NotChecked=0, Total=342 [2020-10-09 10:35:52,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2020-10-09 10:35:52,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 123. [2020-10-09 10:35:52,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-10-09 10:35:52,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 301 transitions. [2020-10-09 10:35:52,212 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 301 transitions. Word has length 12 [2020-10-09 10:35:52,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:35:52,213 INFO L481 AbstractCegarLoop]: Abstraction has 123 states and 301 transitions. [2020-10-09 10:35:52,213 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-09 10:35:52,213 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 301 transitions. [2020-10-09 10:35:52,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-09 10:35:52,213 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:35:52,213 INFO L421 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:35:52,421 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable53 [2020-10-09 10:35:52,422 INFO L429 AbstractCegarLoop]: === Iteration 55 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:35:52,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:35:52,422 INFO L82 PathProgramCache]: Analyzing trace with hash 2100655487, now seen corresponding path program 36 times [2020-10-09 10:35:52,422 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:35:52,423 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895892714] [2020-10-09 10:35:52,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:35:52,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:35:52,479 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:35:52,480 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895892714] [2020-10-09 10:35:52,480 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2088549121] [2020-10-09 10:35:52,480 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:35:52,516 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-10-09 10:35:52,516 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:35:52,517 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-09 10:35:52,517 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:35:52,614 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:35:52,614 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:35:52,614 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-09 10:35:52,614 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183750948] [2020-10-09 10:35:52,615 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-09 10:35:52,615 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:35:52,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-09 10:35:52,616 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-10-09 10:35:52,616 INFO L87 Difference]: Start difference. First operand 123 states and 301 transitions. Second operand 13 states. [2020-10-09 10:35:52,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:35:52,875 INFO L93 Difference]: Finished difference Result 170 states and 399 transitions. [2020-10-09 10:35:52,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-09 10:35:52,875 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-09 10:35:52,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:35:52,877 INFO L225 Difference]: With dead ends: 170 [2020-10-09 10:35:52,877 INFO L226 Difference]: Without dead ends: 168 [2020-10-09 10:35:52,877 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=149, Invalid=313, Unknown=0, NotChecked=0, Total=462 [2020-10-09 10:35:52,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2020-10-09 10:35:52,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 125. [2020-10-09 10:35:52,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-10-09 10:35:52,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 308 transitions. [2020-10-09 10:35:52,881 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 308 transitions. Word has length 12 [2020-10-09 10:35:52,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:35:52,881 INFO L481 AbstractCegarLoop]: Abstraction has 125 states and 308 transitions. [2020-10-09 10:35:52,881 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-09 10:35:52,881 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 308 transitions. [2020-10-09 10:35:52,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-09 10:35:52,882 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:35:52,882 INFO L421 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:35:53,082 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54,48 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:35:53,082 INFO L429 AbstractCegarLoop]: === Iteration 56 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:35:53,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:35:53,083 INFO L82 PathProgramCache]: Analyzing trace with hash 2100676846, now seen corresponding path program 37 times [2020-10-09 10:35:53,083 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:35:53,084 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823031806] [2020-10-09 10:35:53,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:35:53,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:35:53,138 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:35:53,138 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823031806] [2020-10-09 10:35:53,138 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1393349596] [2020-10-09 10:35:53,139 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:35:53,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:35:53,176 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-09 10:35:53,177 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:35:53,246 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 10:35:53,254 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:35:53,255 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:35:53,255 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-09 10:35:53,255 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039401302] [2020-10-09 10:35:53,256 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-09 10:35:53,256 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:35:53,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-09 10:35:53,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-09 10:35:53,256 INFO L87 Difference]: Start difference. First operand 125 states and 308 transitions. Second operand 13 states. [2020-10-09 10:35:53,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:35:53,559 INFO L93 Difference]: Finished difference Result 177 states and 424 transitions. [2020-10-09 10:35:53,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-09 10:35:53,560 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-09 10:35:53,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:35:53,562 INFO L225 Difference]: With dead ends: 177 [2020-10-09 10:35:53,562 INFO L226 Difference]: Without dead ends: 172 [2020-10-09 10:35:53,562 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=216, Invalid=434, Unknown=0, NotChecked=0, Total=650 [2020-10-09 10:35:53,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2020-10-09 10:35:53,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 126. [2020-10-09 10:35:53,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2020-10-09 10:35:53,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 313 transitions. [2020-10-09 10:35:53,566 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 313 transitions. Word has length 12 [2020-10-09 10:35:53,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:35:53,566 INFO L481 AbstractCegarLoop]: Abstraction has 126 states and 313 transitions. [2020-10-09 10:35:53,566 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-09 10:35:53,566 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 313 transitions. [2020-10-09 10:35:53,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-09 10:35:53,567 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:35:53,567 INFO L421 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:35:53,775 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2020-10-09 10:35:53,776 INFO L429 AbstractCegarLoop]: === Iteration 57 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:35:53,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:35:53,776 INFO L82 PathProgramCache]: Analyzing trace with hash 2100677807, now seen corresponding path program 38 times [2020-10-09 10:35:53,776 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:35:53,777 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469488742] [2020-10-09 10:35:53,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:35:53,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:35:53,828 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:35:53,829 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469488742] [2020-10-09 10:35:53,829 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1892487391] [2020-10-09 10:35:53,829 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:35:53,873 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-09 10:35:53,873 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:35:53,874 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-09 10:35:53,874 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:35:53,940 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-09 10:35:53,947 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:35:53,947 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:35:53,947 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-09 10:35:53,948 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237214522] [2020-10-09 10:35:53,948 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-09 10:35:53,948 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:35:53,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-09 10:35:53,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-09 10:35:53,949 INFO L87 Difference]: Start difference. First operand 126 states and 313 transitions. Second operand 13 states. [2020-10-09 10:35:54,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:35:54,324 INFO L93 Difference]: Finished difference Result 190 states and 454 transitions. [2020-10-09 10:35:54,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-09 10:35:54,325 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-09 10:35:54,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:35:54,327 INFO L225 Difference]: With dead ends: 190 [2020-10-09 10:35:54,327 INFO L226 Difference]: Without dead ends: 182 [2020-10-09 10:35:54,327 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=227, Invalid=475, Unknown=0, NotChecked=0, Total=702 [2020-10-09 10:35:54,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2020-10-09 10:35:54,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 121. [2020-10-09 10:35:54,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-10-09 10:35:54,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 297 transitions. [2020-10-09 10:35:54,331 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 297 transitions. Word has length 12 [2020-10-09 10:35:54,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:35:54,331 INFO L481 AbstractCegarLoop]: Abstraction has 121 states and 297 transitions. [2020-10-09 10:35:54,331 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-09 10:35:54,331 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 297 transitions. [2020-10-09 10:35:54,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-09 10:35:54,332 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:35:54,332 INFO L421 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:35:54,532 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2020-10-09 10:35:54,532 INFO L429 AbstractCegarLoop]: === Iteration 58 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:35:54,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:35:54,533 INFO L82 PathProgramCache]: Analyzing trace with hash 2100706637, now seen corresponding path program 39 times [2020-10-09 10:35:54,533 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:35:54,533 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129289941] [2020-10-09 10:35:54,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:35:54,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:35:54,593 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:35:54,593 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129289941] [2020-10-09 10:35:54,593 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2094400153] [2020-10-09 10:35:54,594 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:35:54,633 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-09 10:35:54,633 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:35:54,634 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-09 10:35:54,634 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:35:54,725 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 10:35:54,737 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:35:54,737 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:35:54,738 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-09 10:35:54,738 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985913834] [2020-10-09 10:35:54,738 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-09 10:35:54,738 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:35:54,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-09 10:35:54,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2020-10-09 10:35:54,738 INFO L87 Difference]: Start difference. First operand 121 states and 297 transitions. Second operand 13 states. [2020-10-09 10:35:55,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:35:55,088 INFO L93 Difference]: Finished difference Result 180 states and 427 transitions. [2020-10-09 10:35:55,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-09 10:35:55,088 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-09 10:35:55,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:35:55,090 INFO L225 Difference]: With dead ends: 180 [2020-10-09 10:35:55,090 INFO L226 Difference]: Without dead ends: 175 [2020-10-09 10:35:55,090 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=195, Invalid=405, Unknown=0, NotChecked=0, Total=600 [2020-10-09 10:35:55,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2020-10-09 10:35:55,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 120. [2020-10-09 10:35:55,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-10-09 10:35:55,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 292 transitions. [2020-10-09 10:35:55,094 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 292 transitions. Word has length 12 [2020-10-09 10:35:55,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:35:55,095 INFO L481 AbstractCegarLoop]: Abstraction has 120 states and 292 transitions. [2020-10-09 10:35:55,095 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-09 10:35:55,095 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 292 transitions. [2020-10-09 10:35:55,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-09 10:35:55,096 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:35:55,096 INFO L421 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:35:55,305 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2020-10-09 10:35:55,306 INFO L429 AbstractCegarLoop]: === Iteration 59 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:35:55,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:35:55,306 INFO L82 PathProgramCache]: Analyzing trace with hash 2107142237, now seen corresponding path program 40 times [2020-10-09 10:35:55,306 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:35:55,307 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529242405] [2020-10-09 10:35:55,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:35:55,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:35:55,371 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:35:55,371 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529242405] [2020-10-09 10:35:55,371 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [496031820] [2020-10-09 10:35:55,372 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:35:55,410 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-09 10:35:55,411 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:35:55,411 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-09 10:35:55,412 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:35:55,501 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:35:55,501 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:35:55,501 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-09 10:35:55,502 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938198378] [2020-10-09 10:35:55,502 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-09 10:35:55,502 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:35:55,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-09 10:35:55,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2020-10-09 10:35:55,503 INFO L87 Difference]: Start difference. First operand 120 states and 292 transitions. Second operand 13 states. [2020-10-09 10:35:55,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:35:55,648 INFO L93 Difference]: Finished difference Result 164 states and 379 transitions. [2020-10-09 10:35:55,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-09 10:35:55,649 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-09 10:35:55,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:35:55,650 INFO L225 Difference]: With dead ends: 164 [2020-10-09 10:35:55,650 INFO L226 Difference]: Without dead ends: 162 [2020-10-09 10:35:55,651 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2020-10-09 10:35:55,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-10-09 10:35:55,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 121. [2020-10-09 10:35:55,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-10-09 10:35:55,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 295 transitions. [2020-10-09 10:35:55,655 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 295 transitions. Word has length 12 [2020-10-09 10:35:55,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:35:55,655 INFO L481 AbstractCegarLoop]: Abstraction has 121 states and 295 transitions. [2020-10-09 10:35:55,655 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-09 10:35:55,656 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 295 transitions. [2020-10-09 10:35:55,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-09 10:35:55,656 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:35:55,656 INFO L421 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:35:55,866 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2020-10-09 10:35:55,867 INFO L429 AbstractCegarLoop]: === Iteration 60 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:35:55,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:35:55,867 INFO L82 PathProgramCache]: Analyzing trace with hash 2107143198, now seen corresponding path program 41 times [2020-10-09 10:35:55,868 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:35:55,868 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483432592] [2020-10-09 10:35:55,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:35:55,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:35:55,928 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:35:55,929 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483432592] [2020-10-09 10:35:55,929 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1780529464] [2020-10-09 10:35:55,929 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:35:55,984 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-09 10:35:55,984 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:35:55,985 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-09 10:35:55,986 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:35:56,100 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:35:56,100 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:35:56,100 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-09 10:35:56,100 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246770347] [2020-10-09 10:35:56,101 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-09 10:35:56,101 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:35:56,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-09 10:35:56,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2020-10-09 10:35:56,101 INFO L87 Difference]: Start difference. First operand 121 states and 295 transitions. Second operand 13 states. [2020-10-09 10:35:56,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:35:56,250 INFO L93 Difference]: Finished difference Result 161 states and 372 transitions. [2020-10-09 10:35:56,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-09 10:35:56,250 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-09 10:35:56,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:35:56,252 INFO L225 Difference]: With dead ends: 161 [2020-10-09 10:35:56,252 INFO L226 Difference]: Without dead ends: 159 [2020-10-09 10:35:56,252 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=101, Invalid=205, Unknown=0, NotChecked=0, Total=306 [2020-10-09 10:35:56,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2020-10-09 10:35:56,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 118. [2020-10-09 10:35:56,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-10-09 10:35:56,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 287 transitions. [2020-10-09 10:35:56,256 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 287 transitions. Word has length 12 [2020-10-09 10:35:56,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:35:56,256 INFO L481 AbstractCegarLoop]: Abstraction has 118 states and 287 transitions. [2020-10-09 10:35:56,257 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-09 10:35:56,257 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 287 transitions. [2020-10-09 10:35:56,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-09 10:35:56,258 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:35:56,258 INFO L421 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:35:56,458 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2020-10-09 10:35:56,459 INFO L429 AbstractCegarLoop]: === Iteration 61 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:35:56,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:35:56,459 INFO L82 PathProgramCache]: Analyzing trace with hash 2127698027, now seen corresponding path program 42 times [2020-10-09 10:35:56,460 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:35:56,460 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500073566] [2020-10-09 10:35:56,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:35:56,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:35:56,510 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:35:56,510 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500073566] [2020-10-09 10:35:56,511 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [780770228] [2020-10-09 10:35:56,511 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:35:56,556 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-09 10:35:56,557 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:35:56,558 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-09 10:35:56,558 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:35:56,654 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:35:56,654 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:35:56,654 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-09 10:35:56,655 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548688140] [2020-10-09 10:35:56,655 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-09 10:35:56,655 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:35:56,656 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-09 10:35:56,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2020-10-09 10:35:56,656 INFO L87 Difference]: Start difference. First operand 118 states and 287 transitions. Second operand 13 states. [2020-10-09 10:35:56,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:35:56,849 INFO L93 Difference]: Finished difference Result 165 states and 380 transitions. [2020-10-09 10:35:56,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-09 10:35:56,850 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-09 10:35:56,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:35:56,851 INFO L225 Difference]: With dead ends: 165 [2020-10-09 10:35:56,851 INFO L226 Difference]: Without dead ends: 163 [2020-10-09 10:35:56,852 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=115, Invalid=265, Unknown=0, NotChecked=0, Total=380 [2020-10-09 10:35:56,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2020-10-09 10:35:56,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 118. [2020-10-09 10:35:56,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-10-09 10:35:56,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 290 transitions. [2020-10-09 10:35:56,855 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 290 transitions. Word has length 12 [2020-10-09 10:35:56,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:35:56,855 INFO L481 AbstractCegarLoop]: Abstraction has 118 states and 290 transitions. [2020-10-09 10:35:56,855 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-09 10:35:56,855 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 290 transitions. [2020-10-09 10:35:56,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-09 10:35:56,856 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:35:56,856 INFO L421 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:35:57,057 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable60 [2020-10-09 10:35:57,058 INFO L429 AbstractCegarLoop]: === Iteration 62 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:35:57,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:35:57,058 INFO L82 PathProgramCache]: Analyzing trace with hash 2127698988, now seen corresponding path program 43 times [2020-10-09 10:35:57,058 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:35:57,059 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509573492] [2020-10-09 10:35:57,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:35:57,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:35:57,117 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:35:57,118 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509573492] [2020-10-09 10:35:57,118 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1759388007] [2020-10-09 10:35:57,118 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:35:57,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:35:57,158 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-09 10:35:57,158 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:35:57,253 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:35:57,253 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:35:57,254 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-09 10:35:57,254 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097217888] [2020-10-09 10:35:57,254 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-09 10:35:57,254 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:35:57,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-09 10:35:57,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2020-10-09 10:35:57,255 INFO L87 Difference]: Start difference. First operand 118 states and 290 transitions. Second operand 13 states. [2020-10-09 10:35:57,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:35:57,459 INFO L93 Difference]: Finished difference Result 167 states and 384 transitions. [2020-10-09 10:35:57,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-09 10:35:57,459 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-09 10:35:57,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:35:57,461 INFO L225 Difference]: With dead ends: 167 [2020-10-09 10:35:57,461 INFO L226 Difference]: Without dead ends: 165 [2020-10-09 10:35:57,461 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=114, Invalid=266, Unknown=0, NotChecked=0, Total=380 [2020-10-09 10:35:57,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2020-10-09 10:35:57,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 118. [2020-10-09 10:35:57,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-10-09 10:35:57,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 289 transitions. [2020-10-09 10:35:57,465 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 289 transitions. Word has length 12 [2020-10-09 10:35:57,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:35:57,466 INFO L481 AbstractCegarLoop]: Abstraction has 118 states and 289 transitions. [2020-10-09 10:35:57,466 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-09 10:35:57,466 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 289 transitions. [2020-10-09 10:35:57,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-09 10:35:57,466 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:35:57,466 INFO L421 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:35:57,676 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,55 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:35:57,677 INFO L429 AbstractCegarLoop]: === Iteration 63 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:35:57,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:35:57,677 INFO L82 PathProgramCache]: Analyzing trace with hash 2128361117, now seen corresponding path program 44 times [2020-10-09 10:35:57,677 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:35:57,678 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6228723] [2020-10-09 10:35:57,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:35:57,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:35:57,732 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:35:57,733 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6228723] [2020-10-09 10:35:57,733 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [472589743] [2020-10-09 10:35:57,733 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:35:57,781 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-09 10:35:57,781 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:35:57,782 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-09 10:35:57,782 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:35:57,887 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:35:57,888 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:35:57,888 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-09 10:35:57,888 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707690499] [2020-10-09 10:35:57,888 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-09 10:35:57,889 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:35:57,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-09 10:35:57,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2020-10-09 10:35:57,889 INFO L87 Difference]: Start difference. First operand 118 states and 289 transitions. Second operand 13 states. [2020-10-09 10:35:58,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:35:58,152 INFO L93 Difference]: Finished difference Result 168 states and 392 transitions. [2020-10-09 10:35:58,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-09 10:35:58,153 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-09 10:35:58,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:35:58,154 INFO L225 Difference]: With dead ends: 168 [2020-10-09 10:35:58,155 INFO L226 Difference]: Without dead ends: 166 [2020-10-09 10:35:58,155 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=157, Invalid=349, Unknown=0, NotChecked=0, Total=506 [2020-10-09 10:35:58,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-10-09 10:35:58,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 120. [2020-10-09 10:35:58,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-10-09 10:35:58,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 296 transitions. [2020-10-09 10:35:58,158 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 296 transitions. Word has length 12 [2020-10-09 10:35:58,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:35:58,158 INFO L481 AbstractCegarLoop]: Abstraction has 120 states and 296 transitions. [2020-10-09 10:35:58,158 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-09 10:35:58,158 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 296 transitions. [2020-10-09 10:35:58,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-09 10:35:58,158 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:35:58,158 INFO L421 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:35:58,359 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,56 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:35:58,359 INFO L429 AbstractCegarLoop]: === Iteration 64 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:35:58,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:35:58,360 INFO L82 PathProgramCache]: Analyzing trace with hash 2128382476, now seen corresponding path program 45 times [2020-10-09 10:35:58,360 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:35:58,361 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766106134] [2020-10-09 10:35:58,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:35:58,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:35:58,417 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:35:58,417 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766106134] [2020-10-09 10:35:58,418 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [32789381] [2020-10-09 10:35:58,418 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:35:58,459 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-09 10:35:58,460 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:35:58,461 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-09 10:35:58,462 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:35:58,526 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 10:35:58,533 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:35:58,533 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:35:58,534 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-09 10:35:58,534 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543815316] [2020-10-09 10:35:58,534 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-09 10:35:58,534 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:35:58,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-09 10:35:58,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-09 10:35:58,535 INFO L87 Difference]: Start difference. First operand 120 states and 296 transitions. Second operand 13 states. [2020-10-09 10:35:58,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:35:58,732 INFO L93 Difference]: Finished difference Result 160 states and 384 transitions. [2020-10-09 10:35:58,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-09 10:35:58,733 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-09 10:35:58,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:35:58,734 INFO L225 Difference]: With dead ends: 160 [2020-10-09 10:35:58,734 INFO L226 Difference]: Without dead ends: 155 [2020-10-09 10:35:58,735 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=142, Invalid=278, Unknown=0, NotChecked=0, Total=420 [2020-10-09 10:35:58,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2020-10-09 10:35:58,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 121. [2020-10-09 10:35:58,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-10-09 10:35:58,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 301 transitions. [2020-10-09 10:35:58,738 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 301 transitions. Word has length 12 [2020-10-09 10:35:58,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:35:58,738 INFO L481 AbstractCegarLoop]: Abstraction has 121 states and 301 transitions. [2020-10-09 10:35:58,738 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-09 10:35:58,738 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 301 transitions. [2020-10-09 10:35:58,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-09 10:35:58,739 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:35:58,739 INFO L421 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:35:58,941 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63,57 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:35:58,942 INFO L429 AbstractCegarLoop]: === Iteration 65 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:35:58,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:35:58,942 INFO L82 PathProgramCache]: Analyzing trace with hash 2128383437, now seen corresponding path program 46 times [2020-10-09 10:35:58,943 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:35:58,943 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817577449] [2020-10-09 10:35:58,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:35:58,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:35:59,001 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:35:59,002 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817577449] [2020-10-09 10:35:59,002 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [523553173] [2020-10-09 10:35:59,002 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:35:59,045 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-09 10:35:59,045 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:35:59,046 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-09 10:35:59,047 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:35:59,162 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-09 10:35:59,205 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:35:59,205 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:35:59,206 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-09 10:35:59,206 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332212408] [2020-10-09 10:35:59,206 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-09 10:35:59,206 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:35:59,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-09 10:35:59,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2020-10-09 10:35:59,207 INFO L87 Difference]: Start difference. First operand 121 states and 301 transitions. Second operand 13 states. [2020-10-09 10:35:59,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:35:59,627 INFO L93 Difference]: Finished difference Result 189 states and 444 transitions. [2020-10-09 10:35:59,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-09 10:35:59,627 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-09 10:35:59,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:35:59,628 INFO L225 Difference]: With dead ends: 189 [2020-10-09 10:35:59,629 INFO L226 Difference]: Without dead ends: 181 [2020-10-09 10:35:59,629 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=195, Invalid=405, Unknown=0, NotChecked=0, Total=600 [2020-10-09 10:35:59,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2020-10-09 10:35:59,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 118. [2020-10-09 10:35:59,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-10-09 10:35:59,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 289 transitions. [2020-10-09 10:35:59,633 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 289 transitions. Word has length 12 [2020-10-09 10:35:59,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:35:59,633 INFO L481 AbstractCegarLoop]: Abstraction has 118 states and 289 transitions. [2020-10-09 10:35:59,633 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-09 10:35:59,633 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 289 transitions. [2020-10-09 10:35:59,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-09 10:35:59,634 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:35:59,634 INFO L421 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:35:59,842 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64,58 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:35:59,842 INFO L429 AbstractCegarLoop]: === Iteration 66 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:35:59,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:35:59,843 INFO L82 PathProgramCache]: Analyzing trace with hash 2128390908, now seen corresponding path program 47 times [2020-10-09 10:35:59,843 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:35:59,843 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480628394] [2020-10-09 10:35:59,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:35:59,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:35:59,900 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:35:59,900 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480628394] [2020-10-09 10:35:59,901 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1437061686] [2020-10-09 10:35:59,901 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:35:59,938 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-09 10:35:59,939 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:35:59,940 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-09 10:35:59,940 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:36:00,017 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:36:00,017 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:36:00,017 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-09 10:36:00,017 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168847556] [2020-10-09 10:36:00,018 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-09 10:36:00,018 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:36:00,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-09 10:36:00,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-10-09 10:36:00,019 INFO L87 Difference]: Start difference. First operand 118 states and 289 transitions. Second operand 13 states. [2020-10-09 10:36:00,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:36:00,264 INFO L93 Difference]: Finished difference Result 169 states and 393 transitions. [2020-10-09 10:36:00,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-09 10:36:00,265 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-09 10:36:00,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:36:00,266 INFO L225 Difference]: With dead ends: 169 [2020-10-09 10:36:00,266 INFO L226 Difference]: Without dead ends: 167 [2020-10-09 10:36:00,267 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=159, Invalid=347, Unknown=0, NotChecked=0, Total=506 [2020-10-09 10:36:00,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2020-10-09 10:36:00,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 120. [2020-10-09 10:36:00,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-10-09 10:36:00,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 296 transitions. [2020-10-09 10:36:00,271 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 296 transitions. Word has length 12 [2020-10-09 10:36:00,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:36:00,271 INFO L481 AbstractCegarLoop]: Abstraction has 120 states and 296 transitions. [2020-10-09 10:36:00,271 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-09 10:36:00,271 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 296 transitions. [2020-10-09 10:36:00,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-09 10:36:00,272 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:36:00,272 INFO L421 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:36:00,482 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable65 [2020-10-09 10:36:00,483 INFO L429 AbstractCegarLoop]: === Iteration 67 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:36:00,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:36:00,483 INFO L82 PathProgramCache]: Analyzing trace with hash 2128412267, now seen corresponding path program 48 times [2020-10-09 10:36:00,483 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:36:00,484 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987673644] [2020-10-09 10:36:00,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:36:00,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:36:00,542 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:36:00,542 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987673644] [2020-10-09 10:36:00,542 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1950988754] [2020-10-09 10:36:00,542 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:36:00,580 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-10-09 10:36:00,580 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:36:00,581 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-09 10:36:00,582 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:36:00,657 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 10:36:00,664 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:36:00,665 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:36:00,665 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-09 10:36:00,665 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926062761] [2020-10-09 10:36:00,665 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-09 10:36:00,665 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:36:00,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-09 10:36:00,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-09 10:36:00,666 INFO L87 Difference]: Start difference. First operand 120 states and 296 transitions. Second operand 13 states. [2020-10-09 10:36:01,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:36:01,028 INFO L93 Difference]: Finished difference Result 192 states and 454 transitions. [2020-10-09 10:36:01,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-09 10:36:01,029 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-09 10:36:01,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:36:01,030 INFO L225 Difference]: With dead ends: 192 [2020-10-09 10:36:01,030 INFO L226 Difference]: Without dead ends: 184 [2020-10-09 10:36:01,031 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=227, Invalid=475, Unknown=0, NotChecked=0, Total=702 [2020-10-09 10:36:01,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2020-10-09 10:36:01,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 119. [2020-10-09 10:36:01,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-10-09 10:36:01,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 287 transitions. [2020-10-09 10:36:01,035 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 287 transitions. Word has length 12 [2020-10-09 10:36:01,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:36:01,035 INFO L481 AbstractCegarLoop]: Abstraction has 119 states and 287 transitions. [2020-10-09 10:36:01,035 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-09 10:36:01,035 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 287 transitions. [2020-10-09 10:36:01,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-09 10:36:01,036 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:36:01,036 INFO L421 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:36:01,238 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66,60 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:36:01,238 INFO L429 AbstractCegarLoop]: === Iteration 68 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:36:01,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:36:01,239 INFO L82 PathProgramCache]: Analyzing trace with hash 2128413228, now seen corresponding path program 49 times [2020-10-09 10:36:01,239 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:36:01,239 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821334856] [2020-10-09 10:36:01,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:36:01,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:36:01,294 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:36:01,294 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821334856] [2020-10-09 10:36:01,294 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1398732947] [2020-10-09 10:36:01,295 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:36:01,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:36:01,332 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-09 10:36:01,333 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:36:01,403 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-09 10:36:01,412 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:36:01,413 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:36:01,413 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-09 10:36:01,413 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279422017] [2020-10-09 10:36:01,414 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-09 10:36:01,414 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:36:01,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-09 10:36:01,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-09 10:36:01,414 INFO L87 Difference]: Start difference. First operand 119 states and 287 transitions. Second operand 13 states. [2020-10-09 10:36:01,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:36:01,746 INFO L93 Difference]: Finished difference Result 180 states and 420 transitions. [2020-10-09 10:36:01,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-09 10:36:01,747 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-09 10:36:01,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:36:01,749 INFO L225 Difference]: With dead ends: 180 [2020-10-09 10:36:01,749 INFO L226 Difference]: Without dead ends: 175 [2020-10-09 10:36:01,750 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=216, Invalid=434, Unknown=0, NotChecked=0, Total=650 [2020-10-09 10:36:01,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2020-10-09 10:36:01,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 114. [2020-10-09 10:36:01,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-10-09 10:36:01,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 268 transitions. [2020-10-09 10:36:01,753 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 268 transitions. Word has length 12 [2020-10-09 10:36:01,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:36:01,753 INFO L481 AbstractCegarLoop]: Abstraction has 114 states and 268 transitions. [2020-10-09 10:36:01,753 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-09 10:36:01,753 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 268 transitions. [2020-10-09 10:36:01,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-09 10:36:01,753 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:36:01,754 INFO L421 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:36:01,954 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 61 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable67 [2020-10-09 10:36:01,954 INFO L429 AbstractCegarLoop]: === Iteration 69 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:36:01,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:36:01,955 INFO L82 PathProgramCache]: Analyzing trace with hash 609848181, now seen corresponding path program 5 times [2020-10-09 10:36:01,955 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:36:01,956 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14866650] [2020-10-09 10:36:01,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:36:01,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:36:02,022 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:36:02,022 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14866650] [2020-10-09 10:36:02,022 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [306831294] [2020-10-09 10:36:02,023 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:36:02,063 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-09 10:36:02,063 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:36:02,064 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-09 10:36:02,064 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:36:02,167 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 10:36:02,191 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:36:02,191 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:36:02,191 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-09 10:36:02,192 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330143729] [2020-10-09 10:36:02,192 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-09 10:36:02,192 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:36:02,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-09 10:36:02,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2020-10-09 10:36:02,193 INFO L87 Difference]: Start difference. First operand 114 states and 268 transitions. Second operand 16 states. [2020-10-09 10:36:02,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:36:02,342 INFO L93 Difference]: Finished difference Result 164 states and 382 transitions. [2020-10-09 10:36:02,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-09 10:36:02,342 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 12 [2020-10-09 10:36:02,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:36:02,344 INFO L225 Difference]: With dead ends: 164 [2020-10-09 10:36:02,344 INFO L226 Difference]: Without dead ends: 159 [2020-10-09 10:36:02,344 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=147, Invalid=315, Unknown=0, NotChecked=0, Total=462 [2020-10-09 10:36:02,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2020-10-09 10:36:02,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 122. [2020-10-09 10:36:02,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-10-09 10:36:02,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 299 transitions. [2020-10-09 10:36:02,347 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 299 transitions. Word has length 12 [2020-10-09 10:36:02,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:36:02,348 INFO L481 AbstractCegarLoop]: Abstraction has 122 states and 299 transitions. [2020-10-09 10:36:02,348 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-09 10:36:02,348 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 299 transitions. [2020-10-09 10:36:02,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-09 10:36:02,348 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:36:02,348 INFO L421 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:36:02,558 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68,62 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:36:02,559 INFO L429 AbstractCegarLoop]: === Iteration 70 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:36:02,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:36:02,559 INFO L82 PathProgramCache]: Analyzing trace with hash -1447872776, now seen corresponding path program 15 times [2020-10-09 10:36:02,559 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:36:02,560 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674410832] [2020-10-09 10:36:02,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:36:02,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:36:02,678 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:36:02,678 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674410832] [2020-10-09 10:36:02,678 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1409733756] [2020-10-09 10:36:02,678 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:36:02,715 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-09 10:36:02,715 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:36:02,715 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-09 10:36:02,716 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:36:02,838 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:36:02,839 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:36:02,839 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-09 10:36:02,839 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752244593] [2020-10-09 10:36:02,840 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-09 10:36:02,840 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:36:02,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-09 10:36:02,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2020-10-09 10:36:02,840 INFO L87 Difference]: Start difference. First operand 122 states and 299 transitions. Second operand 15 states. [2020-10-09 10:36:02,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:36:02,891 INFO L93 Difference]: Finished difference Result 156 states and 367 transitions. [2020-10-09 10:36:02,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-09 10:36:02,891 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 12 [2020-10-09 10:36:02,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:36:02,893 INFO L225 Difference]: With dead ends: 156 [2020-10-09 10:36:02,893 INFO L226 Difference]: Without dead ends: 153 [2020-10-09 10:36:02,893 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2020-10-09 10:36:02,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2020-10-09 10:36:02,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 129. [2020-10-09 10:36:02,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2020-10-09 10:36:02,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 315 transitions. [2020-10-09 10:36:02,897 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 315 transitions. Word has length 12 [2020-10-09 10:36:02,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:36:02,897 INFO L481 AbstractCegarLoop]: Abstraction has 129 states and 315 transitions. [2020-10-09 10:36:02,897 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-09 10:36:02,897 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 315 transitions. [2020-10-09 10:36:02,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-09 10:36:02,898 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:36:02,898 INFO L421 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:36:03,105 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable69 [2020-10-09 10:36:03,106 INFO L429 AbstractCegarLoop]: === Iteration 71 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:36:03,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:36:03,106 INFO L82 PathProgramCache]: Analyzing trace with hash 1985246760, now seen corresponding path program 16 times [2020-10-09 10:36:03,106 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:36:03,107 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860322393] [2020-10-09 10:36:03,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:36:03,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:36:03,219 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:36:03,220 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860322393] [2020-10-09 10:36:03,220 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2023099415] [2020-10-09 10:36:03,220 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:36:03,269 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-09 10:36:03,269 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:36:03,270 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-09 10:36:03,270 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:36:03,389 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:36:03,390 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:36:03,390 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-09 10:36:03,390 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205641453] [2020-10-09 10:36:03,391 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-09 10:36:03,391 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:36:03,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-09 10:36:03,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2020-10-09 10:36:03,391 INFO L87 Difference]: Start difference. First operand 129 states and 315 transitions. Second operand 15 states. [2020-10-09 10:36:03,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:36:03,452 INFO L93 Difference]: Finished difference Result 170 states and 394 transitions. [2020-10-09 10:36:03,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-09 10:36:03,452 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 12 [2020-10-09 10:36:03,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:36:03,454 INFO L225 Difference]: With dead ends: 170 [2020-10-09 10:36:03,454 INFO L226 Difference]: Without dead ends: 167 [2020-10-09 10:36:03,454 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=167, Unknown=0, NotChecked=0, Total=240 [2020-10-09 10:36:03,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2020-10-09 10:36:03,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 129. [2020-10-09 10:36:03,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2020-10-09 10:36:03,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 315 transitions. [2020-10-09 10:36:03,458 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 315 transitions. Word has length 12 [2020-10-09 10:36:03,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:36:03,458 INFO L481 AbstractCegarLoop]: Abstraction has 129 states and 315 transitions. [2020-10-09 10:36:03,458 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-09 10:36:03,458 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 315 transitions. [2020-10-09 10:36:03,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-09 10:36:03,459 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:36:03,459 INFO L421 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:36:03,659 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,64 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:36:03,660 INFO L429 AbstractCegarLoop]: === Iteration 72 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:36:03,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:36:03,660 INFO L82 PathProgramCache]: Analyzing trace with hash -1644785416, now seen corresponding path program 17 times [2020-10-09 10:36:03,660 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:36:03,660 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938607264] [2020-10-09 10:36:03,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:36:03,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:36:03,748 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:36:03,748 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938607264] [2020-10-09 10:36:03,748 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [764218755] [2020-10-09 10:36:03,749 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:36:03,785 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-09 10:36:03,786 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:36:03,786 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-09 10:36:03,787 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:36:03,902 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:36:03,902 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:36:03,903 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-09 10:36:03,903 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134168927] [2020-10-09 10:36:03,903 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-09 10:36:03,903 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:36:03,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-09 10:36:03,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2020-10-09 10:36:03,904 INFO L87 Difference]: Start difference. First operand 129 states and 315 transitions. Second operand 15 states. [2020-10-09 10:36:03,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:36:03,993 INFO L93 Difference]: Finished difference Result 169 states and 394 transitions. [2020-10-09 10:36:03,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-09 10:36:03,994 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 12 [2020-10-09 10:36:03,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:36:03,995 INFO L225 Difference]: With dead ends: 169 [2020-10-09 10:36:03,995 INFO L226 Difference]: Without dead ends: 166 [2020-10-09 10:36:03,996 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=83, Invalid=189, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:36:03,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-10-09 10:36:03,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 130. [2020-10-09 10:36:03,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-10-09 10:36:04,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 320 transitions. [2020-10-09 10:36:04,000 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 320 transitions. Word has length 12 [2020-10-09 10:36:04,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:36:04,000 INFO L481 AbstractCegarLoop]: Abstraction has 130 states and 320 transitions. [2020-10-09 10:36:04,000 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-09 10:36:04,000 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 320 transitions. [2020-10-09 10:36:04,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-09 10:36:04,001 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:36:04,001 INFO L421 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:36:04,205 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71,65 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:36:04,206 INFO L429 AbstractCegarLoop]: === Iteration 73 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:36:04,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:36:04,206 INFO L82 PathProgramCache]: Analyzing trace with hash -1623335896, now seen corresponding path program 18 times [2020-10-09 10:36:04,207 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:36:04,207 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588109979] [2020-10-09 10:36:04,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:36:04,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:36:04,312 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:36:04,313 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588109979] [2020-10-09 10:36:04,313 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1711208522] [2020-10-09 10:36:04,313 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 66 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 66 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:36:04,351 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-09 10:36:04,351 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:36:04,352 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-09 10:36:04,353 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:36:04,470 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:36:04,470 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:36:04,470 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-09 10:36:04,470 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437147859] [2020-10-09 10:36:04,470 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-09 10:36:04,471 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:36:04,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-09 10:36:04,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2020-10-09 10:36:04,471 INFO L87 Difference]: Start difference. First operand 130 states and 320 transitions. Second operand 15 states. [2020-10-09 10:36:04,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:36:04,577 INFO L93 Difference]: Finished difference Result 168 states and 394 transitions. [2020-10-09 10:36:04,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-09 10:36:04,578 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 12 [2020-10-09 10:36:04,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:36:04,579 INFO L225 Difference]: With dead ends: 168 [2020-10-09 10:36:04,580 INFO L226 Difference]: Without dead ends: 165 [2020-10-09 10:36:04,580 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=96, Invalid=210, Unknown=0, NotChecked=0, Total=306 [2020-10-09 10:36:04,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2020-10-09 10:36:04,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 132. [2020-10-09 10:36:04,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-10-09 10:36:04,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 327 transitions. [2020-10-09 10:36:04,583 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 327 transitions. Word has length 12 [2020-10-09 10:36:04,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:36:04,584 INFO L481 AbstractCegarLoop]: Abstraction has 132 states and 327 transitions. [2020-10-09 10:36:04,584 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-09 10:36:04,584 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 327 transitions. [2020-10-09 10:36:04,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-09 10:36:04,584 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:36:04,584 INFO L421 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:36:04,794 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable72 [2020-10-09 10:36:04,795 INFO L429 AbstractCegarLoop]: === Iteration 74 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:36:04,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:36:04,795 INFO L82 PathProgramCache]: Analyzing trace with hash -1622643976, now seen corresponding path program 19 times [2020-10-09 10:36:04,795 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:36:04,796 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986480021] [2020-10-09 10:36:04,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:36:04,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:36:04,881 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:36:04,881 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986480021] [2020-10-09 10:36:04,881 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1731574665] [2020-10-09 10:36:04,882 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 67 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 67 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:36:04,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:36:04,920 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-09 10:36:04,921 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:36:05,027 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:36:05,027 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:36:05,028 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-09 10:36:05,028 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898993173] [2020-10-09 10:36:05,028 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-09 10:36:05,028 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:36:05,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-09 10:36:05,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2020-10-09 10:36:05,029 INFO L87 Difference]: Start difference. First operand 132 states and 327 transitions. Second operand 15 states. [2020-10-09 10:36:05,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:36:05,165 INFO L93 Difference]: Finished difference Result 167 states and 394 transitions. [2020-10-09 10:36:05,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-09 10:36:05,166 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 12 [2020-10-09 10:36:05,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:36:05,168 INFO L225 Difference]: With dead ends: 167 [2020-10-09 10:36:05,168 INFO L226 Difference]: Without dead ends: 164 [2020-10-09 10:36:05,168 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=112, Invalid=230, Unknown=0, NotChecked=0, Total=342 [2020-10-09 10:36:05,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2020-10-09 10:36:05,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 134. [2020-10-09 10:36:05,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-10-09 10:36:05,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 334 transitions. [2020-10-09 10:36:05,172 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 334 transitions. Word has length 12 [2020-10-09 10:36:05,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:36:05,172 INFO L481 AbstractCegarLoop]: Abstraction has 134 states and 334 transitions. [2020-10-09 10:36:05,172 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-09 10:36:05,172 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 334 transitions. [2020-10-09 10:36:05,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-09 10:36:05,173 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:36:05,173 INFO L421 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:36:05,373 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73,67 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:36:05,374 INFO L429 AbstractCegarLoop]: === Iteration 75 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:36:05,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:36:05,374 INFO L82 PathProgramCache]: Analyzing trace with hash -1622621656, now seen corresponding path program 20 times [2020-10-09 10:36:05,374 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:36:05,375 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344839357] [2020-10-09 10:36:05,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:36:05,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:36:05,442 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:36:05,442 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344839357] [2020-10-09 10:36:05,443 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1721079950] [2020-10-09 10:36:05,443 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 68 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 68 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:36:05,480 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-09 10:36:05,480 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:36:05,481 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-09 10:36:05,482 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:36:05,582 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-09 10:36:05,601 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:36:05,601 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:36:05,601 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-09 10:36:05,601 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843845328] [2020-10-09 10:36:05,601 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-09 10:36:05,602 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:36:05,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-09 10:36:05,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2020-10-09 10:36:05,602 INFO L87 Difference]: Start difference. First operand 134 states and 334 transitions. Second operand 15 states. [2020-10-09 10:36:05,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:36:05,823 INFO L93 Difference]: Finished difference Result 176 states and 418 transitions. [2020-10-09 10:36:05,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-09 10:36:05,824 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 12 [2020-10-09 10:36:05,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:36:05,826 INFO L225 Difference]: With dead ends: 176 [2020-10-09 10:36:05,826 INFO L226 Difference]: Without dead ends: 170 [2020-10-09 10:36:05,826 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=138, Invalid=282, Unknown=0, NotChecked=0, Total=420 [2020-10-09 10:36:05,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2020-10-09 10:36:05,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 132. [2020-10-09 10:36:05,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-10-09 10:36:05,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 332 transitions. [2020-10-09 10:36:05,831 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 332 transitions. Word has length 12 [2020-10-09 10:36:05,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:36:05,831 INFO L481 AbstractCegarLoop]: Abstraction has 132 states and 332 transitions. [2020-10-09 10:36:05,831 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-09 10:36:05,832 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 332 transitions. [2020-10-09 10:36:05,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-09 10:36:05,832 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:36:05,833 INFO L421 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:36:06,044 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74,68 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:36:06,044 INFO L429 AbstractCegarLoop]: === Iteration 76 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:36:06,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:36:06,045 INFO L82 PathProgramCache]: Analyzing trace with hash 1730118241, now seen corresponding path program 50 times [2020-10-09 10:36:06,045 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:36:06,045 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438847371] [2020-10-09 10:36:06,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:36:06,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:36:06,188 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:36:06,189 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438847371] [2020-10-09 10:36:06,189 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1361938897] [2020-10-09 10:36:06,189 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 69 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 69 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:36:06,250 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-09 10:36:06,251 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:36:06,252 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-09 10:36:06,253 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:36:06,425 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:36:06,426 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:36:06,426 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-09 10:36:06,426 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420460031] [2020-10-09 10:36:06,426 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-09 10:36:06,427 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:36:06,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-09 10:36:06,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2020-10-09 10:36:06,428 INFO L87 Difference]: Start difference. First operand 132 states and 332 transitions. Second operand 15 states. [2020-10-09 10:36:06,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:36:06,497 INFO L93 Difference]: Finished difference Result 163 states and 394 transitions. [2020-10-09 10:36:06,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-09 10:36:06,498 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-09 10:36:06,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:36:06,499 INFO L225 Difference]: With dead ends: 163 [2020-10-09 10:36:06,500 INFO L226 Difference]: Without dead ends: 161 [2020-10-09 10:36:06,500 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2020-10-09 10:36:06,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2020-10-09 10:36:06,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 138. [2020-10-09 10:36:06,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-10-09 10:36:06,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 350 transitions. [2020-10-09 10:36:06,505 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 350 transitions. Word has length 13 [2020-10-09 10:36:06,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:36:06,505 INFO L481 AbstractCegarLoop]: Abstraction has 138 states and 350 transitions. [2020-10-09 10:36:06,506 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-09 10:36:06,506 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 350 transitions. [2020-10-09 10:36:06,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-09 10:36:06,507 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:36:06,507 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:36:06,719 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable75 [2020-10-09 10:36:06,719 INFO L429 AbstractCegarLoop]: === Iteration 77 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:36:06,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:36:06,720 INFO L82 PathProgramCache]: Analyzing trace with hash 1730119202, now seen corresponding path program 51 times [2020-10-09 10:36:06,720 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:36:06,720 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662665] [2020-10-09 10:36:06,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:36:06,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:36:06,831 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:36:06,831 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662665] [2020-10-09 10:36:06,831 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [43757524] [2020-10-09 10:36:06,831 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 70 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 70 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:36:06,873 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-09 10:36:06,874 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:36:06,875 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-09 10:36:06,875 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:36:06,992 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:36:06,993 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:36:06,993 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-09 10:36:06,993 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645427339] [2020-10-09 10:36:06,993 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-09 10:36:06,994 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:36:06,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-09 10:36:06,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2020-10-09 10:36:06,994 INFO L87 Difference]: Start difference. First operand 138 states and 350 transitions. Second operand 15 states. [2020-10-09 10:36:07,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:36:07,137 INFO L93 Difference]: Finished difference Result 172 states and 412 transitions. [2020-10-09 10:36:07,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-09 10:36:07,137 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-09 10:36:07,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:36:07,139 INFO L225 Difference]: With dead ends: 172 [2020-10-09 10:36:07,139 INFO L226 Difference]: Without dead ends: 170 [2020-10-09 10:36:07,139 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=115, Invalid=227, Unknown=0, NotChecked=0, Total=342 [2020-10-09 10:36:07,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2020-10-09 10:36:07,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 136. [2020-10-09 10:36:07,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-10-09 10:36:07,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 344 transitions. [2020-10-09 10:36:07,143 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 344 transitions. Word has length 13 [2020-10-09 10:36:07,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:36:07,144 INFO L481 AbstractCegarLoop]: Abstraction has 136 states and 344 transitions. [2020-10-09 10:36:07,144 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-09 10:36:07,144 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 344 transitions. [2020-10-09 10:36:07,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-09 10:36:07,144 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:36:07,145 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:36:07,353 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76,70 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:36:07,354 INFO L429 AbstractCegarLoop]: === Iteration 78 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:36:07,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:36:07,354 INFO L82 PathProgramCache]: Analyzing trace with hash 1730148032, now seen corresponding path program 52 times [2020-10-09 10:36:07,355 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:36:07,355 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308657068] [2020-10-09 10:36:07,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:36:07,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:36:07,433 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:36:07,434 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308657068] [2020-10-09 10:36:07,434 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [640727494] [2020-10-09 10:36:07,434 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 71 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 71 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:36:07,486 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-09 10:36:07,486 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:36:07,487 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-09 10:36:07,488 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:36:08,200 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:36:08,201 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:36:08,201 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-09 10:36:08,201 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356154244] [2020-10-09 10:36:08,201 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-09 10:36:08,201 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:36:08,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-09 10:36:08,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2020-10-09 10:36:08,202 INFO L87 Difference]: Start difference. First operand 136 states and 344 transitions. Second operand 15 states. [2020-10-09 10:36:08,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:36:08,395 INFO L93 Difference]: Finished difference Result 179 states and 426 transitions. [2020-10-09 10:36:08,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-09 10:36:08,396 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-09 10:36:08,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:36:08,397 INFO L225 Difference]: With dead ends: 179 [2020-10-09 10:36:08,397 INFO L226 Difference]: Without dead ends: 177 [2020-10-09 10:36:08,398 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=132, Invalid=248, Unknown=0, NotChecked=0, Total=380 [2020-10-09 10:36:08,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2020-10-09 10:36:08,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 134. [2020-10-09 10:36:08,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-10-09 10:36:08,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 338 transitions. [2020-10-09 10:36:08,401 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 338 transitions. Word has length 13 [2020-10-09 10:36:08,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:36:08,401 INFO L481 AbstractCegarLoop]: Abstraction has 134 states and 338 transitions. [2020-10-09 10:36:08,401 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-09 10:36:08,401 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 338 transitions. [2020-10-09 10:36:08,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-09 10:36:08,402 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:36:08,402 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:36:08,602 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 71 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable77 [2020-10-09 10:36:08,603 INFO L429 AbstractCegarLoop]: === Iteration 79 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:36:08,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:36:08,603 INFO L82 PathProgramCache]: Analyzing trace with hash 1731041762, now seen corresponding path program 53 times [2020-10-09 10:36:08,603 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:36:08,604 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659091748] [2020-10-09 10:36:08,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:36:08,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:36:08,686 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:36:08,687 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659091748] [2020-10-09 10:36:08,687 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1632396501] [2020-10-09 10:36:08,687 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 72 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 72 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:36:08,729 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-09 10:36:08,729 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:36:08,729 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-09 10:36:08,730 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:36:08,847 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:36:08,847 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:36:08,848 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-09 10:36:08,848 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830474028] [2020-10-09 10:36:08,848 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-09 10:36:08,848 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:36:08,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-09 10:36:08,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2020-10-09 10:36:08,849 INFO L87 Difference]: Start difference. First operand 134 states and 338 transitions. Second operand 15 states. [2020-10-09 10:36:09,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:36:09,038 INFO L93 Difference]: Finished difference Result 179 states and 426 transitions. [2020-10-09 10:36:09,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-09 10:36:09,038 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-09 10:36:09,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:36:09,040 INFO L225 Difference]: With dead ends: 179 [2020-10-09 10:36:09,040 INFO L226 Difference]: Without dead ends: 177 [2020-10-09 10:36:09,040 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=141, Invalid=279, Unknown=0, NotChecked=0, Total=420 [2020-10-09 10:36:09,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2020-10-09 10:36:09,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 136. [2020-10-09 10:36:09,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-10-09 10:36:09,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 344 transitions. [2020-10-09 10:36:09,044 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 344 transitions. Word has length 13 [2020-10-09 10:36:09,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:36:09,044 INFO L481 AbstractCegarLoop]: Abstraction has 136 states and 344 transitions. [2020-10-09 10:36:09,044 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-09 10:36:09,045 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 344 transitions. [2020-10-09 10:36:09,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-09 10:36:09,045 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:36:09,045 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:36:09,255 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 72 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable78 [2020-10-09 10:36:09,256 INFO L429 AbstractCegarLoop]: === Iteration 80 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:36:09,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:36:09,256 INFO L82 PathProgramCache]: Analyzing trace with hash 1731042723, now seen corresponding path program 54 times [2020-10-09 10:36:09,256 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:36:09,257 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601539531] [2020-10-09 10:36:09,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:36:09,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:36:09,338 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:36:09,338 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601539531] [2020-10-09 10:36:09,338 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1076473638] [2020-10-09 10:36:09,339 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 73 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 73 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:36:09,377 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-10-09 10:36:09,377 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:36:09,377 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-09 10:36:09,378 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:36:09,481 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:36:09,482 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:36:09,482 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-09 10:36:09,482 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457158689] [2020-10-09 10:36:09,482 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-09 10:36:09,482 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:36:09,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-09 10:36:09,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2020-10-09 10:36:09,483 INFO L87 Difference]: Start difference. First operand 136 states and 344 transitions. Second operand 15 states. [2020-10-09 10:36:09,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:36:09,692 INFO L93 Difference]: Finished difference Result 184 states and 436 transitions. [2020-10-09 10:36:09,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-09 10:36:09,692 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-09 10:36:09,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:36:09,694 INFO L225 Difference]: With dead ends: 184 [2020-10-09 10:36:09,694 INFO L226 Difference]: Without dead ends: 182 [2020-10-09 10:36:09,694 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=142, Invalid=278, Unknown=0, NotChecked=0, Total=420 [2020-10-09 10:36:09,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2020-10-09 10:36:09,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 136. [2020-10-09 10:36:09,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-10-09 10:36:09,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 342 transitions. [2020-10-09 10:36:09,697 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 342 transitions. Word has length 13 [2020-10-09 10:36:09,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:36:09,698 INFO L481 AbstractCegarLoop]: Abstraction has 136 states and 342 transitions. [2020-10-09 10:36:09,698 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-09 10:36:09,698 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 342 transitions. [2020-10-09 10:36:09,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-09 10:36:09,698 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:36:09,698 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:36:09,905 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 73 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable79 [2020-10-09 10:36:09,905 INFO L429 AbstractCegarLoop]: === Iteration 81 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:36:09,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:36:09,906 INFO L82 PathProgramCache]: Analyzing trace with hash 1731071553, now seen corresponding path program 55 times [2020-10-09 10:36:09,906 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:36:09,906 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532357716] [2020-10-09 10:36:09,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:36:09,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:36:09,987 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:36:09,988 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532357716] [2020-10-09 10:36:09,988 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1511646357] [2020-10-09 10:36:09,988 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 74 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 74 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:36:10,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:36:10,026 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-09 10:36:10,027 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:36:10,141 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:36:10,142 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:36:10,142 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-09 10:36:10,142 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853412491] [2020-10-09 10:36:10,143 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-09 10:36:10,143 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:36:10,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-09 10:36:10,143 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2020-10-09 10:36:10,143 INFO L87 Difference]: Start difference. First operand 136 states and 342 transitions. Second operand 15 states. [2020-10-09 10:36:10,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:36:10,381 INFO L93 Difference]: Finished difference Result 179 states and 427 transitions. [2020-10-09 10:36:10,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-09 10:36:10,381 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-09 10:36:10,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:36:10,383 INFO L225 Difference]: With dead ends: 179 [2020-10-09 10:36:10,383 INFO L226 Difference]: Without dead ends: 177 [2020-10-09 10:36:10,383 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=143, Invalid=277, Unknown=0, NotChecked=0, Total=420 [2020-10-09 10:36:10,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2020-10-09 10:36:10,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 135. [2020-10-09 10:36:10,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2020-10-09 10:36:10,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 339 transitions. [2020-10-09 10:36:10,387 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 339 transitions. Word has length 13 [2020-10-09 10:36:10,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:36:10,387 INFO L481 AbstractCegarLoop]: Abstraction has 135 states and 339 transitions. [2020-10-09 10:36:10,387 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-09 10:36:10,387 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 339 transitions. [2020-10-09 10:36:10,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-09 10:36:10,388 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:36:10,388 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:36:10,594 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,74 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:36:10,594 INFO L429 AbstractCegarLoop]: === Iteration 82 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:36:10,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:36:10,595 INFO L82 PathProgramCache]: Analyzing trace with hash 1758747392, now seen corresponding path program 56 times [2020-10-09 10:36:10,595 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:36:10,595 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501644997] [2020-10-09 10:36:10,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:36:10,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:36:10,683 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:36:10,683 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501644997] [2020-10-09 10:36:10,684 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1273785177] [2020-10-09 10:36:10,684 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 75 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 75 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:36:10,721 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-09 10:36:10,721 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:36:10,722 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-09 10:36:10,723 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:36:10,836 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:36:10,837 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:36:10,837 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-09 10:36:10,837 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157020256] [2020-10-09 10:36:10,837 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-09 10:36:10,838 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:36:10,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-09 10:36:10,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2020-10-09 10:36:10,838 INFO L87 Difference]: Start difference. First operand 135 states and 339 transitions. Second operand 15 states. [2020-10-09 10:36:11,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:36:11,003 INFO L93 Difference]: Finished difference Result 176 states and 421 transitions. [2020-10-09 10:36:11,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-09 10:36:11,004 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-09 10:36:11,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:36:11,005 INFO L225 Difference]: With dead ends: 176 [2020-10-09 10:36:11,006 INFO L226 Difference]: Without dead ends: 174 [2020-10-09 10:36:11,006 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=125, Invalid=255, Unknown=0, NotChecked=0, Total=380 [2020-10-09 10:36:11,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2020-10-09 10:36:11,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 139. [2020-10-09 10:36:11,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2020-10-09 10:36:11,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 350 transitions. [2020-10-09 10:36:11,009 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 350 transitions. Word has length 13 [2020-10-09 10:36:11,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:36:11,009 INFO L481 AbstractCegarLoop]: Abstraction has 139 states and 350 transitions. [2020-10-09 10:36:11,009 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-09 10:36:11,010 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 350 transitions. [2020-10-09 10:36:11,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-09 10:36:11,010 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:36:11,010 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:36:11,210 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81,75 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:36:11,211 INFO L429 AbstractCegarLoop]: === Iteration 83 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:36:11,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:36:11,211 INFO L82 PathProgramCache]: Analyzing trace with hash 1758748353, now seen corresponding path program 57 times [2020-10-09 10:36:11,211 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:36:11,212 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370886760] [2020-10-09 10:36:11,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:36:11,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:36:11,299 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:36:11,300 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370886760] [2020-10-09 10:36:11,303 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2070996818] [2020-10-09 10:36:11,303 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 76 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 76 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:36:11,353 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-09 10:36:11,353 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:36:11,354 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-09 10:36:11,355 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:36:11,476 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:36:11,477 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:36:11,477 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-09 10:36:11,477 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821019376] [2020-10-09 10:36:11,478 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-09 10:36:11,478 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:36:11,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-09 10:36:11,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2020-10-09 10:36:11,478 INFO L87 Difference]: Start difference. First operand 139 states and 350 transitions. Second operand 15 states. [2020-10-09 10:36:11,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:36:11,685 INFO L93 Difference]: Finished difference Result 185 states and 439 transitions. [2020-10-09 10:36:11,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-09 10:36:11,686 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-09 10:36:11,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:36:11,687 INFO L225 Difference]: With dead ends: 185 [2020-10-09 10:36:11,687 INFO L226 Difference]: Without dead ends: 183 [2020-10-09 10:36:11,688 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=143, Invalid=277, Unknown=0, NotChecked=0, Total=420 [2020-10-09 10:36:11,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2020-10-09 10:36:11,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 140. [2020-10-09 10:36:11,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-10-09 10:36:11,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 352 transitions. [2020-10-09 10:36:11,691 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 352 transitions. Word has length 13 [2020-10-09 10:36:11,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:36:11,692 INFO L481 AbstractCegarLoop]: Abstraction has 140 states and 352 transitions. [2020-10-09 10:36:11,692 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-09 10:36:11,692 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 352 transitions. [2020-10-09 10:36:11,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-09 10:36:11,692 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:36:11,692 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:36:11,893 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82,76 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:36:11,893 INFO L429 AbstractCegarLoop]: === Iteration 84 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:36:11,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:36:11,894 INFO L82 PathProgramCache]: Analyzing trace with hash 1758777183, now seen corresponding path program 58 times [2020-10-09 10:36:11,894 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:36:11,895 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475419418] [2020-10-09 10:36:11,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:36:11,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:36:12,002 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:36:12,002 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475419418] [2020-10-09 10:36:12,002 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1294384001] [2020-10-09 10:36:12,003 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 77 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 77 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:36:12,050 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-09 10:36:12,050 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:36:12,051 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-09 10:36:12,051 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:36:12,157 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:36:12,158 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:36:12,158 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-09 10:36:12,158 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492931036] [2020-10-09 10:36:12,158 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-09 10:36:12,158 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:36:12,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-09 10:36:12,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2020-10-09 10:36:12,159 INFO L87 Difference]: Start difference. First operand 140 states and 352 transitions. Second operand 15 states. [2020-10-09 10:36:12,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:36:12,377 INFO L93 Difference]: Finished difference Result 185 states and 439 transitions. [2020-10-09 10:36:12,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-09 10:36:12,377 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-09 10:36:12,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:36:12,379 INFO L225 Difference]: With dead ends: 185 [2020-10-09 10:36:12,379 INFO L226 Difference]: Without dead ends: 183 [2020-10-09 10:36:12,379 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=142, Invalid=278, Unknown=0, NotChecked=0, Total=420 [2020-10-09 10:36:12,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2020-10-09 10:36:12,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 138. [2020-10-09 10:36:12,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-10-09 10:36:12,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 345 transitions. [2020-10-09 10:36:12,383 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 345 transitions. Word has length 13 [2020-10-09 10:36:12,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:36:12,383 INFO L481 AbstractCegarLoop]: Abstraction has 138 states and 345 transitions. [2020-10-09 10:36:12,383 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-09 10:36:12,383 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 345 transitions. [2020-10-09 10:36:12,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-09 10:36:12,384 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:36:12,384 INFO L421 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:36:12,593 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83,77 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:36:12,593 INFO L429 AbstractCegarLoop]: === Iteration 85 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:36:12,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:36:12,594 INFO L82 PathProgramCache]: Analyzing trace with hash 9395951, now seen corresponding path program 59 times [2020-10-09 10:36:12,594 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:36:12,595 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042146169] [2020-10-09 10:36:12,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:36:12,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:36:12,710 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:36:12,710 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042146169] [2020-10-09 10:36:12,710 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1614361000] [2020-10-09 10:36:12,710 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 78 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 78 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:36:12,749 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-09 10:36:12,749 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:36:12,750 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-09 10:36:12,750 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:36:12,872 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:36:12,872 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:36:12,873 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-09 10:36:12,873 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314478023] [2020-10-09 10:36:12,873 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-09 10:36:12,873 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:36:12,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-09 10:36:12,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2020-10-09 10:36:12,874 INFO L87 Difference]: Start difference. First operand 138 states and 345 transitions. Second operand 15 states. [2020-10-09 10:36:12,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:36:12,940 INFO L93 Difference]: Finished difference Result 182 states and 432 transitions. [2020-10-09 10:36:12,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-09 10:36:12,941 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-09 10:36:12,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:36:12,942 INFO L225 Difference]: With dead ends: 182 [2020-10-09 10:36:12,942 INFO L226 Difference]: Without dead ends: 180 [2020-10-09 10:36:12,943 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=167, Unknown=0, NotChecked=0, Total=240 [2020-10-09 10:36:12,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2020-10-09 10:36:12,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 144. [2020-10-09 10:36:12,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-10-09 10:36:12,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 363 transitions. [2020-10-09 10:36:12,947 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 363 transitions. Word has length 13 [2020-10-09 10:36:12,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:36:12,947 INFO L481 AbstractCegarLoop]: Abstraction has 144 states and 363 transitions. [2020-10-09 10:36:12,947 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-09 10:36:12,947 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 363 transitions. [2020-10-09 10:36:12,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-09 10:36:12,948 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:36:12,948 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:36:13,149 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 78 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable84 [2020-10-09 10:36:13,150 INFO L429 AbstractCegarLoop]: === Iteration 86 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:36:13,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:36:13,150 INFO L82 PathProgramCache]: Analyzing trace with hash 9396912, now seen corresponding path program 60 times [2020-10-09 10:36:13,150 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:36:13,151 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022101330] [2020-10-09 10:36:13,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:36:13,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:36:13,254 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:36:13,254 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022101330] [2020-10-09 10:36:13,255 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [929643141] [2020-10-09 10:36:13,255 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 79 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 79 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:36:13,294 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-10-09 10:36:13,295 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:36:13,295 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-09 10:36:13,296 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:36:13,416 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:36:13,417 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:36:13,417 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-09 10:36:13,417 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689423459] [2020-10-09 10:36:13,417 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-09 10:36:13,417 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:36:13,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-09 10:36:13,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2020-10-09 10:36:13,418 INFO L87 Difference]: Start difference. First operand 144 states and 363 transitions. Second operand 15 states. [2020-10-09 10:36:13,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:36:13,605 INFO L93 Difference]: Finished difference Result 185 states and 437 transitions. [2020-10-09 10:36:13,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-09 10:36:13,606 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-09 10:36:13,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:36:13,608 INFO L225 Difference]: With dead ends: 185 [2020-10-09 10:36:13,608 INFO L226 Difference]: Without dead ends: 183 [2020-10-09 10:36:13,608 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2020-10-09 10:36:13,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2020-10-09 10:36:13,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 142. [2020-10-09 10:36:13,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-10-09 10:36:13,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 357 transitions. [2020-10-09 10:36:13,615 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 357 transitions. Word has length 13 [2020-10-09 10:36:13,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:36:13,616 INFO L481 AbstractCegarLoop]: Abstraction has 142 states and 357 transitions. [2020-10-09 10:36:13,616 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-09 10:36:13,616 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 357 transitions. [2020-10-09 10:36:13,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-09 10:36:13,617 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:36:13,617 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:36:13,817 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85,79 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:36:13,818 INFO L429 AbstractCegarLoop]: === Iteration 87 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:36:13,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:36:13,818 INFO L82 PathProgramCache]: Analyzing trace with hash 9425742, now seen corresponding path program 61 times [2020-10-09 10:36:13,818 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:36:13,818 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165131112] [2020-10-09 10:36:13,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:36:13,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:36:13,915 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:36:13,915 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165131112] [2020-10-09 10:36:13,915 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1983493017] [2020-10-09 10:36:13,916 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 80 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 80 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:36:13,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:36:13,953 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-09 10:36:13,954 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:36:14,109 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:36:14,109 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:36:14,109 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-09 10:36:14,110 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928055573] [2020-10-09 10:36:14,110 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-09 10:36:14,110 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:36:14,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-09 10:36:14,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2020-10-09 10:36:14,111 INFO L87 Difference]: Start difference. First operand 142 states and 357 transitions. Second operand 15 states. [2020-10-09 10:36:14,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:36:14,336 INFO L93 Difference]: Finished difference Result 191 states and 449 transitions. [2020-10-09 10:36:14,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-09 10:36:14,337 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-09 10:36:14,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:36:14,339 INFO L225 Difference]: With dead ends: 191 [2020-10-09 10:36:14,339 INFO L226 Difference]: Without dead ends: 189 [2020-10-09 10:36:14,339 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=138, Invalid=282, Unknown=0, NotChecked=0, Total=420 [2020-10-09 10:36:14,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2020-10-09 10:36:14,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 140. [2020-10-09 10:36:14,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-10-09 10:36:14,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 351 transitions. [2020-10-09 10:36:14,342 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 351 transitions. Word has length 13 [2020-10-09 10:36:14,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:36:14,342 INFO L481 AbstractCegarLoop]: Abstraction has 140 states and 351 transitions. [2020-10-09 10:36:14,343 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-09 10:36:14,343 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 351 transitions. [2020-10-09 10:36:14,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-09 10:36:14,344 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:36:14,344 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:36:14,545 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86,80 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:36:14,545 INFO L429 AbstractCegarLoop]: === Iteration 88 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:36:14,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:36:14,546 INFO L82 PathProgramCache]: Analyzing trace with hash 10319472, now seen corresponding path program 62 times [2020-10-09 10:36:14,546 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:36:14,546 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544176531] [2020-10-09 10:36:14,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:36:14,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:36:14,622 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:36:14,622 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544176531] [2020-10-09 10:36:14,622 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2130074286] [2020-10-09 10:36:14,623 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 81 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 81 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:36:14,690 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-09 10:36:14,691 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:36:14,692 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-09 10:36:14,692 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:36:14,818 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:36:14,819 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:36:14,819 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-09 10:36:14,819 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438356758] [2020-10-09 10:36:14,820 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-09 10:36:14,820 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:36:14,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-09 10:36:14,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2020-10-09 10:36:14,820 INFO L87 Difference]: Start difference. First operand 140 states and 351 transitions. Second operand 15 states. [2020-10-09 10:36:15,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:36:15,064 INFO L93 Difference]: Finished difference Result 187 states and 441 transitions. [2020-10-09 10:36:15,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-09 10:36:15,065 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-09 10:36:15,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:36:15,069 INFO L225 Difference]: With dead ends: 187 [2020-10-09 10:36:15,069 INFO L226 Difference]: Without dead ends: 185 [2020-10-09 10:36:15,070 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=158, Invalid=348, Unknown=0, NotChecked=0, Total=506 [2020-10-09 10:36:15,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2020-10-09 10:36:15,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 142. [2020-10-09 10:36:15,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-10-09 10:36:15,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 357 transitions. [2020-10-09 10:36:15,073 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 357 transitions. Word has length 13 [2020-10-09 10:36:15,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:36:15,073 INFO L481 AbstractCegarLoop]: Abstraction has 142 states and 357 transitions. [2020-10-09 10:36:15,074 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-09 10:36:15,074 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 357 transitions. [2020-10-09 10:36:15,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-09 10:36:15,074 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:36:15,074 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:36:15,274 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 81 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable87 [2020-10-09 10:36:15,275 INFO L429 AbstractCegarLoop]: === Iteration 89 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:36:15,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:36:15,275 INFO L82 PathProgramCache]: Analyzing trace with hash 10320433, now seen corresponding path program 63 times [2020-10-09 10:36:15,276 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:36:15,276 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494700487] [2020-10-09 10:36:15,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:36:15,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:36:15,359 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:36:15,359 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494700487] [2020-10-09 10:36:15,360 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [629061543] [2020-10-09 10:36:15,360 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 82 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 82 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:36:15,398 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-09 10:36:15,398 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:36:15,399 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-09 10:36:15,400 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:36:15,505 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:36:15,505 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:36:15,505 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-09 10:36:15,506 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098175177] [2020-10-09 10:36:15,506 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-09 10:36:15,506 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:36:15,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-09 10:36:15,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2020-10-09 10:36:15,506 INFO L87 Difference]: Start difference. First operand 142 states and 357 transitions. Second operand 15 states. [2020-10-09 10:36:15,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:36:15,759 INFO L93 Difference]: Finished difference Result 198 states and 463 transitions. [2020-10-09 10:36:15,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-09 10:36:15,759 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-09 10:36:15,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:36:15,761 INFO L225 Difference]: With dead ends: 198 [2020-10-09 10:36:15,761 INFO L226 Difference]: Without dead ends: 196 [2020-10-09 10:36:15,761 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=161, Invalid=345, Unknown=0, NotChecked=0, Total=506 [2020-10-09 10:36:15,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2020-10-09 10:36:15,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 142. [2020-10-09 10:36:15,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-10-09 10:36:15,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 356 transitions. [2020-10-09 10:36:15,764 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 356 transitions. Word has length 13 [2020-10-09 10:36:15,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:36:15,765 INFO L481 AbstractCegarLoop]: Abstraction has 142 states and 356 transitions. [2020-10-09 10:36:15,765 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-09 10:36:15,765 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 356 transitions. [2020-10-09 10:36:15,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-09 10:36:15,765 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:36:15,765 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:36:15,965 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88,82 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:36:15,966 INFO L429 AbstractCegarLoop]: === Iteration 90 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:36:15,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:36:15,966 INFO L82 PathProgramCache]: Analyzing trace with hash 10349263, now seen corresponding path program 64 times [2020-10-09 10:36:15,967 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:36:15,967 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081496566] [2020-10-09 10:36:15,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:36:15,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:36:16,052 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:36:16,052 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081496566] [2020-10-09 10:36:16,053 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [942502750] [2020-10-09 10:36:16,053 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 83 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 83 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:36:16,091 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-09 10:36:16,091 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:36:16,092 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-09 10:36:16,092 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:36:16,214 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:36:16,215 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:36:16,215 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-09 10:36:16,215 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894429763] [2020-10-09 10:36:16,215 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-09 10:36:16,216 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:36:16,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-09 10:36:16,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2020-10-09 10:36:16,216 INFO L87 Difference]: Start difference. First operand 142 states and 356 transitions. Second operand 15 states. [2020-10-09 10:36:16,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:36:16,494 INFO L93 Difference]: Finished difference Result 189 states and 446 transitions. [2020-10-09 10:36:16,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-09 10:36:16,495 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-09 10:36:16,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:36:16,496 INFO L225 Difference]: With dead ends: 189 [2020-10-09 10:36:16,496 INFO L226 Difference]: Without dead ends: 187 [2020-10-09 10:36:16,497 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=162, Invalid=344, Unknown=0, NotChecked=0, Total=506 [2020-10-09 10:36:16,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2020-10-09 10:36:16,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 139. [2020-10-09 10:36:16,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2020-10-09 10:36:16,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 347 transitions. [2020-10-09 10:36:16,500 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 347 transitions. Word has length 13 [2020-10-09 10:36:16,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:36:16,500 INFO L481 AbstractCegarLoop]: Abstraction has 139 states and 347 transitions. [2020-10-09 10:36:16,500 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-09 10:36:16,500 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 347 transitions. [2020-10-09 10:36:16,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-09 10:36:16,501 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:36:16,501 INFO L421 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:36:16,704 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 83 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable89 [2020-10-09 10:36:16,705 INFO L429 AbstractCegarLoop]: === Iteration 91 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:36:16,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:36:16,705 INFO L82 PathProgramCache]: Analyzing trace with hash 646625441, now seen corresponding path program 65 times [2020-10-09 10:36:16,705 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:36:16,706 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494440587] [2020-10-09 10:36:16,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:36:16,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:36:16,816 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:36:16,816 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494440587] [2020-10-09 10:36:16,816 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [716550302] [2020-10-09 10:36:16,817 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 84 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 84 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:36:16,855 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-09 10:36:16,855 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:36:16,856 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-09 10:36:16,856 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:36:16,973 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:36:16,973 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:36:16,973 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-09 10:36:16,974 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160890211] [2020-10-09 10:36:16,974 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-09 10:36:16,974 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:36:16,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-09 10:36:16,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2020-10-09 10:36:16,975 INFO L87 Difference]: Start difference. First operand 139 states and 347 transitions. Second operand 15 states. [2020-10-09 10:36:17,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:36:17,070 INFO L93 Difference]: Finished difference Result 178 states and 423 transitions. [2020-10-09 10:36:17,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-09 10:36:17,071 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-09 10:36:17,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:36:17,073 INFO L225 Difference]: With dead ends: 178 [2020-10-09 10:36:17,073 INFO L226 Difference]: Without dead ends: 176 [2020-10-09 10:36:17,073 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=83, Invalid=189, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:36:17,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2020-10-09 10:36:17,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 143. [2020-10-09 10:36:17,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-10-09 10:36:17,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 359 transitions. [2020-10-09 10:36:17,076 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 359 transitions. Word has length 13 [2020-10-09 10:36:17,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:36:17,076 INFO L481 AbstractCegarLoop]: Abstraction has 143 states and 359 transitions. [2020-10-09 10:36:17,076 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-09 10:36:17,076 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 359 transitions. [2020-10-09 10:36:17,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-09 10:36:17,077 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:36:17,077 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:36:17,277 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90,84 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:36:17,278 INFO L429 AbstractCegarLoop]: === Iteration 92 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:36:17,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:36:17,278 INFO L82 PathProgramCache]: Analyzing trace with hash 646626402, now seen corresponding path program 66 times [2020-10-09 10:36:17,278 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:36:17,279 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596042232] [2020-10-09 10:36:17,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:36:17,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:36:17,370 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:36:17,371 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596042232] [2020-10-09 10:36:17,371 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1217489854] [2020-10-09 10:36:17,371 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 85 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 85 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:36:17,408 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-10-09 10:36:17,408 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:36:17,409 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-09 10:36:17,409 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:36:17,530 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:36:17,530 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:36:17,531 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-09 10:36:17,531 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253043520] [2020-10-09 10:36:17,531 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-09 10:36:17,531 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:36:17,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-09 10:36:17,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2020-10-09 10:36:17,532 INFO L87 Difference]: Start difference. First operand 143 states and 359 transitions. Second operand 15 states. [2020-10-09 10:36:17,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:36:17,728 INFO L93 Difference]: Finished difference Result 193 states and 452 transitions. [2020-10-09 10:36:17,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-09 10:36:17,729 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-09 10:36:17,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:36:17,730 INFO L225 Difference]: With dead ends: 193 [2020-10-09 10:36:17,730 INFO L226 Difference]: Without dead ends: 191 [2020-10-09 10:36:17,731 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=133, Invalid=287, Unknown=0, NotChecked=0, Total=420 [2020-10-09 10:36:17,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2020-10-09 10:36:17,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 141. [2020-10-09 10:36:17,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-10-09 10:36:17,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 353 transitions. [2020-10-09 10:36:17,735 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 353 transitions. Word has length 13 [2020-10-09 10:36:17,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:36:17,735 INFO L481 AbstractCegarLoop]: Abstraction has 141 states and 353 transitions. [2020-10-09 10:36:17,735 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-09 10:36:17,735 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 353 transitions. [2020-10-09 10:36:17,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-09 10:36:17,735 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:36:17,736 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:36:17,936 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 85 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable91 [2020-10-09 10:36:17,936 INFO L429 AbstractCegarLoop]: === Iteration 93 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:36:17,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:36:17,937 INFO L82 PathProgramCache]: Analyzing trace with hash 646655232, now seen corresponding path program 67 times [2020-10-09 10:36:17,937 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:36:17,937 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018137354] [2020-10-09 10:36:17,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:36:17,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:36:18,021 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:36:18,021 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018137354] [2020-10-09 10:36:18,021 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1068696576] [2020-10-09 10:36:18,022 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 86 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 86 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:36:18,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:36:18,073 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-09 10:36:18,074 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:36:18,232 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:36:18,232 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:36:18,233 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-09 10:36:18,233 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358495547] [2020-10-09 10:36:18,233 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-09 10:36:18,233 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:36:18,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-09 10:36:18,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2020-10-09 10:36:18,234 INFO L87 Difference]: Start difference. First operand 141 states and 353 transitions. Second operand 15 states. [2020-10-09 10:36:18,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:36:18,485 INFO L93 Difference]: Finished difference Result 195 states and 456 transitions. [2020-10-09 10:36:18,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-09 10:36:18,486 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-09 10:36:18,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:36:18,488 INFO L225 Difference]: With dead ends: 195 [2020-10-09 10:36:18,488 INFO L226 Difference]: Without dead ends: 193 [2020-10-09 10:36:18,488 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=146, Invalid=316, Unknown=0, NotChecked=0, Total=462 [2020-10-09 10:36:18,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2020-10-09 10:36:18,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 140. [2020-10-09 10:36:18,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-10-09 10:36:18,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 349 transitions. [2020-10-09 10:36:18,491 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 349 transitions. Word has length 13 [2020-10-09 10:36:18,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:36:18,492 INFO L481 AbstractCegarLoop]: Abstraction has 140 states and 349 transitions. [2020-10-09 10:36:18,492 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-09 10:36:18,492 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 349 transitions. [2020-10-09 10:36:18,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-09 10:36:18,492 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:36:18,492 INFO L421 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:36:18,693 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92,86 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:36:18,693 INFO L429 AbstractCegarLoop]: === Iteration 94 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:36:18,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:36:18,694 INFO L82 PathProgramCache]: Analyzing trace with hash 667181231, now seen corresponding path program 68 times [2020-10-09 10:36:18,694 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:36:18,694 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238116050] [2020-10-09 10:36:18,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:36:18,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:36:18,790 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:36:18,791 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238116050] [2020-10-09 10:36:18,791 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1786286729] [2020-10-09 10:36:18,791 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 87 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 87 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:36:18,847 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-09 10:36:18,847 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:36:18,848 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-09 10:36:18,849 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:36:18,981 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:36:18,982 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:36:18,982 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-09 10:36:18,982 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116878322] [2020-10-09 10:36:18,982 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-09 10:36:18,982 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:36:18,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-09 10:36:18,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2020-10-09 10:36:18,983 INFO L87 Difference]: Start difference. First operand 140 states and 349 transitions. Second operand 15 states. [2020-10-09 10:36:19,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:36:19,094 INFO L93 Difference]: Finished difference Result 174 states and 414 transitions. [2020-10-09 10:36:19,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-09 10:36:19,095 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-09 10:36:19,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:36:19,097 INFO L225 Difference]: With dead ends: 174 [2020-10-09 10:36:19,097 INFO L226 Difference]: Without dead ends: 172 [2020-10-09 10:36:19,097 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=96, Invalid=210, Unknown=0, NotChecked=0, Total=306 [2020-10-09 10:36:19,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2020-10-09 10:36:19,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 142. [2020-10-09 10:36:19,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-10-09 10:36:19,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 355 transitions. [2020-10-09 10:36:19,100 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 355 transitions. Word has length 13 [2020-10-09 10:36:19,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:36:19,100 INFO L481 AbstractCegarLoop]: Abstraction has 142 states and 355 transitions. [2020-10-09 10:36:19,100 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-09 10:36:19,100 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 355 transitions. [2020-10-09 10:36:19,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-09 10:36:19,100 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:36:19,100 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:36:19,301 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 87 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable93 [2020-10-09 10:36:19,301 INFO L429 AbstractCegarLoop]: === Iteration 95 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:36:19,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:36:19,302 INFO L82 PathProgramCache]: Analyzing trace with hash 667182192, now seen corresponding path program 69 times [2020-10-09 10:36:19,302 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:36:19,302 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446698943] [2020-10-09 10:36:19,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:36:19,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:36:19,378 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:36:19,378 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446698943] [2020-10-09 10:36:19,379 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1760140419] [2020-10-09 10:36:19,379 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 88 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 88 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:36:19,417 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-09 10:36:19,417 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:36:19,418 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-09 10:36:19,419 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:36:19,540 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:36:19,541 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:36:19,541 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-09 10:36:19,541 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913027078] [2020-10-09 10:36:19,542 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-09 10:36:19,542 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:36:19,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-09 10:36:19,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2020-10-09 10:36:19,542 INFO L87 Difference]: Start difference. First operand 142 states and 355 transitions. Second operand 15 states. [2020-10-09 10:36:19,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:36:19,781 INFO L93 Difference]: Finished difference Result 189 states and 443 transitions. [2020-10-09 10:36:19,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-09 10:36:19,781 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-09 10:36:19,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:36:19,783 INFO L225 Difference]: With dead ends: 189 [2020-10-09 10:36:19,783 INFO L226 Difference]: Without dead ends: 187 [2020-10-09 10:36:19,784 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=148, Invalid=314, Unknown=0, NotChecked=0, Total=462 [2020-10-09 10:36:19,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2020-10-09 10:36:19,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 141. [2020-10-09 10:36:19,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-10-09 10:36:19,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 351 transitions. [2020-10-09 10:36:19,787 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 351 transitions. Word has length 13 [2020-10-09 10:36:19,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:36:19,787 INFO L481 AbstractCegarLoop]: Abstraction has 141 states and 351 transitions. [2020-10-09 10:36:19,788 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-09 10:36:19,788 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 351 transitions. [2020-10-09 10:36:19,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-09 10:36:19,788 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:36:19,788 INFO L421 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:36:19,990 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94,88 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:36:19,991 INFO L429 AbstractCegarLoop]: === Iteration 96 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:36:19,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:36:19,991 INFO L82 PathProgramCache]: Analyzing trace with hash 667844321, now seen corresponding path program 70 times [2020-10-09 10:36:19,992 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:36:19,992 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281828962] [2020-10-09 10:36:19,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:36:19,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:36:20,069 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:36:20,070 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281828962] [2020-10-09 10:36:20,070 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1601363835] [2020-10-09 10:36:20,070 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 89 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 89 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:36:20,107 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-09 10:36:20,108 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:36:20,108 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-09 10:36:20,109 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:36:20,224 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:36:20,224 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:36:20,224 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-09 10:36:20,224 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673462425] [2020-10-09 10:36:20,225 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-09 10:36:20,225 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:36:20,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-09 10:36:20,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2020-10-09 10:36:20,225 INFO L87 Difference]: Start difference. First operand 141 states and 351 transitions. Second operand 15 states. [2020-10-09 10:36:20,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:36:20,361 INFO L93 Difference]: Finished difference Result 175 states and 413 transitions. [2020-10-09 10:36:20,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-09 10:36:20,362 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-09 10:36:20,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:36:20,363 INFO L225 Difference]: With dead ends: 175 [2020-10-09 10:36:20,363 INFO L226 Difference]: Without dead ends: 173 [2020-10-09 10:36:20,364 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=112, Invalid=230, Unknown=0, NotChecked=0, Total=342 [2020-10-09 10:36:20,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2020-10-09 10:36:20,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 145. [2020-10-09 10:36:20,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2020-10-09 10:36:20,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 357 transitions. [2020-10-09 10:36:20,367 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 357 transitions. Word has length 13 [2020-10-09 10:36:20,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:36:20,367 INFO L481 AbstractCegarLoop]: Abstraction has 145 states and 357 transitions. [2020-10-09 10:36:20,368 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-09 10:36:20,368 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 357 transitions. [2020-10-09 10:36:20,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-09 10:36:20,368 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:36:20,368 INFO L421 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:36:20,568 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95,89 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:36:20,569 INFO L429 AbstractCegarLoop]: === Iteration 97 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:36:20,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:36:20,569 INFO L82 PathProgramCache]: Analyzing trace with hash 667866641, now seen corresponding path program 71 times [2020-10-09 10:36:20,570 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:36:20,570 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686771004] [2020-10-09 10:36:20,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:36:20,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:36:20,646 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:36:20,646 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686771004] [2020-10-09 10:36:20,646 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [639050029] [2020-10-09 10:36:20,647 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 90 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 90 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:36:20,685 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-09 10:36:20,686 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:36:20,686 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-09 10:36:20,687 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:36:20,792 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-09 10:36:20,825 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:36:20,826 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:36:20,826 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-09 10:36:20,826 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646101345] [2020-10-09 10:36:20,826 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-09 10:36:20,827 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:36:20,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-09 10:36:20,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-10-09 10:36:20,827 INFO L87 Difference]: Start difference. First operand 145 states and 357 transitions. Second operand 15 states. [2020-10-09 10:36:21,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:36:21,159 INFO L93 Difference]: Finished difference Result 195 states and 464 transitions. [2020-10-09 10:36:21,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-09 10:36:21,159 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-09 10:36:21,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:36:21,161 INFO L225 Difference]: With dead ends: 195 [2020-10-09 10:36:21,161 INFO L226 Difference]: Without dead ends: 190 [2020-10-09 10:36:21,161 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=199, Invalid=401, Unknown=0, NotChecked=0, Total=600 [2020-10-09 10:36:21,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2020-10-09 10:36:21,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 143. [2020-10-09 10:36:21,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-10-09 10:36:21,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 350 transitions. [2020-10-09 10:36:21,165 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 350 transitions. Word has length 13 [2020-10-09 10:36:21,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:36:21,166 INFO L481 AbstractCegarLoop]: Abstraction has 143 states and 350 transitions. [2020-10-09 10:36:21,166 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-09 10:36:21,166 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 350 transitions. [2020-10-09 10:36:21,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-09 10:36:21,166 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:36:21,166 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:36:21,366 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96,90 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:36:21,367 INFO L429 AbstractCegarLoop]: === Iteration 98 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:36:21,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:36:21,367 INFO L82 PathProgramCache]: Analyzing trace with hash 667874112, now seen corresponding path program 72 times [2020-10-09 10:36:21,368 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:36:21,368 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396625559] [2020-10-09 10:36:21,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:36:21,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:36:21,449 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:36:21,449 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396625559] [2020-10-09 10:36:21,449 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [340728555] [2020-10-09 10:36:21,449 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 91 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 91 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:36:21,488 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-10-09 10:36:21,488 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:36:21,489 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-09 10:36:21,489 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:36:21,622 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:36:21,622 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:36:21,622 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-09 10:36:21,623 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895912585] [2020-10-09 10:36:21,623 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-09 10:36:21,623 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:36:21,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-09 10:36:21,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2020-10-09 10:36:21,624 INFO L87 Difference]: Start difference. First operand 143 states and 350 transitions. Second operand 15 states. [2020-10-09 10:36:21,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:36:21,889 INFO L93 Difference]: Finished difference Result 187 states and 442 transitions. [2020-10-09 10:36:21,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-09 10:36:21,895 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-09 10:36:21,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:36:21,896 INFO L225 Difference]: With dead ends: 187 [2020-10-09 10:36:21,896 INFO L226 Difference]: Without dead ends: 185 [2020-10-09 10:36:21,896 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=159, Invalid=347, Unknown=0, NotChecked=0, Total=506 [2020-10-09 10:36:21,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2020-10-09 10:36:21,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 145. [2020-10-09 10:36:21,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2020-10-09 10:36:21,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 357 transitions. [2020-10-09 10:36:21,899 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 357 transitions. Word has length 13 [2020-10-09 10:36:21,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:36:21,899 INFO L481 AbstractCegarLoop]: Abstraction has 145 states and 357 transitions. [2020-10-09 10:36:21,899 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-09 10:36:21,899 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 357 transitions. [2020-10-09 10:36:21,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-09 10:36:21,899 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:36:21,899 INFO L421 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:36:22,100 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97,91 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:36:22,100 INFO L429 AbstractCegarLoop]: === Iteration 99 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:36:22,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:36:22,101 INFO L82 PathProgramCache]: Analyzing trace with hash 667895471, now seen corresponding path program 73 times [2020-10-09 10:36:22,101 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:36:22,101 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206249245] [2020-10-09 10:36:22,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:36:22,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:36:22,172 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:36:22,172 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206249245] [2020-10-09 10:36:22,172 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [686126205] [2020-10-09 10:36:22,172 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 92 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 92 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:36:22,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:36:22,210 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-09 10:36:22,211 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:36:22,325 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 10:36:22,354 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:36:22,354 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:36:22,354 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-09 10:36:22,355 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125705543] [2020-10-09 10:36:22,355 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-09 10:36:22,355 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:36:22,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-09 10:36:22,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2020-10-09 10:36:22,356 INFO L87 Difference]: Start difference. First operand 145 states and 357 transitions. Second operand 15 states. [2020-10-09 10:36:22,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:36:22,826 INFO L93 Difference]: Finished difference Result 212 states and 503 transitions. [2020-10-09 10:36:22,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-09 10:36:22,827 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-09 10:36:22,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:36:22,828 INFO L225 Difference]: With dead ends: 212 [2020-10-09 10:36:22,829 INFO L226 Difference]: Without dead ends: 207 [2020-10-09 10:36:22,829 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=250, Invalid=506, Unknown=0, NotChecked=0, Total=756 [2020-10-09 10:36:22,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2020-10-09 10:36:22,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 145. [2020-10-09 10:36:22,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2020-10-09 10:36:22,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 357 transitions. [2020-10-09 10:36:22,833 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 357 transitions. Word has length 13 [2020-10-09 10:36:22,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:36:22,833 INFO L481 AbstractCegarLoop]: Abstraction has 145 states and 357 transitions. [2020-10-09 10:36:22,833 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-09 10:36:22,833 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 357 transitions. [2020-10-09 10:36:22,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-09 10:36:22,834 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:36:22,834 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:36:23,034 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 92 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable98 [2020-10-09 10:36:23,034 INFO L429 AbstractCegarLoop]: === Iteration 100 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:36:23,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:36:23,035 INFO L82 PathProgramCache]: Analyzing trace with hash 667896432, now seen corresponding path program 74 times [2020-10-09 10:36:23,035 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:36:23,036 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071050954] [2020-10-09 10:36:23,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:36:23,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:36:23,111 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:36:23,112 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071050954] [2020-10-09 10:36:23,112 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [754697157] [2020-10-09 10:36:23,112 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 93 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 93 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:36:23,157 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-09 10:36:23,157 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:36:23,158 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-09 10:36:23,158 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:36:23,264 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-09 10:36:23,288 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:36:23,289 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:36:23,289 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-09 10:36:23,289 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117143798] [2020-10-09 10:36:23,289 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-09 10:36:23,290 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:36:23,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-09 10:36:23,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-10-09 10:36:23,290 INFO L87 Difference]: Start difference. First operand 145 states and 357 transitions. Second operand 15 states. [2020-10-09 10:36:23,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:36:23,627 INFO L93 Difference]: Finished difference Result 202 states and 480 transitions. [2020-10-09 10:36:23,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-09 10:36:23,627 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-09 10:36:23,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:36:23,629 INFO L225 Difference]: With dead ends: 202 [2020-10-09 10:36:23,629 INFO L226 Difference]: Without dead ends: 197 [2020-10-09 10:36:23,629 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=199, Invalid=401, Unknown=0, NotChecked=0, Total=600 [2020-10-09 10:36:23,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2020-10-09 10:36:23,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 141. [2020-10-09 10:36:23,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-10-09 10:36:23,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 343 transitions. [2020-10-09 10:36:23,631 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 343 transitions. Word has length 13 [2020-10-09 10:36:23,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:36:23,632 INFO L481 AbstractCegarLoop]: Abstraction has 141 states and 343 transitions. [2020-10-09 10:36:23,632 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-09 10:36:23,632 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 343 transitions. [2020-10-09 10:36:23,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-09 10:36:23,632 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:36:23,632 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:36:23,832 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99,93 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:36:23,833 INFO L429 AbstractCegarLoop]: === Iteration 101 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:36:23,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:36:23,833 INFO L82 PathProgramCache]: Analyzing trace with hash 668104752, now seen corresponding path program 75 times [2020-10-09 10:36:23,834 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:36:23,834 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298296420] [2020-10-09 10:36:23,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:36:23,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:36:23,897 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:36:23,897 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298296420] [2020-10-09 10:36:23,897 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1637403015] [2020-10-09 10:36:23,898 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 94 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 94 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:36:23,937 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-09 10:36:23,937 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:36:23,938 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-09 10:36:23,938 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:36:24,122 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:36:24,122 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:36:24,122 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-09 10:36:24,122 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133195083] [2020-10-09 10:36:24,123 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-09 10:36:24,123 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:36:24,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-09 10:36:24,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2020-10-09 10:36:24,123 INFO L87 Difference]: Start difference. First operand 141 states and 343 transitions. Second operand 15 states. [2020-10-09 10:36:24,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:36:24,405 INFO L93 Difference]: Finished difference Result 198 states and 460 transitions. [2020-10-09 10:36:24,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-09 10:36:24,406 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-09 10:36:24,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:36:24,407 INFO L225 Difference]: With dead ends: 198 [2020-10-09 10:36:24,407 INFO L226 Difference]: Without dead ends: 196 [2020-10-09 10:36:24,408 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=148, Invalid=358, Unknown=0, NotChecked=0, Total=506 [2020-10-09 10:36:24,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2020-10-09 10:36:24,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 143. [2020-10-09 10:36:24,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-10-09 10:36:24,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 350 transitions. [2020-10-09 10:36:24,411 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 350 transitions. Word has length 13 [2020-10-09 10:36:24,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:36:24,411 INFO L481 AbstractCegarLoop]: Abstraction has 143 states and 350 transitions. [2020-10-09 10:36:24,412 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-09 10:36:24,412 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 350 transitions. [2020-10-09 10:36:24,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-09 10:36:24,412 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:36:24,412 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:36:24,622 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 94 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable100 [2020-10-09 10:36:24,623 INFO L429 AbstractCegarLoop]: === Iteration 102 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:36:24,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:36:24,623 INFO L82 PathProgramCache]: Analyzing trace with hash 668767842, now seen corresponding path program 76 times [2020-10-09 10:36:24,624 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:36:24,624 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848779744] [2020-10-09 10:36:24,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:36:24,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:36:24,698 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:36:24,698 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848779744] [2020-10-09 10:36:24,698 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [308859726] [2020-10-09 10:36:24,699 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 95 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 95 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:36:24,741 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-09 10:36:24,741 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:36:24,742 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-09 10:36:24,743 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:36:24,928 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:36:24,928 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:36:24,928 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-09 10:36:24,929 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822383883] [2020-10-09 10:36:24,929 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-09 10:36:24,929 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:36:24,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-09 10:36:24,929 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2020-10-09 10:36:24,929 INFO L87 Difference]: Start difference. First operand 143 states and 350 transitions. Second operand 15 states. [2020-10-09 10:36:25,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:36:25,344 INFO L93 Difference]: Finished difference Result 209 states and 491 transitions. [2020-10-09 10:36:25,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-09 10:36:25,344 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-09 10:36:25,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:36:25,346 INFO L225 Difference]: With dead ends: 209 [2020-10-09 10:36:25,346 INFO L226 Difference]: Without dead ends: 207 [2020-10-09 10:36:25,347 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=206, Invalid=444, Unknown=0, NotChecked=0, Total=650 [2020-10-09 10:36:25,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2020-10-09 10:36:25,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 145. [2020-10-09 10:36:25,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2020-10-09 10:36:25,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 357 transitions. [2020-10-09 10:36:25,349 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 357 transitions. Word has length 13 [2020-10-09 10:36:25,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:36:25,349 INFO L481 AbstractCegarLoop]: Abstraction has 145 states and 357 transitions. [2020-10-09 10:36:25,349 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-09 10:36:25,350 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 357 transitions. [2020-10-09 10:36:25,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-09 10:36:25,350 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:36:25,350 INFO L421 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:36:25,550 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 95 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable101 [2020-10-09 10:36:25,551 INFO L429 AbstractCegarLoop]: === Iteration 103 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:36:25,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:36:25,551 INFO L82 PathProgramCache]: Analyzing trace with hash 668789201, now seen corresponding path program 77 times [2020-10-09 10:36:25,552 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:36:25,552 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745388167] [2020-10-09 10:36:25,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:36:25,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:36:25,622 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:36:25,623 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745388167] [2020-10-09 10:36:25,623 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [275987564] [2020-10-09 10:36:25,623 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 96 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 96 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:36:25,662 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-09 10:36:25,662 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:36:25,662 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-09 10:36:25,663 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:36:25,786 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 10:36:25,822 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:36:25,822 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:36:25,822 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-09 10:36:25,823 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864823466] [2020-10-09 10:36:25,823 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-09 10:36:25,823 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:36:25,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-09 10:36:25,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2020-10-09 10:36:25,824 INFO L87 Difference]: Start difference. First operand 145 states and 357 transitions. Second operand 15 states. [2020-10-09 10:36:26,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:36:26,372 INFO L93 Difference]: Finished difference Result 217 states and 518 transitions. [2020-10-09 10:36:26,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-09 10:36:26,373 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-09 10:36:26,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:36:26,374 INFO L225 Difference]: With dead ends: 217 [2020-10-09 10:36:26,374 INFO L226 Difference]: Without dead ends: 212 [2020-10-09 10:36:26,375 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 181 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=289, Invalid=581, Unknown=0, NotChecked=0, Total=870 [2020-10-09 10:36:26,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2020-10-09 10:36:26,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 146. [2020-10-09 10:36:26,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-10-09 10:36:26,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 362 transitions. [2020-10-09 10:36:26,379 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 362 transitions. Word has length 13 [2020-10-09 10:36:26,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:36:26,379 INFO L481 AbstractCegarLoop]: Abstraction has 146 states and 362 transitions. [2020-10-09 10:36:26,379 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-09 10:36:26,380 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 362 transitions. [2020-10-09 10:36:26,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-09 10:36:26,380 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:36:26,380 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:36:26,586 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 96 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable102 [2020-10-09 10:36:26,587 INFO L429 AbstractCegarLoop]: === Iteration 104 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:36:26,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:36:26,587 INFO L82 PathProgramCache]: Analyzing trace with hash 668790162, now seen corresponding path program 78 times [2020-10-09 10:36:26,588 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:36:26,588 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067201283] [2020-10-09 10:36:26,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:36:26,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:36:26,665 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:36:26,665 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067201283] [2020-10-09 10:36:26,665 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [538580535] [2020-10-09 10:36:26,666 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 97 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 97 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:36:26,704 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-10-09 10:36:26,704 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:36:26,705 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-09 10:36:26,705 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:36:28,885 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 10:36:28,929 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:36:28,930 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:36:28,930 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-09 10:36:28,930 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211607547] [2020-10-09 10:36:28,930 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-09 10:36:28,930 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:36:28,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-09 10:36:28,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=142, Unknown=1, NotChecked=0, Total=210 [2020-10-09 10:36:28,931 INFO L87 Difference]: Start difference. First operand 146 states and 362 transitions. Second operand 15 states. [2020-10-09 10:36:33,249 WARN L193 SmtUtils]: Spent 4.11 s on a formula simplification. DAG size of input: 38 DAG size of output: 34 [2020-10-09 10:36:37,466 WARN L193 SmtUtils]: Spent 4.11 s on a formula simplification. DAG size of input: 43 DAG size of output: 37 [2020-10-09 10:36:37,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:36:37,925 INFO L93 Difference]: Finished difference Result 236 states and 562 transitions. [2020-10-09 10:36:37,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-09 10:36:37,925 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-09 10:36:37,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:36:37,926 INFO L225 Difference]: With dead ends: 236 [2020-10-09 10:36:37,926 INFO L226 Difference]: Without dead ends: 228 [2020-10-09 10:36:37,927 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 201 ImplicationChecksByTransitivity, 11.0s TimeCoverageRelationStatistics Valid=293, Invalid=636, Unknown=1, NotChecked=0, Total=930 [2020-10-09 10:36:37,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2020-10-09 10:36:37,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 141. [2020-10-09 10:36:37,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-10-09 10:36:37,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 346 transitions. [2020-10-09 10:36:37,930 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 346 transitions. Word has length 13 [2020-10-09 10:36:37,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:36:37,930 INFO L481 AbstractCegarLoop]: Abstraction has 141 states and 346 transitions. [2020-10-09 10:36:37,930 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-09 10:36:37,930 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 346 transitions. [2020-10-09 10:36:37,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-09 10:36:37,931 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:36:37,931 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:36:38,131 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 97 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable103 [2020-10-09 10:36:38,132 INFO L429 AbstractCegarLoop]: === Iteration 105 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:36:38,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:36:38,132 INFO L82 PathProgramCache]: Analyzing trace with hash 668818992, now seen corresponding path program 79 times [2020-10-09 10:36:38,132 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:36:38,133 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907261880] [2020-10-09 10:36:38,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:36:38,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:36:38,208 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:36:38,209 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907261880] [2020-10-09 10:36:38,209 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [515594618] [2020-10-09 10:36:38,209 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 98 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 98 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:36:38,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:36:38,254 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-09 10:36:38,254 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:36:38,383 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 10:36:38,385 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-09 10:36:38,416 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:36:38,416 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:36:38,416 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-09 10:36:38,417 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456607187] [2020-10-09 10:36:38,417 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-09 10:36:38,417 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:36:38,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-09 10:36:38,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2020-10-09 10:36:38,417 INFO L87 Difference]: Start difference. First operand 141 states and 346 transitions. Second operand 15 states. [2020-10-09 10:36:38,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:36:38,967 INFO L93 Difference]: Finished difference Result 219 states and 522 transitions. [2020-10-09 10:36:38,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-09 10:36:38,967 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-09 10:36:38,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:36:38,968 INFO L225 Difference]: With dead ends: 219 [2020-10-09 10:36:38,969 INFO L226 Difference]: Without dead ends: 214 [2020-10-09 10:36:38,969 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=262, Invalid=550, Unknown=0, NotChecked=0, Total=812 [2020-10-09 10:36:38,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2020-10-09 10:36:38,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 140. [2020-10-09 10:36:38,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-10-09 10:36:38,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 341 transitions. [2020-10-09 10:36:38,972 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 341 transitions. Word has length 13 [2020-10-09 10:36:38,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:36:38,972 INFO L481 AbstractCegarLoop]: Abstraction has 140 states and 341 transitions. [2020-10-09 10:36:38,972 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-09 10:36:38,972 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 341 transitions. [2020-10-09 10:36:38,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-09 10:36:38,972 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:36:38,973 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:36:39,174 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104,98 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:36:39,174 INFO L429 AbstractCegarLoop]: === Iteration 106 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:36:39,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:36:39,175 INFO L82 PathProgramCache]: Analyzing trace with hash 675254592, now seen corresponding path program 80 times [2020-10-09 10:36:39,175 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:36:39,175 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256163287] [2020-10-09 10:36:39,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:36:39,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:36:39,248 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:36:39,249 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256163287] [2020-10-09 10:36:39,249 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1381978345] [2020-10-09 10:36:39,249 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 99 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 99 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:36:39,289 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-09 10:36:39,290 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:36:39,290 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-09 10:36:39,291 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:36:39,427 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:36:39,430 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:36:39,430 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-09 10:36:39,431 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819038317] [2020-10-09 10:36:39,431 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-09 10:36:39,431 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:36:39,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-09 10:36:39,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2020-10-09 10:36:39,431 INFO L87 Difference]: Start difference. First operand 140 states and 341 transitions. Second operand 15 states. [2020-10-09 10:36:39,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:36:39,690 INFO L93 Difference]: Finished difference Result 197 states and 457 transitions. [2020-10-09 10:36:39,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-09 10:36:39,691 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-09 10:36:39,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:36:39,692 INFO L225 Difference]: With dead ends: 197 [2020-10-09 10:36:39,692 INFO L226 Difference]: Without dead ends: 195 [2020-10-09 10:36:39,692 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=145, Invalid=361, Unknown=0, NotChecked=0, Total=506 [2020-10-09 10:36:39,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2020-10-09 10:36:39,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 143. [2020-10-09 10:36:39,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-10-09 10:36:39,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 352 transitions. [2020-10-09 10:36:39,695 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 352 transitions. Word has length 13 [2020-10-09 10:36:39,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:36:39,695 INFO L481 AbstractCegarLoop]: Abstraction has 143 states and 352 transitions. [2020-10-09 10:36:39,696 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-09 10:36:39,696 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 352 transitions. [2020-10-09 10:36:39,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-09 10:36:39,696 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:36:39,696 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:36:39,898 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105,99 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:36:39,899 INFO L429 AbstractCegarLoop]: === Iteration 107 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:36:39,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:36:39,899 INFO L82 PathProgramCache]: Analyzing trace with hash 675255553, now seen corresponding path program 81 times [2020-10-09 10:36:39,899 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:36:39,900 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322973611] [2020-10-09 10:36:39,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:36:39,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:36:39,973 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:36:39,974 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322973611] [2020-10-09 10:36:39,974 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1761959046] [2020-10-09 10:36:39,974 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 100 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 100 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:36:40,018 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-09 10:36:40,018 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:36:40,019 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-09 10:36:40,019 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:36:40,147 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:36:40,147 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:36:40,147 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-09 10:36:40,147 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811627775] [2020-10-09 10:36:40,148 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-09 10:36:40,148 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:36:40,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-09 10:36:40,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2020-10-09 10:36:40,148 INFO L87 Difference]: Start difference. First operand 143 states and 352 transitions. Second operand 15 states. [2020-10-09 10:36:40,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:36:40,419 INFO L93 Difference]: Finished difference Result 202 states and 467 transitions. [2020-10-09 10:36:40,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-09 10:36:40,420 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-09 10:36:40,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:36:40,420 INFO L225 Difference]: With dead ends: 202 [2020-10-09 10:36:40,421 INFO L226 Difference]: Without dead ends: 200 [2020-10-09 10:36:40,421 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=147, Invalid=359, Unknown=0, NotChecked=0, Total=506 [2020-10-09 10:36:40,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2020-10-09 10:36:40,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 143. [2020-10-09 10:36:40,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-10-09 10:36:40,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 351 transitions. [2020-10-09 10:36:40,424 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 351 transitions. Word has length 13 [2020-10-09 10:36:40,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:36:40,425 INFO L481 AbstractCegarLoop]: Abstraction has 143 states and 351 transitions. [2020-10-09 10:36:40,425 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-09 10:36:40,425 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 351 transitions. [2020-10-09 10:36:40,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-09 10:36:40,425 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:36:40,425 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:36:40,626 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 100 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable106 [2020-10-09 10:36:40,626 INFO L429 AbstractCegarLoop]: === Iteration 108 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:36:40,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:36:40,627 INFO L82 PathProgramCache]: Analyzing trace with hash 675284383, now seen corresponding path program 82 times [2020-10-09 10:36:40,627 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:36:40,627 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258551649] [2020-10-09 10:36:40,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:36:40,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:36:40,696 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:36:40,697 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258551649] [2020-10-09 10:36:40,697 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [31777774] [2020-10-09 10:36:40,697 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 101 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 101 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:36:40,733 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-09 10:36:40,733 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:36:40,734 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-09 10:36:40,734 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:36:40,871 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:36:40,872 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:36:40,872 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-09 10:36:40,872 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610337463] [2020-10-09 10:36:40,872 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-09 10:36:40,872 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:36:40,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-09 10:36:40,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2020-10-09 10:36:40,873 INFO L87 Difference]: Start difference. First operand 143 states and 351 transitions. Second operand 15 states. [2020-10-09 10:36:41,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:36:41,159 INFO L93 Difference]: Finished difference Result 197 states and 458 transitions. [2020-10-09 10:36:41,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-09 10:36:41,159 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-09 10:36:41,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:36:41,160 INFO L225 Difference]: With dead ends: 197 [2020-10-09 10:36:41,160 INFO L226 Difference]: Without dead ends: 195 [2020-10-09 10:36:41,160 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=144, Invalid=362, Unknown=0, NotChecked=0, Total=506 [2020-10-09 10:36:41,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2020-10-09 10:36:41,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 142. [2020-10-09 10:36:41,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-10-09 10:36:41,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 348 transitions. [2020-10-09 10:36:41,163 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 348 transitions. Word has length 13 [2020-10-09 10:36:41,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:36:41,163 INFO L481 AbstractCegarLoop]: Abstraction has 142 states and 348 transitions. [2020-10-09 10:36:41,163 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-09 10:36:41,163 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 348 transitions. [2020-10-09 10:36:41,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-09 10:36:41,164 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:36:41,164 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:36:41,364 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 101 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable107 [2020-10-09 10:36:41,364 INFO L429 AbstractCegarLoop]: === Iteration 109 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:36:41,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:36:41,365 INFO L82 PathProgramCache]: Analyzing trace with hash 695810382, now seen corresponding path program 83 times [2020-10-09 10:36:41,365 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:36:41,365 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027292658] [2020-10-09 10:36:41,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:36:41,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:36:41,435 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:36:41,436 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027292658] [2020-10-09 10:36:41,436 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [135843783] [2020-10-09 10:36:41,436 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 102 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 102 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:36:41,475 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-09 10:36:41,475 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:36:41,476 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-09 10:36:41,477 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:36:41,656 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:36:41,656 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:36:41,656 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-09 10:36:41,657 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347408090] [2020-10-09 10:36:41,657 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-09 10:36:41,657 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:36:41,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-09 10:36:41,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2020-10-09 10:36:41,658 INFO L87 Difference]: Start difference. First operand 142 states and 348 transitions. Second operand 15 states. [2020-10-09 10:36:42,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:36:42,236 INFO L93 Difference]: Finished difference Result 214 states and 496 transitions. [2020-10-09 10:36:42,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-09 10:36:42,237 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-09 10:36:42,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:36:42,238 INFO L225 Difference]: With dead ends: 214 [2020-10-09 10:36:42,238 INFO L226 Difference]: Without dead ends: 212 [2020-10-09 10:36:42,238 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=227, Invalid=529, Unknown=0, NotChecked=0, Total=756 [2020-10-09 10:36:42,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2020-10-09 10:36:42,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 144. [2020-10-09 10:36:42,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-10-09 10:36:42,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 356 transitions. [2020-10-09 10:36:42,243 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 356 transitions. Word has length 13 [2020-10-09 10:36:42,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:36:42,244 INFO L481 AbstractCegarLoop]: Abstraction has 144 states and 356 transitions. [2020-10-09 10:36:42,244 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-09 10:36:42,244 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 356 transitions. [2020-10-09 10:36:42,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-09 10:36:42,244 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:36:42,244 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:36:42,454 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 102 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable108 [2020-10-09 10:36:42,454 INFO L429 AbstractCegarLoop]: === Iteration 110 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:36:42,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:36:42,455 INFO L82 PathProgramCache]: Analyzing trace with hash 695811343, now seen corresponding path program 84 times [2020-10-09 10:36:42,455 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:36:42,455 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090022926] [2020-10-09 10:36:42,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:36:42,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:36:42,567 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:36:42,567 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090022926] [2020-10-09 10:36:42,567 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1895839415] [2020-10-09 10:36:42,567 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 103 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 103 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:36:42,614 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-10-09 10:36:42,614 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:36:42,615 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-09 10:36:42,615 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:36:42,735 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:36:42,735 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:36:42,735 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-09 10:36:42,736 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795997312] [2020-10-09 10:36:42,736 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-09 10:36:42,736 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:36:42,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-09 10:36:42,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2020-10-09 10:36:42,737 INFO L87 Difference]: Start difference. First operand 144 states and 356 transitions. Second operand 15 states. [2020-10-09 10:36:43,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:36:43,113 INFO L93 Difference]: Finished difference Result 217 states and 502 transitions. [2020-10-09 10:36:43,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-09 10:36:43,114 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-09 10:36:43,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:36:43,115 INFO L225 Difference]: With dead ends: 217 [2020-10-09 10:36:43,115 INFO L226 Difference]: Without dead ends: 215 [2020-10-09 10:36:43,116 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=207, Invalid=495, Unknown=0, NotChecked=0, Total=702 [2020-10-09 10:36:43,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2020-10-09 10:36:43,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 145. [2020-10-09 10:36:43,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2020-10-09 10:36:43,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 360 transitions. [2020-10-09 10:36:43,119 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 360 transitions. Word has length 13 [2020-10-09 10:36:43,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:36:43,120 INFO L481 AbstractCegarLoop]: Abstraction has 145 states and 360 transitions. [2020-10-09 10:36:43,120 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-09 10:36:43,120 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 360 transitions. [2020-10-09 10:36:43,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-09 10:36:43,120 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:36:43,120 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:36:43,330 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109,103 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:36:43,330 INFO L429 AbstractCegarLoop]: === Iteration 111 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:36:43,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:36:43,331 INFO L82 PathProgramCache]: Analyzing trace with hash 696473472, now seen corresponding path program 85 times [2020-10-09 10:36:43,331 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:36:43,331 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726346753] [2020-10-09 10:36:43,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:36:43,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:36:43,397 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:36:43,397 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726346753] [2020-10-09 10:36:43,397 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2134728743] [2020-10-09 10:36:43,397 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 104 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 104 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:36:43,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:36:43,432 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-09 10:36:43,432 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:36:43,557 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:36:43,558 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:36:43,558 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-09 10:36:43,558 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722190807] [2020-10-09 10:36:43,559 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-09 10:36:43,559 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:36:43,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-09 10:36:43,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2020-10-09 10:36:43,559 INFO L87 Difference]: Start difference. First operand 145 states and 360 transitions. Second operand 15 states. [2020-10-09 10:36:43,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:36:43,958 INFO L93 Difference]: Finished difference Result 211 states and 500 transitions. [2020-10-09 10:36:43,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-09 10:36:43,958 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-09 10:36:43,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:36:43,959 INFO L225 Difference]: With dead ends: 211 [2020-10-09 10:36:43,959 INFO L226 Difference]: Without dead ends: 209 [2020-10-09 10:36:43,959 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=238, Invalid=518, Unknown=0, NotChecked=0, Total=756 [2020-10-09 10:36:43,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2020-10-09 10:36:43,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 147. [2020-10-09 10:36:43,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2020-10-09 10:36:43,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 367 transitions. [2020-10-09 10:36:43,962 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 367 transitions. Word has length 13 [2020-10-09 10:36:43,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:36:43,963 INFO L481 AbstractCegarLoop]: Abstraction has 147 states and 367 transitions. [2020-10-09 10:36:43,963 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-09 10:36:43,963 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 367 transitions. [2020-10-09 10:36:43,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-09 10:36:43,963 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:36:43,963 INFO L421 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:36:44,164 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110,104 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:36:44,164 INFO L429 AbstractCegarLoop]: === Iteration 112 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:36:44,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:36:44,165 INFO L82 PathProgramCache]: Analyzing trace with hash 696494831, now seen corresponding path program 86 times [2020-10-09 10:36:44,165 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:36:44,165 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413368208] [2020-10-09 10:36:44,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:36:44,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:36:44,233 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:36:44,233 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413368208] [2020-10-09 10:36:44,233 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1322028517] [2020-10-09 10:36:44,234 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 105 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 105 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:36:44,272 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-09 10:36:44,273 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:36:44,273 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-09 10:36:44,274 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:36:44,372 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 10:36:44,381 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:36:44,381 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:36:44,382 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-09 10:36:44,382 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848289685] [2020-10-09 10:36:44,382 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-09 10:36:44,382 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:36:44,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-09 10:36:44,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2020-10-09 10:36:44,383 INFO L87 Difference]: Start difference. First operand 147 states and 367 transitions. Second operand 15 states. [2020-10-09 10:36:44,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:36:44,853 INFO L93 Difference]: Finished difference Result 211 states and 507 transitions. [2020-10-09 10:36:44,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-09 10:36:44,854 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-09 10:36:44,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:36:44,855 INFO L225 Difference]: With dead ends: 211 [2020-10-09 10:36:44,855 INFO L226 Difference]: Without dead ends: 206 [2020-10-09 10:36:44,855 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 223 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=323, Invalid=669, Unknown=0, NotChecked=0, Total=992 [2020-10-09 10:36:44,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2020-10-09 10:36:44,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 147. [2020-10-09 10:36:44,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2020-10-09 10:36:44,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 367 transitions. [2020-10-09 10:36:44,858 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 367 transitions. Word has length 13 [2020-10-09 10:36:44,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:36:44,858 INFO L481 AbstractCegarLoop]: Abstraction has 147 states and 367 transitions. [2020-10-09 10:36:44,858 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-09 10:36:44,858 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 367 transitions. [2020-10-09 10:36:44,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-09 10:36:44,858 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:36:44,859 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:36:45,059 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 105 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable111 [2020-10-09 10:36:45,059 INFO L429 AbstractCegarLoop]: === Iteration 113 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:36:45,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:36:45,060 INFO L82 PathProgramCache]: Analyzing trace with hash 696495792, now seen corresponding path program 87 times [2020-10-09 10:36:45,060 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:36:45,060 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582630377] [2020-10-09 10:36:45,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:36:45,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:36:45,137 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:36:45,137 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582630377] [2020-10-09 10:36:45,137 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [635699462] [2020-10-09 10:36:45,137 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 106 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 106 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:36:45,174 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-09 10:36:45,174 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:36:45,174 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-09 10:36:45,175 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:36:45,281 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-09 10:36:45,314 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:36:45,315 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:36:45,315 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-09 10:36:45,315 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549197514] [2020-10-09 10:36:45,315 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-09 10:36:45,316 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:36:45,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-09 10:36:45,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2020-10-09 10:36:45,316 INFO L87 Difference]: Start difference. First operand 147 states and 367 transitions. Second operand 15 states. [2020-10-09 10:36:45,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:36:45,909 INFO L93 Difference]: Finished difference Result 227 states and 546 transitions. [2020-10-09 10:36:45,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-09 10:36:45,909 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-09 10:36:45,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:36:45,910 INFO L225 Difference]: With dead ends: 227 [2020-10-09 10:36:45,911 INFO L226 Difference]: Without dead ends: 222 [2020-10-09 10:36:45,911 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 240 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=325, Invalid=731, Unknown=0, NotChecked=0, Total=1056 [2020-10-09 10:36:45,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2020-10-09 10:36:45,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 145. [2020-10-09 10:36:45,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2020-10-09 10:36:45,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 360 transitions. [2020-10-09 10:36:45,915 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 360 transitions. Word has length 13 [2020-10-09 10:36:45,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:36:45,915 INFO L481 AbstractCegarLoop]: Abstraction has 145 states and 360 transitions. [2020-10-09 10:36:45,915 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-09 10:36:45,915 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 360 transitions. [2020-10-09 10:36:45,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-09 10:36:45,915 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:36:45,915 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:36:46,117 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 106 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable112 [2020-10-09 10:36:46,117 INFO L429 AbstractCegarLoop]: === Iteration 114 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:36:46,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:36:46,118 INFO L82 PathProgramCache]: Analyzing trace with hash 696503263, now seen corresponding path program 88 times [2020-10-09 10:36:46,118 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:36:46,118 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883589501] [2020-10-09 10:36:46,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:36:46,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:36:46,193 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:36:46,194 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883589501] [2020-10-09 10:36:46,194 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1260561636] [2020-10-09 10:36:46,194 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 107 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 107 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:36:46,232 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-09 10:36:46,232 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:36:46,233 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-09 10:36:46,233 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:36:46,354 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:36:46,355 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:36:46,355 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-09 10:36:46,355 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909903054] [2020-10-09 10:36:46,356 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-09 10:36:46,356 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:36:46,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-09 10:36:46,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2020-10-09 10:36:46,356 INFO L87 Difference]: Start difference. First operand 145 states and 360 transitions. Second operand 15 states. [2020-10-09 10:36:46,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:36:46,825 INFO L93 Difference]: Finished difference Result 221 states and 523 transitions. [2020-10-09 10:36:46,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-09 10:36:46,825 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-09 10:36:46,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:36:46,826 INFO L225 Difference]: With dead ends: 221 [2020-10-09 10:36:46,826 INFO L226 Difference]: Without dead ends: 219 [2020-10-09 10:36:46,826 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=278, Invalid=652, Unknown=0, NotChecked=0, Total=930 [2020-10-09 10:36:46,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2020-10-09 10:36:46,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 147. [2020-10-09 10:36:46,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2020-10-09 10:36:46,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 367 transitions. [2020-10-09 10:36:46,830 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 367 transitions. Word has length 13 [2020-10-09 10:36:46,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:36:46,831 INFO L481 AbstractCegarLoop]: Abstraction has 147 states and 367 transitions. [2020-10-09 10:36:46,831 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-09 10:36:46,831 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 367 transitions. [2020-10-09 10:36:46,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-09 10:36:46,831 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:36:46,831 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:36:47,031 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113,107 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:36:47,032 INFO L429 AbstractCegarLoop]: === Iteration 115 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:36:47,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:36:47,032 INFO L82 PathProgramCache]: Analyzing trace with hash 696524622, now seen corresponding path program 89 times [2020-10-09 10:36:47,033 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:36:47,033 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730036649] [2020-10-09 10:36:47,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:36:47,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:36:47,102 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:36:47,102 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730036649] [2020-10-09 10:36:47,102 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1353709280] [2020-10-09 10:36:47,103 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 108 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 108 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:36:47,140 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-09 10:36:47,141 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:36:47,141 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-09 10:36:47,142 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:36:47,244 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 10:36:47,253 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:36:47,253 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:36:47,253 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-09 10:36:47,254 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112959531] [2020-10-09 10:36:47,254 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-09 10:36:47,254 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:36:47,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-09 10:36:47,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2020-10-09 10:36:47,255 INFO L87 Difference]: Start difference. First operand 147 states and 367 transitions. Second operand 15 states. [2020-10-09 10:36:47,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:36:47,834 INFO L93 Difference]: Finished difference Result 240 states and 577 transitions. [2020-10-09 10:36:47,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-09 10:36:47,835 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-09 10:36:47,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:36:47,836 INFO L225 Difference]: With dead ends: 240 [2020-10-09 10:36:47,836 INFO L226 Difference]: Without dead ends: 232 [2020-10-09 10:36:47,836 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 271 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=349, Invalid=773, Unknown=0, NotChecked=0, Total=1122 [2020-10-09 10:36:47,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2020-10-09 10:36:47,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 148. [2020-10-09 10:36:47,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2020-10-09 10:36:47,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 372 transitions. [2020-10-09 10:36:47,839 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 372 transitions. Word has length 13 [2020-10-09 10:36:47,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:36:47,840 INFO L481 AbstractCegarLoop]: Abstraction has 148 states and 372 transitions. [2020-10-09 10:36:47,840 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-09 10:36:47,840 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 372 transitions. [2020-10-09 10:36:47,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-09 10:36:47,840 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:36:47,840 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:36:48,041 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 108 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable114 [2020-10-09 10:36:48,041 INFO L429 AbstractCegarLoop]: === Iteration 116 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:36:48,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:36:48,042 INFO L82 PathProgramCache]: Analyzing trace with hash 696525583, now seen corresponding path program 90 times [2020-10-09 10:36:48,042 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:36:48,042 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031498560] [2020-10-09 10:36:48,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:36:48,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:36:48,111 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:36:48,112 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031498560] [2020-10-09 10:36:48,112 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1799382993] [2020-10-09 10:36:48,112 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 109 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 109 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:36:48,158 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-10-09 10:36:48,159 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:36:48,159 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-09 10:36:48,160 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:36:48,301 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-09 10:36:48,315 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:36:48,315 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:36:48,315 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-09 10:36:48,315 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329714057] [2020-10-09 10:36:48,316 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-09 10:36:48,316 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:36:48,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-09 10:36:48,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-10-09 10:36:48,316 INFO L87 Difference]: Start difference. First operand 148 states and 372 transitions. Second operand 15 states. [2020-10-09 10:36:49,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:36:49,039 INFO L93 Difference]: Finished difference Result 238 states and 576 transitions. [2020-10-09 10:36:49,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-09 10:36:49,040 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-09 10:36:49,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:36:49,041 INFO L225 Difference]: With dead ends: 238 [2020-10-09 10:36:49,041 INFO L226 Difference]: Without dead ends: 230 [2020-10-09 10:36:49,042 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 279 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=343, Invalid=779, Unknown=0, NotChecked=0, Total=1122 [2020-10-09 10:36:49,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2020-10-09 10:36:49,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 142. [2020-10-09 10:36:49,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-10-09 10:36:49,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 354 transitions. [2020-10-09 10:36:49,045 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 354 transitions. Word has length 13 [2020-10-09 10:36:49,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:36:49,046 INFO L481 AbstractCegarLoop]: Abstraction has 142 states and 354 transitions. [2020-10-09 10:36:49,046 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-09 10:36:49,046 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 354 transitions. [2020-10-09 10:36:49,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-09 10:36:49,046 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:36:49,046 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:36:49,247 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115,109 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:36:49,247 INFO L429 AbstractCegarLoop]: === Iteration 117 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:36:49,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:36:49,247 INFO L82 PathProgramCache]: Analyzing trace with hash 696733903, now seen corresponding path program 91 times [2020-10-09 10:36:49,247 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:36:49,248 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069296818] [2020-10-09 10:36:49,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:36:49,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:36:49,319 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:36:49,320 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069296818] [2020-10-09 10:36:49,320 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2138717964] [2020-10-09 10:36:49,320 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 110 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 110 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:36:49,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:36:49,360 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-09 10:36:49,360 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:36:49,501 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:36:49,501 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:36:49,501 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-09 10:36:49,502 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817017035] [2020-10-09 10:36:49,502 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-09 10:36:49,502 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:36:49,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-09 10:36:49,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2020-10-09 10:36:49,503 INFO L87 Difference]: Start difference. First operand 142 states and 354 transitions. Second operand 15 states. [2020-10-09 10:36:49,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:36:49,751 INFO L93 Difference]: Finished difference Result 195 states and 459 transitions. [2020-10-09 10:36:49,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-09 10:36:49,751 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-09 10:36:49,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:36:49,752 INFO L225 Difference]: With dead ends: 195 [2020-10-09 10:36:49,752 INFO L226 Difference]: Without dead ends: 193 [2020-10-09 10:36:49,752 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=149, Invalid=357, Unknown=0, NotChecked=0, Total=506 [2020-10-09 10:36:49,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2020-10-09 10:36:49,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 142. [2020-10-09 10:36:49,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-10-09 10:36:49,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 354 transitions. [2020-10-09 10:36:49,754 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 354 transitions. Word has length 13 [2020-10-09 10:36:49,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:36:49,755 INFO L481 AbstractCegarLoop]: Abstraction has 142 states and 354 transitions. [2020-10-09 10:36:49,755 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-09 10:36:49,755 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 354 transitions. [2020-10-09 10:36:49,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-09 10:36:49,755 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:36:49,756 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:36:49,958 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 110 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable116 [2020-10-09 10:36:49,960 INFO L429 AbstractCegarLoop]: === Iteration 118 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:36:49,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:36:49,961 INFO L82 PathProgramCache]: Analyzing trace with hash 697396993, now seen corresponding path program 92 times [2020-10-09 10:36:49,961 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:36:49,961 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313626303] [2020-10-09 10:36:49,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:36:49,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:36:50,039 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:36:50,040 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313626303] [2020-10-09 10:36:50,040 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1804153097] [2020-10-09 10:36:50,040 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 111 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 111 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:36:50,079 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-09 10:36:50,079 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:36:50,079 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-09 10:36:50,080 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:36:50,217 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:36:50,217 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:36:50,217 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-09 10:36:50,218 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373355555] [2020-10-09 10:36:50,218 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-09 10:36:50,218 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:36:50,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-09 10:36:50,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2020-10-09 10:36:50,219 INFO L87 Difference]: Start difference. First operand 142 states and 354 transitions. Second operand 15 states. [2020-10-09 10:36:50,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:36:50,698 INFO L93 Difference]: Finished difference Result 206 states and 489 transitions. [2020-10-09 10:36:50,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-09 10:36:50,699 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-09 10:36:50,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:36:50,700 INFO L225 Difference]: With dead ends: 206 [2020-10-09 10:36:50,700 INFO L226 Difference]: Without dead ends: 204 [2020-10-09 10:36:50,700 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=230, Invalid=526, Unknown=0, NotChecked=0, Total=756 [2020-10-09 10:36:50,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2020-10-09 10:36:50,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 143. [2020-10-09 10:36:50,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-10-09 10:36:50,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 356 transitions. [2020-10-09 10:36:50,703 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 356 transitions. Word has length 13 [2020-10-09 10:36:50,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:36:50,703 INFO L481 AbstractCegarLoop]: Abstraction has 143 states and 356 transitions. [2020-10-09 10:36:50,703 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-09 10:36:50,703 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 356 transitions. [2020-10-09 10:36:50,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-09 10:36:50,704 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:36:50,704 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:36:50,904 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117,111 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:36:50,905 INFO L429 AbstractCegarLoop]: === Iteration 119 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:36:50,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:36:50,905 INFO L82 PathProgramCache]: Analyzing trace with hash 697419313, now seen corresponding path program 93 times [2020-10-09 10:36:50,905 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:36:50,906 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853798502] [2020-10-09 10:36:50,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:36:50,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:36:50,982 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:36:50,983 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853798502] [2020-10-09 10:36:50,983 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1634680927] [2020-10-09 10:36:50,983 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 112 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 112 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:36:51,021 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-09 10:36:51,021 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:36:51,022 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-09 10:36:51,023 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:36:51,149 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-09 10:36:52,296 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:36:52,296 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:36:52,296 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-09 10:36:52,297 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966226016] [2020-10-09 10:36:52,297 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-09 10:36:52,297 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:36:52,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-09 10:36:52,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=171, Unknown=1, NotChecked=0, Total=240 [2020-10-09 10:36:52,298 INFO L87 Difference]: Start difference. First operand 143 states and 356 transitions. Second operand 16 states. [2020-10-09 10:36:54,719 WARN L193 SmtUtils]: Spent 2.04 s on a formula simplification that was a NOOP. DAG size: 25 [2020-10-09 10:37:15,469 WARN L193 SmtUtils]: Spent 2.04 s on a formula simplification that was a NOOP. DAG size: 29 [2020-10-09 10:37:43,577 WARN L193 SmtUtils]: Spent 2.05 s on a formula simplification. DAG size of input: 26 DAG size of output: 25 [2020-10-09 10:38:09,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:38:09,921 INFO L93 Difference]: Finished difference Result 252 states and 593 transitions. [2020-10-09 10:38:09,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-09 10:38:09,922 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 13 [2020-10-09 10:38:09,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:38:09,923 INFO L225 Difference]: With dead ends: 252 [2020-10-09 10:38:09,923 INFO L226 Difference]: Without dead ends: 247 [2020-10-09 10:38:09,924 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 360 ImplicationChecksByTransitivity, 28.5s TimeCoverageRelationStatistics Valid=389, Invalid=934, Unknown=9, NotChecked=0, Total=1332 [2020-10-09 10:38:09,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2020-10-09 10:38:09,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 139. [2020-10-09 10:38:09,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2020-10-09 10:38:09,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 339 transitions. [2020-10-09 10:38:09,928 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 339 transitions. Word has length 13 [2020-10-09 10:38:09,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:38:09,929 INFO L481 AbstractCegarLoop]: Abstraction has 139 states and 339 transitions. [2020-10-09 10:38:09,929 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-09 10:38:09,929 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 339 transitions. [2020-10-09 10:38:09,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-09 10:38:09,929 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:38:09,929 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:38:10,139 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 112 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable118 [2020-10-09 10:38:10,140 INFO L429 AbstractCegarLoop]: === Iteration 120 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:38:10,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:38:10,140 INFO L82 PathProgramCache]: Analyzing trace with hash 896899632, now seen corresponding path program 94 times [2020-10-09 10:38:10,140 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:38:10,141 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139238706] [2020-10-09 10:38:10,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:38:10,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:38:10,227 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:38:10,227 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139238706] [2020-10-09 10:38:10,227 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1684055510] [2020-10-09 10:38:10,228 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 113 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 113 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:38:10,266 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-09 10:38:10,266 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:38:10,267 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-09 10:38:10,267 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:38:10,394 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:38:10,394 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:38:10,394 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-09 10:38:10,395 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671991492] [2020-10-09 10:38:10,395 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-09 10:38:10,395 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:38:10,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-09 10:38:10,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2020-10-09 10:38:10,396 INFO L87 Difference]: Start difference. First operand 139 states and 339 transitions. Second operand 15 states. [2020-10-09 10:38:10,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:38:10,611 INFO L93 Difference]: Finished difference Result 194 states and 449 transitions. [2020-10-09 10:38:10,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-09 10:38:10,612 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-09 10:38:10,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:38:10,612 INFO L225 Difference]: With dead ends: 194 [2020-10-09 10:38:10,612 INFO L226 Difference]: Without dead ends: 192 [2020-10-09 10:38:10,613 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=129, Invalid=291, Unknown=0, NotChecked=0, Total=420 [2020-10-09 10:38:10,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2020-10-09 10:38:10,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 141. [2020-10-09 10:38:10,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-10-09 10:38:10,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 345 transitions. [2020-10-09 10:38:10,615 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 345 transitions. Word has length 13 [2020-10-09 10:38:10,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:38:10,615 INFO L481 AbstractCegarLoop]: Abstraction has 141 states and 345 transitions. [2020-10-09 10:38:10,615 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-09 10:38:10,615 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 345 transitions. [2020-10-09 10:38:10,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-09 10:38:10,615 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:38:10,616 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:38:10,816 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119,113 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:38:10,816 INFO L429 AbstractCegarLoop]: === Iteration 121 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:38:10,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:38:10,817 INFO L82 PathProgramCache]: Analyzing trace with hash 896900593, now seen corresponding path program 95 times [2020-10-09 10:38:10,817 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:38:10,817 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000317128] [2020-10-09 10:38:10,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:38:10,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:38:10,904 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:38:10,904 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000317128] [2020-10-09 10:38:10,904 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1359864160] [2020-10-09 10:38:10,904 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 114 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 114 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:38:10,943 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-09 10:38:10,944 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:38:10,945 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-09 10:38:10,945 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:38:11,089 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:38:11,090 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:38:11,090 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-09 10:38:11,090 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60727505] [2020-10-09 10:38:11,090 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-09 10:38:11,090 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:38:11,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-09 10:38:11,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2020-10-09 10:38:11,091 INFO L87 Difference]: Start difference. First operand 141 states and 345 transitions. Second operand 15 states. [2020-10-09 10:38:11,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:38:11,405 INFO L93 Difference]: Finished difference Result 205 states and 471 transitions. [2020-10-09 10:38:11,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-09 10:38:11,406 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-09 10:38:11,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:38:11,407 INFO L225 Difference]: With dead ends: 205 [2020-10-09 10:38:11,407 INFO L226 Difference]: Without dead ends: 203 [2020-10-09 10:38:11,407 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=162, Invalid=344, Unknown=0, NotChecked=0, Total=506 [2020-10-09 10:38:11,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2020-10-09 10:38:11,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 142. [2020-10-09 10:38:11,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-10-09 10:38:11,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 347 transitions. [2020-10-09 10:38:11,411 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 347 transitions. Word has length 13 [2020-10-09 10:38:11,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:38:11,412 INFO L481 AbstractCegarLoop]: Abstraction has 142 states and 347 transitions. [2020-10-09 10:38:11,412 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-09 10:38:11,412 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 347 transitions. [2020-10-09 10:38:11,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-09 10:38:11,412 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:38:11,412 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:38:11,621 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120,114 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:38:11,622 INFO L429 AbstractCegarLoop]: === Iteration 122 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:38:11,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:38:11,622 INFO L82 PathProgramCache]: Analyzing trace with hash 896929423, now seen corresponding path program 96 times [2020-10-09 10:38:11,622 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:38:11,623 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489279708] [2020-10-09 10:38:11,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:38:11,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:38:11,709 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:38:11,710 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489279708] [2020-10-09 10:38:11,710 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [893112774] [2020-10-09 10:38:11,710 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 115 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 115 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:38:11,749 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-09 10:38:11,749 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:38:11,750 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-09 10:38:11,750 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:38:11,883 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:38:11,883 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:38:11,883 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-09 10:38:11,883 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772377780] [2020-10-09 10:38:11,884 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-09 10:38:11,884 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:38:11,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-09 10:38:11,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2020-10-09 10:38:11,885 INFO L87 Difference]: Start difference. First operand 142 states and 347 transitions. Second operand 15 states. [2020-10-09 10:38:12,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:38:12,162 INFO L93 Difference]: Finished difference Result 201 states and 465 transitions. [2020-10-09 10:38:12,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-09 10:38:12,163 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-09 10:38:12,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:38:12,164 INFO L225 Difference]: With dead ends: 201 [2020-10-09 10:38:12,164 INFO L226 Difference]: Without dead ends: 199 [2020-10-09 10:38:12,164 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=161, Invalid=345, Unknown=0, NotChecked=0, Total=506 [2020-10-09 10:38:12,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2020-10-09 10:38:12,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 137. [2020-10-09 10:38:12,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2020-10-09 10:38:12,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 334 transitions. [2020-10-09 10:38:12,166 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 334 transitions. Word has length 13 [2020-10-09 10:38:12,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:38:12,167 INFO L481 AbstractCegarLoop]: Abstraction has 137 states and 334 transitions. [2020-10-09 10:38:12,167 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-09 10:38:12,167 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 334 transitions. [2020-10-09 10:38:12,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-09 10:38:12,167 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:38:12,167 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:38:12,367 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121,115 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:38:12,368 INFO L429 AbstractCegarLoop]: === Iteration 123 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:38:12,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:38:12,368 INFO L82 PathProgramCache]: Analyzing trace with hash 1534129122, now seen corresponding path program 97 times [2020-10-09 10:38:12,369 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:38:12,369 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972906607] [2020-10-09 10:38:12,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:38:12,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:38:12,449 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:38:12,449 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972906607] [2020-10-09 10:38:12,449 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1515926565] [2020-10-09 10:38:12,450 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 116 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 116 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:38:12,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:38:12,488 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-09 10:38:12,488 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:38:12,626 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:38:12,626 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:38:12,626 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-09 10:38:12,627 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646724554] [2020-10-09 10:38:12,627 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-09 10:38:12,627 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:38:12,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-09 10:38:12,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2020-10-09 10:38:12,628 INFO L87 Difference]: Start difference. First operand 137 states and 334 transitions. Second operand 15 states. [2020-10-09 10:38:12,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:38:12,878 INFO L93 Difference]: Finished difference Result 194 states and 449 transitions. [2020-10-09 10:38:12,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-09 10:38:12,884 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-09 10:38:12,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:38:12,884 INFO L225 Difference]: With dead ends: 194 [2020-10-09 10:38:12,885 INFO L226 Difference]: Without dead ends: 192 [2020-10-09 10:38:12,885 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=132, Invalid=330, Unknown=0, NotChecked=0, Total=462 [2020-10-09 10:38:12,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2020-10-09 10:38:12,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 140. [2020-10-09 10:38:12,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-10-09 10:38:12,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 345 transitions. [2020-10-09 10:38:12,888 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 345 transitions. Word has length 13 [2020-10-09 10:38:12,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:38:12,888 INFO L481 AbstractCegarLoop]: Abstraction has 140 states and 345 transitions. [2020-10-09 10:38:12,888 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-09 10:38:12,889 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 345 transitions. [2020-10-09 10:38:12,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-09 10:38:12,889 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:38:12,889 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:38:13,098 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 116 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable122 [2020-10-09 10:38:13,098 INFO L429 AbstractCegarLoop]: === Iteration 124 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:38:13,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:38:13,099 INFO L82 PathProgramCache]: Analyzing trace with hash 1534130083, now seen corresponding path program 98 times [2020-10-09 10:38:13,099 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:38:13,099 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589308184] [2020-10-09 10:38:13,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:38:13,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:38:13,173 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:38:13,173 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589308184] [2020-10-09 10:38:13,173 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1022481776] [2020-10-09 10:38:13,173 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 117 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 117 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:38:13,211 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-09 10:38:13,212 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:38:13,212 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-09 10:38:13,213 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:38:13,367 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:38:13,367 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:38:13,367 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-09 10:38:13,368 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123947778] [2020-10-09 10:38:13,368 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-09 10:38:13,368 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:38:13,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-09 10:38:13,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2020-10-09 10:38:13,368 INFO L87 Difference]: Start difference. First operand 140 states and 345 transitions. Second operand 15 states. [2020-10-09 10:38:13,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:38:13,712 INFO L93 Difference]: Finished difference Result 209 states and 478 transitions. [2020-10-09 10:38:13,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-09 10:38:13,713 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-09 10:38:13,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:38:13,713 INFO L225 Difference]: With dead ends: 209 [2020-10-09 10:38:13,713 INFO L226 Difference]: Without dead ends: 207 [2020-10-09 10:38:13,714 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=156, Invalid=396, Unknown=0, NotChecked=0, Total=552 [2020-10-09 10:38:13,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2020-10-09 10:38:13,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 140. [2020-10-09 10:38:13,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-10-09 10:38:13,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 344 transitions. [2020-10-09 10:38:13,718 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 344 transitions. Word has length 13 [2020-10-09 10:38:13,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:38:13,718 INFO L481 AbstractCegarLoop]: Abstraction has 140 states and 344 transitions. [2020-10-09 10:38:13,718 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-09 10:38:13,718 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 344 transitions. [2020-10-09 10:38:13,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-09 10:38:13,719 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:38:13,719 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:38:13,926 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123,117 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:38:13,927 INFO L429 AbstractCegarLoop]: === Iteration 125 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:38:13,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:38:13,927 INFO L82 PathProgramCache]: Analyzing trace with hash 1534158913, now seen corresponding path program 99 times [2020-10-09 10:38:13,927 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:38:13,928 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121455595] [2020-10-09 10:38:13,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:38:13,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:38:14,007 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:38:14,007 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121455595] [2020-10-09 10:38:14,008 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [759345018] [2020-10-09 10:38:14,008 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 118 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 118 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:38:14,057 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-09 10:38:14,058 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:38:14,059 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-09 10:38:14,059 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:38:14,201 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:38:14,202 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:38:14,202 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-09 10:38:14,202 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286808126] [2020-10-09 10:38:14,202 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-09 10:38:14,202 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:38:14,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-09 10:38:14,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2020-10-09 10:38:14,203 INFO L87 Difference]: Start difference. First operand 140 states and 344 transitions. Second operand 15 states. [2020-10-09 10:38:14,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:38:14,528 INFO L93 Difference]: Finished difference Result 202 states and 464 transitions. [2020-10-09 10:38:14,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-09 10:38:14,529 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-09 10:38:14,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:38:14,530 INFO L225 Difference]: With dead ends: 202 [2020-10-09 10:38:14,530 INFO L226 Difference]: Without dead ends: 200 [2020-10-09 10:38:14,530 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=169, Invalid=431, Unknown=0, NotChecked=0, Total=600 [2020-10-09 10:38:14,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2020-10-09 10:38:14,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 139. [2020-10-09 10:38:14,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2020-10-09 10:38:14,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 341 transitions. [2020-10-09 10:38:14,532 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 341 transitions. Word has length 13 [2020-10-09 10:38:14,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:38:14,533 INFO L481 AbstractCegarLoop]: Abstraction has 139 states and 341 transitions. [2020-10-09 10:38:14,533 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-09 10:38:14,533 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 341 transitions. [2020-10-09 10:38:14,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-09 10:38:14,533 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:38:14,533 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:38:14,733 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 118 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable124 [2020-10-09 10:38:14,734 INFO L429 AbstractCegarLoop]: === Iteration 126 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:38:14,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:38:14,734 INFO L82 PathProgramCache]: Analyzing trace with hash 1554684912, now seen corresponding path program 100 times [2020-10-09 10:38:14,735 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:38:14,735 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272283054] [2020-10-09 10:38:14,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:38:14,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:38:14,825 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:38:14,826 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272283054] [2020-10-09 10:38:14,826 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1232064952] [2020-10-09 10:38:14,826 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 119 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 119 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:38:14,864 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-09 10:38:14,865 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:38:14,865 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-09 10:38:14,866 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:38:15,012 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:38:15,013 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:38:15,013 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-09 10:38:15,013 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989368283] [2020-10-09 10:38:15,014 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-09 10:38:15,014 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:38:15,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-09 10:38:15,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2020-10-09 10:38:15,014 INFO L87 Difference]: Start difference. First operand 139 states and 341 transitions. Second operand 15 states. [2020-10-09 10:38:15,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:38:15,379 INFO L93 Difference]: Finished difference Result 201 states and 465 transitions. [2020-10-09 10:38:15,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-09 10:38:15,379 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-09 10:38:15,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:38:15,380 INFO L225 Difference]: With dead ends: 201 [2020-10-09 10:38:15,380 INFO L226 Difference]: Without dead ends: 199 [2020-10-09 10:38:15,380 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=177, Invalid=423, Unknown=0, NotChecked=0, Total=600 [2020-10-09 10:38:15,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2020-10-09 10:38:15,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 141. [2020-10-09 10:38:15,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-10-09 10:38:15,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 349 transitions. [2020-10-09 10:38:15,383 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 349 transitions. Word has length 13 [2020-10-09 10:38:15,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:38:15,383 INFO L481 AbstractCegarLoop]: Abstraction has 141 states and 349 transitions. [2020-10-09 10:38:15,383 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-09 10:38:15,383 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 349 transitions. [2020-10-09 10:38:15,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-09 10:38:15,384 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:38:15,384 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:38:15,585 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 119 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable125 [2020-10-09 10:38:15,586 INFO L429 AbstractCegarLoop]: === Iteration 127 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:38:15,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:38:15,586 INFO L82 PathProgramCache]: Analyzing trace with hash 1554685873, now seen corresponding path program 101 times [2020-10-09 10:38:15,586 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:38:15,587 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675595632] [2020-10-09 10:38:15,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:38:15,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:38:15,659 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:38:15,660 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675595632] [2020-10-09 10:38:15,660 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [607523583] [2020-10-09 10:38:15,660 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 120 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 120 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:38:15,696 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-09 10:38:15,697 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:38:15,698 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-09 10:38:15,698 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:38:15,837 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:38:15,838 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:38:15,838 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-09 10:38:15,838 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443480342] [2020-10-09 10:38:15,838 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-09 10:38:15,839 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:38:15,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-09 10:38:15,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2020-10-09 10:38:15,839 INFO L87 Difference]: Start difference. First operand 141 states and 349 transitions. Second operand 15 states. [2020-10-09 10:38:16,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:38:16,262 INFO L93 Difference]: Finished difference Result 215 states and 495 transitions. [2020-10-09 10:38:16,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-09 10:38:16,262 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-09 10:38:16,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:38:16,263 INFO L225 Difference]: With dead ends: 215 [2020-10-09 10:38:16,263 INFO L226 Difference]: Without dead ends: 213 [2020-10-09 10:38:16,263 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=218, Invalid=538, Unknown=0, NotChecked=0, Total=756 [2020-10-09 10:38:16,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2020-10-09 10:38:16,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 142. [2020-10-09 10:38:16,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-10-09 10:38:16,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 353 transitions. [2020-10-09 10:38:16,268 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 353 transitions. Word has length 13 [2020-10-09 10:38:16,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:38:16,269 INFO L481 AbstractCegarLoop]: Abstraction has 142 states and 353 transitions. [2020-10-09 10:38:16,269 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-09 10:38:16,269 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 353 transitions. [2020-10-09 10:38:16,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-09 10:38:16,269 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:38:16,269 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:38:16,471 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126,120 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:38:16,472 INFO L429 AbstractCegarLoop]: === Iteration 128 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:38:16,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:38:16,473 INFO L82 PathProgramCache]: Analyzing trace with hash 1555348002, now seen corresponding path program 102 times [2020-10-09 10:38:16,473 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:38:16,474 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144009089] [2020-10-09 10:38:16,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:38:16,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:38:16,549 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:38:16,549 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144009089] [2020-10-09 10:38:16,549 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1846171891] [2020-10-09 10:38:16,549 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 121 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 121 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:38:16,586 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-09 10:38:16,586 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:38:16,587 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-09 10:38:16,588 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:38:16,712 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:38:16,712 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:38:16,712 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-09 10:38:16,713 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147612534] [2020-10-09 10:38:16,713 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-09 10:38:16,713 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:38:16,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-09 10:38:16,714 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2020-10-09 10:38:16,714 INFO L87 Difference]: Start difference. First operand 142 states and 353 transitions. Second operand 15 states. [2020-10-09 10:38:17,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:38:17,088 INFO L93 Difference]: Finished difference Result 196 states and 461 transitions. [2020-10-09 10:38:17,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-09 10:38:17,088 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-09 10:38:17,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:38:17,089 INFO L225 Difference]: With dead ends: 196 [2020-10-09 10:38:17,089 INFO L226 Difference]: Without dead ends: 194 [2020-10-09 10:38:17,090 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 163 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=211, Invalid=491, Unknown=0, NotChecked=0, Total=702 [2020-10-09 10:38:17,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2020-10-09 10:38:17,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 144. [2020-10-09 10:38:17,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-10-09 10:38:17,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 360 transitions. [2020-10-09 10:38:17,094 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 360 transitions. Word has length 13 [2020-10-09 10:38:17,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:38:17,094 INFO L481 AbstractCegarLoop]: Abstraction has 144 states and 360 transitions. [2020-10-09 10:38:17,095 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-09 10:38:17,095 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 360 transitions. [2020-10-09 10:38:17,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-09 10:38:17,095 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:38:17,095 INFO L421 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:38:17,297 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127,121 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:38:17,298 INFO L429 AbstractCegarLoop]: === Iteration 129 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:38:17,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:38:17,298 INFO L82 PathProgramCache]: Analyzing trace with hash 1555369361, now seen corresponding path program 103 times [2020-10-09 10:38:17,298 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:38:17,299 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177245678] [2020-10-09 10:38:17,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:38:17,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:38:17,381 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:38:17,381 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177245678] [2020-10-09 10:38:17,381 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2073328565] [2020-10-09 10:38:17,381 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 122 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 122 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:38:17,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:38:17,417 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-09 10:38:17,418 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:38:17,510 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 10:38:17,523 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:38:17,524 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:38:17,524 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-09 10:38:17,524 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938411187] [2020-10-09 10:38:17,524 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-09 10:38:17,524 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:38:17,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-09 10:38:17,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2020-10-09 10:38:17,525 INFO L87 Difference]: Start difference. First operand 144 states and 360 transitions. Second operand 15 states. [2020-10-09 10:38:17,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:38:17,807 INFO L93 Difference]: Finished difference Result 191 states and 460 transitions. [2020-10-09 10:38:17,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-09 10:38:17,808 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-09 10:38:17,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:38:17,808 INFO L225 Difference]: With dead ends: 191 [2020-10-09 10:38:17,808 INFO L226 Difference]: Without dead ends: 186 [2020-10-09 10:38:17,809 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=196, Invalid=404, Unknown=0, NotChecked=0, Total=600 [2020-10-09 10:38:17,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2020-10-09 10:38:17,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 144. [2020-10-09 10:38:17,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-10-09 10:38:17,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 360 transitions. [2020-10-09 10:38:17,812 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 360 transitions. Word has length 13 [2020-10-09 10:38:17,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:38:17,812 INFO L481 AbstractCegarLoop]: Abstraction has 144 states and 360 transitions. [2020-10-09 10:38:17,812 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-09 10:38:17,812 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 360 transitions. [2020-10-09 10:38:17,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-09 10:38:17,813 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:38:17,813 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:38:18,015 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 122 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable128 [2020-10-09 10:38:18,016 INFO L429 AbstractCegarLoop]: === Iteration 130 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:38:18,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:38:18,016 INFO L82 PathProgramCache]: Analyzing trace with hash 1555370322, now seen corresponding path program 104 times [2020-10-09 10:38:18,016 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:38:18,017 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618019236] [2020-10-09 10:38:18,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:38:18,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:38:18,095 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:38:18,095 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618019236] [2020-10-09 10:38:18,096 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [967608759] [2020-10-09 10:38:18,096 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 123 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 123 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:38:18,132 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-09 10:38:18,133 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:38:18,133 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-09 10:38:18,134 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:38:18,247 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-09 10:38:18,280 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:38:18,281 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:38:18,281 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-09 10:38:18,281 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316318637] [2020-10-09 10:38:18,281 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-09 10:38:18,281 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:38:18,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-09 10:38:18,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2020-10-09 10:38:18,282 INFO L87 Difference]: Start difference. First operand 144 states and 360 transitions. Second operand 15 states. [2020-10-09 10:38:18,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:38:18,841 INFO L93 Difference]: Finished difference Result 232 states and 551 transitions. [2020-10-09 10:38:18,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-09 10:38:18,841 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-09 10:38:18,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:38:18,842 INFO L225 Difference]: With dead ends: 232 [2020-10-09 10:38:18,842 INFO L226 Difference]: Without dead ends: 227 [2020-10-09 10:38:18,842 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=280, Invalid=650, Unknown=0, NotChecked=0, Total=930 [2020-10-09 10:38:18,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2020-10-09 10:38:18,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 142. [2020-10-09 10:38:18,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-10-09 10:38:18,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 353 transitions. [2020-10-09 10:38:18,848 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 353 transitions. Word has length 13 [2020-10-09 10:38:18,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:38:18,848 INFO L481 AbstractCegarLoop]: Abstraction has 142 states and 353 transitions. [2020-10-09 10:38:18,849 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-09 10:38:18,849 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 353 transitions. [2020-10-09 10:38:18,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-09 10:38:18,849 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:38:18,849 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:38:19,051 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129,123 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:38:19,052 INFO L429 AbstractCegarLoop]: === Iteration 131 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:38:19,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:38:19,052 INFO L82 PathProgramCache]: Analyzing trace with hash 1555377793, now seen corresponding path program 105 times [2020-10-09 10:38:19,053 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:38:19,053 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742339036] [2020-10-09 10:38:19,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:38:19,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:38:19,129 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:38:19,129 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742339036] [2020-10-09 10:38:19,129 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [512071370] [2020-10-09 10:38:19,129 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 124 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 124 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:38:19,165 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-09 10:38:19,165 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:38:19,166 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-09 10:38:19,166 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:38:19,305 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:38:19,305 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:38:19,306 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-09 10:38:19,306 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255323488] [2020-10-09 10:38:19,306 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-09 10:38:19,306 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:38:19,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-09 10:38:19,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2020-10-09 10:38:19,307 INFO L87 Difference]: Start difference. First operand 142 states and 353 transitions. Second operand 15 states. [2020-10-09 10:38:19,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:38:19,851 INFO L93 Difference]: Finished difference Result 222 states and 521 transitions. [2020-10-09 10:38:19,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-09 10:38:19,852 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-09 10:38:19,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:38:19,852 INFO L225 Difference]: With dead ends: 222 [2020-10-09 10:38:19,853 INFO L226 Difference]: Without dead ends: 220 [2020-10-09 10:38:19,853 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 240 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=277, Invalid=653, Unknown=0, NotChecked=0, Total=930 [2020-10-09 10:38:19,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2020-10-09 10:38:19,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 144. [2020-10-09 10:38:19,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-10-09 10:38:19,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 360 transitions. [2020-10-09 10:38:19,857 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 360 transitions. Word has length 13 [2020-10-09 10:38:19,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:38:19,857 INFO L481 AbstractCegarLoop]: Abstraction has 144 states and 360 transitions. [2020-10-09 10:38:19,857 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-09 10:38:19,857 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 360 transitions. [2020-10-09 10:38:19,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-09 10:38:19,857 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:38:19,857 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:38:20,058 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130,124 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:38:20,058 INFO L429 AbstractCegarLoop]: === Iteration 132 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:38:20,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:38:20,059 INFO L82 PathProgramCache]: Analyzing trace with hash 1555399152, now seen corresponding path program 106 times [2020-10-09 10:38:20,059 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:38:20,059 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547464143] [2020-10-09 10:38:20,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:38:20,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:38:20,143 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:38:20,144 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547464143] [2020-10-09 10:38:20,144 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [885521377] [2020-10-09 10:38:20,144 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 125 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 125 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:38:20,186 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-09 10:38:20,186 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:38:20,187 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-09 10:38:20,188 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:38:20,311 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 10:38:20,344 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:38:20,345 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:38:20,345 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-09 10:38:20,345 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131984163] [2020-10-09 10:38:20,346 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-09 10:38:20,346 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:38:20,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-09 10:38:20,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2020-10-09 10:38:20,347 INFO L87 Difference]: Start difference. First operand 144 states and 360 transitions. Second operand 15 states. [2020-10-09 10:38:21,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:38:21,126 INFO L93 Difference]: Finished difference Result 254 states and 608 transitions. [2020-10-09 10:38:21,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-09 10:38:21,127 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-09 10:38:21,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:38:21,128 INFO L225 Difference]: With dead ends: 254 [2020-10-09 10:38:21,128 INFO L226 Difference]: Without dead ends: 246 [2020-10-09 10:38:21,129 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 285 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=345, Invalid=777, Unknown=0, NotChecked=0, Total=1122 [2020-10-09 10:38:21,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2020-10-09 10:38:21,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 146. [2020-10-09 10:38:21,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-10-09 10:38:21,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 370 transitions. [2020-10-09 10:38:21,132 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 370 transitions. Word has length 13 [2020-10-09 10:38:21,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:38:21,133 INFO L481 AbstractCegarLoop]: Abstraction has 146 states and 370 transitions. [2020-10-09 10:38:21,133 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-09 10:38:21,133 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 370 transitions. [2020-10-09 10:38:21,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-09 10:38:21,133 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:38:21,133 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:38:21,343 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131,125 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:38:21,343 INFO L429 AbstractCegarLoop]: === Iteration 133 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:38:21,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:38:21,344 INFO L82 PathProgramCache]: Analyzing trace with hash 1555400113, now seen corresponding path program 107 times [2020-10-09 10:38:21,344 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:38:21,344 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932185790] [2020-10-09 10:38:21,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:38:21,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:38:21,424 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:38:21,424 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932185790] [2020-10-09 10:38:21,425 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1510124895] [2020-10-09 10:38:21,425 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 126 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 126 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:38:21,464 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-09 10:38:21,465 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:38:21,465 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-09 10:38:21,466 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:38:21,588 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-09 10:38:21,610 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:38:21,610 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:38:21,611 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-09 10:38:21,611 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106078964] [2020-10-09 10:38:21,611 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-09 10:38:21,611 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:38:21,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-09 10:38:21,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-10-09 10:38:21,612 INFO L87 Difference]: Start difference. First operand 146 states and 370 transitions. Second operand 15 states. [2020-10-09 10:38:22,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:38:22,402 INFO L93 Difference]: Finished difference Result 246 states and 581 transitions. [2020-10-09 10:38:22,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-09 10:38:22,403 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-09 10:38:22,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:38:22,404 INFO L225 Difference]: With dead ends: 246 [2020-10-09 10:38:22,405 INFO L226 Difference]: Without dead ends: 238 [2020-10-09 10:38:22,405 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 348 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=384, Invalid=876, Unknown=0, NotChecked=0, Total=1260 [2020-10-09 10:38:22,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2020-10-09 10:38:22,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 139. [2020-10-09 10:38:22,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2020-10-09 10:38:22,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 344 transitions. [2020-10-09 10:38:22,408 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 344 transitions. Word has length 13 [2020-10-09 10:38:22,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:38:22,409 INFO L481 AbstractCegarLoop]: Abstraction has 139 states and 344 transitions. [2020-10-09 10:38:22,409 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-09 10:38:22,409 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 344 transitions. [2020-10-09 10:38:22,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-09 10:38:22,409 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:38:22,409 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:38:22,618 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 126 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable132 [2020-10-09 10:38:22,618 INFO L429 AbstractCegarLoop]: === Iteration 134 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:38:22,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:38:22,619 INFO L82 PathProgramCache]: Analyzing trace with hash 1555608433, now seen corresponding path program 108 times [2020-10-09 10:38:22,619 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:38:22,619 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406559741] [2020-10-09 10:38:22,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:38:22,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:38:22,694 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:38:22,695 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406559741] [2020-10-09 10:38:22,695 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1715120289] [2020-10-09 10:38:22,695 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 127 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 127 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:38:22,733 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-09 10:38:22,733 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:38:22,734 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-09 10:38:22,735 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:38:22,876 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:38:22,876 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:38:22,876 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-09 10:38:22,877 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427420462] [2020-10-09 10:38:22,877 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-09 10:38:22,877 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:38:22,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-09 10:38:22,877 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2020-10-09 10:38:22,878 INFO L87 Difference]: Start difference. First operand 139 states and 344 transitions. Second operand 15 states. [2020-10-09 10:38:23,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:38:23,292 INFO L93 Difference]: Finished difference Result 208 states and 483 transitions. [2020-10-09 10:38:23,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-09 10:38:23,293 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-09 10:38:23,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:38:23,293 INFO L225 Difference]: With dead ends: 208 [2020-10-09 10:38:23,293 INFO L226 Difference]: Without dead ends: 206 [2020-10-09 10:38:23,294 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=205, Invalid=497, Unknown=0, NotChecked=0, Total=702 [2020-10-09 10:38:23,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2020-10-09 10:38:23,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 136. [2020-10-09 10:38:23,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-10-09 10:38:23,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 337 transitions. [2020-10-09 10:38:23,296 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 337 transitions. Word has length 13 [2020-10-09 10:38:23,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:38:23,297 INFO L481 AbstractCegarLoop]: Abstraction has 136 states and 337 transitions. [2020-10-09 10:38:23,297 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-09 10:38:23,297 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 337 transitions. [2020-10-09 10:38:23,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-09 10:38:23,297 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:38:23,297 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:38:23,498 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 127 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable133 [2020-10-09 10:38:23,498 INFO L429 AbstractCegarLoop]: === Iteration 135 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:38:23,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:38:23,498 INFO L82 PathProgramCache]: Analyzing trace with hash 1556271523, now seen corresponding path program 109 times [2020-10-09 10:38:23,499 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:38:23,499 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662788403] [2020-10-09 10:38:23,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:38:23,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:38:23,575 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:38:23,575 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662788403] [2020-10-09 10:38:23,575 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1785164745] [2020-10-09 10:38:23,576 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 128 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 128 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:38:23,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:38:23,615 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-09 10:38:23,616 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:38:23,740 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:38:23,741 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:38:23,741 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-09 10:38:23,741 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718327180] [2020-10-09 10:38:23,741 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-09 10:38:23,741 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:38:23,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-09 10:38:23,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2020-10-09 10:38:23,742 INFO L87 Difference]: Start difference. First operand 136 states and 337 transitions. Second operand 15 states. [2020-10-09 10:38:24,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:38:24,276 INFO L93 Difference]: Finished difference Result 215 states and 507 transitions. [2020-10-09 10:38:24,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-09 10:38:24,276 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-09 10:38:24,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:38:24,277 INFO L225 Difference]: With dead ends: 215 [2020-10-09 10:38:24,277 INFO L226 Difference]: Without dead ends: 213 [2020-10-09 10:38:24,277 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=265, Invalid=605, Unknown=0, NotChecked=0, Total=870 [2020-10-09 10:38:24,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2020-10-09 10:38:24,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 137. [2020-10-09 10:38:24,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2020-10-09 10:38:24,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 341 transitions. [2020-10-09 10:38:24,281 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 341 transitions. Word has length 13 [2020-10-09 10:38:24,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:38:24,281 INFO L481 AbstractCegarLoop]: Abstraction has 137 states and 341 transitions. [2020-10-09 10:38:24,281 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-09 10:38:24,281 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 341 transitions. [2020-10-09 10:38:24,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-09 10:38:24,282 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:38:24,282 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:38:24,482 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 128 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable134 [2020-10-09 10:38:24,482 INFO L429 AbstractCegarLoop]: === Iteration 136 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:38:24,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:38:24,483 INFO L82 PathProgramCache]: Analyzing trace with hash 1556292882, now seen corresponding path program 110 times [2020-10-09 10:38:24,483 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:38:24,483 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647642666] [2020-10-09 10:38:24,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:38:24,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:38:24,567 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:38:24,568 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647642666] [2020-10-09 10:38:24,568 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [333726060] [2020-10-09 10:38:24,568 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 129 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 129 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:38:24,611 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-09 10:38:24,612 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:38:24,613 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-09 10:38:24,615 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:38:24,715 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 10:38:24,726 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:38:24,726 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:38:24,726 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-09 10:38:24,727 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583002176] [2020-10-09 10:38:24,727 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-09 10:38:24,727 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:38:24,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-09 10:38:24,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-10-09 10:38:24,728 INFO L87 Difference]: Start difference. First operand 137 states and 341 transitions. Second operand 15 states. [2020-10-09 10:38:25,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:38:25,318 INFO L93 Difference]: Finished difference Result 236 states and 563 transitions. [2020-10-09 10:38:25,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-09 10:38:25,318 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-09 10:38:25,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:38:25,319 INFO L225 Difference]: With dead ends: 236 [2020-10-09 10:38:25,319 INFO L226 Difference]: Without dead ends: 228 [2020-10-09 10:38:25,319 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 296 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=343, Invalid=779, Unknown=0, NotChecked=0, Total=1122 [2020-10-09 10:38:25,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2020-10-09 10:38:25,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 137. [2020-10-09 10:38:25,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2020-10-09 10:38:25,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 341 transitions. [2020-10-09 10:38:25,322 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 341 transitions. Word has length 13 [2020-10-09 10:38:25,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:38:25,323 INFO L481 AbstractCegarLoop]: Abstraction has 137 states and 341 transitions. [2020-10-09 10:38:25,323 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-09 10:38:25,323 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 341 transitions. [2020-10-09 10:38:25,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-09 10:38:25,323 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:38:25,323 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:38:25,524 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 129 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable135 [2020-10-09 10:38:25,524 INFO L429 AbstractCegarLoop]: === Iteration 137 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:38:25,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:38:25,525 INFO L82 PathProgramCache]: Analyzing trace with hash 1556293843, now seen corresponding path program 111 times [2020-10-09 10:38:25,525 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:38:25,525 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514770291] [2020-10-09 10:38:25,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:38:25,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:38:25,603 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:38:25,603 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514770291] [2020-10-09 10:38:25,604 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1219267338] [2020-10-09 10:38:25,604 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 130 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 130 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:38:25,647 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-09 10:38:25,648 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:38:25,649 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-09 10:38:25,649 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:38:25,764 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-09 10:38:25,773 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:38:25,773 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:38:25,773 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-09 10:38:25,774 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706130890] [2020-10-09 10:38:25,774 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-09 10:38:25,774 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:38:25,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-09 10:38:25,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2020-10-09 10:38:25,774 INFO L87 Difference]: Start difference. First operand 137 states and 341 transitions. Second operand 15 states. [2020-10-09 10:38:26,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:38:26,421 INFO L93 Difference]: Finished difference Result 241 states and 576 transitions. [2020-10-09 10:38:26,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-09 10:38:26,422 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-09 10:38:26,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:38:26,422 INFO L225 Difference]: With dead ends: 241 [2020-10-09 10:38:26,423 INFO L226 Difference]: Without dead ends: 233 [2020-10-09 10:38:26,423 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 270 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=349, Invalid=773, Unknown=0, NotChecked=0, Total=1122 [2020-10-09 10:38:26,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2020-10-09 10:38:26,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 133. [2020-10-09 10:38:26,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2020-10-09 10:38:26,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 324 transitions. [2020-10-09 10:38:26,425 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 324 transitions. Word has length 13 [2020-10-09 10:38:26,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:38:26,426 INFO L481 AbstractCegarLoop]: Abstraction has 133 states and 324 transitions. [2020-10-09 10:38:26,426 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-09 10:38:26,426 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 324 transitions. [2020-10-09 10:38:26,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-09 10:38:26,426 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:38:26,426 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:38:26,634 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 130 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable136 [2020-10-09 10:38:26,635 INFO L429 AbstractCegarLoop]: === Iteration 138 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:38:26,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:38:26,635 INFO L82 PathProgramCache]: Analyzing trace with hash 1556322673, now seen corresponding path program 112 times [2020-10-09 10:38:26,635 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:38:26,636 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639269364] [2020-10-09 10:38:26,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:38:26,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:38:26,721 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:38:26,722 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639269364] [2020-10-09 10:38:26,722 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [148339388] [2020-10-09 10:38:26,722 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 131 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 131 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:38:26,765 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-09 10:38:26,766 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:38:26,766 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-09 10:38:26,767 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:38:26,883 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 10:38:26,896 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:38:26,896 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:38:26,896 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-09 10:38:26,897 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055631256] [2020-10-09 10:38:26,897 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-09 10:38:26,897 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:38:26,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-09 10:38:26,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2020-10-09 10:38:26,898 INFO L87 Difference]: Start difference. First operand 133 states and 324 transitions. Second operand 15 states. [2020-10-09 10:38:27,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:38:27,524 INFO L93 Difference]: Finished difference Result 232 states and 545 transitions. [2020-10-09 10:38:27,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-09 10:38:27,524 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-09 10:38:27,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:38:27,525 INFO L225 Difference]: With dead ends: 232 [2020-10-09 10:38:27,525 INFO L226 Difference]: Without dead ends: 224 [2020-10-09 10:38:27,526 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 261 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=325, Invalid=731, Unknown=0, NotChecked=0, Total=1056 [2020-10-09 10:38:27,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2020-10-09 10:38:27,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 130. [2020-10-09 10:38:27,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-10-09 10:38:27,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 305 transitions. [2020-10-09 10:38:27,529 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 305 transitions. Word has length 13 [2020-10-09 10:38:27,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:38:27,529 INFO L481 AbstractCegarLoop]: Abstraction has 130 states and 305 transitions. [2020-10-09 10:38:27,529 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-09 10:38:27,529 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 305 transitions. [2020-10-09 10:38:27,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-09 10:38:27,530 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:38:27,530 INFO L421 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:38:27,730 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137,131 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:38:27,731 INFO L429 AbstractCegarLoop]: === Iteration 139 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:38:27,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:38:27,731 INFO L82 PathProgramCache]: Analyzing trace with hash 1725446472, now seen corresponding path program 6 times [2020-10-09 10:38:27,731 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:38:27,732 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758153800] [2020-10-09 10:38:27,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:38:27,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:38:27,840 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:38:27,840 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758153800] [2020-10-09 10:38:27,841 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1815456236] [2020-10-09 10:38:27,841 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 132 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 132 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:38:27,879 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2020-10-09 10:38:27,880 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:38:27,880 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-09 10:38:27,881 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:38:27,975 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:38:27,975 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-10-09 10:38:27,976 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 16 [2020-10-09 10:38:27,976 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772604493] [2020-10-09 10:38:27,976 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-09 10:38:27,976 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:38:27,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-09 10:38:27,976 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-09 10:38:27,977 INFO L87 Difference]: Start difference. First operand 130 states and 305 transitions. Second operand 8 states. [2020-10-09 10:38:28,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:38:28,003 INFO L93 Difference]: Finished difference Result 195 states and 513 transitions. [2020-10-09 10:38:28,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-09 10:38:28,004 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 13 [2020-10-09 10:38:28,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:38:28,005 INFO L225 Difference]: With dead ends: 195 [2020-10-09 10:38:28,005 INFO L226 Difference]: Without dead ends: 188 [2020-10-09 10:38:28,005 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-09 10:38:28,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2020-10-09 10:38:28,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 188. [2020-10-09 10:38:28,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 188 states. [2020-10-09 10:38:28,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 500 transitions. [2020-10-09 10:38:28,009 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 500 transitions. Word has length 13 [2020-10-09 10:38:28,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:38:28,009 INFO L481 AbstractCegarLoop]: Abstraction has 188 states and 500 transitions. [2020-10-09 10:38:28,009 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-09 10:38:28,009 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 500 transitions. [2020-10-09 10:38:28,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-09 10:38:28,010 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:38:28,010 INFO L421 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:38:28,225 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 132 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable138 [2020-10-09 10:38:28,225 INFO L429 AbstractCegarLoop]: === Iteration 140 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:38:28,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:38:28,226 INFO L82 PathProgramCache]: Analyzing trace with hash -1934382410, now seen corresponding path program 21 times [2020-10-09 10:38:28,226 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:38:28,227 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209793846] [2020-10-09 10:38:28,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:38:28,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:38:28,428 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:38:28,428 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209793846] [2020-10-09 10:38:28,429 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [991472908] [2020-10-09 10:38:28,429 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 133 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 133 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:38:28,501 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-10-09 10:38:28,501 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:38:28,503 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:38:28,504 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:38:28,715 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:38:28,715 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:38:28,715 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:38:28,715 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950652274] [2020-10-09 10:38:28,716 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:38:28,716 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:38:28,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:38:28,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=189, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:38:28,716 INFO L87 Difference]: Start difference. First operand 188 states and 500 transitions. Second operand 17 states. [2020-10-09 10:38:28,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:38:28,790 INFO L93 Difference]: Finished difference Result 249 states and 638 transitions. [2020-10-09 10:38:28,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-09 10:38:28,791 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 13 [2020-10-09 10:38:28,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:38:28,792 INFO L225 Difference]: With dead ends: 249 [2020-10-09 10:38:28,792 INFO L226 Difference]: Without dead ends: 241 [2020-10-09 10:38:28,792 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=83, Invalid=189, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:38:28,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2020-10-09 10:38:28,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 197. [2020-10-09 10:38:28,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 197 states. [2020-10-09 10:38:28,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 521 transitions. [2020-10-09 10:38:28,796 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 521 transitions. Word has length 13 [2020-10-09 10:38:28,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:38:28,797 INFO L481 AbstractCegarLoop]: Abstraction has 197 states and 521 transitions. [2020-10-09 10:38:28,797 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:38:28,797 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 521 transitions. [2020-10-09 10:38:28,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-09 10:38:28,797 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:38:28,797 INFO L421 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:38:29,006 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 133 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable139 [2020-10-09 10:38:29,007 INFO L429 AbstractCegarLoop]: === Iteration 141 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:38:29,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:38:29,007 INFO L82 PathProgramCache]: Analyzing trace with hash 1413108102, now seen corresponding path program 22 times [2020-10-09 10:38:29,007 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:38:29,008 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066358689] [2020-10-09 10:38:29,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:38:29,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:38:29,161 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:38:29,161 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066358689] [2020-10-09 10:38:29,161 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [510340996] [2020-10-09 10:38:29,161 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 134 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 134 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:38:29,199 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-09 10:38:29,200 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:38:29,200 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-09 10:38:29,201 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:38:29,282 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:38:29,283 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-10-09 10:38:29,283 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 16 [2020-10-09 10:38:29,283 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410846979] [2020-10-09 10:38:29,283 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-09 10:38:29,283 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:38:29,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-09 10:38:29,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2020-10-09 10:38:29,284 INFO L87 Difference]: Start difference. First operand 197 states and 521 transitions. Second operand 8 states. [2020-10-09 10:38:29,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:38:29,311 INFO L93 Difference]: Finished difference Result 278 states and 705 transitions. [2020-10-09 10:38:29,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-09 10:38:29,311 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 13 [2020-10-09 10:38:29,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:38:29,312 INFO L225 Difference]: With dead ends: 278 [2020-10-09 10:38:29,312 INFO L226 Difference]: Without dead ends: 248 [2020-10-09 10:38:29,313 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2020-10-09 10:38:29,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2020-10-09 10:38:29,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 240. [2020-10-09 10:38:29,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 240 states. [2020-10-09 10:38:29,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 626 transitions. [2020-10-09 10:38:29,316 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 626 transitions. Word has length 13 [2020-10-09 10:38:29,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:38:29,316 INFO L481 AbstractCegarLoop]: Abstraction has 240 states and 626 transitions. [2020-10-09 10:38:29,316 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-09 10:38:29,316 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 626 transitions. [2020-10-09 10:38:29,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:38:29,317 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:38:29,317 INFO L421 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:38:29,525 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140,134 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:38:29,526 INFO L429 AbstractCegarLoop]: === Iteration 142 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:38:29,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:38:29,526 INFO L82 PathProgramCache]: Analyzing trace with hash 2094057644, now seen corresponding path program 113 times [2020-10-09 10:38:29,526 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:38:29,527 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465154627] [2020-10-09 10:38:29,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:38:29,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:38:29,659 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:38:29,660 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465154627] [2020-10-09 10:38:29,660 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [503593784] [2020-10-09 10:38:29,660 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 135 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 135 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:38:29,723 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-09 10:38:29,724 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:38:29,725 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:38:29,725 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:38:29,989 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:38:29,989 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:38:29,990 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:38:29,990 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849366502] [2020-10-09 10:38:29,990 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:38:29,991 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:38:29,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:38:29,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=189, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:38:29,991 INFO L87 Difference]: Start difference. First operand 240 states and 626 transitions. Second operand 17 states. [2020-10-09 10:38:30,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:38:30,085 INFO L93 Difference]: Finished difference Result 275 states and 692 transitions. [2020-10-09 10:38:30,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-09 10:38:30,087 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-09 10:38:30,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:38:30,088 INFO L225 Difference]: With dead ends: 275 [2020-10-09 10:38:30,088 INFO L226 Difference]: Without dead ends: 273 [2020-10-09 10:38:30,089 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=83, Invalid=189, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:38:30,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2020-10-09 10:38:30,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 250. [2020-10-09 10:38:30,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 250 states. [2020-10-09 10:38:30,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 654 transitions. [2020-10-09 10:38:30,095 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 654 transitions. Word has length 14 [2020-10-09 10:38:30,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:38:30,096 INFO L481 AbstractCegarLoop]: Abstraction has 250 states and 654 transitions. [2020-10-09 10:38:30,096 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:38:30,096 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 654 transitions. [2020-10-09 10:38:30,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:38:30,096 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:38:30,097 INFO L421 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:38:30,311 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141,135 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:38:30,311 INFO L429 AbstractCegarLoop]: === Iteration 143 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:38:30,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:38:30,312 INFO L82 PathProgramCache]: Analyzing trace with hash 2094058605, now seen corresponding path program 114 times [2020-10-09 10:38:30,312 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:38:30,312 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476442157] [2020-10-09 10:38:30,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:38:30,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:38:30,431 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:38:30,431 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476442157] [2020-10-09 10:38:30,431 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [447831981] [2020-10-09 10:38:30,432 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 136 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 136 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:38:30,471 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-09 10:38:30,471 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:38:30,471 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:38:30,472 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:38:30,654 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:38:30,654 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:38:30,654 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:38:30,655 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800350846] [2020-10-09 10:38:30,655 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:38:30,655 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:38:30,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:38:30,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=189, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:38:30,655 INFO L87 Difference]: Start difference. First operand 250 states and 654 transitions. Second operand 17 states. [2020-10-09 10:38:30,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:38:30,895 INFO L93 Difference]: Finished difference Result 295 states and 735 transitions. [2020-10-09 10:38:30,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-09 10:38:30,896 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-09 10:38:30,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:38:30,898 INFO L225 Difference]: With dead ends: 295 [2020-10-09 10:38:30,898 INFO L226 Difference]: Without dead ends: 292 [2020-10-09 10:38:30,899 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=152, Invalid=310, Unknown=0, NotChecked=0, Total=462 [2020-10-09 10:38:30,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2020-10-09 10:38:30,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 251. [2020-10-09 10:38:30,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 251 states. [2020-10-09 10:38:30,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 657 transitions. [2020-10-09 10:38:30,903 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 657 transitions. Word has length 14 [2020-10-09 10:38:30,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:38:30,904 INFO L481 AbstractCegarLoop]: Abstraction has 251 states and 657 transitions. [2020-10-09 10:38:30,904 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:38:30,904 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 657 transitions. [2020-10-09 10:38:30,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:38:30,904 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:38:30,905 INFO L421 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:38:31,115 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142,136 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:38:31,115 INFO L429 AbstractCegarLoop]: === Iteration 144 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:38:31,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:38:31,116 INFO L82 PathProgramCache]: Analyzing trace with hash 2094087435, now seen corresponding path program 115 times [2020-10-09 10:38:31,116 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:38:31,116 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296001978] [2020-10-09 10:38:31,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:38:31,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:38:31,229 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:38:31,229 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296001978] [2020-10-09 10:38:31,229 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1247619534] [2020-10-09 10:38:31,229 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 137 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 137 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:38:31,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:38:31,277 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:38:31,278 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:38:32,235 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:38:32,235 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:38:32,235 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:38:32,235 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227836651] [2020-10-09 10:38:32,235 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:38:32,235 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:38:32,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:38:32,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:38:32,236 INFO L87 Difference]: Start difference. First operand 251 states and 657 transitions. Second operand 17 states. [2020-10-09 10:38:32,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:38:32,535 INFO L93 Difference]: Finished difference Result 320 states and 793 transitions. [2020-10-09 10:38:32,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-09 10:38:32,536 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-09 10:38:32,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:38:32,537 INFO L225 Difference]: With dead ends: 320 [2020-10-09 10:38:32,537 INFO L226 Difference]: Without dead ends: 316 [2020-10-09 10:38:32,537 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=174, Invalid=332, Unknown=0, NotChecked=0, Total=506 [2020-10-09 10:38:32,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2020-10-09 10:38:32,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 253. [2020-10-09 10:38:32,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 253 states. [2020-10-09 10:38:32,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 663 transitions. [2020-10-09 10:38:32,544 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 663 transitions. Word has length 14 [2020-10-09 10:38:32,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:38:32,545 INFO L481 AbstractCegarLoop]: Abstraction has 253 states and 663 transitions. [2020-10-09 10:38:32,545 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:38:32,545 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 663 transitions. [2020-10-09 10:38:32,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:38:32,545 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:38:32,545 INFO L421 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:38:32,746 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143,137 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:38:32,746 INFO L429 AbstractCegarLoop]: === Iteration 145 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:38:32,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:38:32,746 INFO L82 PathProgramCache]: Analyzing trace with hash 2094981165, now seen corresponding path program 116 times [2020-10-09 10:38:32,747 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:38:32,747 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693757182] [2020-10-09 10:38:32,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:38:32,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:38:32,858 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:38:32,859 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693757182] [2020-10-09 10:38:32,859 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [125077101] [2020-10-09 10:38:32,859 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 138 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 138 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:38:32,905 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-09 10:38:32,905 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:38:32,906 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:38:32,907 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:38:33,176 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:38:33,177 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:38:33,177 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:38:33,177 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937204985] [2020-10-09 10:38:33,177 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:38:33,178 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:38:33,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:38:33,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=185, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:38:33,178 INFO L87 Difference]: Start difference. First operand 253 states and 663 transitions. Second operand 17 states. [2020-10-09 10:38:33,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:38:33,517 INFO L93 Difference]: Finished difference Result 316 states and 781 transitions. [2020-10-09 10:38:33,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-09 10:38:33,518 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-09 10:38:33,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:38:33,518 INFO L225 Difference]: With dead ends: 316 [2020-10-09 10:38:33,519 INFO L226 Difference]: Without dead ends: 313 [2020-10-09 10:38:33,519 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=190, Invalid=362, Unknown=0, NotChecked=0, Total=552 [2020-10-09 10:38:33,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2020-10-09 10:38:33,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 255. [2020-10-09 10:38:33,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 255 states. [2020-10-09 10:38:33,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 669 transitions. [2020-10-09 10:38:33,523 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 669 transitions. Word has length 14 [2020-10-09 10:38:33,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:38:33,523 INFO L481 AbstractCegarLoop]: Abstraction has 255 states and 669 transitions. [2020-10-09 10:38:33,523 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:38:33,523 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 669 transitions. [2020-10-09 10:38:33,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:38:33,524 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:38:33,524 INFO L421 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:38:33,724 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 138 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable144 [2020-10-09 10:38:33,725 INFO L429 AbstractCegarLoop]: === Iteration 146 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:38:33,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:38:33,725 INFO L82 PathProgramCache]: Analyzing trace with hash 2094982126, now seen corresponding path program 117 times [2020-10-09 10:38:33,725 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:38:33,725 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729204742] [2020-10-09 10:38:33,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:38:33,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:38:33,844 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:38:33,844 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729204742] [2020-10-09 10:38:33,844 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1945810782] [2020-10-09 10:38:33,845 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 139 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 139 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:38:33,892 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-09 10:38:33,893 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:38:33,893 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:38:33,894 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:38:37,462 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:38:37,463 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:38:37,463 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:38:37,463 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187798155] [2020-10-09 10:38:37,463 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:38:37,463 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:38:37,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:38:37,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=187, Unknown=1, NotChecked=0, Total=272 [2020-10-09 10:38:37,464 INFO L87 Difference]: Start difference. First operand 255 states and 669 transitions. Second operand 17 states. [2020-10-09 10:38:41,689 WARN L193 SmtUtils]: Spent 4.11 s on a formula simplification. DAG size of input: 41 DAG size of output: 37 [2020-10-09 10:38:41,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:38:41,962 INFO L93 Difference]: Finished difference Result 342 states and 843 transitions. [2020-10-09 10:38:41,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-09 10:38:41,963 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-09 10:38:41,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:38:41,964 INFO L225 Difference]: With dead ends: 342 [2020-10-09 10:38:41,964 INFO L226 Difference]: Without dead ends: 337 [2020-10-09 10:38:41,964 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 7.9s TimeCoverageRelationStatistics Valid=183, Invalid=368, Unknown=1, NotChecked=0, Total=552 [2020-10-09 10:38:41,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2020-10-09 10:38:41,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 256. [2020-10-09 10:38:41,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 256 states. [2020-10-09 10:38:41,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 672 transitions. [2020-10-09 10:38:41,968 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 672 transitions. Word has length 14 [2020-10-09 10:38:41,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:38:41,968 INFO L481 AbstractCegarLoop]: Abstraction has 256 states and 672 transitions. [2020-10-09 10:38:41,968 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:38:41,969 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 672 transitions. [2020-10-09 10:38:41,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:38:41,969 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:38:41,969 INFO L421 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:38:42,169 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 139 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable145 [2020-10-09 10:38:42,170 INFO L429 AbstractCegarLoop]: === Iteration 147 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:38:42,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:38:42,170 INFO L82 PathProgramCache]: Analyzing trace with hash 2095010956, now seen corresponding path program 118 times [2020-10-09 10:38:42,171 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:38:42,171 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943202433] [2020-10-09 10:38:42,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:38:42,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:38:42,279 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:38:42,280 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943202433] [2020-10-09 10:38:42,280 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [273704199] [2020-10-09 10:38:42,280 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 140 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 140 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:38:42,327 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-09 10:38:42,328 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:38:42,328 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:38:42,329 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:38:42,571 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:38:42,571 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:38:42,572 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:38:42,572 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472812263] [2020-10-09 10:38:42,572 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:38:42,572 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:38:42,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:38:42,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=188, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:38:42,573 INFO L87 Difference]: Start difference. First operand 256 states and 672 transitions. Second operand 17 states. [2020-10-09 10:38:42,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:38:42,928 INFO L93 Difference]: Finished difference Result 331 states and 819 transitions. [2020-10-09 10:38:42,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-09 10:38:42,929 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-09 10:38:42,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:38:42,930 INFO L225 Difference]: With dead ends: 331 [2020-10-09 10:38:42,931 INFO L226 Difference]: Without dead ends: 327 [2020-10-09 10:38:42,931 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=190, Invalid=362, Unknown=0, NotChecked=0, Total=552 [2020-10-09 10:38:42,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2020-10-09 10:38:42,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 256. [2020-10-09 10:38:42,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 256 states. [2020-10-09 10:38:42,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 672 transitions. [2020-10-09 10:38:42,936 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 672 transitions. Word has length 14 [2020-10-09 10:38:42,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:38:42,937 INFO L481 AbstractCegarLoop]: Abstraction has 256 states and 672 transitions. [2020-10-09 10:38:42,937 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:38:42,937 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 672 transitions. [2020-10-09 10:38:42,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:38:42,937 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:38:42,938 INFO L421 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:38:43,148 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 140 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable146 [2020-10-09 10:38:43,149 INFO L429 AbstractCegarLoop]: === Iteration 148 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:38:43,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:38:43,149 INFO L82 PathProgramCache]: Analyzing trace with hash 2122686795, now seen corresponding path program 119 times [2020-10-09 10:38:43,149 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:38:43,150 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366196820] [2020-10-09 10:38:43,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:38:43,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:38:43,263 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:38:43,263 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366196820] [2020-10-09 10:38:43,263 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2129813565] [2020-10-09 10:38:43,264 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 141 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 141 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:38:43,301 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-09 10:38:43,301 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:38:43,302 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:38:43,302 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:38:43,476 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:38:43,476 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:38:43,476 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:38:43,476 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305239876] [2020-10-09 10:38:43,477 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:38:43,477 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:38:43,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:38:43,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:38:43,477 INFO L87 Difference]: Start difference. First operand 256 states and 672 transitions. Second operand 17 states. [2020-10-09 10:38:43,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:38:43,822 INFO L93 Difference]: Finished difference Result 321 states and 792 transitions. [2020-10-09 10:38:43,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-09 10:38:43,823 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-09 10:38:43,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:38:43,824 INFO L225 Difference]: With dead ends: 321 [2020-10-09 10:38:43,824 INFO L226 Difference]: Without dead ends: 318 [2020-10-09 10:38:43,824 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=217, Invalid=433, Unknown=0, NotChecked=0, Total=650 [2020-10-09 10:38:43,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2020-10-09 10:38:43,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 259. [2020-10-09 10:38:43,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 259 states. [2020-10-09 10:38:43,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 681 transitions. [2020-10-09 10:38:43,830 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 681 transitions. Word has length 14 [2020-10-09 10:38:43,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:38:43,830 INFO L481 AbstractCegarLoop]: Abstraction has 259 states and 681 transitions. [2020-10-09 10:38:43,830 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:38:43,830 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 681 transitions. [2020-10-09 10:38:43,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:38:43,831 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:38:43,831 INFO L421 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:38:44,040 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 141 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable147 [2020-10-09 10:38:44,041 INFO L429 AbstractCegarLoop]: === Iteration 149 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:38:44,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:38:44,041 INFO L82 PathProgramCache]: Analyzing trace with hash 2122687756, now seen corresponding path program 120 times [2020-10-09 10:38:44,041 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:38:44,042 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868567521] [2020-10-09 10:38:44,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:38:44,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:38:44,153 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:38:44,154 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868567521] [2020-10-09 10:38:44,154 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [577702982] [2020-10-09 10:38:44,154 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 142 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 142 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:38:44,193 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-10-09 10:38:44,193 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:38:44,194 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:38:44,194 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:38:44,375 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:38:44,375 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:38:44,375 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:38:44,375 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2147188100] [2020-10-09 10:38:44,376 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:38:44,376 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:38:44,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:38:44,376 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:38:44,376 INFO L87 Difference]: Start difference. First operand 259 states and 681 transitions. Second operand 17 states. [2020-10-09 10:38:44,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:38:44,751 INFO L93 Difference]: Finished difference Result 348 states and 857 transitions. [2020-10-09 10:38:44,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-09 10:38:44,752 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-09 10:38:44,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:38:44,753 INFO L225 Difference]: With dead ends: 348 [2020-10-09 10:38:44,753 INFO L226 Difference]: Without dead ends: 343 [2020-10-09 10:38:44,754 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=210, Invalid=440, Unknown=0, NotChecked=0, Total=650 [2020-10-09 10:38:44,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2020-10-09 10:38:44,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 260. [2020-10-09 10:38:44,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 260 states. [2020-10-09 10:38:44,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 684 transitions. [2020-10-09 10:38:44,758 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 684 transitions. Word has length 14 [2020-10-09 10:38:44,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:38:44,758 INFO L481 AbstractCegarLoop]: Abstraction has 260 states and 684 transitions. [2020-10-09 10:38:44,758 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:38:44,758 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 684 transitions. [2020-10-09 10:38:44,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:38:44,758 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:38:44,758 INFO L421 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:38:44,959 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 142 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable148 [2020-10-09 10:38:44,959 INFO L429 AbstractCegarLoop]: === Iteration 150 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:38:44,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:38:44,960 INFO L82 PathProgramCache]: Analyzing trace with hash 2122716586, now seen corresponding path program 121 times [2020-10-09 10:38:44,960 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:38:44,960 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082975478] [2020-10-09 10:38:44,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:38:44,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:38:45,077 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:38:45,078 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082975478] [2020-10-09 10:38:45,078 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [86749080] [2020-10-09 10:38:45,078 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 143 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 143 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:38:45,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:38:45,119 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:38:45,119 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:38:45,282 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:38:45,283 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:38:45,283 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:38:45,284 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270047498] [2020-10-09 10:38:45,284 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:38:45,284 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:38:45,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:38:45,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=189, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:38:45,285 INFO L87 Difference]: Start difference. First operand 260 states and 684 transitions. Second operand 17 states. [2020-10-09 10:38:45,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:38:45,618 INFO L93 Difference]: Finished difference Result 349 states and 864 transitions. [2020-10-09 10:38:45,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-09 10:38:45,619 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-09 10:38:45,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:38:45,619 INFO L225 Difference]: With dead ends: 349 [2020-10-09 10:38:45,619 INFO L226 Difference]: Without dead ends: 344 [2020-10-09 10:38:45,620 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=200, Invalid=400, Unknown=0, NotChecked=0, Total=600 [2020-10-09 10:38:45,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2020-10-09 10:38:45,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 259. [2020-10-09 10:38:45,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 259 states. [2020-10-09 10:38:45,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 681 transitions. [2020-10-09 10:38:45,626 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 681 transitions. Word has length 14 [2020-10-09 10:38:45,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:38:45,626 INFO L481 AbstractCegarLoop]: Abstraction has 259 states and 681 transitions. [2020-10-09 10:38:45,626 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:38:45,626 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 681 transitions. [2020-10-09 10:38:45,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:38:45,627 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:38:45,627 INFO L421 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:38:45,833 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 143 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable149 [2020-10-09 10:38:45,834 INFO L429 AbstractCegarLoop]: === Iteration 151 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:38:45,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:38:45,834 INFO L82 PathProgramCache]: Analyzing trace with hash 2123641068, now seen corresponding path program 122 times [2020-10-09 10:38:45,834 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:38:45,835 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753567636] [2020-10-09 10:38:45,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:38:45,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:38:45,952 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:38:45,952 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753567636] [2020-10-09 10:38:45,952 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [901281024] [2020-10-09 10:38:45,953 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 144 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 144 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:38:45,990 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-09 10:38:45,990 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:38:45,991 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:38:45,991 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:38:46,152 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:38:46,153 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:38:46,153 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:38:46,153 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659356163] [2020-10-09 10:38:46,153 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:38:46,153 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:38:46,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:38:46,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:38:46,154 INFO L87 Difference]: Start difference. First operand 259 states and 681 transitions. Second operand 17 states. [2020-10-09 10:38:46,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:38:46,434 INFO L93 Difference]: Finished difference Result 332 states and 822 transitions. [2020-10-09 10:38:46,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-09 10:38:46,434 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-09 10:38:46,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:38:46,435 INFO L225 Difference]: With dead ends: 332 [2020-10-09 10:38:46,435 INFO L226 Difference]: Without dead ends: 314 [2020-10-09 10:38:46,435 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=177, Invalid=375, Unknown=0, NotChecked=0, Total=552 [2020-10-09 10:38:46,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2020-10-09 10:38:46,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 260. [2020-10-09 10:38:46,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 260 states. [2020-10-09 10:38:46,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 677 transitions. [2020-10-09 10:38:46,440 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 677 transitions. Word has length 14 [2020-10-09 10:38:46,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:38:46,440 INFO L481 AbstractCegarLoop]: Abstraction has 260 states and 677 transitions. [2020-10-09 10:38:46,440 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:38:46,440 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 677 transitions. [2020-10-09 10:38:46,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:38:46,441 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:38:46,441 INFO L421 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:38:46,641 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150,144 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:38:46,641 INFO L429 AbstractCegarLoop]: === Iteration 152 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:38:46,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:38:46,642 INFO L82 PathProgramCache]: Analyzing trace with hash -1313405971, now seen corresponding path program 123 times [2020-10-09 10:38:46,642 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:38:46,642 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374931637] [2020-10-09 10:38:46,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:38:46,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:38:46,765 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:38:46,765 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374931637] [2020-10-09 10:38:46,766 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1248335169] [2020-10-09 10:38:46,766 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 145 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 145 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:38:46,805 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-10-09 10:38:46,805 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:38:46,806 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:38:46,807 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:38:46,973 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:38:46,974 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:38:46,974 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:38:46,974 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192974532] [2020-10-09 10:38:46,974 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:38:46,975 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:38:46,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:38:46,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:38:46,975 INFO L87 Difference]: Start difference. First operand 260 states and 677 transitions. Second operand 17 states. [2020-10-09 10:38:47,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:38:47,246 INFO L93 Difference]: Finished difference Result 315 states and 779 transitions. [2020-10-09 10:38:47,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-09 10:38:47,246 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-09 10:38:47,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:38:47,247 INFO L225 Difference]: With dead ends: 315 [2020-10-09 10:38:47,247 INFO L226 Difference]: Without dead ends: 312 [2020-10-09 10:38:47,247 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=177, Invalid=375, Unknown=0, NotChecked=0, Total=552 [2020-10-09 10:38:47,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2020-10-09 10:38:47,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 265. [2020-10-09 10:38:47,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 265 states. [2020-10-09 10:38:47,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 690 transitions. [2020-10-09 10:38:47,251 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 690 transitions. Word has length 14 [2020-10-09 10:38:47,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:38:47,251 INFO L481 AbstractCegarLoop]: Abstraction has 265 states and 690 transitions. [2020-10-09 10:38:47,251 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:38:47,251 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 690 transitions. [2020-10-09 10:38:47,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:38:47,252 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:38:47,252 INFO L421 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:38:47,452 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151,145 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:38:47,452 INFO L429 AbstractCegarLoop]: === Iteration 153 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:38:47,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:38:47,453 INFO L82 PathProgramCache]: Analyzing trace with hash -1313405010, now seen corresponding path program 124 times [2020-10-09 10:38:47,453 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:38:47,453 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469930733] [2020-10-09 10:38:47,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:38:47,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:38:47,573 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:38:47,573 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469930733] [2020-10-09 10:38:47,573 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [721721124] [2020-10-09 10:38:47,573 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 146 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 146 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:38:47,612 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-09 10:38:47,612 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:38:47,613 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:38:47,613 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:38:47,788 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:38:47,789 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:38:47,789 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:38:47,789 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760748841] [2020-10-09 10:38:47,790 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:38:47,790 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:38:47,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:38:47,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:38:47,790 INFO L87 Difference]: Start difference. First operand 265 states and 690 transitions. Second operand 17 states. [2020-10-09 10:38:48,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:38:48,096 INFO L93 Difference]: Finished difference Result 334 states and 821 transitions. [2020-10-09 10:38:48,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-09 10:38:48,096 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-09 10:38:48,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:38:48,097 INFO L225 Difference]: With dead ends: 334 [2020-10-09 10:38:48,097 INFO L226 Difference]: Without dead ends: 330 [2020-10-09 10:38:48,097 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=176, Invalid=376, Unknown=0, NotChecked=0, Total=552 [2020-10-09 10:38:48,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2020-10-09 10:38:48,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 264. [2020-10-09 10:38:48,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 264 states. [2020-10-09 10:38:48,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 687 transitions. [2020-10-09 10:38:48,101 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 687 transitions. Word has length 14 [2020-10-09 10:38:48,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:38:48,102 INFO L481 AbstractCegarLoop]: Abstraction has 264 states and 687 transitions. [2020-10-09 10:38:48,102 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:38:48,102 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 687 transitions. [2020-10-09 10:38:48,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:38:48,102 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:38:48,102 INFO L421 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:38:48,302 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152,146 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:38:48,303 INFO L429 AbstractCegarLoop]: === Iteration 154 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:38:48,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:38:48,303 INFO L82 PathProgramCache]: Analyzing trace with hash -1313376180, now seen corresponding path program 125 times [2020-10-09 10:38:48,304 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:38:48,304 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264686749] [2020-10-09 10:38:48,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:38:48,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:38:48,426 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:38:48,426 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264686749] [2020-10-09 10:38:48,426 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2118589545] [2020-10-09 10:38:48,427 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 147 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 147 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:38:48,467 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-09 10:38:48,467 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:38:48,468 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:38:48,469 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:38:49,417 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:38:49,417 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:38:49,417 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:38:49,417 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595787652] [2020-10-09 10:38:49,418 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:38:49,418 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:38:49,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:38:49,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:38:49,418 INFO L87 Difference]: Start difference. First operand 264 states and 687 transitions. Second operand 17 states. [2020-10-09 10:38:49,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:38:49,809 INFO L93 Difference]: Finished difference Result 351 states and 859 transitions. [2020-10-09 10:38:49,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-09 10:38:49,810 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-09 10:38:49,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:38:49,811 INFO L225 Difference]: With dead ends: 351 [2020-10-09 10:38:49,811 INFO L226 Difference]: Without dead ends: 346 [2020-10-09 10:38:49,811 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=197, Invalid=403, Unknown=0, NotChecked=0, Total=600 [2020-10-09 10:38:49,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2020-10-09 10:38:49,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 269. [2020-10-09 10:38:49,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 269 states. [2020-10-09 10:38:49,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 700 transitions. [2020-10-09 10:38:49,815 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 700 transitions. Word has length 14 [2020-10-09 10:38:49,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:38:49,816 INFO L481 AbstractCegarLoop]: Abstraction has 269 states and 700 transitions. [2020-10-09 10:38:49,816 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:38:49,816 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 700 transitions. [2020-10-09 10:38:49,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:38:49,816 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:38:49,817 INFO L421 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:38:50,017 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153,147 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:38:50,018 INFO L429 AbstractCegarLoop]: === Iteration 155 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:38:50,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:38:50,018 INFO L82 PathProgramCache]: Analyzing trace with hash -1312481489, now seen corresponding path program 126 times [2020-10-09 10:38:50,018 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:38:50,019 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968641915] [2020-10-09 10:38:50,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:38:50,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:38:50,138 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:38:50,138 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968641915] [2020-10-09 10:38:50,138 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [279840912] [2020-10-09 10:38:50,139 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 148 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 148 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:38:50,177 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-09 10:38:50,178 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:38:50,179 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:38:50,182 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:38:50,341 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:38:50,341 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:38:50,341 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:38:50,342 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836122368] [2020-10-09 10:38:50,342 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:38:50,342 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:38:50,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:38:50,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=189, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:38:50,343 INFO L87 Difference]: Start difference. First operand 269 states and 700 transitions. Second operand 17 states. [2020-10-09 10:38:50,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:38:50,672 INFO L93 Difference]: Finished difference Result 357 states and 870 transitions. [2020-10-09 10:38:50,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-09 10:38:50,673 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-09 10:38:50,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:38:50,674 INFO L225 Difference]: With dead ends: 357 [2020-10-09 10:38:50,674 INFO L226 Difference]: Without dead ends: 339 [2020-10-09 10:38:50,674 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=200, Invalid=400, Unknown=0, NotChecked=0, Total=600 [2020-10-09 10:38:50,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2020-10-09 10:38:50,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 269. [2020-10-09 10:38:50,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 269 states. [2020-10-09 10:38:50,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 696 transitions. [2020-10-09 10:38:50,679 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 696 transitions. Word has length 14 [2020-10-09 10:38:50,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:38:50,679 INFO L481 AbstractCegarLoop]: Abstraction has 269 states and 696 transitions. [2020-10-09 10:38:50,680 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:38:50,680 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 696 transitions. [2020-10-09 10:38:50,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:38:50,680 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:38:50,680 INFO L421 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:38:50,880 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154,148 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:38:50,881 INFO L429 AbstractCegarLoop]: === Iteration 156 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:38:50,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:38:50,881 INFO L82 PathProgramCache]: Analyzing trace with hash -1284776820, now seen corresponding path program 127 times [2020-10-09 10:38:50,882 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:38:50,882 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478121212] [2020-10-09 10:38:50,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:38:50,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:38:51,012 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:38:51,012 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478121212] [2020-10-09 10:38:51,012 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [7685576] [2020-10-09 10:38:51,013 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 149 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 149 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:38:51,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:38:51,053 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:38:51,054 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:38:51,263 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:38:51,264 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:38:51,264 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:38:51,264 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920190616] [2020-10-09 10:38:51,264 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:38:51,264 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:38:51,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:38:51,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:38:51,265 INFO L87 Difference]: Start difference. First operand 269 states and 696 transitions. Second operand 17 states. [2020-10-09 10:38:51,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:38:51,580 INFO L93 Difference]: Finished difference Result 332 states and 820 transitions. [2020-10-09 10:38:51,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-09 10:38:51,581 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-09 10:38:51,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:38:51,582 INFO L225 Difference]: With dead ends: 332 [2020-10-09 10:38:51,582 INFO L226 Difference]: Without dead ends: 327 [2020-10-09 10:38:51,582 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=183, Invalid=369, Unknown=0, NotChecked=0, Total=552 [2020-10-09 10:38:51,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2020-10-09 10:38:51,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 266. [2020-10-09 10:38:51,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 266 states. [2020-10-09 10:38:51,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 689 transitions. [2020-10-09 10:38:51,586 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 689 transitions. Word has length 14 [2020-10-09 10:38:51,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:38:51,586 INFO L481 AbstractCegarLoop]: Abstraction has 266 states and 689 transitions. [2020-10-09 10:38:51,586 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:38:51,586 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 689 transitions. [2020-10-09 10:38:51,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:38:51,587 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:38:51,587 INFO L421 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:38:51,787 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 149 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable155 [2020-10-09 10:38:51,788 INFO L429 AbstractCegarLoop]: === Iteration 157 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:38:51,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:38:51,788 INFO L82 PathProgramCache]: Analyzing trace with hash -1283823508, now seen corresponding path program 128 times [2020-10-09 10:38:51,788 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:38:51,789 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387394312] [2020-10-09 10:38:51,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:38:51,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:38:51,950 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:38:51,951 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387394312] [2020-10-09 10:38:51,951 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [313290380] [2020-10-09 10:38:51,951 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 150 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 150 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:38:51,997 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-09 10:38:51,997 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:38:51,998 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:38:51,999 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:38:52,188 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:38:52,189 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:38:52,189 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:38:52,189 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791875441] [2020-10-09 10:38:52,189 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:38:52,190 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:38:52,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:38:52,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=189, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:38:52,190 INFO L87 Difference]: Start difference. First operand 266 states and 689 transitions. Second operand 17 states. [2020-10-09 10:38:52,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:38:52,373 INFO L93 Difference]: Finished difference Result 322 states and 792 transitions. [2020-10-09 10:38:52,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-09 10:38:52,373 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-09 10:38:52,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:38:52,374 INFO L225 Difference]: With dead ends: 322 [2020-10-09 10:38:52,374 INFO L226 Difference]: Without dead ends: 309 [2020-10-09 10:38:52,374 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=133, Invalid=287, Unknown=0, NotChecked=0, Total=420 [2020-10-09 10:38:52,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2020-10-09 10:38:52,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 268. [2020-10-09 10:38:52,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 268 states. [2020-10-09 10:38:52,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 691 transitions. [2020-10-09 10:38:52,378 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 691 transitions. Word has length 14 [2020-10-09 10:38:52,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:38:52,379 INFO L481 AbstractCegarLoop]: Abstraction has 268 states and 691 transitions. [2020-10-09 10:38:52,379 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:38:52,379 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 691 transitions. [2020-10-09 10:38:52,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:38:52,379 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:38:52,379 INFO L421 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:38:52,580 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 150 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable156 [2020-10-09 10:38:52,580 INFO L429 AbstractCegarLoop]: === Iteration 158 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:38:52,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:38:52,581 INFO L82 PathProgramCache]: Analyzing trace with hash 291274206, now seen corresponding path program 129 times [2020-10-09 10:38:52,581 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:38:52,581 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117537175] [2020-10-09 10:38:52,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:38:52,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:38:52,760 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:38:52,760 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117537175] [2020-10-09 10:38:52,760 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1173604714] [2020-10-09 10:38:52,761 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 151 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 151 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:38:52,799 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-09 10:38:52,799 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:38:52,800 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:38:52,800 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:38:52,983 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:38:52,984 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:38:52,984 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:38:52,984 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132383967] [2020-10-09 10:38:52,984 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:38:52,985 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:38:52,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:38:52,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:38:52,985 INFO L87 Difference]: Start difference. First operand 268 states and 691 transitions. Second operand 17 states. [2020-10-09 10:38:53,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:38:53,065 INFO L93 Difference]: Finished difference Result 305 states and 753 transitions. [2020-10-09 10:38:53,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-09 10:38:53,066 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-09 10:38:53,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:38:53,067 INFO L225 Difference]: With dead ends: 305 [2020-10-09 10:38:53,067 INFO L226 Difference]: Without dead ends: 303 [2020-10-09 10:38:53,067 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2020-10-09 10:38:53,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2020-10-09 10:38:53,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 274. [2020-10-09 10:38:53,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 274 states. [2020-10-09 10:38:53,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 709 transitions. [2020-10-09 10:38:53,071 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 709 transitions. Word has length 14 [2020-10-09 10:38:53,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:38:53,072 INFO L481 AbstractCegarLoop]: Abstraction has 274 states and 709 transitions. [2020-10-09 10:38:53,072 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:38:53,072 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 709 transitions. [2020-10-09 10:38:53,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:38:53,072 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:38:53,073 INFO L421 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:38:53,281 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 151 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable157 [2020-10-09 10:38:53,281 INFO L429 AbstractCegarLoop]: === Iteration 159 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:38:53,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:38:53,282 INFO L82 PathProgramCache]: Analyzing trace with hash 291275167, now seen corresponding path program 130 times [2020-10-09 10:38:53,282 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:38:53,282 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518610782] [2020-10-09 10:38:53,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:38:53,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:38:53,444 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:38:53,445 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518610782] [2020-10-09 10:38:53,445 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1808741240] [2020-10-09 10:38:53,445 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 152 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 152 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:38:53,482 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-09 10:38:53,482 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:38:53,483 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:38:53,483 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:38:53,663 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:38:53,663 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:38:53,663 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:38:53,663 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729041356] [2020-10-09 10:38:53,664 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:38:53,664 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:38:53,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:38:53,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:38:53,664 INFO L87 Difference]: Start difference. First operand 274 states and 709 transitions. Second operand 17 states. [2020-10-09 10:38:53,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:38:53,924 INFO L93 Difference]: Finished difference Result 325 states and 802 transitions. [2020-10-09 10:38:53,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-09 10:38:53,925 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-09 10:38:53,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:38:53,926 INFO L225 Difference]: With dead ends: 325 [2020-10-09 10:38:53,926 INFO L226 Difference]: Without dead ends: 322 [2020-10-09 10:38:53,927 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=159, Invalid=347, Unknown=0, NotChecked=0, Total=506 [2020-10-09 10:38:53,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2020-10-09 10:38:53,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 272. [2020-10-09 10:38:53,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 272 states. [2020-10-09 10:38:53,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 703 transitions. [2020-10-09 10:38:53,931 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 703 transitions. Word has length 14 [2020-10-09 10:38:53,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:38:53,931 INFO L481 AbstractCegarLoop]: Abstraction has 272 states and 703 transitions. [2020-10-09 10:38:53,931 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:38:53,931 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 703 transitions. [2020-10-09 10:38:53,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:38:53,931 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:38:53,931 INFO L421 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:38:54,132 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 152 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable158 [2020-10-09 10:38:54,132 INFO L429 AbstractCegarLoop]: === Iteration 160 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:38:54,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:38:54,133 INFO L82 PathProgramCache]: Analyzing trace with hash 291303997, now seen corresponding path program 131 times [2020-10-09 10:38:54,133 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:38:54,133 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110896815] [2020-10-09 10:38:54,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:38:54,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:38:54,279 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:38:54,280 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110896815] [2020-10-09 10:38:54,280 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [412394378] [2020-10-09 10:38:54,280 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 153 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 153 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:38:54,319 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-09 10:38:54,319 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:38:54,320 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:38:54,320 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:38:54,646 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:38:54,646 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:38:54,646 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:38:54,647 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196678475] [2020-10-09 10:38:54,647 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:38:54,647 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:38:54,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:38:54,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=196, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:38:54,647 INFO L87 Difference]: Start difference. First operand 272 states and 703 transitions. Second operand 17 states. [2020-10-09 10:38:54,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:38:54,994 INFO L93 Difference]: Finished difference Result 348 states and 857 transitions. [2020-10-09 10:38:54,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-09 10:38:54,995 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-09 10:38:54,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:38:54,996 INFO L225 Difference]: With dead ends: 348 [2020-10-09 10:38:54,996 INFO L226 Difference]: Without dead ends: 344 [2020-10-09 10:38:54,996 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=180, Invalid=372, Unknown=0, NotChecked=0, Total=552 [2020-10-09 10:38:54,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2020-10-09 10:38:54,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 270. [2020-10-09 10:38:54,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 270 states. [2020-10-09 10:38:55,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 697 transitions. [2020-10-09 10:38:55,000 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 697 transitions. Word has length 14 [2020-10-09 10:38:55,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:38:55,000 INFO L481 AbstractCegarLoop]: Abstraction has 270 states and 697 transitions. [2020-10-09 10:38:55,000 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:38:55,001 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 697 transitions. [2020-10-09 10:38:55,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:38:55,001 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:38:55,001 INFO L421 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:38:55,201 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159,153 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:38:55,202 INFO L429 AbstractCegarLoop]: === Iteration 161 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:38:55,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:38:55,202 INFO L82 PathProgramCache]: Analyzing trace with hash 292197727, now seen corresponding path program 132 times [2020-10-09 10:38:55,202 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:38:55,203 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067410738] [2020-10-09 10:38:55,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:38:55,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:38:55,335 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:38:55,335 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067410738] [2020-10-09 10:38:55,335 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1419280520] [2020-10-09 10:38:55,335 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 154 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 154 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:38:55,374 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-09 10:38:55,374 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:38:55,374 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:38:55,375 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:38:58,457 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:38:58,458 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:38:58,458 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:38:58,458 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712238485] [2020-10-09 10:38:58,458 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:38:58,458 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:38:58,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:38:58,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=198, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:38:58,458 INFO L87 Difference]: Start difference. First operand 270 states and 697 transitions. Second operand 17 states. [2020-10-09 10:38:58,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:38:58,901 INFO L93 Difference]: Finished difference Result 338 states and 827 transitions. [2020-10-09 10:38:58,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-09 10:38:58,902 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-09 10:38:58,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:38:58,902 INFO L225 Difference]: With dead ends: 338 [2020-10-09 10:38:58,903 INFO L226 Difference]: Without dead ends: 335 [2020-10-09 10:38:58,903 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=208, Invalid=442, Unknown=0, NotChecked=0, Total=650 [2020-10-09 10:38:58,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2020-10-09 10:38:58,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 272. [2020-10-09 10:38:58,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 272 states. [2020-10-09 10:38:58,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 703 transitions. [2020-10-09 10:38:58,907 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 703 transitions. Word has length 14 [2020-10-09 10:38:58,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:38:58,908 INFO L481 AbstractCegarLoop]: Abstraction has 272 states and 703 transitions. [2020-10-09 10:38:58,908 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:38:58,908 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 703 transitions. [2020-10-09 10:38:58,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:38:58,908 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:38:58,908 INFO L421 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:38:59,109 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160,154 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:38:59,109 INFO L429 AbstractCegarLoop]: === Iteration 162 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:38:59,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:38:59,110 INFO L82 PathProgramCache]: Analyzing trace with hash 292198688, now seen corresponding path program 133 times [2020-10-09 10:38:59,110 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:38:59,110 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311400284] [2020-10-09 10:38:59,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:38:59,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:38:59,237 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:38:59,237 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311400284] [2020-10-09 10:38:59,237 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [871017730] [2020-10-09 10:38:59,237 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 155 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 155 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:38:59,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:38:59,276 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:38:59,277 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:39:03,582 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:39:03,582 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:39:03,582 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:39:03,582 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296915666] [2020-10-09 10:39:03,582 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:39:03,583 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:39:03,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:39:03,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=200, Unknown=1, NotChecked=0, Total=272 [2020-10-09 10:39:03,583 INFO L87 Difference]: Start difference. First operand 272 states and 703 transitions. Second operand 17 states. [2020-10-09 10:39:07,819 WARN L193 SmtUtils]: Spent 4.11 s on a formula simplification. DAG size of input: 41 DAG size of output: 37 [2020-10-09 10:39:08,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:39:08,175 INFO L93 Difference]: Finished difference Result 369 states and 902 transitions. [2020-10-09 10:39:08,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-09 10:39:08,176 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-09 10:39:08,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:39:08,177 INFO L225 Difference]: With dead ends: 369 [2020-10-09 10:39:08,177 INFO L226 Difference]: Without dead ends: 364 [2020-10-09 10:39:08,178 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 8.8s TimeCoverageRelationStatistics Valid=205, Invalid=444, Unknown=1, NotChecked=0, Total=650 [2020-10-09 10:39:08,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2020-10-09 10:39:08,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 272. [2020-10-09 10:39:08,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 272 states. [2020-10-09 10:39:08,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 703 transitions. [2020-10-09 10:39:08,183 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 703 transitions. Word has length 14 [2020-10-09 10:39:08,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:39:08,184 INFO L481 AbstractCegarLoop]: Abstraction has 272 states and 703 transitions. [2020-10-09 10:39:08,184 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:39:08,184 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 703 transitions. [2020-10-09 10:39:08,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:39:08,184 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:39:08,184 INFO L421 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:39:08,385 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 155 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable161 [2020-10-09 10:39:08,385 INFO L429 AbstractCegarLoop]: === Iteration 163 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:39:08,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:39:08,385 INFO L82 PathProgramCache]: Analyzing trace with hash 292227518, now seen corresponding path program 134 times [2020-10-09 10:39:08,385 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:39:08,386 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395908006] [2020-10-09 10:39:08,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:39:08,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:39:08,514 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:39:08,514 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395908006] [2020-10-09 10:39:08,514 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1278285550] [2020-10-09 10:39:08,515 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 156 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 156 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:39:08,554 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-09 10:39:08,554 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:39:08,555 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:39:08,555 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:39:08,803 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:39:08,803 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:39:08,803 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:39:08,803 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108907135] [2020-10-09 10:39:08,803 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:39:08,803 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:39:08,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:39:08,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=201, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:39:08,804 INFO L87 Difference]: Start difference. First operand 272 states and 703 transitions. Second operand 17 states. [2020-10-09 10:39:09,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:39:09,251 INFO L93 Difference]: Finished difference Result 352 states and 862 transitions. [2020-10-09 10:39:09,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-09 10:39:09,251 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-09 10:39:09,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:39:09,252 INFO L225 Difference]: With dead ends: 352 [2020-10-09 10:39:09,252 INFO L226 Difference]: Without dead ends: 348 [2020-10-09 10:39:09,252 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=210, Invalid=440, Unknown=0, NotChecked=0, Total=650 [2020-10-09 10:39:09,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2020-10-09 10:39:09,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 268. [2020-10-09 10:39:09,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 268 states. [2020-10-09 10:39:09,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 691 transitions. [2020-10-09 10:39:09,257 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 691 transitions. Word has length 14 [2020-10-09 10:39:09,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:39:09,257 INFO L481 AbstractCegarLoop]: Abstraction has 268 states and 691 transitions. [2020-10-09 10:39:09,257 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:39:09,257 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 691 transitions. [2020-10-09 10:39:09,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:39:09,258 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:39:09,258 INFO L421 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:39:09,458 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162,156 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:39:09,458 INFO L429 AbstractCegarLoop]: === Iteration 164 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:39:09,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:39:09,459 INFO L82 PathProgramCache]: Analyzing trace with hash 319903357, now seen corresponding path program 135 times [2020-10-09 10:39:09,459 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:39:09,459 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012011893] [2020-10-09 10:39:09,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:39:09,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:39:09,572 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:39:09,572 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012011893] [2020-10-09 10:39:09,572 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1265614815] [2020-10-09 10:39:09,572 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 157 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 157 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:39:09,611 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-09 10:39:09,612 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:39:09,612 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:39:09,613 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:39:09,792 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:39:09,792 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:39:09,792 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:39:09,792 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225973664] [2020-10-09 10:39:09,793 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:39:09,793 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:39:09,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:39:09,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:39:09,794 INFO L87 Difference]: Start difference. First operand 268 states and 691 transitions. Second operand 17 states. [2020-10-09 10:39:10,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:39:10,253 INFO L93 Difference]: Finished difference Result 330 states and 806 transitions. [2020-10-09 10:39:10,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-09 10:39:10,254 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-09 10:39:10,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:39:10,254 INFO L225 Difference]: With dead ends: 330 [2020-10-09 10:39:10,254 INFO L226 Difference]: Without dead ends: 327 [2020-10-09 10:39:10,255 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=250, Invalid=562, Unknown=0, NotChecked=0, Total=812 [2020-10-09 10:39:10,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2020-10-09 10:39:10,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 271. [2020-10-09 10:39:10,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 271 states. [2020-10-09 10:39:10,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 700 transitions. [2020-10-09 10:39:10,258 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 700 transitions. Word has length 14 [2020-10-09 10:39:10,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:39:10,259 INFO L481 AbstractCegarLoop]: Abstraction has 271 states and 700 transitions. [2020-10-09 10:39:10,259 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:39:10,259 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 700 transitions. [2020-10-09 10:39:10,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:39:10,259 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:39:10,259 INFO L421 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:39:10,460 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163,157 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:39:10,460 INFO L429 AbstractCegarLoop]: === Iteration 165 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:39:10,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:39:10,461 INFO L82 PathProgramCache]: Analyzing trace with hash 319904318, now seen corresponding path program 136 times [2020-10-09 10:39:10,461 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:39:10,461 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679690301] [2020-10-09 10:39:10,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:39:10,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:39:10,576 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:39:10,577 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679690301] [2020-10-09 10:39:10,577 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [111681970] [2020-10-09 10:39:10,577 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 158 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 158 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:39:10,625 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-09 10:39:10,625 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:39:10,625 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:39:10,626 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:39:10,807 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:39:10,807 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:39:10,807 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:39:10,808 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726097865] [2020-10-09 10:39:10,808 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:39:10,808 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:39:10,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:39:10,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:39:10,809 INFO L87 Difference]: Start difference. First operand 271 states and 700 transitions. Second operand 17 states. [2020-10-09 10:39:11,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:39:11,295 INFO L93 Difference]: Finished difference Result 365 states and 887 transitions. [2020-10-09 10:39:11,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-09 10:39:11,296 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-09 10:39:11,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:39:11,296 INFO L225 Difference]: With dead ends: 365 [2020-10-09 10:39:11,296 INFO L226 Difference]: Without dead ends: 360 [2020-10-09 10:39:11,297 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 201 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=248, Invalid=564, Unknown=0, NotChecked=0, Total=812 [2020-10-09 10:39:11,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2020-10-09 10:39:11,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 272. [2020-10-09 10:39:11,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 272 states. [2020-10-09 10:39:11,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 703 transitions. [2020-10-09 10:39:11,301 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 703 transitions. Word has length 14 [2020-10-09 10:39:11,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:39:11,301 INFO L481 AbstractCegarLoop]: Abstraction has 272 states and 703 transitions. [2020-10-09 10:39:11,302 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:39:11,302 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 703 transitions. [2020-10-09 10:39:11,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:39:11,302 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:39:11,302 INFO L421 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:39:11,502 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164,158 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:39:11,503 INFO L429 AbstractCegarLoop]: === Iteration 166 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:39:11,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:39:11,503 INFO L82 PathProgramCache]: Analyzing trace with hash 319933148, now seen corresponding path program 137 times [2020-10-09 10:39:11,504 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:39:11,504 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692151833] [2020-10-09 10:39:11,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:39:11,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:39:11,615 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:39:11,616 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692151833] [2020-10-09 10:39:11,616 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [897918557] [2020-10-09 10:39:11,616 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 159 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 159 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:39:11,653 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-09 10:39:11,653 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:39:11,654 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:39:11,655 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:39:11,817 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:39:11,817 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:39:11,817 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:39:11,818 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158423995] [2020-10-09 10:39:11,818 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:39:11,818 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:39:11,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:39:11,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=203, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:39:11,819 INFO L87 Difference]: Start difference. First operand 272 states and 703 transitions. Second operand 17 states. [2020-10-09 10:39:12,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:39:12,233 INFO L93 Difference]: Finished difference Result 363 states and 882 transitions. [2020-10-09 10:39:12,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-09 10:39:12,233 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-09 10:39:12,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:39:12,234 INFO L225 Difference]: With dead ends: 363 [2020-10-09 10:39:12,234 INFO L226 Difference]: Without dead ends: 358 [2020-10-09 10:39:12,234 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 161 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=222, Invalid=480, Unknown=0, NotChecked=0, Total=702 [2020-10-09 10:39:12,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2020-10-09 10:39:12,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 271. [2020-10-09 10:39:12,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 271 states. [2020-10-09 10:39:12,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 700 transitions. [2020-10-09 10:39:12,239 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 700 transitions. Word has length 14 [2020-10-09 10:39:12,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:39:12,239 INFO L481 AbstractCegarLoop]: Abstraction has 271 states and 700 transitions. [2020-10-09 10:39:12,239 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:39:12,239 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 700 transitions. [2020-10-09 10:39:12,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:39:12,240 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:39:12,240 INFO L421 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:39:12,441 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 159 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable165 [2020-10-09 10:39:12,442 INFO L429 AbstractCegarLoop]: === Iteration 167 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:39:12,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:39:12,443 INFO L82 PathProgramCache]: Analyzing trace with hash 320857630, now seen corresponding path program 138 times [2020-10-09 10:39:12,443 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:39:12,444 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156931501] [2020-10-09 10:39:12,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:39:12,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:39:12,560 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:39:12,560 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156931501] [2020-10-09 10:39:12,560 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1449007211] [2020-10-09 10:39:12,561 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 160 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 160 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:39:12,600 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-09 10:39:12,601 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:39:12,602 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:39:12,603 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:39:12,782 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:39:12,783 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:39:12,783 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:39:12,783 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384578617] [2020-10-09 10:39:12,784 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:39:12,784 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:39:12,784 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:39:12,784 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:39:12,784 INFO L87 Difference]: Start difference. First operand 271 states and 700 transitions. Second operand 17 states. [2020-10-09 10:39:13,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:39:13,132 INFO L93 Difference]: Finished difference Result 333 states and 812 transitions. [2020-10-09 10:39:13,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-09 10:39:13,133 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-09 10:39:13,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:39:13,134 INFO L225 Difference]: With dead ends: 333 [2020-10-09 10:39:13,134 INFO L226 Difference]: Without dead ends: 315 [2020-10-09 10:39:13,134 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=179, Invalid=421, Unknown=0, NotChecked=0, Total=600 [2020-10-09 10:39:13,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2020-10-09 10:39:13,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 266. [2020-10-09 10:39:13,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 266 states. [2020-10-09 10:39:13,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 683 transitions. [2020-10-09 10:39:13,139 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 683 transitions. Word has length 14 [2020-10-09 10:39:13,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:39:13,139 INFO L481 AbstractCegarLoop]: Abstraction has 266 states and 683 transitions. [2020-10-09 10:39:13,140 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:39:13,140 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 683 transitions. [2020-10-09 10:39:13,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:39:13,140 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:39:13,140 INFO L421 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:39:13,341 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 160 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable166 [2020-10-09 10:39:13,341 INFO L429 AbstractCegarLoop]: === Iteration 168 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:39:13,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:39:13,342 INFO L82 PathProgramCache]: Analyzing trace with hash -1429448084, now seen corresponding path program 139 times [2020-10-09 10:39:13,342 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:39:13,342 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262596170] [2020-10-09 10:39:13,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:39:13,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:39:13,526 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:39:13,527 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262596170] [2020-10-09 10:39:13,527 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1537239618] [2020-10-09 10:39:13,527 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 161 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 161 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:39:13,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:39:13,576 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:39:13,577 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:39:13,765 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:39:13,766 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:39:13,766 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:39:13,766 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932366197] [2020-10-09 10:39:13,766 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:39:13,767 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:39:13,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:39:13,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:39:13,767 INFO L87 Difference]: Start difference. First operand 266 states and 683 transitions. Second operand 17 states. [2020-10-09 10:39:13,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:39:13,888 INFO L93 Difference]: Finished difference Result 296 states and 732 transitions. [2020-10-09 10:39:13,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-09 10:39:13,888 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-09 10:39:13,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:39:13,889 INFO L225 Difference]: With dead ends: 296 [2020-10-09 10:39:13,889 INFO L226 Difference]: Without dead ends: 294 [2020-10-09 10:39:13,889 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-10-09 10:39:13,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2020-10-09 10:39:13,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 270. [2020-10-09 10:39:13,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 270 states. [2020-10-09 10:39:13,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 695 transitions. [2020-10-09 10:39:13,893 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 695 transitions. Word has length 14 [2020-10-09 10:39:13,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:39:13,893 INFO L481 AbstractCegarLoop]: Abstraction has 270 states and 695 transitions. [2020-10-09 10:39:13,894 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:39:13,894 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 695 transitions. [2020-10-09 10:39:13,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:39:13,894 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:39:13,894 INFO L421 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:39:14,094 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 161 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable167 [2020-10-09 10:39:14,095 INFO L429 AbstractCegarLoop]: === Iteration 169 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:39:14,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:39:14,095 INFO L82 PathProgramCache]: Analyzing trace with hash -1429447123, now seen corresponding path program 140 times [2020-10-09 10:39:14,096 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:39:14,096 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876679702] [2020-10-09 10:39:14,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:39:14,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:39:14,247 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:39:14,247 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876679702] [2020-10-09 10:39:14,247 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [458091459] [2020-10-09 10:39:14,247 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 162 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 162 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:39:14,287 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-09 10:39:14,287 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:39:14,288 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:39:14,289 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:39:14,467 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:39:14,467 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:39:14,467 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:39:14,467 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812878605] [2020-10-09 10:39:14,468 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:39:14,468 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:39:14,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:39:14,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:39:14,469 INFO L87 Difference]: Start difference. First operand 270 states and 695 transitions. Second operand 17 states. [2020-10-09 10:39:14,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:39:14,771 INFO L93 Difference]: Finished difference Result 328 states and 803 transitions. [2020-10-09 10:39:14,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-09 10:39:14,772 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-09 10:39:14,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:39:14,773 INFO L225 Difference]: With dead ends: 328 [2020-10-09 10:39:14,773 INFO L226 Difference]: Without dead ends: 325 [2020-10-09 10:39:14,773 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=170, Invalid=382, Unknown=0, NotChecked=0, Total=552 [2020-10-09 10:39:14,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2020-10-09 10:39:14,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 268. [2020-10-09 10:39:14,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 268 states. [2020-10-09 10:39:14,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 689 transitions. [2020-10-09 10:39:14,777 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 689 transitions. Word has length 14 [2020-10-09 10:39:14,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:39:14,777 INFO L481 AbstractCegarLoop]: Abstraction has 268 states and 689 transitions. [2020-10-09 10:39:14,777 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:39:14,777 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 689 transitions. [2020-10-09 10:39:14,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:39:14,778 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:39:14,778 INFO L421 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:39:14,978 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 162 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable168 [2020-10-09 10:39:14,979 INFO L429 AbstractCegarLoop]: === Iteration 170 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:39:14,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:39:14,979 INFO L82 PathProgramCache]: Analyzing trace with hash -1429418293, now seen corresponding path program 141 times [2020-10-09 10:39:14,979 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:39:14,980 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376582773] [2020-10-09 10:39:14,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:39:14,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:39:15,113 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:39:15,113 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376582773] [2020-10-09 10:39:15,113 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [720489375] [2020-10-09 10:39:15,113 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 163 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 163 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:39:15,159 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-09 10:39:15,160 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:39:15,161 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:39:15,161 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:39:15,542 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:39:15,542 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:39:15,542 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:39:15,559 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970233597] [2020-10-09 10:39:15,559 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:39:15,559 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:39:15,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:39:15,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:39:15,560 INFO L87 Difference]: Start difference. First operand 268 states and 689 transitions. Second operand 17 states. [2020-10-09 10:39:16,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:39:16,123 INFO L93 Difference]: Finished difference Result 344 states and 841 transitions. [2020-10-09 10:39:16,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-09 10:39:16,124 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-09 10:39:16,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:39:16,125 INFO L225 Difference]: With dead ends: 344 [2020-10-09 10:39:16,125 INFO L226 Difference]: Without dead ends: 340 [2020-10-09 10:39:16,125 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=188, Invalid=412, Unknown=0, NotChecked=0, Total=600 [2020-10-09 10:39:16,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2020-10-09 10:39:16,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 266. [2020-10-09 10:39:16,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 266 states. [2020-10-09 10:39:16,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 683 transitions. [2020-10-09 10:39:16,130 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 683 transitions. Word has length 14 [2020-10-09 10:39:16,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:39:16,130 INFO L481 AbstractCegarLoop]: Abstraction has 266 states and 683 transitions. [2020-10-09 10:39:16,130 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:39:16,130 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 683 transitions. [2020-10-09 10:39:16,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:39:16,131 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:39:16,131 INFO L421 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:39:16,341 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 163 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable169 [2020-10-09 10:39:16,342 INFO L429 AbstractCegarLoop]: === Iteration 171 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:39:16,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:39:16,342 INFO L82 PathProgramCache]: Analyzing trace with hash -1428524563, now seen corresponding path program 142 times [2020-10-09 10:39:16,342 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:39:16,343 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129465800] [2020-10-09 10:39:16,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:39:16,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:39:16,463 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:39:16,463 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129465800] [2020-10-09 10:39:16,464 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [935831263] [2020-10-09 10:39:16,464 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 164 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 164 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:39:16,502 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-09 10:39:16,503 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:39:16,503 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:39:16,504 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:39:19,503 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:39:19,504 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:39:19,504 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:39:19,504 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780598311] [2020-10-09 10:39:19,504 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:39:19,504 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:39:19,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:39:19,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=207, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:39:19,504 INFO L87 Difference]: Start difference. First operand 266 states and 683 transitions. Second operand 17 states. [2020-10-09 10:39:19,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:39:19,977 INFO L93 Difference]: Finished difference Result 331 states and 805 transitions. [2020-10-09 10:39:19,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-09 10:39:19,977 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-09 10:39:19,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:39:19,978 INFO L225 Difference]: With dead ends: 331 [2020-10-09 10:39:19,978 INFO L226 Difference]: Without dead ends: 328 [2020-10-09 10:39:19,979 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=216, Invalid=486, Unknown=0, NotChecked=0, Total=702 [2020-10-09 10:39:19,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2020-10-09 10:39:19,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 268. [2020-10-09 10:39:19,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 268 states. [2020-10-09 10:39:19,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 689 transitions. [2020-10-09 10:39:19,984 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 689 transitions. Word has length 14 [2020-10-09 10:39:19,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:39:19,984 INFO L481 AbstractCegarLoop]: Abstraction has 268 states and 689 transitions. [2020-10-09 10:39:19,984 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:39:19,984 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 689 transitions. [2020-10-09 10:39:19,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:39:19,985 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:39:19,985 INFO L421 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:39:20,194 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 164 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable170 [2020-10-09 10:39:20,195 INFO L429 AbstractCegarLoop]: === Iteration 172 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:39:20,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:39:20,195 INFO L82 PathProgramCache]: Analyzing trace with hash -1428523602, now seen corresponding path program 143 times [2020-10-09 10:39:20,195 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:39:20,196 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960403611] [2020-10-09 10:39:20,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:39:20,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:39:20,316 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:39:20,316 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960403611] [2020-10-09 10:39:20,316 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1659186724] [2020-10-09 10:39:20,317 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 165 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 165 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:39:20,353 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-09 10:39:20,353 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:39:20,354 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:39:20,354 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:39:24,109 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:39:24,109 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:39:24,109 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:39:24,109 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297287529] [2020-10-09 10:39:24,110 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:39:24,110 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:39:24,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:39:24,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=208, Unknown=1, NotChecked=0, Total=272 [2020-10-09 10:39:24,110 INFO L87 Difference]: Start difference. First operand 268 states and 689 transitions. Second operand 17 states. [2020-10-09 10:39:28,393 WARN L193 SmtUtils]: Spent 4.11 s on a formula simplification. DAG size of input: 41 DAG size of output: 37 [2020-10-09 10:39:28,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:39:28,734 INFO L93 Difference]: Finished difference Result 357 states and 866 transitions. [2020-10-09 10:39:28,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-09 10:39:28,735 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-09 10:39:28,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:39:28,735 INFO L225 Difference]: With dead ends: 357 [2020-10-09 10:39:28,735 INFO L226 Difference]: Without dead ends: 352 [2020-10-09 10:39:28,736 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 161 ImplicationChecksByTransitivity, 8.2s TimeCoverageRelationStatistics Valid=211, Invalid=490, Unknown=1, NotChecked=0, Total=702 [2020-10-09 10:39:28,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2020-10-09 10:39:28,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 268. [2020-10-09 10:39:28,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 268 states. [2020-10-09 10:39:28,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 689 transitions. [2020-10-09 10:39:28,740 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 689 transitions. Word has length 14 [2020-10-09 10:39:28,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:39:28,740 INFO L481 AbstractCegarLoop]: Abstraction has 268 states and 689 transitions. [2020-10-09 10:39:28,740 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:39:28,741 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 689 transitions. [2020-10-09 10:39:28,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:39:28,741 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:39:28,741 INFO L421 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:39:28,941 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable171,165 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:39:28,942 INFO L429 AbstractCegarLoop]: === Iteration 173 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:39:28,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:39:28,942 INFO L82 PathProgramCache]: Analyzing trace with hash -1428494772, now seen corresponding path program 144 times [2020-10-09 10:39:28,942 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:39:28,943 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711266802] [2020-10-09 10:39:28,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:39:28,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:39:29,064 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:39:29,065 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711266802] [2020-10-09 10:39:29,065 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1466639736] [2020-10-09 10:39:29,065 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 166 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 166 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:39:29,104 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-09 10:39:29,105 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:39:29,106 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:39:29,107 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:39:29,347 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:39:29,348 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:39:29,348 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:39:29,348 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610404424] [2020-10-09 10:39:29,348 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:39:29,348 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:39:29,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:39:29,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:39:29,349 INFO L87 Difference]: Start difference. First operand 268 states and 689 transitions. Second operand 17 states. [2020-10-09 10:39:29,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:39:29,837 INFO L93 Difference]: Finished difference Result 339 states and 826 transitions. [2020-10-09 10:39:29,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-09 10:39:29,837 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-09 10:39:29,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:39:29,838 INFO L225 Difference]: With dead ends: 339 [2020-10-09 10:39:29,838 INFO L226 Difference]: Without dead ends: 335 [2020-10-09 10:39:29,838 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=215, Invalid=487, Unknown=0, NotChecked=0, Total=702 [2020-10-09 10:39:29,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2020-10-09 10:39:29,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 264. [2020-10-09 10:39:29,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 264 states. [2020-10-09 10:39:29,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 677 transitions. [2020-10-09 10:39:29,842 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 677 transitions. Word has length 14 [2020-10-09 10:39:29,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:39:29,842 INFO L481 AbstractCegarLoop]: Abstraction has 264 states and 677 transitions. [2020-10-09 10:39:29,842 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:39:29,842 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 677 transitions. [2020-10-09 10:39:29,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:39:29,842 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:39:29,842 INFO L421 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:39:30,043 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable172,166 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:39:30,043 INFO L429 AbstractCegarLoop]: === Iteration 174 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:39:30,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:39:30,044 INFO L82 PathProgramCache]: Analyzing trace with hash -792218594, now seen corresponding path program 145 times [2020-10-09 10:39:30,044 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:39:30,044 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47810214] [2020-10-09 10:39:30,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:39:30,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:39:30,192 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:39:30,193 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47810214] [2020-10-09 10:39:30,193 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [332481647] [2020-10-09 10:39:30,193 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 167 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 167 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:39:30,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:39:30,232 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:39:30,232 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:39:30,420 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:39:30,421 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:39:30,421 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:39:30,421 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601929150] [2020-10-09 10:39:30,421 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:39:30,421 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:39:30,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:39:30,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=207, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:39:30,422 INFO L87 Difference]: Start difference. First operand 264 states and 677 transitions. Second operand 17 states. [2020-10-09 10:39:30,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:39:30,572 INFO L93 Difference]: Finished difference Result 287 states and 713 transitions. [2020-10-09 10:39:30,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-09 10:39:30,573 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-09 10:39:30,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:39:30,573 INFO L225 Difference]: With dead ends: 287 [2020-10-09 10:39:30,573 INFO L226 Difference]: Without dead ends: 285 [2020-10-09 10:39:30,574 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=113, Invalid=267, Unknown=0, NotChecked=0, Total=380 [2020-10-09 10:39:30,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2020-10-09 10:39:30,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 266. [2020-10-09 10:39:30,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 266 states. [2020-10-09 10:39:30,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 683 transitions. [2020-10-09 10:39:30,578 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 683 transitions. Word has length 14 [2020-10-09 10:39:30,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:39:30,578 INFO L481 AbstractCegarLoop]: Abstraction has 266 states and 683 transitions. [2020-10-09 10:39:30,578 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:39:30,578 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 683 transitions. [2020-10-09 10:39:30,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:39:30,578 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:39:30,578 INFO L421 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:39:30,779 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173,167 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:39:30,779 INFO L429 AbstractCegarLoop]: === Iteration 175 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:39:30,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:39:30,780 INFO L82 PathProgramCache]: Analyzing trace with hash -792217633, now seen corresponding path program 146 times [2020-10-09 10:39:30,780 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:39:30,780 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76711344] [2020-10-09 10:39:30,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:39:30,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:39:30,913 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:39:30,914 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76711344] [2020-10-09 10:39:30,914 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [625533061] [2020-10-09 10:39:30,914 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 168 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 168 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:39:30,953 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-09 10:39:30,953 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:39:30,954 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:39:30,955 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:39:31,139 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:39:31,140 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:39:31,140 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:39:31,140 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915816624] [2020-10-09 10:39:31,140 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:39:31,140 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:39:31,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:39:31,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:39:31,141 INFO L87 Difference]: Start difference. First operand 266 states and 683 transitions. Second operand 17 states. [2020-10-09 10:39:31,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:39:31,487 INFO L93 Difference]: Finished difference Result 317 states and 778 transitions. [2020-10-09 10:39:31,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-09 10:39:31,488 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-09 10:39:31,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:39:31,488 INFO L225 Difference]: With dead ends: 317 [2020-10-09 10:39:31,488 INFO L226 Difference]: Without dead ends: 314 [2020-10-09 10:39:31,489 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=185, Invalid=415, Unknown=0, NotChecked=0, Total=600 [2020-10-09 10:39:31,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2020-10-09 10:39:31,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 264. [2020-10-09 10:39:31,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 264 states. [2020-10-09 10:39:31,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 677 transitions. [2020-10-09 10:39:31,493 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 677 transitions. Word has length 14 [2020-10-09 10:39:31,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:39:31,493 INFO L481 AbstractCegarLoop]: Abstraction has 264 states and 677 transitions. [2020-10-09 10:39:31,493 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:39:31,493 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 677 transitions. [2020-10-09 10:39:31,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:39:31,493 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:39:31,493 INFO L421 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:39:31,694 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174,168 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:39:31,694 INFO L429 AbstractCegarLoop]: === Iteration 176 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:39:31,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:39:31,695 INFO L82 PathProgramCache]: Analyzing trace with hash -792188803, now seen corresponding path program 147 times [2020-10-09 10:39:31,695 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:39:31,695 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150857586] [2020-10-09 10:39:31,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:39:31,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:39:31,812 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:39:31,812 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150857586] [2020-10-09 10:39:31,812 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [375777936] [2020-10-09 10:39:31,813 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 169 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 169 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:39:31,852 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-09 10:39:31,852 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:39:31,853 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:39:31,853 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:39:32,115 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:39:32,115 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:39:32,115 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:39:32,115 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629850681] [2020-10-09 10:39:32,115 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:39:32,116 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:39:32,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:39:32,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:39:32,116 INFO L87 Difference]: Start difference. First operand 264 states and 677 transitions. Second operand 17 states. [2020-10-09 10:39:32,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:39:32,545 INFO L93 Difference]: Finished difference Result 330 states and 807 transitions. [2020-10-09 10:39:32,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-09 10:39:32,546 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-09 10:39:32,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:39:32,546 INFO L225 Difference]: With dead ends: 330 [2020-10-09 10:39:32,547 INFO L226 Difference]: Without dead ends: 326 [2020-10-09 10:39:32,547 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=200, Invalid=450, Unknown=0, NotChecked=0, Total=650 [2020-10-09 10:39:32,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2020-10-09 10:39:32,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 262. [2020-10-09 10:39:32,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 262 states. [2020-10-09 10:39:32,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 671 transitions. [2020-10-09 10:39:32,552 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 671 transitions. Word has length 14 [2020-10-09 10:39:32,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:39:32,552 INFO L481 AbstractCegarLoop]: Abstraction has 262 states and 671 transitions. [2020-10-09 10:39:32,552 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:39:32,552 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 671 transitions. [2020-10-09 10:39:32,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:39:32,552 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:39:32,553 INFO L421 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:39:32,753 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable175,169 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:39:32,753 INFO L429 AbstractCegarLoop]: === Iteration 177 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:39:32,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:39:32,754 INFO L82 PathProgramCache]: Analyzing trace with hash -771662804, now seen corresponding path program 148 times [2020-10-09 10:39:32,754 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:39:32,755 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355681360] [2020-10-09 10:39:32,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:39:32,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:39:32,890 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:39:32,890 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355681360] [2020-10-09 10:39:32,890 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1820250980] [2020-10-09 10:39:32,891 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 170 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 170 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:39:32,942 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-09 10:39:32,942 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:39:32,943 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:39:32,944 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:39:33,133 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:39:33,133 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:39:33,133 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:39:33,133 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868164329] [2020-10-09 10:39:33,134 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:39:33,134 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:39:33,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:39:33,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:39:33,134 INFO L87 Difference]: Start difference. First operand 262 states and 671 transitions. Second operand 17 states. [2020-10-09 10:39:33,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:39:33,320 INFO L93 Difference]: Finished difference Result 278 states and 694 transitions. [2020-10-09 10:39:33,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-09 10:39:33,321 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-09 10:39:33,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:39:33,321 INFO L225 Difference]: With dead ends: 278 [2020-10-09 10:39:33,322 INFO L226 Difference]: Without dead ends: 276 [2020-10-09 10:39:33,322 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=129, Invalid=291, Unknown=0, NotChecked=0, Total=420 [2020-10-09 10:39:33,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2020-10-09 10:39:33,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 262. [2020-10-09 10:39:33,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 262 states. [2020-10-09 10:39:33,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 671 transitions. [2020-10-09 10:39:33,326 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 671 transitions. Word has length 14 [2020-10-09 10:39:33,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:39:33,326 INFO L481 AbstractCegarLoop]: Abstraction has 262 states and 671 transitions. [2020-10-09 10:39:33,326 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:39:33,326 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 671 transitions. [2020-10-09 10:39:33,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:39:33,327 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:39:33,327 INFO L421 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:39:33,527 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable176,170 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:39:33,528 INFO L429 AbstractCegarLoop]: === Iteration 178 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:39:33,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:39:33,528 INFO L82 PathProgramCache]: Analyzing trace with hash -771661843, now seen corresponding path program 149 times [2020-10-09 10:39:33,528 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:39:33,529 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79761657] [2020-10-09 10:39:33,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:39:33,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:39:33,646 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:39:33,647 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79761657] [2020-10-09 10:39:33,647 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1407789573] [2020-10-09 10:39:33,647 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 171 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 171 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:39:33,689 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-09 10:39:33,689 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:39:33,690 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:39:33,690 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:39:33,883 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:39:33,883 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:39:33,883 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:39:33,884 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193643800] [2020-10-09 10:39:33,884 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:39:33,884 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:39:33,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:39:33,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:39:33,884 INFO L87 Difference]: Start difference. First operand 262 states and 671 transitions. Second operand 17 states. [2020-10-09 10:39:34,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:39:34,281 INFO L93 Difference]: Finished difference Result 306 states and 753 transitions. [2020-10-09 10:39:34,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-09 10:39:34,282 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-09 10:39:34,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:39:34,283 INFO L225 Difference]: With dead ends: 306 [2020-10-09 10:39:34,283 INFO L226 Difference]: Without dead ends: 303 [2020-10-09 10:39:34,283 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=204, Invalid=446, Unknown=0, NotChecked=0, Total=650 [2020-10-09 10:39:34,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2020-10-09 10:39:34,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 260. [2020-10-09 10:39:34,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 260 states. [2020-10-09 10:39:34,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 665 transitions. [2020-10-09 10:39:34,287 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 665 transitions. Word has length 14 [2020-10-09 10:39:34,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:39:34,287 INFO L481 AbstractCegarLoop]: Abstraction has 260 states and 665 transitions. [2020-10-09 10:39:34,287 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:39:34,287 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 665 transitions. [2020-10-09 10:39:34,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:39:34,288 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:39:34,288 INFO L421 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:39:34,488 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 171 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable177 [2020-10-09 10:39:34,489 INFO L429 AbstractCegarLoop]: === Iteration 179 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:39:34,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:39:34,489 INFO L82 PathProgramCache]: Analyzing trace with hash -770999714, now seen corresponding path program 150 times [2020-10-09 10:39:34,489 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:39:34,490 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866498989] [2020-10-09 10:39:34,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:39:34,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:39:34,609 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:39:34,609 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866498989] [2020-10-09 10:39:34,610 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1326487000] [2020-10-09 10:39:34,610 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 172 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 172 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:39:34,650 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-09 10:39:34,651 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:39:34,651 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 13 conjunts are in the unsatisfiable core [2020-10-09 10:39:34,652 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:39:34,685 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:39:34,685 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:39:34,685 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2020-10-09 10:39:34,685 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023156708] [2020-10-09 10:39:34,686 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-09 10:39:34,686 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:39:34,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-09 10:39:34,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-10-09 10:39:34,686 INFO L87 Difference]: Start difference. First operand 260 states and 665 transitions. Second operand 11 states. [2020-10-09 10:39:34,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:39:34,869 INFO L93 Difference]: Finished difference Result 269 states and 677 transitions. [2020-10-09 10:39:34,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-09 10:39:34,871 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 14 [2020-10-09 10:39:34,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:39:34,871 INFO L225 Difference]: With dead ends: 269 [2020-10-09 10:39:34,872 INFO L226 Difference]: Without dead ends: 267 [2020-10-09 10:39:34,872 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=93, Invalid=147, Unknown=0, NotChecked=0, Total=240 [2020-10-09 10:39:34,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2020-10-09 10:39:34,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 256. [2020-10-09 10:39:34,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 256 states. [2020-10-09 10:39:34,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 659 transitions. [2020-10-09 10:39:34,876 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 659 transitions. Word has length 14 [2020-10-09 10:39:34,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:39:34,876 INFO L481 AbstractCegarLoop]: Abstraction has 256 states and 659 transitions. [2020-10-09 10:39:34,876 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-09 10:39:34,877 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 659 transitions. [2020-10-09 10:39:34,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:39:34,877 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:39:34,877 INFO L421 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:39:35,086 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable178,172 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:39:35,086 INFO L429 AbstractCegarLoop]: === Iteration 180 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:39:35,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:39:35,087 INFO L82 PathProgramCache]: Analyzing trace with hash -770977394, now seen corresponding path program 151 times [2020-10-09 10:39:35,087 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:39:35,087 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252345430] [2020-10-09 10:39:35,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:39:35,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:39:35,201 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:39:35,201 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252345430] [2020-10-09 10:39:35,201 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1007848313] [2020-10-09 10:39:35,202 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 173 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 173 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:39:35,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:39:35,239 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:39:35,240 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:39:35,415 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-09 10:39:35,454 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:39:35,454 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:39:35,455 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:39:35,455 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476183601] [2020-10-09 10:39:35,455 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:39:35,455 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:39:35,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:39:35,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:39:35,456 INFO L87 Difference]: Start difference. First operand 256 states and 659 transitions. Second operand 17 states. [2020-10-09 10:39:35,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:39:35,984 INFO L93 Difference]: Finished difference Result 298 states and 754 transitions. [2020-10-09 10:39:35,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-09 10:39:35,985 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-09 10:39:35,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:39:35,986 INFO L225 Difference]: With dead ends: 298 [2020-10-09 10:39:35,986 INFO L226 Difference]: Without dead ends: 294 [2020-10-09 10:39:35,986 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=264, Invalid=548, Unknown=0, NotChecked=0, Total=812 [2020-10-09 10:39:35,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2020-10-09 10:39:35,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 257. [2020-10-09 10:39:35,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 257 states. [2020-10-09 10:39:35,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 662 transitions. [2020-10-09 10:39:35,991 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 662 transitions. Word has length 14 [2020-10-09 10:39:35,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:39:35,991 INFO L481 AbstractCegarLoop]: Abstraction has 257 states and 662 transitions. [2020-10-09 10:39:35,991 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:39:35,991 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 662 transitions. [2020-10-09 10:39:35,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:39:35,992 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:39:35,992 INFO L421 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:39:36,201 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 173 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable179 [2020-10-09 10:39:36,202 INFO L429 AbstractCegarLoop]: === Iteration 181 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:39:36,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:39:36,202 INFO L82 PathProgramCache]: Analyzing trace with hash -770969923, now seen corresponding path program 152 times [2020-10-09 10:39:36,202 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:39:36,202 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590909023] [2020-10-09 10:39:36,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:39:36,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:39:36,309 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:39:36,309 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590909023] [2020-10-09 10:39:36,309 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [812888950] [2020-10-09 10:39:36,310 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 174 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 174 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:39:36,345 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-09 10:39:36,345 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:39:36,346 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:39:36,347 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:39:36,559 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:39:36,560 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:39:36,560 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:39:36,560 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741643202] [2020-10-09 10:39:36,560 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:39:36,560 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:39:36,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:39:36,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:39:36,561 INFO L87 Difference]: Start difference. First operand 257 states and 662 transitions. Second operand 17 states. [2020-10-09 10:39:37,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:39:37,072 INFO L93 Difference]: Finished difference Result 313 states and 786 transitions. [2020-10-09 10:39:37,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-09 10:39:37,073 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-09 10:39:37,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:39:37,074 INFO L225 Difference]: With dead ends: 313 [2020-10-09 10:39:37,074 INFO L226 Difference]: Without dead ends: 310 [2020-10-09 10:39:37,074 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=217, Invalid=485, Unknown=0, NotChecked=0, Total=702 [2020-10-09 10:39:37,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2020-10-09 10:39:37,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 259. [2020-10-09 10:39:37,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 259 states. [2020-10-09 10:39:37,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 669 transitions. [2020-10-09 10:39:37,079 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 669 transitions. Word has length 14 [2020-10-09 10:39:37,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:39:37,079 INFO L481 AbstractCegarLoop]: Abstraction has 259 states and 669 transitions. [2020-10-09 10:39:37,079 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:39:37,080 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 669 transitions. [2020-10-09 10:39:37,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:39:37,080 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:39:37,080 INFO L421 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:39:37,289 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable180,174 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:39:37,289 INFO L429 AbstractCegarLoop]: === Iteration 182 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:39:37,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:39:37,290 INFO L82 PathProgramCache]: Analyzing trace with hash -770948564, now seen corresponding path program 153 times [2020-10-09 10:39:37,290 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:39:37,290 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132625501] [2020-10-09 10:39:37,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:39:37,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:39:37,403 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:39:37,403 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132625501] [2020-10-09 10:39:37,404 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1003144974] [2020-10-09 10:39:37,404 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 175 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 175 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:39:37,442 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-09 10:39:37,443 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:39:37,444 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:39:37,445 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:39:37,626 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 10:39:37,665 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:39:37,666 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:39:37,666 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:39:37,666 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120411680] [2020-10-09 10:39:37,666 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:39:37,666 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:39:37,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:39:37,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=183, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:39:37,667 INFO L87 Difference]: Start difference. First operand 259 states and 669 transitions. Second operand 17 states. [2020-10-09 10:39:38,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:39:38,337 INFO L93 Difference]: Finished difference Result 314 states and 795 transitions. [2020-10-09 10:39:38,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-09 10:39:38,338 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-09 10:39:38,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:39:38,339 INFO L225 Difference]: With dead ends: 314 [2020-10-09 10:39:38,339 INFO L226 Difference]: Without dead ends: 309 [2020-10-09 10:39:38,339 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=311, Invalid=619, Unknown=0, NotChecked=0, Total=930 [2020-10-09 10:39:38,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2020-10-09 10:39:38,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 259. [2020-10-09 10:39:38,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 259 states. [2020-10-09 10:39:38,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 668 transitions. [2020-10-09 10:39:38,344 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 668 transitions. Word has length 14 [2020-10-09 10:39:38,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:39:38,344 INFO L481 AbstractCegarLoop]: Abstraction has 259 states and 668 transitions. [2020-10-09 10:39:38,344 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:39:38,344 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 668 transitions. [2020-10-09 10:39:38,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:39:38,344 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:39:38,344 INFO L421 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:39:38,546 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable181,175 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:39:38,547 INFO L429 AbstractCegarLoop]: === Iteration 183 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:39:38,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:39:38,547 INFO L82 PathProgramCache]: Analyzing trace with hash -770947603, now seen corresponding path program 154 times [2020-10-09 10:39:38,548 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:39:38,548 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740699474] [2020-10-09 10:39:38,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:39:38,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:39:38,656 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:39:38,656 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740699474] [2020-10-09 10:39:38,657 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [291459093] [2020-10-09 10:39:38,657 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 176 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 176 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:39:38,696 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-09 10:39:38,696 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:39:38,697 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:39:38,697 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:39:38,866 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-09 10:39:38,895 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:39:38,896 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:39:38,896 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:39:38,896 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573743459] [2020-10-09 10:39:38,896 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:39:38,897 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:39:38,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:39:38,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:39:38,898 INFO L87 Difference]: Start difference. First operand 259 states and 668 transitions. Second operand 17 states. [2020-10-09 10:39:39,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:39:39,446 INFO L93 Difference]: Finished difference Result 333 states and 837 transitions. [2020-10-09 10:39:39,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-09 10:39:39,447 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-09 10:39:39,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:39:39,448 INFO L225 Difference]: With dead ends: 333 [2020-10-09 10:39:39,448 INFO L226 Difference]: Without dead ends: 328 [2020-10-09 10:39:39,448 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=264, Invalid=548, Unknown=0, NotChecked=0, Total=812 [2020-10-09 10:39:39,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2020-10-09 10:39:39,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 259. [2020-10-09 10:39:39,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 259 states. [2020-10-09 10:39:39,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 671 transitions. [2020-10-09 10:39:39,452 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 671 transitions. Word has length 14 [2020-10-09 10:39:39,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:39:39,452 INFO L481 AbstractCegarLoop]: Abstraction has 259 states and 671 transitions. [2020-10-09 10:39:39,452 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:39:39,453 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 671 transitions. [2020-10-09 10:39:39,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:39:39,453 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:39:39,453 INFO L421 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:39:39,663 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 176 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable182 [2020-10-09 10:39:39,664 INFO L429 AbstractCegarLoop]: === Iteration 184 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:39:39,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:39:39,664 INFO L82 PathProgramCache]: Analyzing trace with hash -770739283, now seen corresponding path program 155 times [2020-10-09 10:39:39,664 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:39:39,665 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826127435] [2020-10-09 10:39:39,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:39:39,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:39:39,765 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:39:39,765 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826127435] [2020-10-09 10:39:39,765 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2118151878] [2020-10-09 10:39:39,765 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 177 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 177 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:39:39,807 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-09 10:39:39,807 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:39:39,808 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:39:39,808 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:39:40,761 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:39:40,761 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:39:40,761 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:39:40,761 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672215097] [2020-10-09 10:39:40,761 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:39:40,762 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:39:40,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:39:40,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:39:40,762 INFO L87 Difference]: Start difference. First operand 259 states and 671 transitions. Second operand 17 states. [2020-10-09 10:39:41,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:39:41,237 INFO L93 Difference]: Finished difference Result 350 states and 873 transitions. [2020-10-09 10:39:41,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-09 10:39:41,237 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-09 10:39:41,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:39:41,238 INFO L225 Difference]: With dead ends: 350 [2020-10-09 10:39:41,238 INFO L226 Difference]: Without dead ends: 346 [2020-10-09 10:39:41,238 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=201, Invalid=501, Unknown=0, NotChecked=0, Total=702 [2020-10-09 10:39:41,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2020-10-09 10:39:41,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 261. [2020-10-09 10:39:41,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2020-10-09 10:39:41,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 678 transitions. [2020-10-09 10:39:41,242 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 678 transitions. Word has length 14 [2020-10-09 10:39:41,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:39:41,242 INFO L481 AbstractCegarLoop]: Abstraction has 261 states and 678 transitions. [2020-10-09 10:39:41,242 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:39:41,242 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 678 transitions. [2020-10-09 10:39:41,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:39:41,242 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:39:41,242 INFO L421 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:39:41,443 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable183,177 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:39:41,443 INFO L429 AbstractCegarLoop]: === Iteration 185 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:39:41,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:39:41,444 INFO L82 PathProgramCache]: Analyzing trace with hash -770076193, now seen corresponding path program 156 times [2020-10-09 10:39:41,444 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:39:41,444 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880247648] [2020-10-09 10:39:41,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:39:41,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:39:41,556 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:39:41,556 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880247648] [2020-10-09 10:39:41,557 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1956672667] [2020-10-09 10:39:41,557 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 178 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 178 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:39:41,596 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-09 10:39:41,596 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:39:41,596 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:39:41,597 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:39:41,852 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:39:41,853 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:39:41,853 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:39:41,853 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941709641] [2020-10-09 10:39:41,853 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:39:41,853 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:39:41,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:39:41,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:39:41,854 INFO L87 Difference]: Start difference. First operand 261 states and 678 transitions. Second operand 17 states. [2020-10-09 10:39:42,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:39:42,510 INFO L93 Difference]: Finished difference Result 362 states and 911 transitions. [2020-10-09 10:39:42,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-09 10:39:42,511 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-09 10:39:42,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:39:42,512 INFO L225 Difference]: With dead ends: 362 [2020-10-09 10:39:42,512 INFO L226 Difference]: Without dead ends: 358 [2020-10-09 10:39:42,512 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 163 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=272, Invalid=598, Unknown=0, NotChecked=0, Total=870 [2020-10-09 10:39:42,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2020-10-09 10:39:42,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 265. [2020-10-09 10:39:42,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 265 states. [2020-10-09 10:39:42,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 692 transitions. [2020-10-09 10:39:42,516 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 692 transitions. Word has length 14 [2020-10-09 10:39:42,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:39:42,516 INFO L481 AbstractCegarLoop]: Abstraction has 265 states and 692 transitions. [2020-10-09 10:39:42,517 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:39:42,517 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 692 transitions. [2020-10-09 10:39:42,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:39:42,517 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:39:42,517 INFO L421 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:39:42,717 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable184,178 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:39:42,718 INFO L429 AbstractCegarLoop]: === Iteration 186 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:39:42,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:39:42,718 INFO L82 PathProgramCache]: Analyzing trace with hash -770054834, now seen corresponding path program 157 times [2020-10-09 10:39:42,718 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:39:42,719 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26858043] [2020-10-09 10:39:42,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:39:42,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:39:42,819 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:39:42,819 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26858043] [2020-10-09 10:39:42,819 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [985540705] [2020-10-09 10:39:42,819 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 179 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 179 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:39:42,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:39:42,859 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:39:42,859 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:39:43,048 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 10:39:43,093 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:39:43,094 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:39:43,094 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:39:43,094 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441727601] [2020-10-09 10:39:43,095 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:39:43,095 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:39:43,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:39:43,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=181, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:39:43,095 INFO L87 Difference]: Start difference. First operand 265 states and 692 transitions. Second operand 17 states. [2020-10-09 10:39:43,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:39:43,909 INFO L93 Difference]: Finished difference Result 322 states and 822 transitions. [2020-10-09 10:39:43,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-09 10:39:43,909 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-09 10:39:43,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:39:43,910 INFO L225 Difference]: With dead ends: 322 [2020-10-09 10:39:43,910 INFO L226 Difference]: Without dead ends: 316 [2020-10-09 10:39:43,910 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 214 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=358, Invalid=698, Unknown=0, NotChecked=0, Total=1056 [2020-10-09 10:39:43,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2020-10-09 10:39:43,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 265. [2020-10-09 10:39:43,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 265 states. [2020-10-09 10:39:43,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 690 transitions. [2020-10-09 10:39:43,915 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 690 transitions. Word has length 14 [2020-10-09 10:39:43,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:39:43,915 INFO L481 AbstractCegarLoop]: Abstraction has 265 states and 690 transitions. [2020-10-09 10:39:43,915 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:39:43,915 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 690 transitions. [2020-10-09 10:39:43,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:39:43,916 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:39:43,916 INFO L421 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:39:44,116 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable185,179 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:39:44,116 INFO L429 AbstractCegarLoop]: === Iteration 187 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:39:44,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:39:44,117 INFO L82 PathProgramCache]: Analyzing trace with hash -770053873, now seen corresponding path program 158 times [2020-10-09 10:39:44,117 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:39:44,117 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293840596] [2020-10-09 10:39:44,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:39:44,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:39:44,233 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:39:44,233 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293840596] [2020-10-09 10:39:44,233 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1583533979] [2020-10-09 10:39:44,234 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 180 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 180 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:39:44,278 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-09 10:39:44,279 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:39:44,279 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:39:44,280 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:39:46,511 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 10:39:46,562 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:39:46,562 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:39:46,562 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:39:46,563 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728812986] [2020-10-09 10:39:46,563 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:39:46,563 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:39:46,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:39:46,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=185, Unknown=1, NotChecked=0, Total=272 [2020-10-09 10:39:46,563 INFO L87 Difference]: Start difference. First operand 265 states and 690 transitions. Second operand 17 states. [2020-10-09 10:39:50,873 WARN L193 SmtUtils]: Spent 4.09 s on a formula simplification. DAG size of input: 39 DAG size of output: 35 [2020-10-09 10:39:53,164 WARN L193 SmtUtils]: Spent 2.20 s on a formula simplification. DAG size of input: 42 DAG size of output: 38 [2020-10-09 10:39:57,281 WARN L193 SmtUtils]: Spent 4.08 s on a formula simplification. DAG size of input: 44 DAG size of output: 38 [2020-10-09 10:39:58,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:39:58,055 INFO L93 Difference]: Finished difference Result 395 states and 997 transitions. [2020-10-09 10:39:58,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-09 10:39:58,056 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-09 10:39:58,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:39:58,056 INFO L225 Difference]: With dead ends: 395 [2020-10-09 10:39:58,057 INFO L226 Difference]: Without dead ends: 386 [2020-10-09 10:39:58,057 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 265 ImplicationChecksByTransitivity, 13.4s TimeCoverageRelationStatistics Valid=370, Invalid=819, Unknown=1, NotChecked=0, Total=1190 [2020-10-09 10:39:58,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386 states. [2020-10-09 10:39:58,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386 to 262. [2020-10-09 10:39:58,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 262 states. [2020-10-09 10:39:58,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 685 transitions. [2020-10-09 10:39:58,063 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 685 transitions. Word has length 14 [2020-10-09 10:39:58,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:39:58,063 INFO L481 AbstractCegarLoop]: Abstraction has 262 states and 685 transitions. [2020-10-09 10:39:58,063 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:39:58,063 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 685 transitions. [2020-10-09 10:39:58,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:39:58,064 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:39:58,064 INFO L421 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:39:58,274 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable186,180 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:39:58,274 INFO L429 AbstractCegarLoop]: === Iteration 188 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:39:58,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:39:58,275 INFO L82 PathProgramCache]: Analyzing trace with hash -770025043, now seen corresponding path program 159 times [2020-10-09 10:39:58,275 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:39:58,275 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807290477] [2020-10-09 10:39:58,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:39:58,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:39:58,385 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:39:58,386 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807290477] [2020-10-09 10:39:58,386 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [435039607] [2020-10-09 10:39:58,386 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 181 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 181 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:39:58,425 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-09 10:39:58,426 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:39:58,427 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:39:58,427 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:39:58,625 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 10:39:58,672 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:39:58,672 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:39:58,672 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:39:58,672 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91374747] [2020-10-09 10:39:58,672 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:39:58,673 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:39:58,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:39:58,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=186, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:39:58,673 INFO L87 Difference]: Start difference. First operand 262 states and 685 transitions. Second operand 17 states. [2020-10-09 10:39:59,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:39:59,500 INFO L93 Difference]: Finished difference Result 358 states and 909 transitions. [2020-10-09 10:39:59,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-09 10:39:59,501 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-09 10:39:59,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:39:59,502 INFO L225 Difference]: With dead ends: 358 [2020-10-09 10:39:59,502 INFO L226 Difference]: Without dead ends: 353 [2020-10-09 10:39:59,503 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=338, Invalid=718, Unknown=0, NotChecked=0, Total=1056 [2020-10-09 10:39:59,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353 states. [2020-10-09 10:39:59,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353 to 262. [2020-10-09 10:39:59,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 262 states. [2020-10-09 10:39:59,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 685 transitions. [2020-10-09 10:39:59,507 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 685 transitions. Word has length 14 [2020-10-09 10:39:59,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:39:59,507 INFO L481 AbstractCegarLoop]: Abstraction has 262 states and 685 transitions. [2020-10-09 10:39:59,507 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:39:59,507 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 685 transitions. [2020-10-09 10:39:59,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:39:59,508 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:39:59,508 INFO L421 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:39:59,710 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable187,181 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:39:59,711 INFO L429 AbstractCegarLoop]: === Iteration 189 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:39:59,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:39:59,711 INFO L82 PathProgramCache]: Analyzing trace with hash -763589443, now seen corresponding path program 160 times [2020-10-09 10:39:59,711 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:39:59,711 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650635069] [2020-10-09 10:39:59,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:39:59,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:39:59,820 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:39:59,820 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650635069] [2020-10-09 10:39:59,821 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2135814363] [2020-10-09 10:39:59,821 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 182 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 182 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:39:59,865 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-09 10:39:59,865 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:39:59,866 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:39:59,866 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:40:00,135 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:40:00,135 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:40:00,135 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:40:00,136 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935509734] [2020-10-09 10:40:00,136 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:40:00,136 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:40:00,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:40:00,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:40:00,136 INFO L87 Difference]: Start difference. First operand 262 states and 685 transitions. Second operand 17 states. [2020-10-09 10:40:00,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:40:00,628 INFO L93 Difference]: Finished difference Result 350 states and 871 transitions. [2020-10-09 10:40:00,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-09 10:40:00,630 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-09 10:40:00,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:40:00,638 INFO L225 Difference]: With dead ends: 350 [2020-10-09 10:40:00,638 INFO L226 Difference]: Without dead ends: 347 [2020-10-09 10:40:00,639 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=193, Invalid=509, Unknown=0, NotChecked=0, Total=702 [2020-10-09 10:40:00,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2020-10-09 10:40:00,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 265. [2020-10-09 10:40:00,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 265 states. [2020-10-09 10:40:00,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 696 transitions. [2020-10-09 10:40:00,642 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 696 transitions. Word has length 14 [2020-10-09 10:40:00,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:40:00,642 INFO L481 AbstractCegarLoop]: Abstraction has 265 states and 696 transitions. [2020-10-09 10:40:00,642 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:40:00,643 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 696 transitions. [2020-10-09 10:40:00,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:40:00,643 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:40:00,643 INFO L421 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:40:00,843 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable188,182 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:40:00,844 INFO L429 AbstractCegarLoop]: === Iteration 190 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:40:00,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:40:00,844 INFO L82 PathProgramCache]: Analyzing trace with hash -763588482, now seen corresponding path program 161 times [2020-10-09 10:40:00,845 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:40:00,845 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214621490] [2020-10-09 10:40:00,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:40:00,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:40:00,949 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:40:00,950 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214621490] [2020-10-09 10:40:00,950 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [159769780] [2020-10-09 10:40:00,950 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 183 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 183 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:40:01,030 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-09 10:40:01,030 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:40:01,032 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:40:01,032 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:40:05,155 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:40:05,156 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:40:05,156 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:40:05,156 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749615245] [2020-10-09 10:40:05,156 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:40:05,157 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:40:05,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:40:05,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=212, Unknown=1, NotChecked=0, Total=272 [2020-10-09 10:40:05,157 INFO L87 Difference]: Start difference. First operand 265 states and 696 transitions. Second operand 17 states. [2020-10-09 10:40:09,492 WARN L193 SmtUtils]: Spent 4.11 s on a formula simplification. DAG size of input: 41 DAG size of output: 37 [2020-10-09 10:40:15,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:40:15,941 INFO L93 Difference]: Finished difference Result 380 states and 945 transitions. [2020-10-09 10:40:15,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-09 10:40:15,942 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-09 10:40:15,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:40:15,943 INFO L225 Difference]: With dead ends: 380 [2020-10-09 10:40:15,943 INFO L226 Difference]: Without dead ends: 375 [2020-10-09 10:40:15,943 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 8.6s TimeCoverageRelationStatistics Valid=193, Invalid=508, Unknown=1, NotChecked=0, Total=702 [2020-10-09 10:40:15,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2020-10-09 10:40:15,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 266. [2020-10-09 10:40:15,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 266 states. [2020-10-09 10:40:15,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 698 transitions. [2020-10-09 10:40:15,948 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 698 transitions. Word has length 14 [2020-10-09 10:40:15,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:40:15,948 INFO L481 AbstractCegarLoop]: Abstraction has 266 states and 698 transitions. [2020-10-09 10:40:15,949 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:40:15,949 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 698 transitions. [2020-10-09 10:40:15,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:40:15,949 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:40:15,949 INFO L421 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:40:16,150 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 183 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable189 [2020-10-09 10:40:16,150 INFO L429 AbstractCegarLoop]: === Iteration 191 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:40:16,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:40:16,151 INFO L82 PathProgramCache]: Analyzing trace with hash -763559652, now seen corresponding path program 162 times [2020-10-09 10:40:16,151 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:40:16,151 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967127996] [2020-10-09 10:40:16,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:40:16,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:40:16,264 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:40:16,265 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967127996] [2020-10-09 10:40:16,265 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [471353704] [2020-10-09 10:40:16,265 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 184 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 184 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:40:16,305 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-09 10:40:16,306 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:40:16,307 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:40:16,307 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:40:16,597 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:40:16,597 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:40:16,597 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:40:16,597 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928967615] [2020-10-09 10:40:16,597 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:40:16,598 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:40:16,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:40:16,598 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:40:16,598 INFO L87 Difference]: Start difference. First operand 266 states and 698 transitions. Second operand 17 states. [2020-10-09 10:40:17,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:40:17,126 INFO L93 Difference]: Finished difference Result 366 states and 912 transitions. [2020-10-09 10:40:17,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-09 10:40:17,127 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-09 10:40:17,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:40:17,128 INFO L225 Difference]: With dead ends: 366 [2020-10-09 10:40:17,128 INFO L226 Difference]: Without dead ends: 362 [2020-10-09 10:40:17,128 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=192, Invalid=510, Unknown=0, NotChecked=0, Total=702 [2020-10-09 10:40:17,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2020-10-09 10:40:17,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 264. [2020-10-09 10:40:17,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 264 states. [2020-10-09 10:40:17,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 692 transitions. [2020-10-09 10:40:17,132 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 692 transitions. Word has length 14 [2020-10-09 10:40:17,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:40:17,132 INFO L481 AbstractCegarLoop]: Abstraction has 264 states and 692 transitions. [2020-10-09 10:40:17,132 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:40:17,133 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 692 transitions. [2020-10-09 10:40:17,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:40:17,133 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:40:17,133 INFO L421 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:40:17,336 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 184 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable190 [2020-10-09 10:40:17,336 INFO L429 AbstractCegarLoop]: === Iteration 192 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:40:17,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:40:17,337 INFO L82 PathProgramCache]: Analyzing trace with hash -743033653, now seen corresponding path program 163 times [2020-10-09 10:40:17,338 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:40:17,338 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860134902] [2020-10-09 10:40:17,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:40:17,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:40:17,450 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:40:17,450 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860134902] [2020-10-09 10:40:17,451 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [778108404] [2020-10-09 10:40:17,451 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 185 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 185 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:40:17,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:40:17,489 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:40:17,489 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:40:20,147 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:40:20,148 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:40:20,148 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:40:20,148 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762799388] [2020-10-09 10:40:20,148 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:40:20,148 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:40:20,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:40:20,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:40:20,149 INFO L87 Difference]: Start difference. First operand 264 states and 692 transitions. Second operand 17 states. [2020-10-09 10:40:20,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:40:20,926 INFO L93 Difference]: Finished difference Result 357 states and 890 transitions. [2020-10-09 10:40:20,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-09 10:40:20,928 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-09 10:40:20,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:40:20,929 INFO L225 Difference]: With dead ends: 357 [2020-10-09 10:40:20,929 INFO L226 Difference]: Without dead ends: 354 [2020-10-09 10:40:20,929 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 209 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=290, Invalid=702, Unknown=0, NotChecked=0, Total=992 [2020-10-09 10:40:20,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2020-10-09 10:40:20,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 266. [2020-10-09 10:40:20,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 266 states. [2020-10-09 10:40:20,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 700 transitions. [2020-10-09 10:40:20,934 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 700 transitions. Word has length 14 [2020-10-09 10:40:20,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:40:20,934 INFO L481 AbstractCegarLoop]: Abstraction has 266 states and 700 transitions. [2020-10-09 10:40:20,934 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:40:20,934 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 700 transitions. [2020-10-09 10:40:20,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:40:20,935 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:40:20,935 INFO L421 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:40:21,137 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 185 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable191 [2020-10-09 10:40:21,138 INFO L429 AbstractCegarLoop]: === Iteration 193 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:40:21,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:40:21,139 INFO L82 PathProgramCache]: Analyzing trace with hash -743032692, now seen corresponding path program 164 times [2020-10-09 10:40:21,139 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:40:21,139 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423207471] [2020-10-09 10:40:21,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:40:21,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:40:21,248 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:40:21,249 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423207471] [2020-10-09 10:40:21,249 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2008489363] [2020-10-09 10:40:21,249 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 186 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 186 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:40:21,287 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-09 10:40:21,287 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:40:21,288 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:40:21,289 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:40:23,219 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:40:23,220 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:40:23,220 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:40:23,220 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85167023] [2020-10-09 10:40:23,220 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:40:23,220 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:40:23,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:40:23,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:40:23,221 INFO L87 Difference]: Start difference. First operand 266 states and 700 transitions. Second operand 17 states. [2020-10-09 10:40:27,641 WARN L193 SmtUtils]: Spent 4.10 s on a formula simplification. DAG size of input: 41 DAG size of output: 37 [2020-10-09 10:40:42,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:40:42,429 INFO L93 Difference]: Finished difference Result 401 states and 995 transitions. [2020-10-09 10:40:42,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-09 10:40:42,430 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-09 10:40:42,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:40:42,431 INFO L225 Difference]: With dead ends: 401 [2020-10-09 10:40:42,431 INFO L226 Difference]: Without dead ends: 396 [2020-10-09 10:40:42,431 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 214 ImplicationChecksByTransitivity, 14.8s TimeCoverageRelationStatistics Valid=289, Invalid=699, Unknown=4, NotChecked=0, Total=992 [2020-10-09 10:40:42,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396 states. [2020-10-09 10:40:42,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396 to 269. [2020-10-09 10:40:42,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 269 states. [2020-10-09 10:40:42,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 709 transitions. [2020-10-09 10:40:42,436 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 709 transitions. Word has length 14 [2020-10-09 10:40:42,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:40:42,437 INFO L481 AbstractCegarLoop]: Abstraction has 269 states and 709 transitions. [2020-10-09 10:40:42,437 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:40:42,437 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 709 transitions. [2020-10-09 10:40:42,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:40:42,437 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:40:42,437 INFO L421 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:40:42,637 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable192,186 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:40:42,638 INFO L429 AbstractCegarLoop]: === Iteration 194 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:40:42,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:40:42,638 INFO L82 PathProgramCache]: Analyzing trace with hash -742370563, now seen corresponding path program 165 times [2020-10-09 10:40:42,639 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:40:42,639 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748806068] [2020-10-09 10:40:42,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:40:42,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:40:42,754 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:40:42,754 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748806068] [2020-10-09 10:40:42,755 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1321272810] [2020-10-09 10:40:42,755 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 187 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 187 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:40:42,793 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-09 10:40:42,793 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:40:42,794 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:40:42,795 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:40:43,061 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:40:43,061 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:40:43,061 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:40:43,062 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780678735] [2020-10-09 10:40:43,062 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:40:43,062 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:40:43,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:40:43,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:40:43,062 INFO L87 Difference]: Start difference. First operand 269 states and 709 transitions. Second operand 17 states. [2020-10-09 10:40:43,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:40:43,882 INFO L93 Difference]: Finished difference Result 352 states and 890 transitions. [2020-10-09 10:40:43,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-09 10:40:43,883 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-09 10:40:43,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:40:43,884 INFO L225 Difference]: With dead ends: 352 [2020-10-09 10:40:43,884 INFO L226 Difference]: Without dead ends: 349 [2020-10-09 10:40:43,884 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=313, Invalid=679, Unknown=0, NotChecked=0, Total=992 [2020-10-09 10:40:43,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2020-10-09 10:40:43,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 271. [2020-10-09 10:40:43,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 271 states. [2020-10-09 10:40:43,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 716 transitions. [2020-10-09 10:40:43,888 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 716 transitions. Word has length 14 [2020-10-09 10:40:43,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:40:43,888 INFO L481 AbstractCegarLoop]: Abstraction has 271 states and 716 transitions. [2020-10-09 10:40:43,888 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:40:43,888 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 716 transitions. [2020-10-09 10:40:43,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:40:43,888 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:40:43,888 INFO L421 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:40:44,089 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable193,187 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:40:44,089 INFO L429 AbstractCegarLoop]: === Iteration 195 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:40:44,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:40:44,090 INFO L82 PathProgramCache]: Analyzing trace with hash -742349204, now seen corresponding path program 166 times [2020-10-09 10:40:44,090 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:40:44,090 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895995497] [2020-10-09 10:40:44,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:40:44,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:40:44,202 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:40:44,203 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895995497] [2020-10-09 10:40:44,203 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1788287943] [2020-10-09 10:40:44,203 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 188 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 188 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:40:44,240 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-09 10:40:44,241 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:40:44,241 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:40:44,242 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:40:44,456 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 10:40:44,503 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:40:44,503 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:40:44,503 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:40:44,504 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631282437] [2020-10-09 10:40:44,504 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:40:44,504 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:40:44,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:40:44,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=185, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:40:44,504 INFO L87 Difference]: Start difference. First operand 271 states and 716 transitions. Second operand 17 states. [2020-10-09 10:40:45,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:40:45,508 INFO L93 Difference]: Finished difference Result 323 states and 827 transitions. [2020-10-09 10:40:45,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-09 10:40:45,509 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-09 10:40:45,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:40:45,509 INFO L225 Difference]: With dead ends: 323 [2020-10-09 10:40:45,509 INFO L226 Difference]: Without dead ends: 316 [2020-10-09 10:40:45,510 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 275 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=394, Invalid=796, Unknown=0, NotChecked=0, Total=1190 [2020-10-09 10:40:45,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2020-10-09 10:40:45,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 271. [2020-10-09 10:40:45,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 271 states. [2020-10-09 10:40:45,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 713 transitions. [2020-10-09 10:40:45,514 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 713 transitions. Word has length 14 [2020-10-09 10:40:45,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:40:45,515 INFO L481 AbstractCegarLoop]: Abstraction has 271 states and 713 transitions. [2020-10-09 10:40:45,515 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:40:45,515 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 713 transitions. [2020-10-09 10:40:45,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:40:45,515 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:40:45,515 INFO L421 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:40:45,715 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 188 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable194 [2020-10-09 10:40:45,716 INFO L429 AbstractCegarLoop]: === Iteration 196 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:40:45,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:40:45,716 INFO L82 PathProgramCache]: Analyzing trace with hash -742348243, now seen corresponding path program 167 times [2020-10-09 10:40:45,717 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:40:45,717 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14241682] [2020-10-09 10:40:45,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:40:45,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:40:45,839 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:40:45,840 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14241682] [2020-10-09 10:40:45,840 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1331573544] [2020-10-09 10:40:45,840 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 189 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 189 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:40:45,879 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-09 10:40:45,879 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:40:45,880 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:40:45,880 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:40:46,121 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-09 10:40:46,123 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-09 10:40:46,123 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-09 10:40:46,124 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-09 10:40:46,126 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-09 10:40:46,127 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-09 10:40:46,128 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-09 10:40:46,129 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-09 10:40:46,199 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:40:46,200 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:40:46,200 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:40:46,200 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501170738] [2020-10-09 10:40:46,201 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:40:46,201 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:40:46,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:40:46,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=186, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:40:46,202 INFO L87 Difference]: Start difference. First operand 271 states and 713 transitions. Second operand 17 states. [2020-10-09 10:40:47,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:40:47,433 INFO L93 Difference]: Finished difference Result 384 states and 973 transitions. [2020-10-09 10:40:47,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-09 10:40:47,434 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-09 10:40:47,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:40:47,435 INFO L225 Difference]: With dead ends: 384 [2020-10-09 10:40:47,435 INFO L226 Difference]: Without dead ends: 379 [2020-10-09 10:40:47,435 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 324 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=411, Invalid=921, Unknown=0, NotChecked=0, Total=1332 [2020-10-09 10:40:47,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2020-10-09 10:40:47,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 269. [2020-10-09 10:40:47,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 269 states. [2020-10-09 10:40:47,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 707 transitions. [2020-10-09 10:40:47,439 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 707 transitions. Word has length 14 [2020-10-09 10:40:47,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:40:47,439 INFO L481 AbstractCegarLoop]: Abstraction has 269 states and 707 transitions. [2020-10-09 10:40:47,439 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:40:47,440 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 707 transitions. [2020-10-09 10:40:47,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:40:47,440 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:40:47,440 INFO L421 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:40:47,640 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable195,189 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:40:47,641 INFO L429 AbstractCegarLoop]: === Iteration 197 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:40:47,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:40:47,641 INFO L82 PathProgramCache]: Analyzing trace with hash -742340772, now seen corresponding path program 168 times [2020-10-09 10:40:47,642 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:40:47,642 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014403863] [2020-10-09 10:40:47,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:40:47,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:40:47,762 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:40:47,762 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014403863] [2020-10-09 10:40:47,763 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [341005192] [2020-10-09 10:40:47,763 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 190 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 190 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:40:47,803 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-10-09 10:40:47,803 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:40:47,804 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:40:47,805 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:40:51,090 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:40:51,090 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:40:51,090 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:40:51,090 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745540126] [2020-10-09 10:40:51,091 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:40:51,091 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:40:51,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:40:51,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=196, Unknown=1, NotChecked=0, Total=272 [2020-10-09 10:40:51,091 INFO L87 Difference]: Start difference. First operand 269 states and 707 transitions. Second operand 17 states. [2020-10-09 10:40:55,457 WARN L193 SmtUtils]: Spent 4.10 s on a formula simplification. DAG size of input: 38 DAG size of output: 34 [2020-10-09 10:40:59,711 WARN L193 SmtUtils]: Spent 4.10 s on a formula simplification. DAG size of input: 41 DAG size of output: 37 [2020-10-09 10:41:00,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:41:00,400 INFO L93 Difference]: Finished difference Result 403 states and 1011 transitions. [2020-10-09 10:41:00,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-09 10:41:00,402 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-09 10:41:00,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:41:00,403 INFO L225 Difference]: With dead ends: 403 [2020-10-09 10:41:00,403 INFO L226 Difference]: Without dead ends: 398 [2020-10-09 10:41:00,403 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 294 ImplicationChecksByTransitivity, 12.3s TimeCoverageRelationStatistics Valid=348, Invalid=841, Unknown=1, NotChecked=0, Total=1190 [2020-10-09 10:41:00,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 398 states. [2020-10-09 10:41:00,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 398 to 273. [2020-10-09 10:41:00,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 273 states. [2020-10-09 10:41:00,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 721 transitions. [2020-10-09 10:41:00,408 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 721 transitions. Word has length 14 [2020-10-09 10:41:00,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:41:00,408 INFO L481 AbstractCegarLoop]: Abstraction has 273 states and 721 transitions. [2020-10-09 10:41:00,408 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:41:00,408 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 721 transitions. [2020-10-09 10:41:00,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:41:00,408 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:41:00,408 INFO L421 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:41:00,609 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 190 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable196 [2020-10-09 10:41:00,609 INFO L429 AbstractCegarLoop]: === Iteration 198 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:41:00,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:41:00,610 INFO L82 PathProgramCache]: Analyzing trace with hash -742319413, now seen corresponding path program 169 times [2020-10-09 10:41:00,610 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:41:00,610 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343417852] [2020-10-09 10:41:00,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:41:00,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:41:00,744 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:41:00,745 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343417852] [2020-10-09 10:41:00,745 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [740391900] [2020-10-09 10:41:00,745 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 191 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 191 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:41:00,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:41:00,784 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:41:00,784 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:41:04,061 WARN L860 $PredicateComparison]: unable to prove that (exists ((aux_div_aux_mod_v_~j~0_491_43_92 Int) (v_~i~0_529 Int) (aux_div_v_~j~0_491_43 Int)) (let ((.cse1 (* 2 aux_div_aux_mod_v_~j~0_491_43_92)) (.cse0 (* 2 aux_div_v_~j~0_491_43))) (and (<= aux_div_v_~j~0_491_43 1) (<= (+ c_~j~0 .cse0) (* 2 v_~i~0_529)) (<= (+ .cse1 .cse0 1) v_~i~0_529) (<= c_~i~0 (+ v_~i~0_529 c_~j~0)) (<= aux_div_aux_mod_v_~j~0_491_43_92 1) (<= c_~j~0 (+ .cse1 v_~i~0_529 2)) (<= v_~i~0_529 (+ .cse1 .cse0 3))))) is different from true [2020-10-09 10:41:04,065 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 10:41:04,067 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-09 10:41:04,129 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:41:04,129 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:41:04,130 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:41:04,130 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034687912] [2020-10-09 10:41:04,130 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:41:04,130 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:41:04,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:41:04,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=162, Unknown=2, NotChecked=28, Total=272 [2020-10-09 10:41:04,130 INFO L87 Difference]: Start difference. First operand 273 states and 721 transitions. Second operand 17 states. [2020-10-09 10:41:04,529 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 37 [2020-10-09 10:41:08,678 WARN L193 SmtUtils]: Spent 4.10 s on a formula simplification. DAG size of input: 38 DAG size of output: 34 [2020-10-09 10:41:15,252 WARN L193 SmtUtils]: Spent 4.10 s on a formula simplification. DAG size of input: 43 DAG size of output: 37 [2020-10-09 10:41:21,446 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 40 [2020-10-09 10:41:26,728 WARN L193 SmtUtils]: Spent 2.54 s on a formula simplification. DAG size of input: 35 DAG size of output: 32 [2020-10-09 10:41:34,860 WARN L193 SmtUtils]: Spent 1.09 s on a formula simplification. DAG size of input: 39 DAG size of output: 36 [2020-10-09 10:41:44,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:41:44,072 INFO L93 Difference]: Finished difference Result 441 states and 1132 transitions. [2020-10-09 10:41:44,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-09 10:41:44,073 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-09 10:41:44,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:41:44,074 INFO L225 Difference]: With dead ends: 441 [2020-10-09 10:41:44,074 INFO L226 Difference]: Without dead ends: 434 [2020-10-09 10:41:44,074 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 5 SyntacticMatches, 9 SemanticMatches, 39 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 501 ImplicationChecksByTransitivity, 43.0s TimeCoverageRelationStatistics Valid=482, Invalid=1060, Unknown=22, NotChecked=76, Total=1640 [2020-10-09 10:41:44,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2020-10-09 10:41:44,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 274. [2020-10-09 10:41:44,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 274 states. [2020-10-09 10:41:44,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 726 transitions. [2020-10-09 10:41:44,079 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 726 transitions. Word has length 14 [2020-10-09 10:41:44,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:41:44,079 INFO L481 AbstractCegarLoop]: Abstraction has 274 states and 726 transitions. [2020-10-09 10:41:44,079 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:41:44,079 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 726 transitions. [2020-10-09 10:41:44,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:41:44,080 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:41:44,080 INFO L421 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:41:44,280 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable197,191 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:41:44,280 INFO L429 AbstractCegarLoop]: === Iteration 199 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:41:44,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:41:44,281 INFO L82 PathProgramCache]: Analyzing trace with hash -742318452, now seen corresponding path program 170 times [2020-10-09 10:41:44,281 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:41:44,281 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126603680] [2020-10-09 10:41:44,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:41:44,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:41:44,404 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:41:44,404 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126603680] [2020-10-09 10:41:44,404 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1677851237] [2020-10-09 10:41:44,404 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 192 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 192 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:41:44,445 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-09 10:41:44,445 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:41:44,446 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:41:44,446 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:41:46,733 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 10:41:46,786 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:41:46,787 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:41:46,787 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:41:46,787 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532002586] [2020-10-09 10:41:46,787 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:41:46,787 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:41:46,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:41:46,787 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=189, Unknown=1, NotChecked=0, Total=272 [2020-10-09 10:41:46,787 INFO L87 Difference]: Start difference. First operand 274 states and 726 transitions. Second operand 17 states. [2020-10-09 10:41:48,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:41:48,480 INFO L93 Difference]: Finished difference Result 425 states and 1076 transitions. [2020-10-09 10:41:48,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-09 10:41:48,481 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-09 10:41:48,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:41:48,482 INFO L225 Difference]: With dead ends: 425 [2020-10-09 10:41:48,482 INFO L226 Difference]: Without dead ends: 415 [2020-10-09 10:41:48,482 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 365 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=425, Invalid=980, Unknown=1, NotChecked=0, Total=1406 [2020-10-09 10:41:48,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 415 states. [2020-10-09 10:41:48,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 415 to 268. [2020-10-09 10:41:48,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 268 states. [2020-10-09 10:41:48,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 712 transitions. [2020-10-09 10:41:48,487 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 712 transitions. Word has length 14 [2020-10-09 10:41:48,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:41:48,487 INFO L481 AbstractCegarLoop]: Abstraction has 268 states and 712 transitions. [2020-10-09 10:41:48,487 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:41:48,487 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 712 transitions. [2020-10-09 10:41:48,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:41:48,487 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:41:48,488 INFO L421 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:41:48,689 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable198,192 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:41:48,689 INFO L429 AbstractCegarLoop]: === Iteration 200 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:41:48,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:41:48,690 INFO L82 PathProgramCache]: Analyzing trace with hash -742110132, now seen corresponding path program 171 times [2020-10-09 10:41:48,690 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:41:48,690 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249703151] [2020-10-09 10:41:48,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:41:48,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:41:48,808 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:41:48,809 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249703151] [2020-10-09 10:41:48,809 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1103451493] [2020-10-09 10:41:48,809 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 193 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 193 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:41:48,848 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-09 10:41:48,848 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:41:48,849 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:41:48,849 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:41:49,141 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:41:49,141 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:41:49,141 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:41:49,142 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872925208] [2020-10-09 10:41:49,142 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:41:49,142 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:41:49,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:41:49,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:41:49,142 INFO L87 Difference]: Start difference. First operand 268 states and 712 transitions. Second operand 17 states. [2020-10-09 10:41:49,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:41:49,737 INFO L93 Difference]: Finished difference Result 368 states and 929 transitions. [2020-10-09 10:41:49,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-09 10:41:49,738 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-09 10:41:49,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:41:49,739 INFO L225 Difference]: With dead ends: 368 [2020-10-09 10:41:49,739 INFO L226 Difference]: Without dead ends: 364 [2020-10-09 10:41:49,739 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=202, Invalid=500, Unknown=0, NotChecked=0, Total=702 [2020-10-09 10:41:49,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2020-10-09 10:41:49,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 267. [2020-10-09 10:41:49,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 267 states. [2020-10-09 10:41:49,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 709 transitions. [2020-10-09 10:41:49,744 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 709 transitions. Word has length 14 [2020-10-09 10:41:49,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:41:49,744 INFO L481 AbstractCegarLoop]: Abstraction has 267 states and 709 transitions. [2020-10-09 10:41:49,744 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:41:49,744 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 709 transitions. [2020-10-09 10:41:49,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:41:49,745 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:41:49,745 INFO L421 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:41:49,945 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 193 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable199 [2020-10-09 10:41:49,945 INFO L429 AbstractCegarLoop]: === Iteration 201 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:41:49,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:41:49,946 INFO L82 PathProgramCache]: Analyzing trace with hash -741447042, now seen corresponding path program 172 times [2020-10-09 10:41:49,946 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:41:49,946 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735529625] [2020-10-09 10:41:49,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:41:49,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:41:50,069 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:41:50,069 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735529625] [2020-10-09 10:41:50,070 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [361395119] [2020-10-09 10:41:50,070 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 194 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 194 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:41:50,109 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-09 10:41:50,109 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:41:50,110 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:41:50,110 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:41:50,436 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:41:50,436 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:41:50,437 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:41:50,437 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139447870] [2020-10-09 10:41:50,437 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:41:50,437 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:41:50,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:41:50,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:41:50,437 INFO L87 Difference]: Start difference. First operand 267 states and 709 transitions. Second operand 17 states. [2020-10-09 10:41:51,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:41:51,407 INFO L93 Difference]: Finished difference Result 384 states and 970 transitions. [2020-10-09 10:41:51,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-09 10:41:51,408 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-09 10:41:51,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:41:51,409 INFO L225 Difference]: With dead ends: 384 [2020-10-09 10:41:51,409 INFO L226 Difference]: Without dead ends: 380 [2020-10-09 10:41:51,410 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=300, Invalid=692, Unknown=0, NotChecked=0, Total=992 [2020-10-09 10:41:51,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 380 states. [2020-10-09 10:41:51,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 380 to 268. [2020-10-09 10:41:51,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 268 states. [2020-10-09 10:41:51,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 711 transitions. [2020-10-09 10:41:51,414 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 711 transitions. Word has length 14 [2020-10-09 10:41:51,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:41:51,414 INFO L481 AbstractCegarLoop]: Abstraction has 268 states and 711 transitions. [2020-10-09 10:41:51,414 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:41:51,414 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 711 transitions. [2020-10-09 10:41:51,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:41:51,414 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:41:51,414 INFO L421 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:41:51,615 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 194 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable200 [2020-10-09 10:41:51,615 INFO L429 AbstractCegarLoop]: === Iteration 202 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:41:51,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:41:51,616 INFO L82 PathProgramCache]: Analyzing trace with hash -741424722, now seen corresponding path program 173 times [2020-10-09 10:41:51,616 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:41:51,616 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800741848] [2020-10-09 10:41:51,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:41:51,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:41:51,750 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:41:51,751 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800741848] [2020-10-09 10:41:51,751 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1721457051] [2020-10-09 10:41:51,751 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 195 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 195 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:41:51,790 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-09 10:41:51,790 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:41:51,791 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:41:51,791 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:41:52,063 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 10:41:52,094 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:41:52,095 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:41:52,095 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:41:52,095 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971794387] [2020-10-09 10:41:52,095 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:41:52,095 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:41:52,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:41:52,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=188, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:41:52,096 INFO L87 Difference]: Start difference. First operand 268 states and 711 transitions. Second operand 17 states. [2020-10-09 10:41:53,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:41:53,524 INFO L93 Difference]: Finished difference Result 416 states and 1051 transitions. [2020-10-09 10:41:53,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-09 10:41:53,526 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-09 10:41:53,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:41:53,526 INFO L225 Difference]: With dead ends: 416 [2020-10-09 10:41:53,526 INFO L226 Difference]: Without dead ends: 410 [2020-10-09 10:41:53,527 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 356 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=426, Invalid=980, Unknown=0, NotChecked=0, Total=1406 [2020-10-09 10:41:53,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2020-10-09 10:41:53,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 266. [2020-10-09 10:41:53,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 266 states. [2020-10-09 10:41:53,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 704 transitions. [2020-10-09 10:41:53,533 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 704 transitions. Word has length 14 [2020-10-09 10:41:53,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:41:53,533 INFO L481 AbstractCegarLoop]: Abstraction has 266 states and 704 transitions. [2020-10-09 10:41:53,533 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:41:53,533 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 704 transitions. [2020-10-09 10:41:53,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:41:53,534 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:41:53,534 INFO L421 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:41:53,737 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 195 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable201 [2020-10-09 10:41:53,738 INFO L429 AbstractCegarLoop]: === Iteration 203 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:41:53,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:41:53,738 INFO L82 PathProgramCache]: Analyzing trace with hash -541944403, now seen corresponding path program 174 times [2020-10-09 10:41:53,738 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:41:53,739 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695360710] [2020-10-09 10:41:53,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:41:53,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:41:53,861 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:41:53,861 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695360710] [2020-10-09 10:41:53,861 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1397901828] [2020-10-09 10:41:53,861 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 196 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 196 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:41:53,900 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-09 10:41:53,900 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:41:53,901 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:41:53,901 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:41:54,143 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:41:54,143 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:41:54,144 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:41:54,144 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964197378] [2020-10-09 10:41:54,144 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:41:54,144 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:41:54,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:41:54,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:41:54,145 INFO L87 Difference]: Start difference. First operand 266 states and 704 transitions. Second operand 17 states. [2020-10-09 10:41:54,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:41:54,674 INFO L93 Difference]: Finished difference Result 355 states and 889 transitions. [2020-10-09 10:41:54,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-09 10:41:54,675 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-09 10:41:54,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:41:54,676 INFO L225 Difference]: With dead ends: 355 [2020-10-09 10:41:54,676 INFO L226 Difference]: Without dead ends: 352 [2020-10-09 10:41:54,676 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=212, Invalid=544, Unknown=0, NotChecked=0, Total=756 [2020-10-09 10:41:54,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2020-10-09 10:41:54,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 270. [2020-10-09 10:41:54,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 270 states. [2020-10-09 10:41:54,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 718 transitions. [2020-10-09 10:41:54,681 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 718 transitions. Word has length 14 [2020-10-09 10:41:54,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:41:54,681 INFO L481 AbstractCegarLoop]: Abstraction has 270 states and 718 transitions. [2020-10-09 10:41:54,681 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:41:54,681 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 718 transitions. [2020-10-09 10:41:54,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:41:54,681 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:41:54,681 INFO L421 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:41:54,882 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 196 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable202 [2020-10-09 10:41:54,882 INFO L429 AbstractCegarLoop]: === Iteration 204 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:41:54,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:41:54,882 INFO L82 PathProgramCache]: Analyzing trace with hash -541943442, now seen corresponding path program 175 times [2020-10-09 10:41:54,883 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:41:54,883 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957103197] [2020-10-09 10:41:54,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:41:54,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:41:55,007 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:41:55,008 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957103197] [2020-10-09 10:41:55,008 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1450560068] [2020-10-09 10:41:55,008 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 197 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 197 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:41:55,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:41:55,047 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:41:55,047 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:41:55,291 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:41:55,292 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:41:55,292 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:41:55,292 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205085567] [2020-10-09 10:41:55,293 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:41:55,293 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:41:55,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:41:55,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:41:55,293 INFO L87 Difference]: Start difference. First operand 270 states and 718 transitions. Second operand 17 states. [2020-10-09 10:41:55,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:41:55,838 INFO L93 Difference]: Finished difference Result 390 states and 972 transitions. [2020-10-09 10:41:55,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-09 10:41:55,839 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-09 10:41:55,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:41:55,840 INFO L225 Difference]: With dead ends: 390 [2020-10-09 10:41:55,840 INFO L226 Difference]: Without dead ends: 385 [2020-10-09 10:41:55,841 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 170 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=209, Invalid=547, Unknown=0, NotChecked=0, Total=756 [2020-10-09 10:41:55,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2020-10-09 10:41:55,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 271. [2020-10-09 10:41:55,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 271 states. [2020-10-09 10:41:55,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 721 transitions. [2020-10-09 10:41:55,845 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 721 transitions. Word has length 14 [2020-10-09 10:41:55,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:41:55,845 INFO L481 AbstractCegarLoop]: Abstraction has 271 states and 721 transitions. [2020-10-09 10:41:55,845 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:41:55,845 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 721 transitions. [2020-10-09 10:41:55,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:41:55,846 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:41:55,846 INFO L421 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:41:56,046 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 197 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable203 [2020-10-09 10:41:56,047 INFO L429 AbstractCegarLoop]: === Iteration 205 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:41:56,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:41:56,047 INFO L82 PathProgramCache]: Analyzing trace with hash -541914612, now seen corresponding path program 176 times [2020-10-09 10:41:56,047 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:41:56,047 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95359827] [2020-10-09 10:41:56,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:41:56,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:41:56,175 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:41:56,175 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95359827] [2020-10-09 10:41:56,175 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [781274145] [2020-10-09 10:41:56,176 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 198 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 198 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:41:56,221 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-09 10:41:56,221 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:41:56,222 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:41:56,222 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:41:56,457 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:41:56,458 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:41:56,458 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:41:56,458 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082940161] [2020-10-09 10:41:56,458 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:41:56,458 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:41:56,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:41:56,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:41:56,459 INFO L87 Difference]: Start difference. First operand 271 states and 721 transitions. Second operand 17 states. [2020-10-09 10:41:56,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:41:56,933 INFO L93 Difference]: Finished difference Result 392 states and 981 transitions. [2020-10-09 10:41:56,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-09 10:41:56,934 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-09 10:41:56,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:41:56,935 INFO L225 Difference]: With dead ends: 392 [2020-10-09 10:41:56,935 INFO L226 Difference]: Without dead ends: 387 [2020-10-09 10:41:56,935 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=196, Invalid=506, Unknown=0, NotChecked=0, Total=702 [2020-10-09 10:41:56,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states. [2020-10-09 10:41:56,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 270. [2020-10-09 10:41:56,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 270 states. [2020-10-09 10:41:56,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 718 transitions. [2020-10-09 10:41:56,940 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 718 transitions. Word has length 14 [2020-10-09 10:41:56,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:41:56,940 INFO L481 AbstractCegarLoop]: Abstraction has 270 states and 718 transitions. [2020-10-09 10:41:56,940 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:41:56,940 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 718 transitions. [2020-10-09 10:41:56,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:41:56,940 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:41:56,941 INFO L421 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:41:57,141 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 198 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable204 [2020-10-09 10:41:57,141 INFO L429 AbstractCegarLoop]: === Iteration 206 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:41:57,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:41:57,142 INFO L82 PathProgramCache]: Analyzing trace with hash -540990130, now seen corresponding path program 177 times [2020-10-09 10:41:57,142 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:41:57,142 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328033929] [2020-10-09 10:41:57,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:41:57,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:41:57,281 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:41:57,281 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328033929] [2020-10-09 10:41:57,282 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1665220584] [2020-10-09 10:41:57,282 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 199 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 199 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:41:57,322 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-09 10:41:57,323 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:41:57,324 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:41:57,324 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:41:57,582 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:41:57,582 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:41:57,583 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:41:57,583 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136709086] [2020-10-09 10:41:57,583 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:41:57,583 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:41:57,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:41:57,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:41:57,584 INFO L87 Difference]: Start difference. First operand 270 states and 718 transitions. Second operand 17 states. [2020-10-09 10:41:58,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:41:58,016 INFO L93 Difference]: Finished difference Result 359 states and 898 transitions. [2020-10-09 10:41:58,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-09 10:41:58,017 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-09 10:41:58,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:41:58,018 INFO L225 Difference]: With dead ends: 359 [2020-10-09 10:41:58,018 INFO L226 Difference]: Without dead ends: 343 [2020-10-09 10:41:58,019 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=178, Invalid=472, Unknown=0, NotChecked=0, Total=650 [2020-10-09 10:41:58,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2020-10-09 10:41:58,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 268. [2020-10-09 10:41:58,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 268 states. [2020-10-09 10:41:58,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 710 transitions. [2020-10-09 10:41:58,023 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 710 transitions. Word has length 14 [2020-10-09 10:41:58,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:41:58,023 INFO L481 AbstractCegarLoop]: Abstraction has 268 states and 710 transitions. [2020-10-09 10:41:58,023 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:41:58,023 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 710 transitions. [2020-10-09 10:41:58,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:41:58,023 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:41:58,023 INFO L421 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:41:58,224 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable205,199 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:41:58,224 INFO L429 AbstractCegarLoop]: === Iteration 207 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:41:58,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:41:58,225 INFO L82 PathProgramCache]: Analyzing trace with hash 95285087, now seen corresponding path program 178 times [2020-10-09 10:41:58,225 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:41:58,225 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366706078] [2020-10-09 10:41:58,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:41:58,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:41:58,354 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:41:58,354 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366706078] [2020-10-09 10:41:58,355 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [762475602] [2020-10-09 10:41:58,355 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 200 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 200 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:41:58,394 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-09 10:41:58,394 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:41:58,395 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:41:58,395 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:41:58,629 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:41:58,629 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:41:58,629 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:41:58,629 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423180351] [2020-10-09 10:41:58,629 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:41:58,630 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:41:58,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:41:58,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:41:58,630 INFO L87 Difference]: Start difference. First operand 268 states and 710 transitions. Second operand 17 states. [2020-10-09 10:41:59,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:41:59,513 INFO L93 Difference]: Finished difference Result 369 states and 917 transitions. [2020-10-09 10:41:59,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-09 10:41:59,514 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-09 10:41:59,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:41:59,515 INFO L225 Difference]: With dead ends: 369 [2020-10-09 10:41:59,515 INFO L226 Difference]: Without dead ends: 366 [2020-10-09 10:41:59,515 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 321 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=353, Invalid=907, Unknown=0, NotChecked=0, Total=1260 [2020-10-09 10:41:59,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 366 states. [2020-10-09 10:41:59,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 366 to 271. [2020-10-09 10:41:59,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 271 states. [2020-10-09 10:41:59,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 721 transitions. [2020-10-09 10:41:59,521 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 721 transitions. Word has length 14 [2020-10-09 10:41:59,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:41:59,521 INFO L481 AbstractCegarLoop]: Abstraction has 271 states and 721 transitions. [2020-10-09 10:41:59,521 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:41:59,521 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 721 transitions. [2020-10-09 10:41:59,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:41:59,521 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:41:59,521 INFO L421 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:41:59,722 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 200 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable206 [2020-10-09 10:41:59,722 INFO L429 AbstractCegarLoop]: === Iteration 208 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:41:59,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:41:59,723 INFO L82 PathProgramCache]: Analyzing trace with hash 95286048, now seen corresponding path program 179 times [2020-10-09 10:41:59,723 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:41:59,723 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290336718] [2020-10-09 10:41:59,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:41:59,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:41:59,849 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:41:59,849 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290336718] [2020-10-09 10:41:59,849 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [260731976] [2020-10-09 10:41:59,850 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 201 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 201 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:41:59,889 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-09 10:41:59,889 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:41:59,890 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:41:59,890 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:42:00,137 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:42:00,137 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:42:00,138 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:42:00,138 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284572826] [2020-10-09 10:42:00,138 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:42:00,138 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:42:00,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:42:00,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:42:00,139 INFO L87 Difference]: Start difference. First operand 271 states and 721 transitions. Second operand 17 states. [2020-10-09 10:42:00,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:42:00,992 INFO L93 Difference]: Finished difference Result 425 states and 1047 transitions. [2020-10-09 10:42:00,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-09 10:42:00,993 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-09 10:42:00,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:42:00,994 INFO L225 Difference]: With dead ends: 425 [2020-10-09 10:42:00,994 INFO L226 Difference]: Without dead ends: 410 [2020-10-09 10:42:00,994 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 246 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=296, Invalid=760, Unknown=0, NotChecked=0, Total=1056 [2020-10-09 10:42:00,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2020-10-09 10:42:00,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 276. [2020-10-09 10:42:00,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 276 states. [2020-10-09 10:42:00,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 733 transitions. [2020-10-09 10:42:00,998 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 733 transitions. Word has length 14 [2020-10-09 10:42:00,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:42:00,999 INFO L481 AbstractCegarLoop]: Abstraction has 276 states and 733 transitions. [2020-10-09 10:42:00,999 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:42:00,999 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 733 transitions. [2020-10-09 10:42:00,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:42:00,999 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:42:00,999 INFO L421 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:42:01,200 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable207,201 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:42:01,200 INFO L429 AbstractCegarLoop]: === Iteration 209 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:42:01,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:42:01,201 INFO L82 PathProgramCache]: Analyzing trace with hash 95314878, now seen corresponding path program 180 times [2020-10-09 10:42:01,201 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:42:01,201 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503733425] [2020-10-09 10:42:01,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:42:01,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:42:01,333 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:42:01,333 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503733425] [2020-10-09 10:42:01,333 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2005557233] [2020-10-09 10:42:01,334 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 202 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 202 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:42:01,372 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-09 10:42:01,372 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:42:01,373 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:42:01,373 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:42:01,611 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:42:01,612 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:42:01,612 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:42:01,612 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845796967] [2020-10-09 10:42:01,612 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:42:01,613 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:42:01,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:42:01,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=210, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:42:01,613 INFO L87 Difference]: Start difference. First operand 276 states and 733 transitions. Second operand 17 states. [2020-10-09 10:42:02,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:42:02,347 INFO L93 Difference]: Finished difference Result 404 states and 1006 transitions. [2020-10-09 10:42:02,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-09 10:42:02,349 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-09 10:42:02,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:42:02,350 INFO L225 Difference]: With dead ends: 404 [2020-10-09 10:42:02,350 INFO L226 Difference]: Without dead ends: 399 [2020-10-09 10:42:02,350 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 249 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=274, Invalid=718, Unknown=0, NotChecked=0, Total=992 [2020-10-09 10:42:02,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 399 states. [2020-10-09 10:42:02,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 399 to 274. [2020-10-09 10:42:02,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 274 states. [2020-10-09 10:42:02,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 728 transitions. [2020-10-09 10:42:02,354 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 728 transitions. Word has length 14 [2020-10-09 10:42:02,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:42:02,354 INFO L481 AbstractCegarLoop]: Abstraction has 274 states and 728 transitions. [2020-10-09 10:42:02,354 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:42:02,354 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 728 transitions. [2020-10-09 10:42:02,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:42:02,355 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:42:02,355 INFO L421 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:42:02,555 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable208,202 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:42:02,555 INFO L429 AbstractCegarLoop]: === Iteration 210 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:42:02,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:42:02,556 INFO L82 PathProgramCache]: Analyzing trace with hash 115840877, now seen corresponding path program 181 times [2020-10-09 10:42:02,556 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:42:02,556 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788977640] [2020-10-09 10:42:02,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:42:02,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:42:02,685 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:42:02,686 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788977640] [2020-10-09 10:42:02,686 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2024153778] [2020-10-09 10:42:02,686 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 203 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 203 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:42:02,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:42:02,726 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:42:02,727 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:42:02,962 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:42:02,962 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:42:02,962 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:42:02,962 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016947934] [2020-10-09 10:42:02,963 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:42:02,963 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:42:02,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:42:02,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:42:02,963 INFO L87 Difference]: Start difference. First operand 274 states and 728 transitions. Second operand 17 states. [2020-10-09 10:42:03,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:42:03,928 INFO L93 Difference]: Finished difference Result 369 states and 920 transitions. [2020-10-09 10:42:03,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-09 10:42:03,929 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-09 10:42:03,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:42:03,930 INFO L225 Difference]: With dead ends: 369 [2020-10-09 10:42:03,930 INFO L226 Difference]: Without dead ends: 366 [2020-10-09 10:42:03,931 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 317 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=395, Invalid=937, Unknown=0, NotChecked=0, Total=1332 [2020-10-09 10:42:03,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 366 states. [2020-10-09 10:42:03,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 366 to 276. [2020-10-09 10:42:03,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 276 states. [2020-10-09 10:42:03,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 736 transitions. [2020-10-09 10:42:03,934 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 736 transitions. Word has length 14 [2020-10-09 10:42:03,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:42:03,935 INFO L481 AbstractCegarLoop]: Abstraction has 276 states and 736 transitions. [2020-10-09 10:42:03,935 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:42:03,935 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 736 transitions. [2020-10-09 10:42:03,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:42:03,935 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:42:03,935 INFO L421 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:42:04,136 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable209,203 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:42:04,136 INFO L429 AbstractCegarLoop]: === Iteration 211 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:42:04,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:42:04,136 INFO L82 PathProgramCache]: Analyzing trace with hash 115841838, now seen corresponding path program 182 times [2020-10-09 10:42:04,137 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:42:04,137 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602094078] [2020-10-09 10:42:04,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:42:04,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:42:04,265 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:42:04,265 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602094078] [2020-10-09 10:42:04,265 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [458171594] [2020-10-09 10:42:04,265 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 204 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 204 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:42:04,303 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-09 10:42:04,303 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:42:04,304 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:42:04,304 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:42:04,552 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:42:04,552 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:42:04,553 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:42:04,553 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881999993] [2020-10-09 10:42:04,553 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:42:04,553 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:42:04,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:42:04,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:42:04,554 INFO L87 Difference]: Start difference. First operand 276 states and 736 transitions. Second operand 17 states. [2020-10-09 10:42:05,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:42:05,559 INFO L93 Difference]: Finished difference Result 401 states and 999 transitions. [2020-10-09 10:42:05,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-09 10:42:05,560 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-09 10:42:05,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:42:05,561 INFO L225 Difference]: With dead ends: 401 [2020-10-09 10:42:05,561 INFO L226 Difference]: Without dead ends: 396 [2020-10-09 10:42:05,561 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 315 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=361, Invalid=899, Unknown=0, NotChecked=0, Total=1260 [2020-10-09 10:42:05,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396 states. [2020-10-09 10:42:05,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396 to 278. [2020-10-09 10:42:05,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 278 states. [2020-10-09 10:42:05,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 742 transitions. [2020-10-09 10:42:05,566 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 742 transitions. Word has length 14 [2020-10-09 10:42:05,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:42:05,566 INFO L481 AbstractCegarLoop]: Abstraction has 278 states and 742 transitions. [2020-10-09 10:42:05,566 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:42:05,566 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 742 transitions. [2020-10-09 10:42:05,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:42:05,567 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:42:05,567 INFO L421 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:42:05,767 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 204 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable210 [2020-10-09 10:42:05,767 INFO L429 AbstractCegarLoop]: === Iteration 212 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:42:05,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:42:05,768 INFO L82 PathProgramCache]: Analyzing trace with hash 116503967, now seen corresponding path program 183 times [2020-10-09 10:42:05,768 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:42:05,768 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177951287] [2020-10-09 10:42:05,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:42:05,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:42:05,907 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:42:05,907 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177951287] [2020-10-09 10:42:05,907 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [140649885] [2020-10-09 10:42:05,907 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 205 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 205 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:42:05,946 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-09 10:42:05,946 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:42:05,947 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 16 conjunts are in the unsatisfiable core [2020-10-09 10:42:05,948 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:42:06,103 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:42:06,103 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:42:06,103 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2020-10-09 10:42:06,103 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103447472] [2020-10-09 10:42:06,104 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-09 10:42:06,104 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:42:06,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-09 10:42:06,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=177, Unknown=0, NotChecked=0, Total=240 [2020-10-09 10:42:06,104 INFO L87 Difference]: Start difference. First operand 278 states and 742 transitions. Second operand 16 states. [2020-10-09 10:42:06,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:42:06,984 INFO L93 Difference]: Finished difference Result 360 states and 898 transitions. [2020-10-09 10:42:06,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-09 10:42:06,985 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 14 [2020-10-09 10:42:06,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:42:06,986 INFO L225 Difference]: With dead ends: 360 [2020-10-09 10:42:06,986 INFO L226 Difference]: Without dead ends: 357 [2020-10-09 10:42:06,986 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=282, Invalid=710, Unknown=0, NotChecked=0, Total=992 [2020-10-09 10:42:06,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357 states. [2020-10-09 10:42:06,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357 to 280. [2020-10-09 10:42:06,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 280 states. [2020-10-09 10:42:06,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 749 transitions. [2020-10-09 10:42:06,996 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 749 transitions. Word has length 14 [2020-10-09 10:42:06,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:42:06,996 INFO L481 AbstractCegarLoop]: Abstraction has 280 states and 749 transitions. [2020-10-09 10:42:06,996 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-09 10:42:06,996 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 749 transitions. [2020-10-09 10:42:06,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:42:06,996 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:42:06,997 INFO L421 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:42:07,197 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable211,205 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:42:07,197 INFO L429 AbstractCegarLoop]: === Iteration 213 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:42:07,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:42:07,198 INFO L82 PathProgramCache]: Analyzing trace with hash 116525326, now seen corresponding path program 184 times [2020-10-09 10:42:07,198 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:42:07,198 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455338367] [2020-10-09 10:42:07,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:42:07,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:42:07,324 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:42:07,324 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455338367] [2020-10-09 10:42:07,324 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [882518939] [2020-10-09 10:42:07,325 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 206 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 206 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:42:07,364 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-09 10:42:07,364 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:42:07,364 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:42:07,365 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:42:07,575 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 10:42:07,592 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:42:07,592 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:42:07,592 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:42:07,592 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247084676] [2020-10-09 10:42:07,593 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:42:07,593 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:42:07,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:42:07,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:42:07,593 INFO L87 Difference]: Start difference. First operand 280 states and 749 transitions. Second operand 17 states. [2020-10-09 10:42:08,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:42:08,473 INFO L93 Difference]: Finished difference Result 316 states and 812 transitions. [2020-10-09 10:42:08,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-09 10:42:08,474 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-09 10:42:08,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:42:08,475 INFO L225 Difference]: With dead ends: 316 [2020-10-09 10:42:08,475 INFO L226 Difference]: Without dead ends: 308 [2020-10-09 10:42:08,475 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 320 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=436, Invalid=896, Unknown=0, NotChecked=0, Total=1332 [2020-10-09 10:42:08,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2020-10-09 10:42:08,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 280. [2020-10-09 10:42:08,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 280 states. [2020-10-09 10:42:08,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 745 transitions. [2020-10-09 10:42:08,480 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 745 transitions. Word has length 14 [2020-10-09 10:42:08,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:42:08,480 INFO L481 AbstractCegarLoop]: Abstraction has 280 states and 745 transitions. [2020-10-09 10:42:08,480 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:42:08,480 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 745 transitions. [2020-10-09 10:42:08,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:42:08,480 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:42:08,481 INFO L421 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:42:08,681 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 206 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable212 [2020-10-09 10:42:08,681 INFO L429 AbstractCegarLoop]: === Iteration 214 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:42:08,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:42:08,682 INFO L82 PathProgramCache]: Analyzing trace with hash 116526287, now seen corresponding path program 185 times [2020-10-09 10:42:08,682 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:42:08,682 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674707310] [2020-10-09 10:42:08,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:42:08,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:42:08,820 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:42:08,820 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674707310] [2020-10-09 10:42:08,821 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [525701136] [2020-10-09 10:42:08,821 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 207 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 207 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:42:08,861 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-09 10:42:08,862 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:42:08,862 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:42:08,863 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:42:09,066 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-09 10:42:09,132 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:42:09,132 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:42:09,132 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:42:09,132 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713850534] [2020-10-09 10:42:09,133 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:42:09,133 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:42:09,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:42:09,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:42:09,134 INFO L87 Difference]: Start difference. First operand 280 states and 745 transitions. Second operand 17 states. [2020-10-09 10:42:10,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:42:10,395 INFO L93 Difference]: Finished difference Result 392 states and 995 transitions. [2020-10-09 10:42:10,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-09 10:42:10,397 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-09 10:42:10,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:42:10,397 INFO L225 Difference]: With dead ends: 392 [2020-10-09 10:42:10,397 INFO L226 Difference]: Without dead ends: 387 [2020-10-09 10:42:10,398 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 424 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=487, Invalid=1153, Unknown=0, NotChecked=0, Total=1640 [2020-10-09 10:42:10,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states. [2020-10-09 10:42:10,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 278. [2020-10-09 10:42:10,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 278 states. [2020-10-09 10:42:10,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 739 transitions. [2020-10-09 10:42:10,402 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 739 transitions. Word has length 14 [2020-10-09 10:42:10,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:42:10,402 INFO L481 AbstractCegarLoop]: Abstraction has 278 states and 739 transitions. [2020-10-09 10:42:10,402 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:42:10,403 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 739 transitions. [2020-10-09 10:42:10,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:42:10,403 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:42:10,403 INFO L421 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:42:10,603 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 207 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable213 [2020-10-09 10:42:10,604 INFO L429 AbstractCegarLoop]: === Iteration 215 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:42:10,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:42:10,604 INFO L82 PathProgramCache]: Analyzing trace with hash 116533758, now seen corresponding path program 186 times [2020-10-09 10:42:10,605 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:42:10,605 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049898900] [2020-10-09 10:42:10,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:42:10,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:42:10,738 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:42:10,738 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049898900] [2020-10-09 10:42:10,738 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [394865857] [2020-10-09 10:42:10,739 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 208 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 208 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:42:10,782 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-10-09 10:42:10,783 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:42:10,783 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:42:10,784 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:42:11,029 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:42:11,030 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:42:11,030 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:42:11,030 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728819917] [2020-10-09 10:42:11,031 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:42:11,031 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:42:11,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:42:11,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:42:11,032 INFO L87 Difference]: Start difference. First operand 278 states and 739 transitions. Second operand 17 states. [2020-10-09 10:42:12,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:42:12,174 INFO L93 Difference]: Finished difference Result 409 states and 1032 transitions. [2020-10-09 10:42:12,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-09 10:42:12,175 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-09 10:42:12,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:42:12,176 INFO L225 Difference]: With dead ends: 409 [2020-10-09 10:42:12,177 INFO L226 Difference]: Without dead ends: 404 [2020-10-09 10:42:12,177 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 392 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=423, Invalid=1059, Unknown=0, NotChecked=0, Total=1482 [2020-10-09 10:42:12,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 404 states. [2020-10-09 10:42:12,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 404 to 282. [2020-10-09 10:42:12,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 282 states. [2020-10-09 10:42:12,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 753 transitions. [2020-10-09 10:42:12,181 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 753 transitions. Word has length 14 [2020-10-09 10:42:12,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:42:12,181 INFO L481 AbstractCegarLoop]: Abstraction has 282 states and 753 transitions. [2020-10-09 10:42:12,181 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:42:12,181 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 753 transitions. [2020-10-09 10:42:12,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:42:12,182 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:42:12,182 INFO L421 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:42:12,382 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable214,208 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:42:12,382 INFO L429 AbstractCegarLoop]: === Iteration 216 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:42:12,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:42:12,383 INFO L82 PathProgramCache]: Analyzing trace with hash 116555117, now seen corresponding path program 187 times [2020-10-09 10:42:12,383 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:42:12,383 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823276094] [2020-10-09 10:42:12,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:42:12,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:42:12,528 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:42:12,528 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823276094] [2020-10-09 10:42:12,528 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [308680521] [2020-10-09 10:42:12,528 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 209 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 209 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:42:12,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:42:12,567 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:42:12,567 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:42:12,787 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 10:42:12,839 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:42:12,840 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:42:12,840 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:42:12,840 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761182039] [2020-10-09 10:42:12,840 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:42:12,840 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:42:12,841 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:42:12,841 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=189, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:42:12,841 INFO L87 Difference]: Start difference. First operand 282 states and 753 transitions. Second operand 17 states. [2020-10-09 10:42:14,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:42:14,185 INFO L93 Difference]: Finished difference Result 409 states and 1039 transitions. [2020-10-09 10:42:14,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-09 10:42:14,186 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-09 10:42:14,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:42:14,187 INFO L225 Difference]: With dead ends: 409 [2020-10-09 10:42:14,187 INFO L226 Difference]: Without dead ends: 404 [2020-10-09 10:42:14,187 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 396 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=481, Invalid=1079, Unknown=0, NotChecked=0, Total=1560 [2020-10-09 10:42:14,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 404 states. [2020-10-09 10:42:14,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 404 to 282. [2020-10-09 10:42:14,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 282 states. [2020-10-09 10:42:14,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 753 transitions. [2020-10-09 10:42:14,192 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 753 transitions. Word has length 14 [2020-10-09 10:42:14,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:42:14,192 INFO L481 AbstractCegarLoop]: Abstraction has 282 states and 753 transitions. [2020-10-09 10:42:14,192 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:42:14,192 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 753 transitions. [2020-10-09 10:42:14,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:42:14,192 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:42:14,192 INFO L421 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:42:14,393 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 209 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable215 [2020-10-09 10:42:14,393 INFO L429 AbstractCegarLoop]: === Iteration 217 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:42:14,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:42:14,394 INFO L82 PathProgramCache]: Analyzing trace with hash 116556078, now seen corresponding path program 188 times [2020-10-09 10:42:14,394 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:42:14,394 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610088484] [2020-10-09 10:42:14,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:42:14,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:42:14,550 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:42:14,550 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610088484] [2020-10-09 10:42:14,550 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [429015311] [2020-10-09 10:42:14,551 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 210 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 210 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:42:14,624 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-09 10:42:14,625 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:42:14,626 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:42:14,627 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:42:14,919 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-09 10:42:14,956 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:42:14,957 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:42:14,957 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:42:14,957 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391198269] [2020-10-09 10:42:14,957 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:42:14,957 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:42:14,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:42:14,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:42:14,958 INFO L87 Difference]: Start difference. First operand 282 states and 753 transitions. Second operand 17 states. [2020-10-09 10:42:16,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:42:16,567 INFO L93 Difference]: Finished difference Result 436 states and 1104 transitions. [2020-10-09 10:42:16,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-09 10:42:16,568 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-09 10:42:16,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:42:16,569 INFO L225 Difference]: With dead ends: 436 [2020-10-09 10:42:16,569 INFO L226 Difference]: Without dead ends: 426 [2020-10-09 10:42:16,569 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 530 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=543, Invalid=1349, Unknown=0, NotChecked=0, Total=1892 [2020-10-09 10:42:16,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 426 states. [2020-10-09 10:42:16,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 426 to 275. [2020-10-09 10:42:16,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 275 states. [2020-10-09 10:42:16,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 734 transitions. [2020-10-09 10:42:16,574 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 734 transitions. Word has length 14 [2020-10-09 10:42:16,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:42:16,575 INFO L481 AbstractCegarLoop]: Abstraction has 275 states and 734 transitions. [2020-10-09 10:42:16,575 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:42:16,575 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 734 transitions. [2020-10-09 10:42:16,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:42:16,575 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:42:16,575 INFO L421 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:42:16,776 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 210 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable216 [2020-10-09 10:42:16,776 INFO L429 AbstractCegarLoop]: === Iteration 218 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:42:16,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:42:16,777 INFO L82 PathProgramCache]: Analyzing trace with hash 116764398, now seen corresponding path program 189 times [2020-10-09 10:42:16,777 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:42:16,777 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174617466] [2020-10-09 10:42:16,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:42:16,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:42:16,910 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:42:16,910 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174617466] [2020-10-09 10:42:16,911 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1549205332] [2020-10-09 10:42:16,911 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 211 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 211 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:42:16,950 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-09 10:42:16,950 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:42:16,951 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:42:16,951 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:42:17,211 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:42:17,212 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:42:17,212 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:42:17,212 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121624638] [2020-10-09 10:42:17,212 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:42:17,213 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:42:17,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:42:17,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:42:17,213 INFO L87 Difference]: Start difference. First operand 275 states and 734 transitions. Second operand 17 states. [2020-10-09 10:42:18,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:42:18,141 INFO L93 Difference]: Finished difference Result 421 states and 1054 transitions. [2020-10-09 10:42:18,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-09 10:42:18,142 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-09 10:42:18,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:42:18,143 INFO L225 Difference]: With dead ends: 421 [2020-10-09 10:42:18,143 INFO L226 Difference]: Without dead ends: 407 [2020-10-09 10:42:18,143 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 278 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=314, Invalid=808, Unknown=0, NotChecked=0, Total=1122 [2020-10-09 10:42:18,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407 states. [2020-10-09 10:42:18,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407 to 277. [2020-10-09 10:42:18,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 277 states. [2020-10-09 10:42:18,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 743 transitions. [2020-10-09 10:42:18,147 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 743 transitions. Word has length 14 [2020-10-09 10:42:18,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:42:18,148 INFO L481 AbstractCegarLoop]: Abstraction has 277 states and 743 transitions. [2020-10-09 10:42:18,148 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:42:18,148 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 743 transitions. [2020-10-09 10:42:18,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:42:18,148 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:42:18,148 INFO L421 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:42:18,349 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable217,211 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:42:18,349 INFO L429 AbstractCegarLoop]: === Iteration 219 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:42:18,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:42:18,350 INFO L82 PathProgramCache]: Analyzing trace with hash 117427488, now seen corresponding path program 190 times [2020-10-09 10:42:18,350 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:42:18,350 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786362360] [2020-10-09 10:42:18,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:42:18,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:42:18,480 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:42:18,481 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786362360] [2020-10-09 10:42:18,484 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1250129126] [2020-10-09 10:42:18,485 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 212 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 212 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:42:18,525 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-09 10:42:18,525 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:42:18,525 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:42:18,526 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:42:18,743 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:42:18,744 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:42:18,744 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:42:18,744 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782077414] [2020-10-09 10:42:18,744 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:42:18,744 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:42:18,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:42:18,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:42:18,745 INFO L87 Difference]: Start difference. First operand 277 states and 743 transitions. Second operand 17 states. [2020-10-09 10:42:19,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:42:19,783 INFO L93 Difference]: Finished difference Result 410 states and 1043 transitions. [2020-10-09 10:42:19,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-09 10:42:19,784 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-09 10:42:19,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:42:19,785 INFO L225 Difference]: With dead ends: 410 [2020-10-09 10:42:19,785 INFO L226 Difference]: Without dead ends: 405 [2020-10-09 10:42:19,785 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=396, Invalid=936, Unknown=0, NotChecked=0, Total=1332 [2020-10-09 10:42:19,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 405 states. [2020-10-09 10:42:19,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 405 to 281. [2020-10-09 10:42:19,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 281 states. [2020-10-09 10:42:19,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 757 transitions. [2020-10-09 10:42:19,790 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 757 transitions. Word has length 14 [2020-10-09 10:42:19,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:42:19,790 INFO L481 AbstractCegarLoop]: Abstraction has 281 states and 757 transitions. [2020-10-09 10:42:19,790 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:42:19,791 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 757 transitions. [2020-10-09 10:42:19,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:42:19,791 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:42:19,791 INFO L421 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:42:19,991 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable218,212 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:42:19,992 INFO L429 AbstractCegarLoop]: === Iteration 220 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:42:19,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:42:19,992 INFO L82 PathProgramCache]: Analyzing trace with hash 117448847, now seen corresponding path program 191 times [2020-10-09 10:42:19,992 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:42:19,993 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484822522] [2020-10-09 10:42:19,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:42:19,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:42:20,136 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:42:20,136 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484822522] [2020-10-09 10:42:20,137 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1866949514] [2020-10-09 10:42:20,137 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 213 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 213 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:42:20,176 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-09 10:42:20,177 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:42:20,177 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:42:20,178 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:42:20,382 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 10:42:20,399 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:42:20,400 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:42:20,400 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:42:20,400 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779238048] [2020-10-09 10:42:20,400 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:42:20,400 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:42:20,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:42:20,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:42:20,401 INFO L87 Difference]: Start difference. First operand 281 states and 757 transitions. Second operand 17 states. [2020-10-09 10:42:21,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:42:21,701 INFO L93 Difference]: Finished difference Result 431 states and 1100 transitions. [2020-10-09 10:42:21,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-09 10:42:21,702 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-09 10:42:21,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:42:21,703 INFO L225 Difference]: With dead ends: 431 [2020-10-09 10:42:21,703 INFO L226 Difference]: Without dead ends: 421 [2020-10-09 10:42:21,703 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 538 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=559, Invalid=1333, Unknown=0, NotChecked=0, Total=1892 [2020-10-09 10:42:21,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states. [2020-10-09 10:42:21,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 282. [2020-10-09 10:42:21,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 282 states. [2020-10-09 10:42:21,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 762 transitions. [2020-10-09 10:42:21,708 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 762 transitions. Word has length 14 [2020-10-09 10:42:21,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:42:21,708 INFO L481 AbstractCegarLoop]: Abstraction has 282 states and 762 transitions. [2020-10-09 10:42:21,708 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:42:21,708 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 762 transitions. [2020-10-09 10:42:21,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:42:21,708 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:42:21,709 INFO L421 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:42:21,909 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable219,213 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:42:21,909 INFO L429 AbstractCegarLoop]: === Iteration 221 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:42:21,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:42:21,910 INFO L82 PathProgramCache]: Analyzing trace with hash 117449808, now seen corresponding path program 192 times [2020-10-09 10:42:21,910 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:42:21,910 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72060849] [2020-10-09 10:42:21,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:42:21,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:42:22,049 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:42:22,049 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72060849] [2020-10-09 10:42:22,050 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1324689127] [2020-10-09 10:42:22,050 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 214 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 214 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:42:22,089 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-09 10:42:22,089 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:42:22,090 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:42:22,090 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:42:22,288 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-09 10:42:22,304 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:42:22,305 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:42:22,305 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:42:22,305 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748903115] [2020-10-09 10:42:22,306 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:42:22,306 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:42:22,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:42:22,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=189, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:42:22,306 INFO L87 Difference]: Start difference. First operand 282 states and 762 transitions. Second operand 17 states. [2020-10-09 10:42:23,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:42:23,535 INFO L93 Difference]: Finished difference Result 457 states and 1163 transitions. [2020-10-09 10:42:23,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-09 10:42:23,537 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-09 10:42:23,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:42:23,537 INFO L225 Difference]: With dead ends: 457 [2020-10-09 10:42:23,537 INFO L226 Difference]: Without dead ends: 447 [2020-10-09 10:42:23,538 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 429 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=483, Invalid=1157, Unknown=0, NotChecked=0, Total=1640 [2020-10-09 10:42:23,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 447 states. [2020-10-09 10:42:23,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 447 to 278. [2020-10-09 10:42:23,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 278 states. [2020-10-09 10:42:23,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 748 transitions. [2020-10-09 10:42:23,543 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 748 transitions. Word has length 14 [2020-10-09 10:42:23,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:42:23,543 INFO L481 AbstractCegarLoop]: Abstraction has 278 states and 748 transitions. [2020-10-09 10:42:23,543 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:42:23,543 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 748 transitions. [2020-10-09 10:42:23,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:42:23,543 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:42:23,543 INFO L421 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:42:23,744 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable220,214 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:42:23,744 INFO L429 AbstractCegarLoop]: === Iteration 222 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:42:23,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:42:23,745 INFO L82 PathProgramCache]: Analyzing trace with hash 117478638, now seen corresponding path program 193 times [2020-10-09 10:42:23,745 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:42:23,745 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425414062] [2020-10-09 10:42:23,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:42:23,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:42:23,888 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:42:23,888 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425414062] [2020-10-09 10:42:23,888 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [668335582] [2020-10-09 10:42:23,889 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 215 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 215 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:42:23,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:42:23,927 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:42:23,927 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:42:24,129 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 10:42:24,148 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:42:24,148 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:42:24,149 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:42:24,149 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371796717] [2020-10-09 10:42:24,149 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:42:24,149 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:42:24,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:42:24,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:42:24,150 INFO L87 Difference]: Start difference. First operand 278 states and 748 transitions. Second operand 17 states. [2020-10-09 10:42:25,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:42:25,505 INFO L93 Difference]: Finished difference Result 441 states and 1123 transitions. [2020-10-09 10:42:25,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-09 10:42:25,507 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-09 10:42:25,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:42:25,508 INFO L225 Difference]: With dead ends: 441 [2020-10-09 10:42:25,508 INFO L226 Difference]: Without dead ends: 431 [2020-10-09 10:42:25,509 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 444 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=480, Invalid=1160, Unknown=0, NotChecked=0, Total=1640 [2020-10-09 10:42:25,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states. [2020-10-09 10:42:25,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 277. [2020-10-09 10:42:25,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 277 states. [2020-10-09 10:42:25,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 744 transitions. [2020-10-09 10:42:25,513 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 744 transitions. Word has length 14 [2020-10-09 10:42:25,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:42:25,513 INFO L481 AbstractCegarLoop]: Abstraction has 277 states and 744 transitions. [2020-10-09 10:42:25,514 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:42:25,514 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 744 transitions. [2020-10-09 10:42:25,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:42:25,514 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:42:25,514 INFO L421 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:42:25,714 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable221,215 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:42:25,715 INFO L429 AbstractCegarLoop]: === Iteration 223 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:42:25,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:42:25,715 INFO L82 PathProgramCache]: Analyzing trace with hash 144470028, now seen corresponding path program 194 times [2020-10-09 10:42:25,715 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:42:25,716 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499144089] [2020-10-09 10:42:25,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:42:25,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:42:25,847 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:42:25,848 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499144089] [2020-10-09 10:42:25,848 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1086936946] [2020-10-09 10:42:25,848 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 216 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 216 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:42:25,886 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-09 10:42:25,886 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:42:25,887 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:42:25,888 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:42:26,159 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:42:26,159 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:42:26,160 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:42:26,160 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970001264] [2020-10-09 10:42:26,160 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:42:26,160 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:42:26,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:42:26,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=207, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:42:26,161 INFO L87 Difference]: Start difference. First operand 277 states and 744 transitions. Second operand 17 states. [2020-10-09 10:42:27,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:42:27,281 INFO L93 Difference]: Finished difference Result 401 states and 1008 transitions. [2020-10-09 10:42:27,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-09 10:42:27,283 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-09 10:42:27,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:42:27,284 INFO L225 Difference]: With dead ends: 401 [2020-10-09 10:42:27,284 INFO L226 Difference]: Without dead ends: 397 [2020-10-09 10:42:27,284 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 321 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=361, Invalid=899, Unknown=0, NotChecked=0, Total=1260 [2020-10-09 10:42:27,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 397 states. [2020-10-09 10:42:27,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 397 to 276. [2020-10-09 10:42:27,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 276 states. [2020-10-09 10:42:27,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 741 transitions. [2020-10-09 10:42:27,290 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 741 transitions. Word has length 14 [2020-10-09 10:42:27,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:42:27,290 INFO L481 AbstractCegarLoop]: Abstraction has 276 states and 741 transitions. [2020-10-09 10:42:27,290 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:42:27,290 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 741 transitions. [2020-10-09 10:42:27,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:42:27,291 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:42:27,291 INFO L421 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:42:27,503 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 216 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable222 [2020-10-09 10:42:27,503 INFO L429 AbstractCegarLoop]: === Iteration 224 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:42:27,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:42:27,504 INFO L82 PathProgramCache]: Analyzing trace with hash 145133118, now seen corresponding path program 195 times [2020-10-09 10:42:27,504 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:42:27,504 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696582395] [2020-10-09 10:42:27,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:42:27,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:42:27,650 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:42:27,651 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696582395] [2020-10-09 10:42:27,651 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [890384233] [2020-10-09 10:42:27,651 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 217 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 217 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:42:27,690 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-09 10:42:27,691 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:42:27,691 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-09 10:42:27,692 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:42:27,964 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:42:27,964 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:42:27,964 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:42:27,965 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248113681] [2020-10-09 10:42:27,965 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:42:27,965 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:42:27,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:42:27,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:42:27,965 INFO L87 Difference]: Start difference. First operand 276 states and 741 transitions. Second operand 17 states. [2020-10-09 10:42:29,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:42:29,343 INFO L93 Difference]: Finished difference Result 402 states and 1016 transitions. [2020-10-09 10:42:29,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-09 10:42:29,345 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-09 10:42:29,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:42:29,345 INFO L225 Difference]: With dead ends: 402 [2020-10-09 10:42:29,345 INFO L226 Difference]: Without dead ends: 398 [2020-10-09 10:42:29,346 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 423 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=448, Invalid=1112, Unknown=0, NotChecked=0, Total=1560 [2020-10-09 10:42:29,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 398 states. [2020-10-09 10:42:29,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 398 to 277. [2020-10-09 10:42:29,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 277 states. [2020-10-09 10:42:29,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 743 transitions. [2020-10-09 10:42:29,350 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 743 transitions. Word has length 14 [2020-10-09 10:42:29,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:42:29,350 INFO L481 AbstractCegarLoop]: Abstraction has 277 states and 743 transitions. [2020-10-09 10:42:29,350 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:42:29,351 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 743 transitions. [2020-10-09 10:42:29,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:42:29,351 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:42:29,351 INFO L421 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:42:29,551 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 217 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable223 [2020-10-09 10:42:29,552 INFO L429 AbstractCegarLoop]: === Iteration 225 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:42:29,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:42:29,552 INFO L82 PathProgramCache]: Analyzing trace with hash 145155438, now seen corresponding path program 196 times [2020-10-09 10:42:29,552 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:42:29,553 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331422608] [2020-10-09 10:42:29,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:42:29,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:42:29,698 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:42:29,698 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331422608] [2020-10-09 10:42:29,698 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1183860985] [2020-10-09 10:42:29,698 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 218 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 218 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:42:29,739 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-09 10:42:29,739 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:42:29,739 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:42:29,740 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:42:29,972 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 10:42:30,005 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:42:30,005 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:42:30,005 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:42:30,005 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402369357] [2020-10-09 10:42:30,005 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:42:30,006 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:42:30,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:42:30,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:42:30,006 INFO L87 Difference]: Start difference. First operand 277 states and 743 transitions. Second operand 17 states. [2020-10-09 10:42:31,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:42:31,947 INFO L93 Difference]: Finished difference Result 433 states and 1104 transitions. [2020-10-09 10:42:31,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-09 10:42:31,949 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-09 10:42:31,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:42:31,950 INFO L225 Difference]: With dead ends: 433 [2020-10-09 10:42:31,950 INFO L226 Difference]: Without dead ends: 427 [2020-10-09 10:42:31,950 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 562 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=587, Invalid=1393, Unknown=0, NotChecked=0, Total=1980 [2020-10-09 10:42:31,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427 states. [2020-10-09 10:42:31,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 427 to 275. [2020-10-09 10:42:31,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 275 states. [2020-10-09 10:42:31,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 736 transitions. [2020-10-09 10:42:31,955 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 736 transitions. Word has length 14 [2020-10-09 10:42:31,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:42:31,955 INFO L481 AbstractCegarLoop]: Abstraction has 275 states and 736 transitions. [2020-10-09 10:42:31,955 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:42:31,956 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 736 transitions. [2020-10-09 10:42:31,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:42:31,956 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:42:31,956 INFO L421 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:42:32,156 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 218 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable224 [2020-10-09 10:42:32,157 INFO L429 AbstractCegarLoop]: === Iteration 226 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:42:32,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:42:32,157 INFO L82 PathProgramCache]: Analyzing trace with hash 145184268, now seen corresponding path program 197 times [2020-10-09 10:42:32,157 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:42:32,158 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466617089] [2020-10-09 10:42:32,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:42:32,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:42:32,305 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:42:32,306 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466617089] [2020-10-09 10:42:32,306 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2028393332] [2020-10-09 10:42:32,306 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 219 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 219 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:42:32,346 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-09 10:42:32,346 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:42:32,347 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:42:32,348 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:42:36,725 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 10:42:42,720 WARN L193 SmtUtils]: Spent 4.08 s on a formula simplification. DAG size of input: 42 DAG size of output: 19 [2020-10-09 10:42:42,722 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:42:42,722 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:42:42,722 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 16 [2020-10-09 10:42:42,723 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761840480] [2020-10-09 10:42:42,723 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-09 10:42:42,723 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:42:42,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-09 10:42:42,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=220, Unknown=3, NotChecked=0, Total=306 [2020-10-09 10:42:42,724 INFO L87 Difference]: Start difference. First operand 275 states and 736 transitions. Second operand 18 states. [2020-10-09 10:42:46,935 WARN L193 SmtUtils]: Spent 4.11 s on a formula simplification. DAG size of input: 54 DAG size of output: 38 [2020-10-09 10:42:51,507 WARN L193 SmtUtils]: Spent 4.11 s on a formula simplification. DAG size of input: 47 DAG size of output: 37 [2020-10-09 10:42:51,791 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 23 [2020-10-09 10:42:56,394 WARN L193 SmtUtils]: Spent 2.04 s on a formula simplification that was a NOOP. DAG size: 32 [2020-10-09 10:43:21,902 WARN L193 SmtUtils]: Spent 4.66 s on a formula simplification. DAG size of input: 47 DAG size of output: 29 [2020-10-09 10:43:30,386 WARN L193 SmtUtils]: Spent 4.08 s on a formula simplification. DAG size of input: 24 DAG size of output: 22 [2020-10-09 10:44:13,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:44:13,244 INFO L93 Difference]: Finished difference Result 461 states and 1154 transitions. [2020-10-09 10:44:13,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-09 10:44:13,249 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 14 [2020-10-09 10:44:13,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:44:13,249 INFO L225 Difference]: With dead ends: 461 [2020-10-09 10:44:13,249 INFO L226 Difference]: Without dead ends: 454 [2020-10-09 10:44:13,250 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 5 SyntacticMatches, 3 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 619 ImplicationChecksByTransitivity, 66.0s TimeCoverageRelationStatistics Valid=556, Invalid=1408, Unknown=16, NotChecked=0, Total=1980 [2020-10-09 10:44:13,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 454 states. [2020-10-09 10:44:13,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 454 to 273. [2020-10-09 10:44:13,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 273 states. [2020-10-09 10:44:13,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 726 transitions. [2020-10-09 10:44:13,254 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 726 transitions. Word has length 14 [2020-10-09 10:44:13,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:44:13,254 INFO L481 AbstractCegarLoop]: Abstraction has 273 states and 726 transitions. [2020-10-09 10:44:13,254 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-09 10:44:13,254 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 726 transitions. [2020-10-09 10:44:13,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:44:13,255 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:44:13,255 INFO L421 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:44:13,455 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 219 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable225 [2020-10-09 10:44:13,455 INFO L429 AbstractCegarLoop]: === Iteration 227 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:44:13,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:44:13,456 INFO L82 PathProgramCache]: Analyzing trace with hash 146086430, now seen corresponding path program 198 times [2020-10-09 10:44:13,456 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:44:13,456 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115892469] [2020-10-09 10:44:13,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:44:13,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:44:13,599 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:44:13,600 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115892469] [2020-10-09 10:44:13,600 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [70911570] [2020-10-09 10:44:13,600 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 220 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 220 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:44:13,639 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-09 10:44:13,639 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:44:13,640 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:44:13,641 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:44:13,873 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:44:13,873 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:44:13,874 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:44:13,874 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392922812] [2020-10-09 10:44:13,874 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:44:13,874 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:44:13,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:44:13,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=203, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:44:13,875 INFO L87 Difference]: Start difference. First operand 273 states and 726 transitions. Second operand 17 states. [2020-10-09 10:44:14,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:44:14,374 INFO L93 Difference]: Finished difference Result 351 states and 887 transitions. [2020-10-09 10:44:14,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-09 10:44:14,376 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-09 10:44:14,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:44:14,376 INFO L225 Difference]: With dead ends: 351 [2020-10-09 10:44:14,376 INFO L226 Difference]: Without dead ends: 338 [2020-10-09 10:44:14,377 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=214, Invalid=488, Unknown=0, NotChecked=0, Total=702 [2020-10-09 10:44:14,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2020-10-09 10:44:14,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 274. [2020-10-09 10:44:14,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 274 states. [2020-10-09 10:44:14,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 727 transitions. [2020-10-09 10:44:14,381 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 727 transitions. Word has length 14 [2020-10-09 10:44:14,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:44:14,381 INFO L481 AbstractCegarLoop]: Abstraction has 274 states and 727 transitions. [2020-10-09 10:44:14,381 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:44:14,381 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 727 transitions. [2020-10-09 10:44:14,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:44:14,382 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:44:14,382 INFO L421 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:44:14,582 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 220 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable226 [2020-10-09 10:44:14,582 INFO L429 AbstractCegarLoop]: === Iteration 228 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:44:14,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:44:14,583 INFO L82 PathProgramCache]: Analyzing trace with hash 146108750, now seen corresponding path program 199 times [2020-10-09 10:44:14,583 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:44:14,583 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495136246] [2020-10-09 10:44:14,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:44:14,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:44:14,733 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:44:14,733 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495136246] [2020-10-09 10:44:14,733 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1409842260] [2020-10-09 10:44:14,734 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 221 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 221 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:44:14,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:44:14,773 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:44:14,773 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:44:15,002 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-09 10:44:15,027 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:44:15,028 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:44:15,028 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:44:15,028 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863633405] [2020-10-09 10:44:15,028 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:44:15,028 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:44:15,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:44:15,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:44:15,029 INFO L87 Difference]: Start difference. First operand 274 states and 727 transitions. Second operand 17 states. [2020-10-09 10:44:15,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:44:15,703 INFO L93 Difference]: Finished difference Result 354 states and 891 transitions. [2020-10-09 10:44:15,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-09 10:44:15,704 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-09 10:44:15,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:44:15,705 INFO L225 Difference]: With dead ends: 354 [2020-10-09 10:44:15,705 INFO L226 Difference]: Without dead ends: 330 [2020-10-09 10:44:15,705 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 182 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=258, Invalid=554, Unknown=0, NotChecked=0, Total=812 [2020-10-09 10:44:15,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2020-10-09 10:44:15,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 267. [2020-10-09 10:44:15,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 267 states. [2020-10-09 10:44:15,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 713 transitions. [2020-10-09 10:44:15,709 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 713 transitions. Word has length 14 [2020-10-09 10:44:15,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:44:15,710 INFO L481 AbstractCegarLoop]: Abstraction has 267 states and 713 transitions. [2020-10-09 10:44:15,710 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:44:15,710 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 713 transitions. [2020-10-09 10:44:15,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:44:15,710 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:44:15,710 INFO L421 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:44:15,910 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable227,221 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:44:15,911 INFO L429 AbstractCegarLoop]: === Iteration 229 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:44:15,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:44:15,911 INFO L82 PathProgramCache]: Analyzing trace with hash 2034084541, now seen corresponding path program 200 times [2020-10-09 10:44:15,912 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:44:15,912 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198554786] [2020-10-09 10:44:15,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:44:15,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:44:16,070 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:44:16,070 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198554786] [2020-10-09 10:44:16,070 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1799215695] [2020-10-09 10:44:16,070 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 222 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 222 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:44:16,109 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-09 10:44:16,109 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:44:16,110 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:44:16,110 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:44:16,363 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:44:16,363 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:44:16,363 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:44:16,364 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140164553] [2020-10-09 10:44:16,364 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:44:16,364 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:44:16,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:44:16,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:44:16,364 INFO L87 Difference]: Start difference. First operand 267 states and 713 transitions. Second operand 17 states. [2020-10-09 10:44:16,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:44:16,835 INFO L93 Difference]: Finished difference Result 347 states and 876 transitions. [2020-10-09 10:44:16,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-09 10:44:16,836 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-09 10:44:16,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:44:16,837 INFO L225 Difference]: With dead ends: 347 [2020-10-09 10:44:16,837 INFO L226 Difference]: Without dead ends: 344 [2020-10-09 10:44:16,837 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=179, Invalid=421, Unknown=0, NotChecked=0, Total=600 [2020-10-09 10:44:16,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2020-10-09 10:44:16,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 270. [2020-10-09 10:44:16,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 270 states. [2020-10-09 10:44:16,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 722 transitions. [2020-10-09 10:44:16,842 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 722 transitions. Word has length 14 [2020-10-09 10:44:16,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:44:16,842 INFO L481 AbstractCegarLoop]: Abstraction has 270 states and 722 transitions. [2020-10-09 10:44:16,842 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:44:16,843 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 722 transitions. [2020-10-09 10:44:16,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:44:16,843 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:44:16,843 INFO L421 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:44:17,043 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 222 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable228 [2020-10-09 10:44:17,044 INFO L429 AbstractCegarLoop]: === Iteration 230 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:44:17,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:44:17,044 INFO L82 PathProgramCache]: Analyzing trace with hash 2034085502, now seen corresponding path program 201 times [2020-10-09 10:44:17,044 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:44:17,045 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367072947] [2020-10-09 10:44:17,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:44:17,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:44:17,201 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:44:17,202 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367072947] [2020-10-09 10:44:17,202 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [71770079] [2020-10-09 10:44:17,202 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 223 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 223 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:44:17,245 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-09 10:44:17,246 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:44:17,246 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:44:17,247 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:44:17,514 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:44:17,514 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:44:17,514 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:44:17,515 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772868975] [2020-10-09 10:44:17,515 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:44:17,515 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:44:17,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:44:17,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=207, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:44:17,515 INFO L87 Difference]: Start difference. First operand 270 states and 722 transitions. Second operand 17 states. [2020-10-09 10:44:18,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:44:18,080 INFO L93 Difference]: Finished difference Result 367 states and 918 transitions. [2020-10-09 10:44:18,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-09 10:44:18,081 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-09 10:44:18,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:44:18,082 INFO L225 Difference]: With dead ends: 367 [2020-10-09 10:44:18,083 INFO L226 Difference]: Without dead ends: 363 [2020-10-09 10:44:18,083 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=195, Invalid=455, Unknown=0, NotChecked=0, Total=650 [2020-10-09 10:44:18,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2020-10-09 10:44:18,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 269. [2020-10-09 10:44:18,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 269 states. [2020-10-09 10:44:18,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 719 transitions. [2020-10-09 10:44:18,087 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 719 transitions. Word has length 14 [2020-10-09 10:44:18,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:44:18,088 INFO L481 AbstractCegarLoop]: Abstraction has 269 states and 719 transitions. [2020-10-09 10:44:18,088 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:44:18,088 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 719 transitions. [2020-10-09 10:44:18,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:44:18,088 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:44:18,088 INFO L421 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:44:18,288 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable229,223 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:44:18,289 INFO L429 AbstractCegarLoop]: === Iteration 231 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:44:18,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:44:18,289 INFO L82 PathProgramCache]: Analyzing trace with hash 2034114332, now seen corresponding path program 202 times [2020-10-09 10:44:18,290 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:44:18,290 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979606872] [2020-10-09 10:44:18,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:44:18,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:44:18,443 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:44:18,444 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979606872] [2020-10-09 10:44:18,444 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2001601349] [2020-10-09 10:44:18,444 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 224 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 224 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:44:18,482 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-09 10:44:18,483 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:44:18,483 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:44:18,484 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:44:18,895 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:44:18,895 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:44:18,895 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:44:18,895 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877415272] [2020-10-09 10:44:18,895 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:44:18,895 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:44:18,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:44:18,896 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:44:18,896 INFO L87 Difference]: Start difference. First operand 269 states and 719 transitions. Second operand 17 states. [2020-10-09 10:44:19,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:44:19,718 INFO L93 Difference]: Finished difference Result 391 states and 972 transitions. [2020-10-09 10:44:19,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-09 10:44:19,720 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-09 10:44:19,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:44:19,721 INFO L225 Difference]: With dead ends: 391 [2020-10-09 10:44:19,721 INFO L226 Difference]: Without dead ends: 386 [2020-10-09 10:44:19,721 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 207 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=254, Invalid=558, Unknown=0, NotChecked=0, Total=812 [2020-10-09 10:44:19,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386 states. [2020-10-09 10:44:19,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386 to 274. [2020-10-09 10:44:19,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 274 states. [2020-10-09 10:44:19,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 732 transitions. [2020-10-09 10:44:19,725 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 732 transitions. Word has length 14 [2020-10-09 10:44:19,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:44:19,725 INFO L481 AbstractCegarLoop]: Abstraction has 274 states and 732 transitions. [2020-10-09 10:44:19,725 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:44:19,725 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 732 transitions. [2020-10-09 10:44:19,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:44:19,725 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:44:19,726 INFO L421 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:44:19,926 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable230,224 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:44:19,926 INFO L429 AbstractCegarLoop]: === Iteration 232 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:44:19,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:44:19,927 INFO L82 PathProgramCache]: Analyzing trace with hash 2035009023, now seen corresponding path program 203 times [2020-10-09 10:44:19,927 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:44:19,927 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874839679] [2020-10-09 10:44:19,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:44:19,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:44:20,123 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:44:20,124 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874839679] [2020-10-09 10:44:20,124 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1006209449] [2020-10-09 10:44:20,124 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 225 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 225 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:44:20,164 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-09 10:44:20,165 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:44:20,166 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:44:20,166 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:44:20,422 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:44:20,422 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:44:20,422 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:44:20,422 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155628634] [2020-10-09 10:44:20,423 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:44:20,423 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:44:20,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:44:20,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=203, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:44:20,423 INFO L87 Difference]: Start difference. First operand 274 states and 732 transitions. Second operand 17 states. [2020-10-09 10:44:20,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:44:20,970 INFO L93 Difference]: Finished difference Result 391 states and 967 transitions. [2020-10-09 10:44:20,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-09 10:44:20,971 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-09 10:44:20,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:44:20,972 INFO L225 Difference]: With dead ends: 391 [2020-10-09 10:44:20,972 INFO L226 Difference]: Without dead ends: 373 [2020-10-09 10:44:20,973 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 173 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=222, Invalid=480, Unknown=0, NotChecked=0, Total=702 [2020-10-09 10:44:20,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373 states. [2020-10-09 10:44:20,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 373 to 274. [2020-10-09 10:44:20,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 274 states. [2020-10-09 10:44:20,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 728 transitions. [2020-10-09 10:44:20,977 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 728 transitions. Word has length 14 [2020-10-09 10:44:20,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:44:20,977 INFO L481 AbstractCegarLoop]: Abstraction has 274 states and 728 transitions. [2020-10-09 10:44:20,977 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:44:20,977 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 728 transitions. [2020-10-09 10:44:20,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:44:20,977 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:44:20,977 INFO L421 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:44:21,178 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable231,225 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:44:21,178 INFO L429 AbstractCegarLoop]: === Iteration 233 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:44:21,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:44:21,179 INFO L82 PathProgramCache]: Analyzing trace with hash 2062713692, now seen corresponding path program 204 times [2020-10-09 10:44:21,179 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:44:21,179 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604006366] [2020-10-09 10:44:21,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:44:21,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:44:21,357 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:44:21,358 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604006366] [2020-10-09 10:44:21,358 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1434152447] [2020-10-09 10:44:21,358 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 226 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 226 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:44:21,398 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-09 10:44:21,398 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:44:21,399 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:44:21,400 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:44:21,711 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:44:21,711 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:44:21,711 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:44:21,711 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116710351] [2020-10-09 10:44:21,711 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:44:21,712 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:44:21,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:44:21,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:44:21,712 INFO L87 Difference]: Start difference. First operand 274 states and 728 transitions. Second operand 17 states. [2020-10-09 10:44:22,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:44:22,239 INFO L93 Difference]: Finished difference Result 362 states and 910 transitions. [2020-10-09 10:44:22,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-09 10:44:22,240 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-09 10:44:22,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:44:22,241 INFO L225 Difference]: With dead ends: 362 [2020-10-09 10:44:22,241 INFO L226 Difference]: Without dead ends: 357 [2020-10-09 10:44:22,242 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=186, Invalid=414, Unknown=0, NotChecked=0, Total=600 [2020-10-09 10:44:22,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357 states. [2020-10-09 10:44:22,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357 to 271. [2020-10-09 10:44:22,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 271 states. [2020-10-09 10:44:22,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 721 transitions. [2020-10-09 10:44:22,246 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 721 transitions. Word has length 14 [2020-10-09 10:44:22,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:44:22,247 INFO L481 AbstractCegarLoop]: Abstraction has 271 states and 721 transitions. [2020-10-09 10:44:22,247 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:44:22,247 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 721 transitions. [2020-10-09 10:44:22,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:44:22,247 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:44:22,247 INFO L421 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:44:22,447 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 226 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable232 [2020-10-09 10:44:22,448 INFO L429 AbstractCegarLoop]: === Iteration 234 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:44:22,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:44:22,448 INFO L82 PathProgramCache]: Analyzing trace with hash 2063667004, now seen corresponding path program 205 times [2020-10-09 10:44:22,449 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:44:22,449 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998256805] [2020-10-09 10:44:22,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:44:22,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:44:22,672 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:44:22,672 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998256805] [2020-10-09 10:44:22,672 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1328061760] [2020-10-09 10:44:22,672 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 227 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 227 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:44:22,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:44:22,711 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:44:22,712 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:44:22,979 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:44:22,979 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:44:22,980 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:44:22,980 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735752740] [2020-10-09 10:44:22,980 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:44:22,980 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:44:22,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:44:22,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:44:22,981 INFO L87 Difference]: Start difference. First operand 271 states and 721 transitions. Second operand 17 states. [2020-10-09 10:44:23,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:44:23,316 INFO L93 Difference]: Finished difference Result 339 states and 853 transitions. [2020-10-09 10:44:23,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-09 10:44:23,317 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-09 10:44:23,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:44:23,318 INFO L225 Difference]: With dead ends: 339 [2020-10-09 10:44:23,318 INFO L226 Difference]: Without dead ends: 326 [2020-10-09 10:44:23,318 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=141, Invalid=321, Unknown=0, NotChecked=0, Total=462 [2020-10-09 10:44:23,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2020-10-09 10:44:23,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 265. [2020-10-09 10:44:23,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 265 states. [2020-10-09 10:44:23,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 709 transitions. [2020-10-09 10:44:23,322 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 709 transitions. Word has length 14 [2020-10-09 10:44:23,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:44:23,322 INFO L481 AbstractCegarLoop]: Abstraction has 265 states and 709 transitions. [2020-10-09 10:44:23,322 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:44:23,322 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 709 transitions. [2020-10-09 10:44:23,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:44:23,323 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:44:23,323 INFO L421 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:44:23,525 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 227 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable233 [2020-10-09 10:44:23,525 INFO L429 AbstractCegarLoop]: === Iteration 235 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:44:23,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:44:23,526 INFO L82 PathProgramCache]: Analyzing trace with hash 313362251, now seen corresponding path program 206 times [2020-10-09 10:44:23,526 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:44:23,526 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745654747] [2020-10-09 10:44:23,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:44:23,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:44:23,675 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:44:23,675 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745654747] [2020-10-09 10:44:23,675 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [432588328] [2020-10-09 10:44:23,676 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 228 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 228 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:44:23,714 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-09 10:44:23,714 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:44:23,715 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:44:23,716 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:44:24,002 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:44:24,002 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:44:24,002 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:44:24,002 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772489941] [2020-10-09 10:44:24,003 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:44:24,003 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:44:24,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:44:24,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:44:24,003 INFO L87 Difference]: Start difference. First operand 265 states and 709 transitions. Second operand 17 states. [2020-10-09 10:44:24,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:44:24,508 INFO L93 Difference]: Finished difference Result 346 states and 872 transitions. [2020-10-09 10:44:24,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-09 10:44:24,510 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-09 10:44:24,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:44:24,511 INFO L225 Difference]: With dead ends: 346 [2020-10-09 10:44:24,512 INFO L226 Difference]: Without dead ends: 343 [2020-10-09 10:44:24,512 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=178, Invalid=472, Unknown=0, NotChecked=0, Total=650 [2020-10-09 10:44:24,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2020-10-09 10:44:24,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 267. [2020-10-09 10:44:24,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 267 states. [2020-10-09 10:44:24,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 715 transitions. [2020-10-09 10:44:24,516 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 715 transitions. Word has length 14 [2020-10-09 10:44:24,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:44:24,516 INFO L481 AbstractCegarLoop]: Abstraction has 267 states and 715 transitions. [2020-10-09 10:44:24,516 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:44:24,516 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 715 transitions. [2020-10-09 10:44:24,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:44:24,517 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:44:24,517 INFO L421 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:44:24,717 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 228 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable234 [2020-10-09 10:44:24,717 INFO L429 AbstractCegarLoop]: === Iteration 236 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:44:24,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:44:24,718 INFO L82 PathProgramCache]: Analyzing trace with hash 313363212, now seen corresponding path program 207 times [2020-10-09 10:44:24,718 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:44:24,718 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709816565] [2020-10-09 10:44:24,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:44:24,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:44:24,868 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:44:24,868 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709816565] [2020-10-09 10:44:24,868 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [86210696] [2020-10-09 10:44:24,868 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 229 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 229 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:44:24,907 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-09 10:44:24,907 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:44:24,908 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:44:24,908 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:44:25,202 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:44:25,203 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:44:25,203 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:44:25,203 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495257995] [2020-10-09 10:44:25,204 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:44:25,204 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:44:25,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:44:25,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:44:25,204 INFO L87 Difference]: Start difference. First operand 267 states and 715 transitions. Second operand 17 states. [2020-10-09 10:44:25,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:44:25,764 INFO L93 Difference]: Finished difference Result 361 states and 905 transitions. [2020-10-09 10:44:25,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-09 10:44:25,766 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-09 10:44:25,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:44:25,766 INFO L225 Difference]: With dead ends: 361 [2020-10-09 10:44:25,766 INFO L226 Difference]: Without dead ends: 357 [2020-10-09 10:44:25,767 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=174, Invalid=476, Unknown=0, NotChecked=0, Total=650 [2020-10-09 10:44:25,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357 states. [2020-10-09 10:44:25,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357 to 266. [2020-10-09 10:44:25,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 266 states. [2020-10-09 10:44:25,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 712 transitions. [2020-10-09 10:44:25,771 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 712 transitions. Word has length 14 [2020-10-09 10:44:25,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:44:25,771 INFO L481 AbstractCegarLoop]: Abstraction has 266 states and 712 transitions. [2020-10-09 10:44:25,771 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:44:25,771 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 712 transitions. [2020-10-09 10:44:25,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:44:25,771 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:44:25,772 INFO L421 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:44:25,972 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 229 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable235 [2020-10-09 10:44:25,972 INFO L429 AbstractCegarLoop]: === Iteration 237 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:44:25,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:44:25,973 INFO L82 PathProgramCache]: Analyzing trace with hash 313392042, now seen corresponding path program 208 times [2020-10-09 10:44:25,973 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:44:25,973 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955480493] [2020-10-09 10:44:25,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:44:25,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:44:26,119 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:44:26,119 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955480493] [2020-10-09 10:44:26,119 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1310493134] [2020-10-09 10:44:26,120 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 230 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 230 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:44:26,158 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-09 10:44:26,158 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:44:26,158 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:44:26,159 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:44:26,586 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:44:26,586 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:44:26,586 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:44:26,586 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275975928] [2020-10-09 10:44:26,587 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:44:26,587 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:44:26,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:44:26,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:44:26,587 INFO L87 Difference]: Start difference. First operand 266 states and 712 transitions. Second operand 17 states. [2020-10-09 10:44:27,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:44:27,498 INFO L93 Difference]: Finished difference Result 401 states and 990 transitions. [2020-10-09 10:44:27,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-09 10:44:27,499 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-09 10:44:27,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:44:27,500 INFO L225 Difference]: With dead ends: 401 [2020-10-09 10:44:27,500 INFO L226 Difference]: Without dead ends: 388 [2020-10-09 10:44:27,500 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 236 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=259, Invalid=671, Unknown=0, NotChecked=0, Total=930 [2020-10-09 10:44:27,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 388 states. [2020-10-09 10:44:27,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 388 to 271. [2020-10-09 10:44:27,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 271 states. [2020-10-09 10:44:27,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 725 transitions. [2020-10-09 10:44:27,505 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 725 transitions. Word has length 14 [2020-10-09 10:44:27,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:44:27,505 INFO L481 AbstractCegarLoop]: Abstraction has 271 states and 725 transitions. [2020-10-09 10:44:27,505 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:44:27,505 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 725 transitions. [2020-10-09 10:44:27,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:44:27,506 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:44:27,506 INFO L421 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:44:27,706 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 230 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable236 [2020-10-09 10:44:27,706 INFO L429 AbstractCegarLoop]: === Iteration 238 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:44:27,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:44:27,707 INFO L82 PathProgramCache]: Analyzing trace with hash 314286733, now seen corresponding path program 209 times [2020-10-09 10:44:27,707 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:44:27,707 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540680130] [2020-10-09 10:44:27,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:44:27,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:44:27,856 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:44:27,857 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540680130] [2020-10-09 10:44:27,857 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1424336289] [2020-10-09 10:44:27,857 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 231 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 231 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:44:27,896 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-09 10:44:27,896 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:44:27,897 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:44:27,898 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:44:28,162 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:44:28,162 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:44:28,162 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:44:28,163 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859784091] [2020-10-09 10:44:28,163 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:44:28,163 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:44:28,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:44:28,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:44:28,163 INFO L87 Difference]: Start difference. First operand 271 states and 725 transitions. Second operand 17 states. [2020-10-09 10:44:28,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:44:28,828 INFO L93 Difference]: Finished difference Result 381 states and 946 transitions. [2020-10-09 10:44:28,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-09 10:44:28,829 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-09 10:44:28,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:44:28,830 INFO L225 Difference]: With dead ends: 381 [2020-10-09 10:44:28,830 INFO L226 Difference]: Without dead ends: 363 [2020-10-09 10:44:28,831 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 182 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=220, Invalid=592, Unknown=0, NotChecked=0, Total=812 [2020-10-09 10:44:28,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2020-10-09 10:44:28,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 270. [2020-10-09 10:44:28,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 270 states. [2020-10-09 10:44:28,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 719 transitions. [2020-10-09 10:44:28,835 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 719 transitions. Word has length 14 [2020-10-09 10:44:28,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:44:28,836 INFO L481 AbstractCegarLoop]: Abstraction has 270 states and 719 transitions. [2020-10-09 10:44:28,836 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:44:28,836 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 719 transitions. [2020-10-09 10:44:28,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:44:28,836 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:44:28,836 INFO L421 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:44:29,036 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 231 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable237 [2020-10-09 10:44:29,037 INFO L429 AbstractCegarLoop]: === Iteration 239 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:44:29,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:44:29,037 INFO L82 PathProgramCache]: Analyzing trace with hash 950591741, now seen corresponding path program 210 times [2020-10-09 10:44:29,038 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:44:29,038 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102523647] [2020-10-09 10:44:29,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:44:29,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:44:29,190 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:44:29,190 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102523647] [2020-10-09 10:44:29,190 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [195024175] [2020-10-09 10:44:29,190 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 232 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 232 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:44:29,232 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2020-10-09 10:44:29,232 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:44:29,232 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:44:29,233 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:44:29,509 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:44:29,509 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:44:29,509 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:44:29,509 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364924706] [2020-10-09 10:44:29,510 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:44:29,510 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:44:29,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:44:29,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:44:29,510 INFO L87 Difference]: Start difference. First operand 270 states and 719 transitions. Second operand 17 states. [2020-10-09 10:44:30,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:44:30,211 INFO L93 Difference]: Finished difference Result 354 states and 884 transitions. [2020-10-09 10:44:30,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-09 10:44:30,213 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-09 10:44:30,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:44:30,214 INFO L225 Difference]: With dead ends: 354 [2020-10-09 10:44:30,214 INFO L226 Difference]: Without dead ends: 351 [2020-10-09 10:44:30,214 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 238 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=258, Invalid=672, Unknown=0, NotChecked=0, Total=930 [2020-10-09 10:44:30,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2020-10-09 10:44:30,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 271. [2020-10-09 10:44:30,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 271 states. [2020-10-09 10:44:30,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 722 transitions. [2020-10-09 10:44:30,223 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 722 transitions. Word has length 14 [2020-10-09 10:44:30,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:44:30,223 INFO L481 AbstractCegarLoop]: Abstraction has 271 states and 722 transitions. [2020-10-09 10:44:30,223 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:44:30,223 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 722 transitions. [2020-10-09 10:44:30,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:44:30,224 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:44:30,224 INFO L421 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:44:30,424 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 232 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable238 [2020-10-09 10:44:30,424 INFO L429 AbstractCegarLoop]: === Iteration 240 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:44:30,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:44:30,425 INFO L82 PathProgramCache]: Analyzing trace with hash 950592702, now seen corresponding path program 211 times [2020-10-09 10:44:30,425 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:44:30,425 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721988711] [2020-10-09 10:44:30,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:44:30,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:44:30,582 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:44:30,583 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721988711] [2020-10-09 10:44:30,583 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1845138390] [2020-10-09 10:44:30,583 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 233 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 233 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:44:30,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:44:30,621 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:44:30,622 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:44:30,905 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:44:30,905 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:44:30,905 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:44:30,906 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413959764] [2020-10-09 10:44:30,906 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:44:30,906 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:44:30,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:44:30,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:44:30,907 INFO L87 Difference]: Start difference. First operand 271 states and 722 transitions. Second operand 17 states. [2020-10-09 10:44:31,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:44:31,597 INFO L93 Difference]: Finished difference Result 359 states and 897 transitions. [2020-10-09 10:44:31,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-09 10:44:31,599 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-09 10:44:31,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:44:31,599 INFO L225 Difference]: With dead ends: 359 [2020-10-09 10:44:31,600 INFO L226 Difference]: Without dead ends: 355 [2020-10-09 10:44:31,600 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=220, Invalid=592, Unknown=0, NotChecked=0, Total=812 [2020-10-09 10:44:31,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2020-10-09 10:44:31,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 270. [2020-10-09 10:44:31,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 270 states. [2020-10-09 10:44:31,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 719 transitions. [2020-10-09 10:44:31,604 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 719 transitions. Word has length 14 [2020-10-09 10:44:31,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:44:31,604 INFO L481 AbstractCegarLoop]: Abstraction has 270 states and 719 transitions. [2020-10-09 10:44:31,604 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:44:31,604 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 719 transitions. [2020-10-09 10:44:31,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:44:31,605 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:44:31,605 INFO L421 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:44:31,805 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 233 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable239 [2020-10-09 10:44:31,806 INFO L429 AbstractCegarLoop]: === Iteration 241 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:44:31,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:44:31,806 INFO L82 PathProgramCache]: Analyzing trace with hash 950621532, now seen corresponding path program 212 times [2020-10-09 10:44:31,806 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:44:31,807 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556190565] [2020-10-09 10:44:31,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:44:31,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:44:31,960 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:44:31,961 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556190565] [2020-10-09 10:44:31,961 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1034950477] [2020-10-09 10:44:31,961 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 234 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 234 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:44:32,001 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-09 10:44:32,001 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:44:32,002 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:44:32,003 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:44:32,411 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:44:32,412 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:44:32,412 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:44:32,412 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311513910] [2020-10-09 10:44:32,412 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:44:32,412 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:44:32,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:44:32,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=212, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:44:32,413 INFO L87 Difference]: Start difference. First operand 270 states and 719 transitions. Second operand 17 states. [2020-10-09 10:44:33,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:44:33,443 INFO L93 Difference]: Finished difference Result 386 states and 956 transitions. [2020-10-09 10:44:33,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-09 10:44:33,444 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-09 10:44:33,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:44:33,445 INFO L225 Difference]: With dead ends: 386 [2020-10-09 10:44:33,445 INFO L226 Difference]: Without dead ends: 381 [2020-10-09 10:44:33,445 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 301 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=305, Invalid=817, Unknown=0, NotChecked=0, Total=1122 [2020-10-09 10:44:33,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2020-10-09 10:44:33,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 269. [2020-10-09 10:44:33,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 269 states. [2020-10-09 10:44:33,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 715 transitions. [2020-10-09 10:44:33,450 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 715 transitions. Word has length 14 [2020-10-09 10:44:33,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:44:33,450 INFO L481 AbstractCegarLoop]: Abstraction has 269 states and 715 transitions. [2020-10-09 10:44:33,450 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:44:33,450 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 715 transitions. [2020-10-09 10:44:33,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:44:33,451 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:44:33,451 INFO L421 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:44:33,651 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable240,234 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:44:33,652 INFO L429 AbstractCegarLoop]: === Iteration 242 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:44:33,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:44:33,652 INFO L82 PathProgramCache]: Analyzing trace with hash 971147531, now seen corresponding path program 213 times [2020-10-09 10:44:33,652 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:44:33,652 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308369306] [2020-10-09 10:44:33,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:44:33,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:44:33,804 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:44:33,805 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308369306] [2020-10-09 10:44:33,805 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [34434327] [2020-10-09 10:44:33,805 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 235 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 235 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:44:33,845 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-10-09 10:44:33,845 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:44:33,846 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:44:33,846 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:44:34,119 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:44:34,120 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:44:34,120 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:44:34,120 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662430650] [2020-10-09 10:44:34,120 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:44:34,120 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:44:34,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:44:34,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:44:34,121 INFO L87 Difference]: Start difference. First operand 269 states and 715 transitions. Second operand 17 states. [2020-10-09 10:44:34,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:44:34,972 INFO L93 Difference]: Finished difference Result 348 states and 872 transitions. [2020-10-09 10:44:34,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-09 10:44:34,974 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-09 10:44:34,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:44:34,974 INFO L225 Difference]: With dead ends: 348 [2020-10-09 10:44:34,975 INFO L226 Difference]: Without dead ends: 345 [2020-10-09 10:44:34,975 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 267 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=303, Invalid=753, Unknown=0, NotChecked=0, Total=1056 [2020-10-09 10:44:34,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2020-10-09 10:44:34,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 269. [2020-10-09 10:44:34,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 269 states. [2020-10-09 10:44:34,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 715 transitions. [2020-10-09 10:44:34,979 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 715 transitions. Word has length 14 [2020-10-09 10:44:34,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:44:34,979 INFO L481 AbstractCegarLoop]: Abstraction has 269 states and 715 transitions. [2020-10-09 10:44:34,979 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:44:34,979 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 715 transitions. [2020-10-09 10:44:34,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:44:34,980 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:44:34,980 INFO L421 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:44:35,180 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable241,235 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:44:35,181 INFO L429 AbstractCegarLoop]: === Iteration 243 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:44:35,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:44:35,181 INFO L82 PathProgramCache]: Analyzing trace with hash 971148492, now seen corresponding path program 214 times [2020-10-09 10:44:35,181 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:44:35,182 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793741999] [2020-10-09 10:44:35,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:44:35,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:44:35,339 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:44:35,340 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793741999] [2020-10-09 10:44:35,340 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1440388051] [2020-10-09 10:44:35,340 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 236 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 236 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:44:35,379 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-09 10:44:35,379 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:44:35,380 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:44:35,380 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:44:35,680 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:44:35,680 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:44:35,681 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:44:35,681 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767405285] [2020-10-09 10:44:35,681 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:44:35,681 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:44:35,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:44:35,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:44:35,682 INFO L87 Difference]: Start difference. First operand 269 states and 715 transitions. Second operand 17 states. [2020-10-09 10:44:36,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:44:36,552 INFO L93 Difference]: Finished difference Result 350 states and 873 transitions. [2020-10-09 10:44:36,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-09 10:44:36,553 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-09 10:44:36,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:44:36,554 INFO L225 Difference]: With dead ends: 350 [2020-10-09 10:44:36,554 INFO L226 Difference]: Without dead ends: 346 [2020-10-09 10:44:36,555 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 248 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=277, Invalid=715, Unknown=0, NotChecked=0, Total=992 [2020-10-09 10:44:36,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2020-10-09 10:44:36,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 269. [2020-10-09 10:44:36,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 269 states. [2020-10-09 10:44:36,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 714 transitions. [2020-10-09 10:44:36,560 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 714 transitions. Word has length 14 [2020-10-09 10:44:36,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:44:36,561 INFO L481 AbstractCegarLoop]: Abstraction has 269 states and 714 transitions. [2020-10-09 10:44:36,561 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:44:36,561 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 714 transitions. [2020-10-09 10:44:36,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:44:36,561 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:44:36,561 INFO L421 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:44:36,772 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable242,236 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:44:36,772 INFO L429 AbstractCegarLoop]: === Iteration 244 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:44:36,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:44:36,773 INFO L82 PathProgramCache]: Analyzing trace with hash 971810621, now seen corresponding path program 215 times [2020-10-09 10:44:36,773 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:44:36,773 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427036763] [2020-10-09 10:44:36,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:44:36,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:44:36,925 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:44:36,926 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427036763] [2020-10-09 10:44:36,926 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2024584965] [2020-10-09 10:44:36,926 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 237 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 237 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:44:36,967 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2020-10-09 10:44:36,967 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:44:36,968 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:44:36,968 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:44:37,243 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:44:37,244 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:44:37,244 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:44:37,244 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075553009] [2020-10-09 10:44:37,244 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:44:37,244 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:44:37,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:44:37,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=203, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:44:37,245 INFO L87 Difference]: Start difference. First operand 269 states and 714 transitions. Second operand 17 states. [2020-10-09 10:44:38,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:44:38,216 INFO L93 Difference]: Finished difference Result 334 states and 840 transitions. [2020-10-09 10:44:38,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-09 10:44:38,218 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-09 10:44:38,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:44:38,219 INFO L225 Difference]: With dead ends: 334 [2020-10-09 10:44:38,219 INFO L226 Difference]: Without dead ends: 331 [2020-10-09 10:44:38,220 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 287 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=324, Invalid=798, Unknown=0, NotChecked=0, Total=1122 [2020-10-09 10:44:38,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2020-10-09 10:44:38,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 269. [2020-10-09 10:44:38,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 269 states. [2020-10-09 10:44:38,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 713 transitions. [2020-10-09 10:44:38,224 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 713 transitions. Word has length 14 [2020-10-09 10:44:38,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:44:38,224 INFO L481 AbstractCegarLoop]: Abstraction has 269 states and 713 transitions. [2020-10-09 10:44:38,224 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:44:38,224 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 713 transitions. [2020-10-09 10:44:38,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:44:38,224 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:44:38,225 INFO L421 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:44:38,425 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 237 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable243 [2020-10-09 10:44:38,425 INFO L429 AbstractCegarLoop]: === Iteration 245 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:44:38,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:44:38,426 INFO L82 PathProgramCache]: Analyzing trace with hash 971831980, now seen corresponding path program 216 times [2020-10-09 10:44:38,426 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:44:38,426 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166655866] [2020-10-09 10:44:38,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:44:38,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:44:38,584 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:44:38,584 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166655866] [2020-10-09 10:44:38,585 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [340381657] [2020-10-09 10:44:38,585 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 238 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 238 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:44:38,625 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-09 10:44:38,626 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:44:38,626 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:44:38,627 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:44:38,839 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 10:44:38,858 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:44:38,859 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:44:38,859 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:44:38,859 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078657477] [2020-10-09 10:44:38,859 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:44:38,859 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:44:38,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:44:38,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:44:38,860 INFO L87 Difference]: Start difference. First operand 269 states and 713 transitions. Second operand 17 states. [2020-10-09 10:44:39,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:44:39,459 INFO L93 Difference]: Finished difference Result 284 states and 731 transitions. [2020-10-09 10:44:39,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-09 10:44:39,461 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-09 10:44:39,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:44:39,462 INFO L225 Difference]: With dead ends: 284 [2020-10-09 10:44:39,462 INFO L226 Difference]: Without dead ends: 274 [2020-10-09 10:44:39,462 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=258, Invalid=554, Unknown=0, NotChecked=0, Total=812 [2020-10-09 10:44:39,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2020-10-09 10:44:39,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 261. [2020-10-09 10:44:39,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2020-10-09 10:44:39,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 686 transitions. [2020-10-09 10:44:39,466 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 686 transitions. Word has length 14 [2020-10-09 10:44:39,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:44:39,466 INFO L481 AbstractCegarLoop]: Abstraction has 261 states and 686 transitions. [2020-10-09 10:44:39,466 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:44:39,467 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 686 transitions. [2020-10-09 10:44:39,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:44:39,467 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:44:39,467 INFO L421 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:44:39,667 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable244,238 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:44:39,668 INFO L429 AbstractCegarLoop]: === Iteration 246 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:44:39,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:44:39,668 INFO L82 PathProgramCache]: Analyzing trace with hash 971832941, now seen corresponding path program 217 times [2020-10-09 10:44:39,669 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:44:39,669 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373342436] [2020-10-09 10:44:39,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:44:39,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:44:39,832 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:44:39,833 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373342436] [2020-10-09 10:44:39,833 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [51173152] [2020-10-09 10:44:39,833 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 239 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 239 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:44:39,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:44:39,877 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:44:39,877 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:44:40,118 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-09 10:44:40,188 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:44:40,189 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:44:40,189 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:44:40,189 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969173429] [2020-10-09 10:44:40,189 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:44:40,190 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:44:40,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:44:40,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:44:40,190 INFO L87 Difference]: Start difference. First operand 261 states and 686 transitions. Second operand 17 states. [2020-10-09 10:44:41,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:44:41,469 INFO L93 Difference]: Finished difference Result 365 states and 917 transitions. [2020-10-09 10:44:41,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-09 10:44:41,470 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-09 10:44:41,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:44:41,471 INFO L225 Difference]: With dead ends: 365 [2020-10-09 10:44:41,471 INFO L226 Difference]: Without dead ends: 360 [2020-10-09 10:44:41,471 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 349 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=384, Invalid=948, Unknown=0, NotChecked=0, Total=1332 [2020-10-09 10:44:41,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2020-10-09 10:44:41,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 259. [2020-10-09 10:44:41,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 259 states. [2020-10-09 10:44:41,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 680 transitions. [2020-10-09 10:44:41,476 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 680 transitions. Word has length 14 [2020-10-09 10:44:41,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:44:41,476 INFO L481 AbstractCegarLoop]: Abstraction has 259 states and 680 transitions. [2020-10-09 10:44:41,476 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:44:41,476 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 680 transitions. [2020-10-09 10:44:41,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:44:41,476 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:44:41,476 INFO L421 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:44:41,677 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 239 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable245 [2020-10-09 10:44:41,677 INFO L429 AbstractCegarLoop]: === Iteration 247 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:44:41,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:44:41,678 INFO L82 PathProgramCache]: Analyzing trace with hash 971840412, now seen corresponding path program 218 times [2020-10-09 10:44:41,678 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:44:41,678 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541801128] [2020-10-09 10:44:41,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:44:41,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:44:41,832 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:44:41,832 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541801128] [2020-10-09 10:44:41,833 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1094436477] [2020-10-09 10:44:41,833 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 240 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 240 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:44:41,871 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-09 10:44:41,872 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:44:41,872 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:44:41,873 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:44:42,220 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:44:42,221 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:44:42,221 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:44:42,221 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976334302] [2020-10-09 10:44:42,221 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:44:42,221 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:44:42,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:44:42,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=201, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:44:42,222 INFO L87 Difference]: Start difference. First operand 259 states and 680 transitions. Second operand 17 states. [2020-10-09 10:44:43,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:44:43,278 INFO L93 Difference]: Finished difference Result 357 states and 889 transitions. [2020-10-09 10:44:43,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-09 10:44:43,280 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-09 10:44:43,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:44:43,280 INFO L225 Difference]: With dead ends: 357 [2020-10-09 10:44:43,281 INFO L226 Difference]: Without dead ends: 353 [2020-10-09 10:44:43,281 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 319 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=335, Invalid=855, Unknown=0, NotChecked=0, Total=1190 [2020-10-09 10:44:43,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353 states. [2020-10-09 10:44:43,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353 to 261. [2020-10-09 10:44:43,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2020-10-09 10:44:43,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 687 transitions. [2020-10-09 10:44:43,285 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 687 transitions. Word has length 14 [2020-10-09 10:44:43,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:44:43,285 INFO L481 AbstractCegarLoop]: Abstraction has 261 states and 687 transitions. [2020-10-09 10:44:43,285 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:44:43,285 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 687 transitions. [2020-10-09 10:44:43,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:44:43,286 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:44:43,286 INFO L421 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:44:43,486 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 240 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable246 [2020-10-09 10:44:43,487 INFO L429 AbstractCegarLoop]: === Iteration 248 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:44:43,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:44:43,487 INFO L82 PathProgramCache]: Analyzing trace with hash 971861771, now seen corresponding path program 219 times [2020-10-09 10:44:43,487 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:44:43,487 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252429425] [2020-10-09 10:44:43,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:44:43,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:44:43,668 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:44:43,668 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252429425] [2020-10-09 10:44:43,668 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [640809311] [2020-10-09 10:44:43,668 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 241 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 241 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:44:43,710 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-09 10:44:43,710 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:44:43,711 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:44:43,711 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:44:43,962 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 10:44:44,019 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:44:44,027 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:44:44,027 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:44:44,027 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103600623] [2020-10-09 10:44:44,027 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:44:44,027 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:44:44,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:44:44,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:44:44,028 INFO L87 Difference]: Start difference. First operand 261 states and 687 transitions. Second operand 17 states. [2020-10-09 10:44:45,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:44:45,563 INFO L93 Difference]: Finished difference Result 385 states and 962 transitions. [2020-10-09 10:44:45,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-09 10:44:45,565 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-09 10:44:45,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:44:45,566 INFO L225 Difference]: With dead ends: 385 [2020-10-09 10:44:45,566 INFO L226 Difference]: Without dead ends: 380 [2020-10-09 10:44:45,567 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 370 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=419, Invalid=987, Unknown=0, NotChecked=0, Total=1406 [2020-10-09 10:44:45,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 380 states. [2020-10-09 10:44:45,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 380 to 261. [2020-10-09 10:44:45,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2020-10-09 10:44:45,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 687 transitions. [2020-10-09 10:44:45,576 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 687 transitions. Word has length 14 [2020-10-09 10:44:45,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:44:45,576 INFO L481 AbstractCegarLoop]: Abstraction has 261 states and 687 transitions. [2020-10-09 10:44:45,576 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:44:45,576 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 687 transitions. [2020-10-09 10:44:45,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:44:45,577 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:44:45,577 INFO L421 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:44:45,778 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable247,241 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:44:45,778 INFO L429 AbstractCegarLoop]: === Iteration 249 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:44:45,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:44:45,779 INFO L82 PathProgramCache]: Analyzing trace with hash 971862732, now seen corresponding path program 220 times [2020-10-09 10:44:45,779 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:44:45,779 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21479777] [2020-10-09 10:44:45,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:44:45,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:44:45,941 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:44:45,941 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21479777] [2020-10-09 10:44:45,942 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1140178310] [2020-10-09 10:44:45,942 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 242 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 242 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:44:45,980 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-09 10:44:45,981 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:44:45,981 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:44:45,982 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:44:46,234 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-09 10:44:46,282 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:44:46,282 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:44:46,282 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:44:46,282 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909209934] [2020-10-09 10:44:46,283 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:44:46,283 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:44:46,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:44:46,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:44:46,283 INFO L87 Difference]: Start difference. First operand 261 states and 687 transitions. Second operand 17 states. [2020-10-09 10:44:47,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:44:47,976 INFO L93 Difference]: Finished difference Result 385 states and 962 transitions. [2020-10-09 10:44:47,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-09 10:44:47,978 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-09 10:44:47,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:44:47,979 INFO L225 Difference]: With dead ends: 385 [2020-10-09 10:44:47,979 INFO L226 Difference]: Without dead ends: 379 [2020-10-09 10:44:47,980 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 446 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=476, Invalid=1084, Unknown=0, NotChecked=0, Total=1560 [2020-10-09 10:44:47,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2020-10-09 10:44:47,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 257. [2020-10-09 10:44:47,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 257 states. [2020-10-09 10:44:47,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 674 transitions. [2020-10-09 10:44:47,984 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 674 transitions. Word has length 14 [2020-10-09 10:44:47,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:44:47,984 INFO L481 AbstractCegarLoop]: Abstraction has 257 states and 674 transitions. [2020-10-09 10:44:47,984 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:44:47,984 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 674 transitions. [2020-10-09 10:44:47,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:44:47,985 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:44:47,985 INFO L421 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:44:48,192 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable248,242 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:44:48,193 INFO L429 AbstractCegarLoop]: === Iteration 250 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:44:48,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:44:48,193 INFO L82 PathProgramCache]: Analyzing trace with hash 972071052, now seen corresponding path program 221 times [2020-10-09 10:44:48,193 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:44:48,194 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691935403] [2020-10-09 10:44:48,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:44:48,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:44:48,329 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:44:48,329 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691935403] [2020-10-09 10:44:48,329 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1107382654] [2020-10-09 10:44:48,329 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 243 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 243 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:44:48,368 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-09 10:44:48,368 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:44:48,369 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:44:48,370 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:44:48,768 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:44:48,769 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:44:48,769 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:44:48,769 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133140293] [2020-10-09 10:44:48,769 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:44:48,769 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:44:48,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:44:48,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=207, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:44:48,769 INFO L87 Difference]: Start difference. First operand 257 states and 674 transitions. Second operand 17 states. [2020-10-09 10:44:50,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:44:50,031 INFO L93 Difference]: Finished difference Result 398 states and 973 transitions. [2020-10-09 10:44:50,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-09 10:44:50,034 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-09 10:44:50,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:44:50,035 INFO L225 Difference]: With dead ends: 398 [2020-10-09 10:44:50,035 INFO L226 Difference]: Without dead ends: 380 [2020-10-09 10:44:50,035 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 341 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=358, Invalid=902, Unknown=0, NotChecked=0, Total=1260 [2020-10-09 10:44:50,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 380 states. [2020-10-09 10:44:50,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 380 to 264. [2020-10-09 10:44:50,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 264 states. [2020-10-09 10:44:50,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 694 transitions. [2020-10-09 10:44:50,038 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 694 transitions. Word has length 14 [2020-10-09 10:44:50,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:44:50,038 INFO L481 AbstractCegarLoop]: Abstraction has 264 states and 694 transitions. [2020-10-09 10:44:50,038 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:44:50,039 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 694 transitions. [2020-10-09 10:44:50,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:44:50,039 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:44:50,039 INFO L421 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:44:50,239 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 243 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable249 [2020-10-09 10:44:50,240 INFO L429 AbstractCegarLoop]: === Iteration 251 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:44:50,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:44:50,240 INFO L82 PathProgramCache]: Analyzing trace with hash 972734142, now seen corresponding path program 222 times [2020-10-09 10:44:50,240 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:44:50,241 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757831162] [2020-10-09 10:44:50,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:44:50,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:44:50,394 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:44:50,394 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757831162] [2020-10-09 10:44:50,394 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [330570152] [2020-10-09 10:44:50,394 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 244 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 244 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:44:50,434 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-09 10:44:50,434 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:44:50,435 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:44:50,436 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:44:50,840 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:44:50,840 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:44:50,840 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:44:50,841 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302198295] [2020-10-09 10:44:50,841 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:44:50,841 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:44:50,841 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:44:50,841 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:44:50,841 INFO L87 Difference]: Start difference. First operand 264 states and 694 transitions. Second operand 17 states. [2020-10-09 10:44:52,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:44:52,549 INFO L93 Difference]: Finished difference Result 380 states and 942 transitions. [2020-10-09 10:44:52,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-09 10:44:52,550 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-09 10:44:52,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:44:52,551 INFO L225 Difference]: With dead ends: 380 [2020-10-09 10:44:52,551 INFO L226 Difference]: Without dead ends: 375 [2020-10-09 10:44:52,551 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 356 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=397, Invalid=935, Unknown=0, NotChecked=0, Total=1332 [2020-10-09 10:44:52,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2020-10-09 10:44:52,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 268. [2020-10-09 10:44:52,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 268 states. [2020-10-09 10:44:52,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 708 transitions. [2020-10-09 10:44:52,555 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 708 transitions. Word has length 14 [2020-10-09 10:44:52,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:44:52,556 INFO L481 AbstractCegarLoop]: Abstraction has 268 states and 708 transitions. [2020-10-09 10:44:52,556 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:44:52,556 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 708 transitions. [2020-10-09 10:44:52,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:44:52,556 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:44:52,556 INFO L421 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:44:52,756 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable250,244 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:44:52,757 INFO L429 AbstractCegarLoop]: === Iteration 252 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:44:52,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:44:52,757 INFO L82 PathProgramCache]: Analyzing trace with hash 972755501, now seen corresponding path program 223 times [2020-10-09 10:44:52,758 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:44:52,758 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765276226] [2020-10-09 10:44:52,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:44:52,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:44:52,918 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:44:52,918 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765276226] [2020-10-09 10:44:52,918 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2072138139] [2020-10-09 10:44:52,919 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 245 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 245 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:44:52,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:44:52,964 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:44:52,964 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:44:53,210 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 10:44:53,277 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:44:53,278 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:44:53,278 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:44:53,278 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308054956] [2020-10-09 10:44:53,278 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:44:53,278 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:44:53,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:44:53,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:44:53,279 INFO L87 Difference]: Start difference. First operand 268 states and 708 transitions. Second operand 17 states. [2020-10-09 10:44:55,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:44:55,200 INFO L93 Difference]: Finished difference Result 376 states and 942 transitions. [2020-10-09 10:44:55,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-09 10:44:55,202 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-09 10:44:55,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:44:55,203 INFO L225 Difference]: With dead ends: 376 [2020-10-09 10:44:55,203 INFO L226 Difference]: Without dead ends: 367 [2020-10-09 10:44:55,203 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 531 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=528, Invalid=1278, Unknown=0, NotChecked=0, Total=1806 [2020-10-09 10:44:55,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2020-10-09 10:44:55,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 270. [2020-10-09 10:44:55,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 270 states. [2020-10-09 10:44:55,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 718 transitions. [2020-10-09 10:44:55,208 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 718 transitions. Word has length 14 [2020-10-09 10:44:55,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:44:55,208 INFO L481 AbstractCegarLoop]: Abstraction has 270 states and 718 transitions. [2020-10-09 10:44:55,208 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:44:55,208 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 718 transitions. [2020-10-09 10:44:55,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:44:55,208 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:44:55,208 INFO L421 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:44:55,409 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 245 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable251 [2020-10-09 10:44:55,409 INFO L429 AbstractCegarLoop]: === Iteration 253 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:44:55,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:44:55,410 INFO L82 PathProgramCache]: Analyzing trace with hash 972756462, now seen corresponding path program 224 times [2020-10-09 10:44:55,410 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:44:55,411 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306229482] [2020-10-09 10:44:55,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:44:55,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:44:55,577 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:44:55,578 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306229482] [2020-10-09 10:44:55,578 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1202381931] [2020-10-09 10:44:55,578 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 246 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 246 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:44:55,617 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-09 10:44:55,618 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:44:55,618 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:44:55,619 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:45:00,049 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 10:45:00,117 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:45:00,118 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:45:00,118 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:45:00,118 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987874918] [2020-10-09 10:45:00,118 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:45:00,118 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:45:00,118 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:45:00,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=190, Unknown=2, NotChecked=0, Total=272 [2020-10-09 10:45:00,118 INFO L87 Difference]: Start difference. First operand 270 states and 718 transitions. Second operand 17 states. [2020-10-09 10:45:04,925 WARN L193 SmtUtils]: Spent 4.11 s on a formula simplification. DAG size of input: 54 DAG size of output: 36 [2020-10-09 10:45:09,106 WARN L193 SmtUtils]: Spent 4.10 s on a formula simplification. DAG size of input: 47 DAG size of output: 37 [2020-10-09 10:45:13,401 WARN L193 SmtUtils]: Spent 4.11 s on a formula simplification. DAG size of input: 58 DAG size of output: 39 [2020-10-09 10:45:17,702 WARN L193 SmtUtils]: Spent 4.11 s on a formula simplification. DAG size of input: 51 DAG size of output: 40 [2020-10-09 10:45:19,803 WARN L193 SmtUtils]: Spent 2.04 s on a formula simplification that was a NOOP. DAG size: 32 [2020-10-09 10:45:24,502 WARN L193 SmtUtils]: Spent 4.09 s on a formula simplification. DAG size of input: 37 DAG size of output: 35 [2020-10-09 10:45:25,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:45:25,323 INFO L93 Difference]: Finished difference Result 424 states and 1059 transitions. [2020-10-09 10:45:25,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-09 10:45:25,324 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-09 10:45:25,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:45:25,325 INFO L225 Difference]: With dead ends: 424 [2020-10-09 10:45:25,325 INFO L226 Difference]: Without dead ends: 414 [2020-10-09 10:45:25,326 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 491 ImplicationChecksByTransitivity, 29.0s TimeCoverageRelationStatistics Valid=530, Invalid=1274, Unknown=2, NotChecked=0, Total=1806 [2020-10-09 10:45:25,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 414 states. [2020-10-09 10:45:25,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 414 to 264. [2020-10-09 10:45:25,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 264 states. [2020-10-09 10:45:25,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 700 transitions. [2020-10-09 10:45:25,330 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 700 transitions. Word has length 14 [2020-10-09 10:45:25,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:45:25,330 INFO L481 AbstractCegarLoop]: Abstraction has 264 states and 700 transitions. [2020-10-09 10:45:25,330 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:45:25,330 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 700 transitions. [2020-10-09 10:45:25,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:45:25,331 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:45:25,331 INFO L421 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:45:25,531 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable252,246 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:45:25,532 INFO L429 AbstractCegarLoop]: === Iteration 254 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:45:25,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:45:25,532 INFO L82 PathProgramCache]: Analyzing trace with hash 972785292, now seen corresponding path program 225 times [2020-10-09 10:45:25,533 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:45:25,533 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234024007] [2020-10-09 10:45:25,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:45:25,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:45:25,717 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:45:25,718 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234024007] [2020-10-09 10:45:25,718 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [769198651] [2020-10-09 10:45:25,718 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 247 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 247 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:45:25,757 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-09 10:45:25,757 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:45:25,758 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:45:25,758 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:45:26,063 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 10:45:26,100 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:45:26,100 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:45:26,100 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:45:26,100 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048210840] [2020-10-09 10:45:26,101 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:45:26,101 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:45:26,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:45:26,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:45:26,101 INFO L87 Difference]: Start difference. First operand 264 states and 700 transitions. Second operand 17 states. [2020-10-09 10:45:28,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:45:28,450 INFO L93 Difference]: Finished difference Result 424 states and 1057 transitions. [2020-10-09 10:45:28,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-09 10:45:28,452 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-09 10:45:28,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:45:28,453 INFO L225 Difference]: With dead ends: 424 [2020-10-09 10:45:28,453 INFO L226 Difference]: Without dead ends: 414 [2020-10-09 10:45:28,454 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 591 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=587, Invalid=1393, Unknown=0, NotChecked=0, Total=1980 [2020-10-09 10:45:28,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 414 states. [2020-10-09 10:45:28,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 414 to 263. [2020-10-09 10:45:28,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 263 states. [2020-10-09 10:45:28,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 696 transitions. [2020-10-09 10:45:28,458 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 696 transitions. Word has length 14 [2020-10-09 10:45:28,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:45:28,458 INFO L481 AbstractCegarLoop]: Abstraction has 263 states and 696 transitions. [2020-10-09 10:45:28,459 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:45:28,459 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 696 transitions. [2020-10-09 10:45:28,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:45:28,459 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:45:28,459 INFO L421 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:45:28,659 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable253,247 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:45:28,660 INFO L429 AbstractCegarLoop]: === Iteration 255 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:45:28,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:45:28,660 INFO L82 PathProgramCache]: Analyzing trace with hash 979221853, now seen corresponding path program 226 times [2020-10-09 10:45:28,661 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:45:28,661 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532116074] [2020-10-09 10:45:28,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:45:28,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:45:28,826 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:45:28,826 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532116074] [2020-10-09 10:45:28,826 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1449280717] [2020-10-09 10:45:28,826 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 248 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 248 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:45:28,870 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-09 10:45:28,871 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:45:28,871 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:45:28,872 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:45:29,149 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:45:29,150 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:45:29,150 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:45:29,150 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054331031] [2020-10-09 10:45:29,150 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:45:29,150 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:45:29,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:45:29,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=210, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:45:29,151 INFO L87 Difference]: Start difference. First operand 263 states and 696 transitions. Second operand 17 states. [2020-10-09 10:45:29,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:45:29,980 INFO L93 Difference]: Finished difference Result 374 states and 921 transitions. [2020-10-09 10:45:29,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-09 10:45:29,982 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-09 10:45:29,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:45:29,983 INFO L225 Difference]: With dead ends: 374 [2020-10-09 10:45:29,983 INFO L226 Difference]: Without dead ends: 360 [2020-10-09 10:45:29,984 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 212 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=259, Invalid=671, Unknown=0, NotChecked=0, Total=930 [2020-10-09 10:45:29,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2020-10-09 10:45:29,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 263. [2020-10-09 10:45:29,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 263 states. [2020-10-09 10:45:29,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 696 transitions. [2020-10-09 10:45:29,993 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 696 transitions. Word has length 14 [2020-10-09 10:45:29,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:45:29,993 INFO L481 AbstractCegarLoop]: Abstraction has 263 states and 696 transitions. [2020-10-09 10:45:29,993 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:45:29,993 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 696 transitions. [2020-10-09 10:45:29,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:45:29,994 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:45:29,994 INFO L421 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:45:30,198 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable254,248 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:45:30,199 INFO L429 AbstractCegarLoop]: === Iteration 256 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:45:30,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:45:30,199 INFO L82 PathProgramCache]: Analyzing trace with hash 999776682, now seen corresponding path program 227 times [2020-10-09 10:45:30,200 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:45:30,200 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571659349] [2020-10-09 10:45:30,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:45:30,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:45:30,366 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:45:30,366 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571659349] [2020-10-09 10:45:30,367 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [345237524] [2020-10-09 10:45:30,367 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 249 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 249 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:45:30,406 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-09 10:45:30,406 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:45:30,407 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:45:30,407 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:45:30,704 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:45:30,704 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:45:30,704 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:45:30,705 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443891595] [2020-10-09 10:45:30,705 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:45:30,705 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:45:30,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:45:30,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:45:30,706 INFO L87 Difference]: Start difference. First operand 263 states and 696 transitions. Second operand 17 states. [2020-10-09 10:45:32,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:45:32,027 INFO L93 Difference]: Finished difference Result 399 states and 977 transitions. [2020-10-09 10:45:32,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-09 10:45:32,030 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-09 10:45:32,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:45:32,031 INFO L225 Difference]: With dead ends: 399 [2020-10-09 10:45:32,031 INFO L226 Difference]: Without dead ends: 394 [2020-10-09 10:45:32,032 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 352 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=389, Invalid=943, Unknown=0, NotChecked=0, Total=1332 [2020-10-09 10:45:32,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2020-10-09 10:45:32,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 256. [2020-10-09 10:45:32,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 256 states. [2020-10-09 10:45:32,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 681 transitions. [2020-10-09 10:45:32,037 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 681 transitions. Word has length 14 [2020-10-09 10:45:32,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:45:32,037 INFO L481 AbstractCegarLoop]: Abstraction has 256 states and 681 transitions. [2020-10-09 10:45:32,037 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:45:32,037 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 681 transitions. [2020-10-09 10:45:32,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:45:32,038 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:45:32,038 INFO L421 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:45:32,241 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 249 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable255 [2020-10-09 10:45:32,242 INFO L429 AbstractCegarLoop]: === Iteration 257 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:45:32,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:45:32,242 INFO L82 PathProgramCache]: Analyzing trace with hash 999777643, now seen corresponding path program 228 times [2020-10-09 10:45:32,243 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:45:32,243 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356353063] [2020-10-09 10:45:32,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:45:32,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:45:32,425 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:45:32,425 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356353063] [2020-10-09 10:45:32,425 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1155230198] [2020-10-09 10:45:32,425 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 250 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 250 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:45:32,464 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-09 10:45:32,464 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:45:32,465 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:45:32,466 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:45:32,749 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:45:32,749 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:45:32,750 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:45:32,750 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311102195] [2020-10-09 10:45:32,750 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:45:32,750 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:45:32,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:45:32,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:45:32,751 INFO L87 Difference]: Start difference. First operand 256 states and 681 transitions. Second operand 17 states. [2020-10-09 10:45:33,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:45:33,839 INFO L93 Difference]: Finished difference Result 396 states and 966 transitions. [2020-10-09 10:45:33,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-09 10:45:33,841 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-09 10:45:33,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:45:33,842 INFO L225 Difference]: With dead ends: 396 [2020-10-09 10:45:33,842 INFO L226 Difference]: Without dead ends: 382 [2020-10-09 10:45:33,842 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 267 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=316, Invalid=806, Unknown=0, NotChecked=0, Total=1122 [2020-10-09 10:45:33,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2020-10-09 10:45:33,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 254. [2020-10-09 10:45:33,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 254 states. [2020-10-09 10:45:33,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 675 transitions. [2020-10-09 10:45:33,846 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 675 transitions. Word has length 14 [2020-10-09 10:45:33,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:45:33,847 INFO L481 AbstractCegarLoop]: Abstraction has 254 states and 675 transitions. [2020-10-09 10:45:33,847 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:45:33,847 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 675 transitions. [2020-10-09 10:45:33,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:45:33,847 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:45:33,847 INFO L421 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:45:34,048 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 250 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable256 [2020-10-09 10:45:34,049 INFO L429 AbstractCegarLoop]: === Iteration 258 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:45:34,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:45:34,049 INFO L82 PathProgramCache]: Analyzing trace with hash 1000439772, now seen corresponding path program 229 times [2020-10-09 10:45:34,049 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:45:34,050 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881325259] [2020-10-09 10:45:34,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:45:34,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:45:34,227 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:45:34,227 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881325259] [2020-10-09 10:45:34,228 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1989931780] [2020-10-09 10:45:34,228 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 251 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 251 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:45:34,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:45:34,265 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:45:34,266 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:45:34,550 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:45:34,551 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:45:34,551 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:45:34,551 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807316974] [2020-10-09 10:45:34,552 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:45:34,552 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:45:34,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:45:34,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:45:34,552 INFO L87 Difference]: Start difference. First operand 254 states and 675 transitions. Second operand 17 states. [2020-10-09 10:45:35,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:45:35,958 INFO L93 Difference]: Finished difference Result 380 states and 942 transitions. [2020-10-09 10:45:35,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-09 10:45:35,960 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-09 10:45:35,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:45:35,960 INFO L225 Difference]: With dead ends: 380 [2020-10-09 10:45:35,960 INFO L226 Difference]: Without dead ends: 375 [2020-10-09 10:45:35,961 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 391 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=407, Invalid=999, Unknown=0, NotChecked=0, Total=1406 [2020-10-09 10:45:35,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2020-10-09 10:45:35,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 256. [2020-10-09 10:45:35,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 256 states. [2020-10-09 10:45:35,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 681 transitions. [2020-10-09 10:45:35,965 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 681 transitions. Word has length 14 [2020-10-09 10:45:35,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:45:35,966 INFO L481 AbstractCegarLoop]: Abstraction has 256 states and 681 transitions. [2020-10-09 10:45:35,966 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:45:35,966 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 681 transitions. [2020-10-09 10:45:35,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:45:35,966 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:45:35,966 INFO L421 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:45:36,166 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 251 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable257 [2020-10-09 10:45:36,167 INFO L429 AbstractCegarLoop]: === Iteration 259 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:45:36,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:45:36,167 INFO L82 PathProgramCache]: Analyzing trace with hash 1000461131, now seen corresponding path program 230 times [2020-10-09 10:45:36,168 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:45:36,168 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098688895] [2020-10-09 10:45:36,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:45:36,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:45:36,340 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:45:36,341 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098688895] [2020-10-09 10:45:36,341 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2062321690] [2020-10-09 10:45:36,341 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 252 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 252 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:45:36,379 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-09 10:45:36,379 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:45:36,380 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:45:36,381 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:45:36,614 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 10:45:36,634 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:45:36,635 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:45:36,635 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:45:36,635 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221572833] [2020-10-09 10:45:36,635 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:45:36,635 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:45:36,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:45:36,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:45:36,635 INFO L87 Difference]: Start difference. First operand 256 states and 681 transitions. Second operand 17 states. [2020-10-09 10:45:37,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:45:37,941 INFO L93 Difference]: Finished difference Result 352 states and 887 transitions. [2020-10-09 10:45:37,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-09 10:45:37,943 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-09 10:45:37,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:45:37,943 INFO L225 Difference]: With dead ends: 352 [2020-10-09 10:45:37,944 INFO L226 Difference]: Without dead ends: 342 [2020-10-09 10:45:37,944 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 495 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=482, Invalid=1240, Unknown=0, NotChecked=0, Total=1722 [2020-10-09 10:45:37,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2020-10-09 10:45:37,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 253. [2020-10-09 10:45:37,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 253 states. [2020-10-09 10:45:37,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 667 transitions. [2020-10-09 10:45:37,948 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 667 transitions. Word has length 14 [2020-10-09 10:45:37,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:45:37,948 INFO L481 AbstractCegarLoop]: Abstraction has 253 states and 667 transitions. [2020-10-09 10:45:37,948 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:45:37,948 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 667 transitions. [2020-10-09 10:45:37,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:45:37,949 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:45:37,949 INFO L421 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:45:38,152 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 252 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable258 [2020-10-09 10:45:38,153 INFO L429 AbstractCegarLoop]: === Iteration 260 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:45:38,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:45:38,153 INFO L82 PathProgramCache]: Analyzing trace with hash 1000462092, now seen corresponding path program 231 times [2020-10-09 10:45:38,153 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:45:38,153 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335025997] [2020-10-09 10:45:38,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:45:38,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:45:38,346 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:45:38,346 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335025997] [2020-10-09 10:45:38,347 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [323523007] [2020-10-09 10:45:38,347 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 253 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 253 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:45:38,389 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-09 10:45:38,389 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:45:38,390 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:45:38,391 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:45:38,645 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-09 10:45:38,713 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:45:38,714 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:45:38,714 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:45:38,714 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578916637] [2020-10-09 10:45:38,714 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:45:38,714 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:45:38,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:45:38,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:45:38,715 INFO L87 Difference]: Start difference. First operand 253 states and 667 transitions. Second operand 17 states. [2020-10-09 10:45:40,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:45:40,408 INFO L93 Difference]: Finished difference Result 421 states and 1043 transitions. [2020-10-09 10:45:40,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-09 10:45:40,410 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-09 10:45:40,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:45:40,410 INFO L225 Difference]: With dead ends: 421 [2020-10-09 10:45:40,410 INFO L226 Difference]: Without dead ends: 410 [2020-10-09 10:45:40,411 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 443 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=480, Invalid=1160, Unknown=0, NotChecked=0, Total=1640 [2020-10-09 10:45:40,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2020-10-09 10:45:40,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 249. [2020-10-09 10:45:40,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 249 states. [2020-10-09 10:45:40,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 653 transitions. [2020-10-09 10:45:40,414 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 653 transitions. Word has length 14 [2020-10-09 10:45:40,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:45:40,414 INFO L481 AbstractCegarLoop]: Abstraction has 249 states and 653 transitions. [2020-10-09 10:45:40,414 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:45:40,414 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 653 transitions. [2020-10-09 10:45:40,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:45:40,415 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:45:40,415 INFO L421 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:45:40,615 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 253 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable259 [2020-10-09 10:45:40,616 INFO L429 AbstractCegarLoop]: === Iteration 261 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:45:40,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:45:40,616 INFO L82 PathProgramCache]: Analyzing trace with hash 1000469563, now seen corresponding path program 232 times [2020-10-09 10:45:40,616 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:45:40,617 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188285607] [2020-10-09 10:45:40,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:45:40,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:45:40,785 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:45:40,785 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188285607] [2020-10-09 10:45:40,786 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [164042721] [2020-10-09 10:45:40,786 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 254 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 254 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:45:40,826 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-09 10:45:40,827 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:45:40,827 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:45:40,828 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:45:41,104 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:45:41,104 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:45:41,104 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:45:41,104 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669958119] [2020-10-09 10:45:41,105 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:45:41,105 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:45:41,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:45:41,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:45:41,105 INFO L87 Difference]: Start difference. First operand 249 states and 653 transitions. Second operand 17 states. [2020-10-09 10:45:42,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:45:42,371 INFO L93 Difference]: Finished difference Result 402 states and 976 transitions. [2020-10-09 10:45:42,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-09 10:45:42,373 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-09 10:45:42,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:45:42,374 INFO L225 Difference]: With dead ends: 402 [2020-10-09 10:45:42,374 INFO L226 Difference]: Without dead ends: 389 [2020-10-09 10:45:42,374 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 357 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=412, Invalid=994, Unknown=0, NotChecked=0, Total=1406 [2020-10-09 10:45:42,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2020-10-09 10:45:42,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 251. [2020-10-09 10:45:42,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 251 states. [2020-10-09 10:45:42,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 658 transitions. [2020-10-09 10:45:42,378 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 658 transitions. Word has length 14 [2020-10-09 10:45:42,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:45:42,378 INFO L481 AbstractCegarLoop]: Abstraction has 251 states and 658 transitions. [2020-10-09 10:45:42,378 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:45:42,379 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 658 transitions. [2020-10-09 10:45:42,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:45:42,379 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:45:42,379 INFO L421 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:45:42,579 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable260,254 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:45:42,580 INFO L429 AbstractCegarLoop]: === Iteration 262 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:45:42,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:45:42,580 INFO L82 PathProgramCache]: Analyzing trace with hash 1000490922, now seen corresponding path program 233 times [2020-10-09 10:45:42,580 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:45:42,581 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437184801] [2020-10-09 10:45:42,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:45:42,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:45:42,761 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:45:42,761 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437184801] [2020-10-09 10:45:42,762 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1165468570] [2020-10-09 10:45:42,762 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 255 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 255 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:45:42,802 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-09 10:45:42,802 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:45:42,803 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:45:42,803 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:45:43,042 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 10:45:43,062 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:45:43,063 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:45:43,063 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:45:43,063 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340747078] [2020-10-09 10:45:43,064 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:45:43,064 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:45:43,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:45:43,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=189, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:45:43,065 INFO L87 Difference]: Start difference. First operand 251 states and 658 transitions. Second operand 17 states. [2020-10-09 10:45:44,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:45:44,563 INFO L93 Difference]: Finished difference Result 422 states and 1042 transitions. [2020-10-09 10:45:44,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-09 10:45:44,564 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-09 10:45:44,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:45:44,565 INFO L225 Difference]: With dead ends: 422 [2020-10-09 10:45:44,565 INFO L226 Difference]: Without dead ends: 411 [2020-10-09 10:45:44,566 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 452 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=483, Invalid=1157, Unknown=0, NotChecked=0, Total=1640 [2020-10-09 10:45:44,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 411 states. [2020-10-09 10:45:44,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 411 to 249. [2020-10-09 10:45:44,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 249 states. [2020-10-09 10:45:44,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 648 transitions. [2020-10-09 10:45:44,570 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 648 transitions. Word has length 14 [2020-10-09 10:45:44,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:45:44,570 INFO L481 AbstractCegarLoop]: Abstraction has 249 states and 648 transitions. [2020-10-09 10:45:44,570 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:45:44,570 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 648 transitions. [2020-10-09 10:45:44,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:45:44,571 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:45:44,571 INFO L421 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:45:44,771 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable261,255 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:45:44,771 INFO L429 AbstractCegarLoop]: === Iteration 263 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:45:44,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:45:44,772 INFO L82 PathProgramCache]: Analyzing trace with hash 1000491883, now seen corresponding path program 234 times [2020-10-09 10:45:44,772 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:45:44,772 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183117403] [2020-10-09 10:45:44,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:45:44,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:45:44,957 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:45:44,958 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183117403] [2020-10-09 10:45:44,958 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [621000460] [2020-10-09 10:45:44,958 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 256 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 256 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:45:45,005 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-09 10:45:45,005 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:45:45,006 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:45:45,006 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:45:45,257 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-09 10:45:45,281 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:45:45,281 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:45:45,281 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:45:45,282 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329718831] [2020-10-09 10:45:45,282 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:45:45,282 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:45:45,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:45:45,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:45:45,282 INFO L87 Difference]: Start difference. First operand 249 states and 648 transitions. Second operand 17 states. [2020-10-09 10:45:46,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:45:46,979 INFO L93 Difference]: Finished difference Result 424 states and 1036 transitions. [2020-10-09 10:45:46,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-09 10:45:46,981 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-09 10:45:46,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:45:46,982 INFO L225 Difference]: With dead ends: 424 [2020-10-09 10:45:46,982 INFO L226 Difference]: Without dead ends: 396 [2020-10-09 10:45:46,982 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 539 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=559, Invalid=1333, Unknown=0, NotChecked=0, Total=1892 [2020-10-09 10:45:46,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396 states. [2020-10-09 10:45:46,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396 to 238. [2020-10-09 10:45:46,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 238 states. [2020-10-09 10:45:46,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 612 transitions. [2020-10-09 10:45:46,987 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 612 transitions. Word has length 14 [2020-10-09 10:45:46,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:45:46,987 INFO L481 AbstractCegarLoop]: Abstraction has 238 states and 612 transitions. [2020-10-09 10:45:46,987 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:45:46,987 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 612 transitions. [2020-10-09 10:45:46,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:45:46,987 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:45:46,987 INFO L421 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:45:47,188 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable262,256 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:45:47,188 INFO L429 AbstractCegarLoop]: === Iteration 264 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:45:47,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:45:47,189 INFO L82 PathProgramCache]: Analyzing trace with hash 1001384652, now seen corresponding path program 235 times [2020-10-09 10:45:47,189 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:45:47,189 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375324326] [2020-10-09 10:45:47,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:45:47,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:45:47,366 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:45:47,366 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375324326] [2020-10-09 10:45:47,366 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1631136412] [2020-10-09 10:45:47,366 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 257 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 257 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:45:47,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:45:47,408 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:45:47,409 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:45:47,675 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 10:45:47,699 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:45:47,699 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:45:47,700 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:45:47,700 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685696773] [2020-10-09 10:45:47,700 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:45:47,700 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:45:47,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:45:47,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:45:47,701 INFO L87 Difference]: Start difference. First operand 238 states and 612 transitions. Second operand 17 states. [2020-10-09 10:45:49,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:45:49,653 INFO L93 Difference]: Finished difference Result 369 states and 896 transitions. [2020-10-09 10:45:49,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-09 10:45:49,654 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-09 10:45:49,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:45:49,655 INFO L225 Difference]: With dead ends: 369 [2020-10-09 10:45:49,655 INFO L226 Difference]: Without dead ends: 359 [2020-10-09 10:45:49,655 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 556 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=543, Invalid=1349, Unknown=0, NotChecked=0, Total=1892 [2020-10-09 10:45:49,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2020-10-09 10:45:49,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 228. [2020-10-09 10:45:49,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 228 states. [2020-10-09 10:45:49,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 568 transitions. [2020-10-09 10:45:49,658 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 568 transitions. Word has length 14 [2020-10-09 10:45:49,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:45:49,659 INFO L481 AbstractCegarLoop]: Abstraction has 228 states and 568 transitions. [2020-10-09 10:45:49,659 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:45:49,659 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 568 transitions. [2020-10-09 10:45:49,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:45:49,659 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:45:49,659 INFO L421 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:45:49,862 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 257 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable263 [2020-10-09 10:45:49,862 INFO L429 AbstractCegarLoop]: === Iteration 265 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:45:49,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:45:49,863 INFO L82 PathProgramCache]: Analyzing trace with hash 1866754364, now seen corresponding path program 236 times [2020-10-09 10:45:49,863 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:45:49,863 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198043372] [2020-10-09 10:45:49,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:45:49,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:45:50,064 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:45:50,064 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198043372] [2020-10-09 10:45:50,064 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [203451439] [2020-10-09 10:45:50,064 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 258 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 258 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:45:50,111 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-09 10:45:50,112 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:45:50,113 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:45:50,113 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:45:50,416 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:45:50,416 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:45:50,416 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:45:50,417 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802117041] [2020-10-09 10:45:50,417 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:45:50,417 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:45:50,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:45:50,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:45:50,418 INFO L87 Difference]: Start difference. First operand 228 states and 568 transitions. Second operand 17 states. [2020-10-09 10:45:50,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:45:50,937 INFO L93 Difference]: Finished difference Result 304 states and 714 transitions. [2020-10-09 10:45:50,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-09 10:45:50,940 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-09 10:45:50,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:45:50,940 INFO L225 Difference]: With dead ends: 304 [2020-10-09 10:45:50,941 INFO L226 Difference]: Without dead ends: 291 [2020-10-09 10:45:50,941 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=169, Invalid=383, Unknown=0, NotChecked=0, Total=552 [2020-10-09 10:45:50,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2020-10-09 10:45:50,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 226. [2020-10-09 10:45:50,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2020-10-09 10:45:50,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 564 transitions. [2020-10-09 10:45:50,944 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 564 transitions. Word has length 14 [2020-10-09 10:45:50,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:45:50,944 INFO L481 AbstractCegarLoop]: Abstraction has 226 states and 564 transitions. [2020-10-09 10:45:50,944 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:45:50,945 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 564 transitions. [2020-10-09 10:45:50,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:45:50,945 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:45:50,945 INFO L421 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:45:51,146 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable264,258 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:45:51,147 INFO L429 AbstractCegarLoop]: === Iteration 266 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:45:51,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:45:51,147 INFO L82 PathProgramCache]: Analyzing trace with hash 1888203884, now seen corresponding path program 237 times [2020-10-09 10:45:51,148 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:45:51,148 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123002907] [2020-10-09 10:45:51,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:45:51,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:45:51,340 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:45:51,340 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123002907] [2020-10-09 10:45:51,341 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1626666121] [2020-10-09 10:45:51,341 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 259 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 259 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:45:51,381 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-09 10:45:51,381 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:45:51,382 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:45:51,383 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:45:51,693 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:45:51,694 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:45:51,694 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:45:51,694 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634371238] [2020-10-09 10:45:51,694 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:45:51,694 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:45:51,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:45:51,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:45:51,695 INFO L87 Difference]: Start difference. First operand 226 states and 564 transitions. Second operand 17 states. [2020-10-09 10:45:52,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:45:52,272 INFO L93 Difference]: Finished difference Result 300 states and 708 transitions. [2020-10-09 10:45:52,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-09 10:45:52,274 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-09 10:45:52,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:45:52,274 INFO L225 Difference]: With dead ends: 300 [2020-10-09 10:45:52,274 INFO L226 Difference]: Without dead ends: 287 [2020-10-09 10:45:52,275 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=189, Invalid=411, Unknown=0, NotChecked=0, Total=600 [2020-10-09 10:45:52,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2020-10-09 10:45:52,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 224. [2020-10-09 10:45:52,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 224 states. [2020-10-09 10:45:52,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 562 transitions. [2020-10-09 10:45:52,278 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 562 transitions. Word has length 14 [2020-10-09 10:45:52,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:45:52,279 INFO L481 AbstractCegarLoop]: Abstraction has 224 states and 562 transitions. [2020-10-09 10:45:52,279 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:45:52,279 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 562 transitions. [2020-10-09 10:45:52,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:45:52,279 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:45:52,279 INFO L421 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:45:52,479 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 259 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable265 [2020-10-09 10:45:52,480 INFO L429 AbstractCegarLoop]: === Iteration 267 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:45:52,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:45:52,480 INFO L82 PathProgramCache]: Analyzing trace with hash 1888866974, now seen corresponding path program 238 times [2020-10-09 10:45:52,481 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:45:52,481 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765249233] [2020-10-09 10:45:52,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:45:52,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:45:52,645 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:45:52,645 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765249233] [2020-10-09 10:45:52,645 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1512099177] [2020-10-09 10:45:52,646 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 260 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 260 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:45:52,684 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-09 10:45:52,685 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:45:52,685 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:45:52,686 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:45:53,028 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:45:53,028 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:45:53,028 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:45:53,029 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494787531] [2020-10-09 10:45:53,029 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:45:53,029 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:45:53,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:45:53,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:45:53,030 INFO L87 Difference]: Start difference. First operand 224 states and 562 transitions. Second operand 17 states. [2020-10-09 10:45:53,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:45:53,694 INFO L93 Difference]: Finished difference Result 294 states and 701 transitions. [2020-10-09 10:45:53,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-09 10:45:53,696 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-09 10:45:53,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:45:53,697 INFO L225 Difference]: With dead ends: 294 [2020-10-09 10:45:53,697 INFO L226 Difference]: Without dead ends: 281 [2020-10-09 10:45:53,697 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=207, Invalid=443, Unknown=0, NotChecked=0, Total=650 [2020-10-09 10:45:53,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2020-10-09 10:45:53,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 224. [2020-10-09 10:45:53,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 224 states. [2020-10-09 10:45:53,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 560 transitions. [2020-10-09 10:45:53,700 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 560 transitions. Word has length 14 [2020-10-09 10:45:53,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:45:53,701 INFO L481 AbstractCegarLoop]: Abstraction has 224 states and 560 transitions. [2020-10-09 10:45:53,701 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:45:53,701 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 560 transitions. [2020-10-09 10:45:53,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:45:53,701 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:45:53,701 INFO L421 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:45:53,901 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable266,260 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:45:53,902 INFO L429 AbstractCegarLoop]: === Iteration 268 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:45:53,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:45:53,902 INFO L82 PathProgramCache]: Analyzing trace with hash 1888889294, now seen corresponding path program 239 times [2020-10-09 10:45:53,903 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:45:53,903 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131239344] [2020-10-09 10:45:53,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:45:53,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:45:54,077 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:45:54,078 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131239344] [2020-10-09 10:45:54,078 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [928956605] [2020-10-09 10:45:54,078 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 261 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 261 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:45:54,118 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-09 10:45:54,119 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:45:54,120 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:45:54,120 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:45:54,444 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-09 10:45:56,416 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:45:56,417 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:45:56,417 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 16 [2020-10-09 10:45:56,417 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667982580] [2020-10-09 10:45:56,417 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-09 10:45:56,417 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:45:56,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-09 10:45:56,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=213, Unknown=1, NotChecked=0, Total=306 [2020-10-09 10:45:56,418 INFO L87 Difference]: Start difference. First operand 224 states and 560 transitions. Second operand 18 states. [2020-10-09 10:45:59,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:45:59,590 INFO L93 Difference]: Finished difference Result 303 states and 720 transitions. [2020-10-09 10:45:59,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-09 10:45:59,592 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 14 [2020-10-09 10:45:59,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:45:59,592 INFO L225 Difference]: With dead ends: 303 [2020-10-09 10:45:59,592 INFO L226 Difference]: Without dead ends: 286 [2020-10-09 10:45:59,593 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=307, Invalid=622, Unknown=1, NotChecked=0, Total=930 [2020-10-09 10:45:59,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2020-10-09 10:45:59,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 222. [2020-10-09 10:45:59,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 222 states. [2020-10-09 10:45:59,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 554 transitions. [2020-10-09 10:45:59,596 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 554 transitions. Word has length 14 [2020-10-09 10:45:59,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:45:59,596 INFO L481 AbstractCegarLoop]: Abstraction has 222 states and 554 transitions. [2020-10-09 10:45:59,596 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-09 10:45:59,596 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 554 transitions. [2020-10-09 10:45:59,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 10:45:59,596 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:45:59,596 INFO L421 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:45:59,798 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 261 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable267 [2020-10-09 10:45:59,799 INFO L429 AbstractCegarLoop]: === Iteration 269 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:45:59,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:45:59,799 INFO L82 PathProgramCache]: Analyzing trace with hash 1888918124, now seen corresponding path program 240 times [2020-10-09 10:45:59,799 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:45:59,800 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269329653] [2020-10-09 10:45:59,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:45:59,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:45:59,976 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:45:59,976 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269329653] [2020-10-09 10:45:59,976 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1749878111] [2020-10-09 10:45:59,976 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 262 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 262 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:46:00,013 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-09 10:46:00,013 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:46:00,014 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-09 10:46:00,014 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:46:00,291 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 10:46:00,316 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:46:00,317 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:46:00,317 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-09 10:46:00,317 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995512167] [2020-10-09 10:46:00,317 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-09 10:46:00,317 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:46:00,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-09 10:46:00,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2020-10-09 10:46:00,318 INFO L87 Difference]: Start difference. First operand 222 states and 554 transitions. Second operand 17 states. [2020-10-09 10:46:01,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:46:01,046 INFO L93 Difference]: Finished difference Result 287 states and 679 transitions. [2020-10-09 10:46:01,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-09 10:46:01,048 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-09 10:46:01,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:46:01,049 INFO L225 Difference]: With dead ends: 287 [2020-10-09 10:46:01,049 INFO L226 Difference]: Without dead ends: 271 [2020-10-09 10:46:01,049 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=250, Invalid=506, Unknown=0, NotChecked=0, Total=756 [2020-10-09 10:46:01,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2020-10-09 10:46:01,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 216. [2020-10-09 10:46:01,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2020-10-09 10:46:01,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 535 transitions. [2020-10-09 10:46:01,052 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 535 transitions. Word has length 14 [2020-10-09 10:46:01,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:46:01,052 INFO L481 AbstractCegarLoop]: Abstraction has 216 states and 535 transitions. [2020-10-09 10:46:01,052 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-09 10:46:01,052 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 535 transitions. [2020-10-09 10:46:01,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-09 10:46:01,052 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:46:01,053 INFO L421 BasicCegarLoop]: trace histogram [5, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:46:01,253 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable268,262 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:46:01,253 INFO L429 AbstractCegarLoop]: === Iteration 270 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:46:01,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:46:01,254 INFO L82 PathProgramCache]: Analyzing trace with hash 491278210, now seen corresponding path program 241 times [2020-10-09 10:46:01,254 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:46:01,254 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145187829] [2020-10-09 10:46:01,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:46:01,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:46:01,495 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:46:01,495 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145187829] [2020-10-09 10:46:01,495 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [426535428] [2020-10-09 10:46:01,495 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 263 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 263 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:46:01,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:46:01,542 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-09 10:46:01,542 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:46:01,949 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:46:01,949 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:46:01,949 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-09 10:46:01,949 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409061313] [2020-10-09 10:46:01,950 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-09 10:46:01,950 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:46:01,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-09 10:46:01,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=240, Unknown=0, NotChecked=0, Total=342 [2020-10-09 10:46:01,950 INFO L87 Difference]: Start difference. First operand 216 states and 535 transitions. Second operand 19 states. [2020-10-09 10:46:02,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:46:02,360 INFO L93 Difference]: Finished difference Result 268 states and 633 transitions. [2020-10-09 10:46:02,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-09 10:46:02,362 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 15 [2020-10-09 10:46:02,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:46:02,362 INFO L225 Difference]: With dead ends: 268 [2020-10-09 10:46:02,362 INFO L226 Difference]: Without dead ends: 266 [2020-10-09 10:46:02,362 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=172, Invalid=380, Unknown=0, NotChecked=0, Total=552 [2020-10-09 10:46:02,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2020-10-09 10:46:02,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 227. [2020-10-09 10:46:02,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 227 states. [2020-10-09 10:46:02,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 563 transitions. [2020-10-09 10:46:02,366 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 563 transitions. Word has length 15 [2020-10-09 10:46:02,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:46:02,367 INFO L481 AbstractCegarLoop]: Abstraction has 227 states and 563 transitions. [2020-10-09 10:46:02,367 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-09 10:46:02,367 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 563 transitions. [2020-10-09 10:46:02,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-09 10:46:02,367 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:46:02,367 INFO L421 BasicCegarLoop]: trace histogram [5, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:46:02,567 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 263 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable269 [2020-10-09 10:46:02,568 INFO L429 AbstractCegarLoop]: === Iteration 271 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:46:02,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:46:02,568 INFO L82 PathProgramCache]: Analyzing trace with hash 491307040, now seen corresponding path program 242 times [2020-10-09 10:46:02,569 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:46:02,569 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144579314] [2020-10-09 10:46:02,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:46:02,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:46:02,817 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:46:02,818 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144579314] [2020-10-09 10:46:02,818 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1920545655] [2020-10-09 10:46:02,818 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 264 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 264 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:46:02,858 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-09 10:46:02,858 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:46:02,858 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-09 10:46:02,859 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:46:03,381 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:46:03,382 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:46:03,382 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-09 10:46:03,382 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945784553] [2020-10-09 10:46:03,382 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-09 10:46:03,382 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:46:03,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-09 10:46:03,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=233, Unknown=0, NotChecked=0, Total=342 [2020-10-09 10:46:03,383 INFO L87 Difference]: Start difference. First operand 227 states and 563 transitions. Second operand 19 states. [2020-10-09 10:46:04,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:46:04,031 INFO L93 Difference]: Finished difference Result 295 states and 691 transitions. [2020-10-09 10:46:04,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-09 10:46:04,034 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 15 [2020-10-09 10:46:04,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:46:04,035 INFO L225 Difference]: With dead ends: 295 [2020-10-09 10:46:04,035 INFO L226 Difference]: Without dead ends: 292 [2020-10-09 10:46:04,035 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=221, Invalid=429, Unknown=0, NotChecked=0, Total=650 [2020-10-09 10:46:04,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2020-10-09 10:46:04,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 229. [2020-10-09 10:46:04,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 229 states. [2020-10-09 10:46:04,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 569 transitions. [2020-10-09 10:46:04,039 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 569 transitions. Word has length 15 [2020-10-09 10:46:04,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:46:04,039 INFO L481 AbstractCegarLoop]: Abstraction has 229 states and 569 transitions. [2020-10-09 10:46:04,039 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-09 10:46:04,039 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 569 transitions. [2020-10-09 10:46:04,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-09 10:46:04,039 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:46:04,039 INFO L421 BasicCegarLoop]: trace histogram [5, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:46:04,240 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 264 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable270 [2020-10-09 10:46:04,240 INFO L429 AbstractCegarLoop]: === Iteration 272 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:46:04,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:46:04,240 INFO L82 PathProgramCache]: Analyzing trace with hash 492200770, now seen corresponding path program 243 times [2020-10-09 10:46:04,241 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:46:04,241 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38916997] [2020-10-09 10:46:04,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:46:04,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:46:04,482 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:46:04,482 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38916997] [2020-10-09 10:46:04,482 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [234664566] [2020-10-09 10:46:04,482 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 265 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 265 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:46:04,528 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-09 10:46:04,529 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:46:04,530 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-09 10:46:04,530 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:46:11,160 WARN L193 SmtUtils]: Spent 2.02 s on a formula simplification that was a NOOP. DAG size: 32 [2020-10-09 10:46:11,162 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:46:11,163 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:46:11,163 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2020-10-09 10:46:11,163 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729118836] [2020-10-09 10:46:11,163 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-09 10:46:11,163 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:46:11,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-09 10:46:11,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=254, Unknown=2, NotChecked=0, Total=380 [2020-10-09 10:46:11,164 INFO L87 Difference]: Start difference. First operand 229 states and 569 transitions. Second operand 20 states. [2020-10-09 10:46:12,854 WARN L193 SmtUtils]: Spent 1.23 s on a formula simplification that was a NOOP. DAG size: 35 [2020-10-09 10:46:25,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:46:25,388 INFO L93 Difference]: Finished difference Result 304 states and 706 transitions. [2020-10-09 10:46:25,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-09 10:46:25,390 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 15 [2020-10-09 10:46:25,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:46:25,391 INFO L225 Difference]: With dead ends: 304 [2020-10-09 10:46:25,391 INFO L226 Difference]: Without dead ends: 302 [2020-10-09 10:46:25,391 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 8.6s TimeCoverageRelationStatistics Valid=266, Invalid=488, Unknown=2, NotChecked=0, Total=756 [2020-10-09 10:46:25,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2020-10-09 10:46:25,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 231. [2020-10-09 10:46:25,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 231 states. [2020-10-09 10:46:25,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 575 transitions. [2020-10-09 10:46:25,395 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 575 transitions. Word has length 15 [2020-10-09 10:46:25,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:46:25,395 INFO L481 AbstractCegarLoop]: Abstraction has 231 states and 575 transitions. [2020-10-09 10:46:25,395 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-09 10:46:25,395 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 575 transitions. [2020-10-09 10:46:25,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-09 10:46:25,396 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:46:25,396 INFO L421 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:46:25,596 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable271,265 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:46:25,597 INFO L429 AbstractCegarLoop]: === Iteration 273 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:46:25,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:46:25,597 INFO L82 PathProgramCache]: Analyzing trace with hash 492201731, now seen corresponding path program 244 times [2020-10-09 10:46:25,597 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:46:25,598 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853955133] [2020-10-09 10:46:25,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:46:25,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:46:25,845 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:46:25,845 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853955133] [2020-10-09 10:46:25,845 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1070445990] [2020-10-09 10:46:25,846 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 266 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 266 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:46:25,885 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-09 10:46:25,885 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:46:25,886 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-09 10:46:25,886 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:46:32,249 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:46:32,249 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:46:32,250 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-09 10:46:32,250 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520056397] [2020-10-09 10:46:32,250 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-09 10:46:32,250 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:46:32,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-09 10:46:32,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=236, Unknown=1, NotChecked=0, Total=342 [2020-10-09 10:46:32,250 INFO L87 Difference]: Start difference. First operand 231 states and 575 transitions. Second operand 19 states. [2020-10-09 10:46:36,549 WARN L193 SmtUtils]: Spent 4.11 s on a formula simplification. DAG size of input: 42 DAG size of output: 38 [2020-10-09 10:46:37,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:46:37,150 INFO L93 Difference]: Finished difference Result 320 states and 746 transitions. [2020-10-09 10:46:37,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-09 10:46:37,152 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 15 [2020-10-09 10:46:37,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:46:37,153 INFO L225 Difference]: With dead ends: 320 [2020-10-09 10:46:37,153 INFO L226 Difference]: Without dead ends: 316 [2020-10-09 10:46:37,154 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 11.2s TimeCoverageRelationStatistics Valid=231, Invalid=470, Unknown=1, NotChecked=0, Total=702 [2020-10-09 10:46:37,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2020-10-09 10:46:37,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 232. [2020-10-09 10:46:37,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 232 states. [2020-10-09 10:46:37,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 578 transitions. [2020-10-09 10:46:37,157 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 578 transitions. Word has length 15 [2020-10-09 10:46:37,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:46:37,158 INFO L481 AbstractCegarLoop]: Abstraction has 232 states and 578 transitions. [2020-10-09 10:46:37,158 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-09 10:46:37,158 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 578 transitions. [2020-10-09 10:46:37,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-09 10:46:37,158 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:46:37,158 INFO L421 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:46:37,358 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable272,266 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:46:37,359 INFO L429 AbstractCegarLoop]: === Iteration 274 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:46:37,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:46:37,359 INFO L82 PathProgramCache]: Analyzing trace with hash 492230561, now seen corresponding path program 245 times [2020-10-09 10:46:37,360 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:46:37,360 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688462872] [2020-10-09 10:46:37,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:46:37,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:46:37,612 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:46:37,612 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688462872] [2020-10-09 10:46:37,612 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [134177406] [2020-10-09 10:46:37,612 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 267 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 267 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:46:37,652 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-09 10:46:37,652 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:46:37,653 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-09 10:46:37,653 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:46:38,223 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:46:38,224 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:46:38,224 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-09 10:46:38,224 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470993930] [2020-10-09 10:46:38,224 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-09 10:46:38,224 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:46:38,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-09 10:46:38,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=237, Unknown=0, NotChecked=0, Total=342 [2020-10-09 10:46:38,225 INFO L87 Difference]: Start difference. First operand 232 states and 578 transitions. Second operand 19 states. [2020-10-09 10:46:39,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:46:39,041 INFO L93 Difference]: Finished difference Result 311 states and 727 transitions. [2020-10-09 10:46:39,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-09 10:46:39,043 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 15 [2020-10-09 10:46:39,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:46:39,044 INFO L225 Difference]: With dead ends: 311 [2020-10-09 10:46:39,044 INFO L226 Difference]: Without dead ends: 308 [2020-10-09 10:46:39,044 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=242, Invalid=460, Unknown=0, NotChecked=0, Total=702 [2020-10-09 10:46:39,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2020-10-09 10:46:39,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 232. [2020-10-09 10:46:39,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 232 states. [2020-10-09 10:46:39,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 578 transitions. [2020-10-09 10:46:39,047 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 578 transitions. Word has length 15 [2020-10-09 10:46:39,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:46:39,047 INFO L481 AbstractCegarLoop]: Abstraction has 232 states and 578 transitions. [2020-10-09 10:46:39,047 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-09 10:46:39,047 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 578 transitions. [2020-10-09 10:46:39,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-09 10:46:39,048 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:46:39,048 INFO L421 BasicCegarLoop]: trace histogram [5, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:46:39,248 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable273,267 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:46:39,248 INFO L429 AbstractCegarLoop]: === Iteration 275 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:46:39,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:46:39,249 INFO L82 PathProgramCache]: Analyzing trace with hash 519906400, now seen corresponding path program 246 times [2020-10-09 10:46:39,249 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:46:39,249 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113590042] [2020-10-09 10:46:39,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:46:39,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:46:39,484 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:46:39,485 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113590042] [2020-10-09 10:46:39,485 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1456112409] [2020-10-09 10:46:39,485 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 268 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 268 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:46:39,524 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-09 10:46:39,524 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:46:39,525 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-09 10:46:39,526 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:46:40,028 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:46:40,028 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:46:40,028 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-09 10:46:40,028 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869059109] [2020-10-09 10:46:40,028 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-09 10:46:40,028 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:46:40,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-09 10:46:40,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=237, Unknown=0, NotChecked=0, Total=342 [2020-10-09 10:46:40,029 INFO L87 Difference]: Start difference. First operand 232 states and 578 transitions. Second operand 19 states. [2020-10-09 10:46:40,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:46:40,997 INFO L93 Difference]: Finished difference Result 299 states and 700 transitions. [2020-10-09 10:46:40,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-09 10:46:40,999 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 15 [2020-10-09 10:46:40,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:46:41,000 INFO L225 Difference]: With dead ends: 299 [2020-10-09 10:46:41,000 INFO L226 Difference]: Without dead ends: 297 [2020-10-09 10:46:41,000 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=275, Invalid=537, Unknown=0, NotChecked=0, Total=812 [2020-10-09 10:46:41,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2020-10-09 10:46:41,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 235. [2020-10-09 10:46:41,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 235 states. [2020-10-09 10:46:41,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 587 transitions. [2020-10-09 10:46:41,005 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 587 transitions. Word has length 15 [2020-10-09 10:46:41,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:46:41,005 INFO L481 AbstractCegarLoop]: Abstraction has 235 states and 587 transitions. [2020-10-09 10:46:41,005 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-09 10:46:41,005 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 587 transitions. [2020-10-09 10:46:41,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-09 10:46:41,006 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:46:41,006 INFO L421 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:46:41,208 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable274,268 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:46:41,208 INFO L429 AbstractCegarLoop]: === Iteration 276 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:46:41,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:46:41,209 INFO L82 PathProgramCache]: Analyzing trace with hash 519907361, now seen corresponding path program 247 times [2020-10-09 10:46:41,209 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:46:41,209 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775878490] [2020-10-09 10:46:41,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:46:41,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:46:41,466 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:46:41,466 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775878490] [2020-10-09 10:46:41,466 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [143067119] [2020-10-09 10:46:41,466 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 269 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 269 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:46:41,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:46:41,511 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-09 10:46:41,512 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:46:44,062 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:46:44,063 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:46:44,063 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-09 10:46:44,063 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529353492] [2020-10-09 10:46:44,063 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-09 10:46:44,063 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:46:44,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-09 10:46:44,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=238, Unknown=1, NotChecked=0, Total=342 [2020-10-09 10:46:44,064 INFO L87 Difference]: Start difference. First operand 235 states and 587 transitions. Second operand 19 states. [2020-10-09 10:46:44,450 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 20 [2020-10-09 10:46:45,125 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 47 [2020-10-09 10:46:45,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:46:45,431 INFO L93 Difference]: Finished difference Result 325 states and 758 transitions. [2020-10-09 10:46:45,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-09 10:46:45,433 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 15 [2020-10-09 10:46:45,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:46:45,434 INFO L225 Difference]: With dead ends: 325 [2020-10-09 10:46:45,434 INFO L226 Difference]: Without dead ends: 321 [2020-10-09 10:46:45,434 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 180 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=248, Invalid=507, Unknown=1, NotChecked=0, Total=756 [2020-10-09 10:46:45,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2020-10-09 10:46:45,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 235. [2020-10-09 10:46:45,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 235 states. [2020-10-09 10:46:45,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 587 transitions. [2020-10-09 10:46:45,437 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 587 transitions. Word has length 15 [2020-10-09 10:46:45,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:46:45,437 INFO L481 AbstractCegarLoop]: Abstraction has 235 states and 587 transitions. [2020-10-09 10:46:45,437 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-09 10:46:45,438 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 587 transitions. [2020-10-09 10:46:45,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-09 10:46:45,438 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:46:45,438 INFO L421 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:46:45,638 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 269 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable275 [2020-10-09 10:46:45,639 INFO L429 AbstractCegarLoop]: === Iteration 277 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:46:45,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:46:45,639 INFO L82 PathProgramCache]: Analyzing trace with hash 519936191, now seen corresponding path program 248 times [2020-10-09 10:46:45,639 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:46:45,640 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301839176] [2020-10-09 10:46:45,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:46:45,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:46:45,884 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:46:45,884 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301839176] [2020-10-09 10:46:45,884 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [245021208] [2020-10-09 10:46:45,885 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 270 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 270 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:46:45,924 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-09 10:46:45,924 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:46:45,925 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-09 10:46:45,926 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:46:57,854 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 29 [2020-10-09 10:47:01,721 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:47:01,721 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:47:01,721 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-09 10:47:01,721 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796486982] [2020-10-09 10:47:01,721 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-09 10:47:01,722 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:47:01,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-09 10:47:01,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=233, Unknown=4, NotChecked=0, Total=342 [2020-10-09 10:47:01,722 INFO L87 Difference]: Start difference. First operand 235 states and 587 transitions. Second operand 19 states. [2020-10-09 10:47:06,065 WARN L193 SmtUtils]: Spent 4.12 s on a formula simplification. DAG size of input: 41 DAG size of output: 37 [2020-10-09 10:47:15,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:47:15,995 INFO L93 Difference]: Finished difference Result 337 states and 786 transitions. [2020-10-09 10:47:15,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-09 10:47:15,998 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 15 [2020-10-09 10:47:15,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:47:15,999 INFO L225 Difference]: With dead ends: 337 [2020-10-09 10:47:15,999 INFO L226 Difference]: Without dead ends: 333 [2020-10-09 10:47:16,000 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 24.8s TimeCoverageRelationStatistics Valid=253, Invalid=497, Unknown=6, NotChecked=0, Total=756 [2020-10-09 10:47:16,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2020-10-09 10:47:16,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 236. [2020-10-09 10:47:16,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 236 states. [2020-10-09 10:47:16,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 590 transitions. [2020-10-09 10:47:16,005 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 590 transitions. Word has length 15 [2020-10-09 10:47:16,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:47:16,005 INFO L481 AbstractCegarLoop]: Abstraction has 236 states and 590 transitions. [2020-10-09 10:47:16,005 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-09 10:47:16,005 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 590 transitions. [2020-10-09 10:47:16,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-09 10:47:16,006 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:47:16,006 INFO L421 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:47:16,217 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable276,270 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:47:16,217 INFO L429 AbstractCegarLoop]: === Iteration 278 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:47:16,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:47:16,218 INFO L82 PathProgramCache]: Analyzing trace with hash 520830882, now seen corresponding path program 249 times [2020-10-09 10:47:16,218 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:47:16,218 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973091831] [2020-10-09 10:47:16,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:47:16,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:47:16,478 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:47:16,478 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973091831] [2020-10-09 10:47:16,478 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2096808234] [2020-10-09 10:47:16,478 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 271 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 271 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:47:16,519 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-09 10:47:16,519 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:47:16,519 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-09 10:47:16,520 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:47:18,355 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:47:18,355 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:47:18,355 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-09 10:47:18,355 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473786148] [2020-10-09 10:47:18,356 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-09 10:47:18,356 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:47:18,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-09 10:47:18,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=240, Unknown=0, NotChecked=0, Total=342 [2020-10-09 10:47:18,356 INFO L87 Difference]: Start difference. First operand 236 states and 590 transitions. Second operand 19 states. [2020-10-09 10:47:19,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:47:19,337 INFO L93 Difference]: Finished difference Result 335 states and 781 transitions. [2020-10-09 10:47:19,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-09 10:47:19,339 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 15 [2020-10-09 10:47:19,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:47:19,340 INFO L225 Difference]: With dead ends: 335 [2020-10-09 10:47:19,340 INFO L226 Difference]: Without dead ends: 319 [2020-10-09 10:47:19,340 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=246, Invalid=510, Unknown=0, NotChecked=0, Total=756 [2020-10-09 10:47:19,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2020-10-09 10:47:19,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 236. [2020-10-09 10:47:19,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 236 states. [2020-10-09 10:47:19,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 583 transitions. [2020-10-09 10:47:19,344 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 583 transitions. Word has length 15 [2020-10-09 10:47:19,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:47:19,344 INFO L481 AbstractCegarLoop]: Abstraction has 236 states and 583 transitions. [2020-10-09 10:47:19,344 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-09 10:47:19,344 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 583 transitions. [2020-10-09 10:47:19,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-09 10:47:19,345 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:47:19,345 INFO L421 BasicCegarLoop]: trace histogram [5, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:47:19,545 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 271 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable277 [2020-10-09 10:47:19,546 INFO L429 AbstractCegarLoop]: === Iteration 279 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:47:19,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:47:19,546 INFO L82 PathProgramCache]: Analyzing trace with hash 1378780930, now seen corresponding path program 250 times [2020-10-09 10:47:19,546 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:47:19,547 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973387247] [2020-10-09 10:47:19,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:47:19,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:47:19,791 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:47:19,792 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973387247] [2020-10-09 10:47:19,792 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [405749421] [2020-10-09 10:47:19,792 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 272 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 272 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:47:19,831 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-09 10:47:19,832 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:47:19,832 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-09 10:47:19,833 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:47:20,237 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:47:20,237 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:47:20,237 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-09 10:47:20,238 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536607253] [2020-10-09 10:47:20,238 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-09 10:47:20,238 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:47:20,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-09 10:47:20,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=245, Unknown=0, NotChecked=0, Total=342 [2020-10-09 10:47:20,238 INFO L87 Difference]: Start difference. First operand 236 states and 583 transitions. Second operand 19 states. [2020-10-09 10:47:21,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:47:21,137 INFO L93 Difference]: Finished difference Result 297 states and 694 transitions. [2020-10-09 10:47:21,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-09 10:47:21,140 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 15 [2020-10-09 10:47:21,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:47:21,140 INFO L225 Difference]: With dead ends: 297 [2020-10-09 10:47:21,141 INFO L226 Difference]: Without dead ends: 295 [2020-10-09 10:47:21,141 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 211 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=307, Invalid=623, Unknown=0, NotChecked=0, Total=930 [2020-10-09 10:47:21,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2020-10-09 10:47:21,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 240. [2020-10-09 10:47:21,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 240 states. [2020-10-09 10:47:21,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 594 transitions. [2020-10-09 10:47:21,144 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 594 transitions. Word has length 15 [2020-10-09 10:47:21,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:47:21,145 INFO L481 AbstractCegarLoop]: Abstraction has 240 states and 594 transitions. [2020-10-09 10:47:21,145 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-09 10:47:21,145 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 594 transitions. [2020-10-09 10:47:21,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-09 10:47:21,145 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:47:21,145 INFO L421 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:47:21,345 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable278,272 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:47:21,346 INFO L429 AbstractCegarLoop]: === Iteration 280 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:47:21,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:47:21,346 INFO L82 PathProgramCache]: Analyzing trace with hash 1378781891, now seen corresponding path program 251 times [2020-10-09 10:47:21,347 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:47:21,347 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145506123] [2020-10-09 10:47:21,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:47:21,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:47:21,600 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:47:21,600 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145506123] [2020-10-09 10:47:21,600 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [231550038] [2020-10-09 10:47:21,601 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 273 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 273 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:47:21,638 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-09 10:47:21,639 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:47:21,639 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-09 10:47:21,640 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:47:22,059 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:47:22,060 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:47:22,060 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-09 10:47:22,060 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058232387] [2020-10-09 10:47:22,060 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-09 10:47:22,061 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:47:22,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-09 10:47:22,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=245, Unknown=0, NotChecked=0, Total=342 [2020-10-09 10:47:22,061 INFO L87 Difference]: Start difference. First operand 240 states and 594 transitions. Second operand 19 states. [2020-10-09 10:47:22,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:47:22,979 INFO L93 Difference]: Finished difference Result 321 states and 746 transitions. [2020-10-09 10:47:22,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-09 10:47:22,981 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 15 [2020-10-09 10:47:22,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:47:22,982 INFO L225 Difference]: With dead ends: 321 [2020-10-09 10:47:22,982 INFO L226 Difference]: Without dead ends: 318 [2020-10-09 10:47:22,983 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 207 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=274, Invalid=596, Unknown=0, NotChecked=0, Total=870 [2020-10-09 10:47:22,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2020-10-09 10:47:22,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 239. [2020-10-09 10:47:22,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 239 states. [2020-10-09 10:47:22,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 591 transitions. [2020-10-09 10:47:22,986 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 591 transitions. Word has length 15 [2020-10-09 10:47:22,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:47:22,986 INFO L481 AbstractCegarLoop]: Abstraction has 239 states and 591 transitions. [2020-10-09 10:47:22,986 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-09 10:47:22,986 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 591 transitions. [2020-10-09 10:47:22,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-09 10:47:22,987 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:47:22,987 INFO L421 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:47:23,187 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 273 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable279 [2020-10-09 10:47:23,187 INFO L429 AbstractCegarLoop]: === Iteration 281 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:47:23,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:47:23,188 INFO L82 PathProgramCache]: Analyzing trace with hash 1378810721, now seen corresponding path program 252 times [2020-10-09 10:47:23,188 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:47:23,188 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467143122] [2020-10-09 10:47:23,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:47:23,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:47:23,455 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:47:23,455 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467143122] [2020-10-09 10:47:23,456 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1588146941] [2020-10-09 10:47:23,456 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 274 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 274 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:47:23,497 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2020-10-09 10:47:23,498 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:47:23,499 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-09 10:47:23,499 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:47:24,163 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:47:24,163 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:47:24,163 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-09 10:47:24,163 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945518626] [2020-10-09 10:47:24,164 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-09 10:47:24,164 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:47:24,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-09 10:47:24,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-10-09 10:47:24,164 INFO L87 Difference]: Start difference. First operand 239 states and 591 transitions. Second operand 19 states. [2020-10-09 10:47:25,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:47:25,075 INFO L93 Difference]: Finished difference Result 332 states and 772 transitions. [2020-10-09 10:47:25,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-09 10:47:25,077 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 15 [2020-10-09 10:47:25,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:47:25,078 INFO L225 Difference]: With dead ends: 332 [2020-10-09 10:47:25,078 INFO L226 Difference]: Without dead ends: 328 [2020-10-09 10:47:25,078 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=267, Invalid=545, Unknown=0, NotChecked=0, Total=812 [2020-10-09 10:47:25,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2020-10-09 10:47:25,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 238. [2020-10-09 10:47:25,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 238 states. [2020-10-09 10:47:25,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 588 transitions. [2020-10-09 10:47:25,082 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 588 transitions. Word has length 15 [2020-10-09 10:47:25,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:47:25,082 INFO L481 AbstractCegarLoop]: Abstraction has 238 states and 588 transitions. [2020-10-09 10:47:25,082 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-09 10:47:25,082 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 588 transitions. [2020-10-09 10:47:25,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-09 10:47:25,082 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:47:25,082 INFO L421 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:47:25,283 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable280,274 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:47:25,283 INFO L429 AbstractCegarLoop]: === Iteration 282 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:47:25,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:47:25,283 INFO L82 PathProgramCache]: Analyzing trace with hash 1379704451, now seen corresponding path program 253 times [2020-10-09 10:47:25,284 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:47:25,284 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938606276] [2020-10-09 10:47:25,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:47:25,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:47:25,537 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:47:25,537 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938606276] [2020-10-09 10:47:25,537 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1510663116] [2020-10-09 10:47:25,537 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 275 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 275 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:47:25,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:47:25,578 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-09 10:47:25,578 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:47:25,986 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:47:25,987 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:47:25,987 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-09 10:47:25,987 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974655851] [2020-10-09 10:47:25,987 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-09 10:47:25,988 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:47:25,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-09 10:47:25,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2020-10-09 10:47:25,988 INFO L87 Difference]: Start difference. First operand 238 states and 588 transitions. Second operand 19 states. [2020-10-09 10:47:26,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:47:26,885 INFO L93 Difference]: Finished difference Result 341 states and 793 transitions. [2020-10-09 10:47:26,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-09 10:47:26,887 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 15 [2020-10-09 10:47:26,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:47:26,888 INFO L225 Difference]: With dead ends: 341 [2020-10-09 10:47:26,888 INFO L226 Difference]: Without dead ends: 337 [2020-10-09 10:47:26,888 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 237 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=302, Invalid=628, Unknown=0, NotChecked=0, Total=930 [2020-10-09 10:47:26,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2020-10-09 10:47:26,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 243. [2020-10-09 10:47:26,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 243 states. [2020-10-09 10:47:26,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 601 transitions. [2020-10-09 10:47:26,892 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 601 transitions. Word has length 15 [2020-10-09 10:47:26,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:47:26,892 INFO L481 AbstractCegarLoop]: Abstraction has 243 states and 601 transitions. [2020-10-09 10:47:26,892 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-09 10:47:26,893 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 601 transitions. [2020-10-09 10:47:26,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-09 10:47:26,893 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:47:26,893 INFO L421 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:47:27,093 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable281,275 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:47:27,094 INFO L429 AbstractCegarLoop]: === Iteration 283 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:47:27,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:47:27,094 INFO L82 PathProgramCache]: Analyzing trace with hash 1379705412, now seen corresponding path program 254 times [2020-10-09 10:47:27,094 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:47:27,095 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830790188] [2020-10-09 10:47:27,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:47:27,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:47:27,340 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:47:27,340 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830790188] [2020-10-09 10:47:27,341 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2129684721] [2020-10-09 10:47:27,341 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 276 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 276 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:47:27,379 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-09 10:47:27,380 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:47:27,381 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-09 10:47:27,381 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:47:27,777 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:47:27,777 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:47:27,777 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-09 10:47:27,777 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438738623] [2020-10-09 10:47:27,778 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-09 10:47:27,778 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:47:27,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-09 10:47:27,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-10-09 10:47:27,778 INFO L87 Difference]: Start difference. First operand 243 states and 601 transitions. Second operand 19 states. [2020-10-09 10:47:28,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:47:28,572 INFO L93 Difference]: Finished difference Result 341 states and 794 transitions. [2020-10-09 10:47:28,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-09 10:47:28,574 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 15 [2020-10-09 10:47:28,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:47:28,575 INFO L225 Difference]: With dead ends: 341 [2020-10-09 10:47:28,575 INFO L226 Difference]: Without dead ends: 326 [2020-10-09 10:47:28,576 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 211 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=261, Invalid=551, Unknown=0, NotChecked=0, Total=812 [2020-10-09 10:47:28,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2020-10-09 10:47:28,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 244. [2020-10-09 10:47:28,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 244 states. [2020-10-09 10:47:28,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 601 transitions. [2020-10-09 10:47:28,579 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 601 transitions. Word has length 15 [2020-10-09 10:47:28,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:47:28,580 INFO L481 AbstractCegarLoop]: Abstraction has 244 states and 601 transitions. [2020-10-09 10:47:28,580 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-09 10:47:28,580 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 601 transitions. [2020-10-09 10:47:28,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-09 10:47:28,580 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:47:28,580 INFO L421 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:47:28,780 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 276 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable282 [2020-10-09 10:47:28,781 INFO L429 AbstractCegarLoop]: === Iteration 284 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:47:28,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:47:28,781 INFO L82 PathProgramCache]: Analyzing trace with hash 1379734242, now seen corresponding path program 255 times [2020-10-09 10:47:28,782 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:47:28,782 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653569514] [2020-10-09 10:47:28,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:47:28,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:47:29,032 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:47:29,032 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653569514] [2020-10-09 10:47:29,033 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [435165649] [2020-10-09 10:47:29,033 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 277 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 277 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:47:29,077 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-09 10:47:29,077 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:47:29,078 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-09 10:47:29,079 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:47:29,482 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:47:29,483 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:47:29,483 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-09 10:47:29,483 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35309411] [2020-10-09 10:47:29,483 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-09 10:47:29,484 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:47:29,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-09 10:47:29,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=244, Unknown=0, NotChecked=0, Total=342 [2020-10-09 10:47:29,484 INFO L87 Difference]: Start difference. First operand 244 states and 601 transitions. Second operand 19 states. [2020-10-09 10:47:30,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:47:30,470 INFO L93 Difference]: Finished difference Result 339 states and 790 transitions. [2020-10-09 10:47:30,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-09 10:47:30,473 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 15 [2020-10-09 10:47:30,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:47:30,473 INFO L225 Difference]: With dead ends: 339 [2020-10-09 10:47:30,474 INFO L226 Difference]: Without dead ends: 328 [2020-10-09 10:47:30,474 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 250 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=301, Invalid=629, Unknown=0, NotChecked=0, Total=930 [2020-10-09 10:47:30,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2020-10-09 10:47:30,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 242. [2020-10-09 10:47:30,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 242 states. [2020-10-09 10:47:30,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 596 transitions. [2020-10-09 10:47:30,477 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 596 transitions. Word has length 15 [2020-10-09 10:47:30,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:47:30,478 INFO L481 AbstractCegarLoop]: Abstraction has 242 states and 596 transitions. [2020-10-09 10:47:30,478 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-09 10:47:30,478 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 596 transitions. [2020-10-09 10:47:30,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-09 10:47:30,478 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:47:30,478 INFO L421 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:47:30,678 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable283,277 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:47:30,679 INFO L429 AbstractCegarLoop]: === Iteration 285 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:47:30,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:47:30,679 INFO L82 PathProgramCache]: Analyzing trace with hash 1407411042, now seen corresponding path program 256 times [2020-10-09 10:47:30,680 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:47:30,680 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067932185] [2020-10-09 10:47:30,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:47:30,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:47:30,926 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:47:30,926 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067932185] [2020-10-09 10:47:30,926 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [469831927] [2020-10-09 10:47:30,927 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 278 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 278 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:47:30,966 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-09 10:47:30,966 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:47:30,967 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-09 10:47:30,967 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:47:31,521 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:47:31,521 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:47:31,521 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-09 10:47:31,521 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422467511] [2020-10-09 10:47:31,522 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-09 10:47:31,522 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:47:31,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-09 10:47:31,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=245, Unknown=0, NotChecked=0, Total=342 [2020-10-09 10:47:31,522 INFO L87 Difference]: Start difference. First operand 242 states and 596 transitions. Second operand 19 states. [2020-10-09 10:47:32,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:47:32,828 INFO L93 Difference]: Finished difference Result 344 states and 797 transitions. [2020-10-09 10:47:32,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-09 10:47:32,830 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 15 [2020-10-09 10:47:32,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:47:32,832 INFO L225 Difference]: With dead ends: 344 [2020-10-09 10:47:32,832 INFO L226 Difference]: Without dead ends: 331 [2020-10-09 10:47:32,832 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 262 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=318, Invalid=674, Unknown=0, NotChecked=0, Total=992 [2020-10-09 10:47:32,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2020-10-09 10:47:32,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 242. [2020-10-09 10:47:32,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 242 states. [2020-10-09 10:47:32,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 594 transitions. [2020-10-09 10:47:32,837 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 594 transitions. Word has length 15 [2020-10-09 10:47:32,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:47:32,837 INFO L481 AbstractCegarLoop]: Abstraction has 242 states and 594 transitions. [2020-10-09 10:47:32,837 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-09 10:47:32,837 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 594 transitions. [2020-10-09 10:47:32,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-09 10:47:32,838 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:47:32,838 INFO L421 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:47:33,043 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable284,278 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:47:33,043 INFO L429 AbstractCegarLoop]: === Iteration 286 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:47:33,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:47:33,044 INFO L82 PathProgramCache]: Analyzing trace with hash 1407439872, now seen corresponding path program 257 times [2020-10-09 10:47:33,044 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:47:33,044 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326558907] [2020-10-09 10:47:33,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:47:33,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:47:33,291 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:47:33,292 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326558907] [2020-10-09 10:47:33,292 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [547179072] [2020-10-09 10:47:33,292 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 279 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 279 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:47:33,338 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-09 10:47:33,338 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:47:33,339 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-09 10:47:33,339 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:47:42,032 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:47:42,032 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:47:42,032 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-09 10:47:42,033 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756687935] [2020-10-09 10:47:42,033 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-09 10:47:42,033 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:47:42,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-09 10:47:42,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=243, Unknown=2, NotChecked=0, Total=342 [2020-10-09 10:47:42,033 INFO L87 Difference]: Start difference. First operand 242 states and 594 transitions. Second operand 19 states. [2020-10-09 10:47:46,490 WARN L193 SmtUtils]: Spent 4.13 s on a formula simplification. DAG size of input: 52 DAG size of output: 42 [2020-10-09 10:47:50,824 WARN L193 SmtUtils]: Spent 4.12 s on a formula simplification. DAG size of input: 48 DAG size of output: 41 [2020-10-09 10:47:53,375 WARN L193 SmtUtils]: Spent 2.04 s on a formula simplification that was a NOOP. DAG size: 35 [2020-10-09 10:47:53,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:47:53,781 INFO L93 Difference]: Finished difference Result 327 states and 762 transitions. [2020-10-09 10:47:53,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-09 10:47:53,783 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 15 [2020-10-09 10:47:53,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:47:53,784 INFO L225 Difference]: With dead ends: 327 [2020-10-09 10:47:53,784 INFO L226 Difference]: Without dead ends: 323 [2020-10-09 10:47:53,785 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 20.2s TimeCoverageRelationStatistics Valid=292, Invalid=636, Unknown=2, NotChecked=0, Total=930 [2020-10-09 10:47:53,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2020-10-09 10:47:53,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 240. [2020-10-09 10:47:53,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 240 states. [2020-10-09 10:47:53,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 590 transitions. [2020-10-09 10:47:53,788 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 590 transitions. Word has length 15 [2020-10-09 10:47:53,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:47:53,789 INFO L481 AbstractCegarLoop]: Abstraction has 240 states and 590 transitions. [2020-10-09 10:47:53,789 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-09 10:47:53,789 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 590 transitions. [2020-10-09 10:47:53,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-09 10:47:53,789 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:47:53,789 INFO L421 BasicCegarLoop]: trace histogram [5, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:47:53,989 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable285,279 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:47:53,990 INFO L429 AbstractCegarLoop]: === Iteration 287 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:47:53,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:47:53,990 INFO L82 PathProgramCache]: Analyzing trace with hash -2060879712, now seen corresponding path program 258 times [2020-10-09 10:47:53,991 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:47:53,991 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546533213] [2020-10-09 10:47:53,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:47:53,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:47:54,266 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:47:54,266 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546533213] [2020-10-09 10:47:54,266 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2115492695] [2020-10-09 10:47:54,266 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 280 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 280 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:47:54,312 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2020-10-09 10:47:54,312 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:47:54,313 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-09 10:47:54,313 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:47:54,708 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:47:54,708 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:47:54,708 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-09 10:47:54,708 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187675669] [2020-10-09 10:47:54,708 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-09 10:47:54,709 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:47:54,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-09 10:47:54,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2020-10-09 10:47:54,709 INFO L87 Difference]: Start difference. First operand 240 states and 590 transitions. Second operand 19 states. [2020-10-09 10:47:55,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:47:55,463 INFO L93 Difference]: Finished difference Result 291 states and 682 transitions. [2020-10-09 10:47:55,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-09 10:47:55,465 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 15 [2020-10-09 10:47:55,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:47:55,466 INFO L225 Difference]: With dead ends: 291 [2020-10-09 10:47:55,466 INFO L226 Difference]: Without dead ends: 289 [2020-10-09 10:47:55,466 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 195 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=237, Invalid=519, Unknown=0, NotChecked=0, Total=756 [2020-10-09 10:47:55,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2020-10-09 10:47:55,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 246. [2020-10-09 10:47:55,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 246 states. [2020-10-09 10:47:55,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 605 transitions. [2020-10-09 10:47:55,470 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 605 transitions. Word has length 15 [2020-10-09 10:47:55,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:47:55,470 INFO L481 AbstractCegarLoop]: Abstraction has 246 states and 605 transitions. [2020-10-09 10:47:55,470 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-09 10:47:55,470 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 605 transitions. [2020-10-09 10:47:55,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-09 10:47:55,471 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:47:55,471 INFO L421 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:47:55,671 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable286,280 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:47:55,671 INFO L429 AbstractCegarLoop]: === Iteration 288 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:47:55,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:47:55,672 INFO L82 PathProgramCache]: Analyzing trace with hash -2060878751, now seen corresponding path program 259 times [2020-10-09 10:47:55,672 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:47:55,672 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54705799] [2020-10-09 10:47:55,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:47:55,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:47:55,955 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:47:55,956 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54705799] [2020-10-09 10:47:55,956 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1316250181] [2020-10-09 10:47:55,956 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 281 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 281 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:47:55,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:47:55,995 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-09 10:47:55,995 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:47:56,422 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:47:56,422 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:47:56,422 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-09 10:47:56,423 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405051964] [2020-10-09 10:47:56,423 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-09 10:47:56,423 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:47:56,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-09 10:47:56,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=248, Unknown=0, NotChecked=0, Total=342 [2020-10-09 10:47:56,423 INFO L87 Difference]: Start difference. First operand 246 states and 605 transitions. Second operand 19 states. [2020-10-09 10:47:57,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:47:57,267 INFO L93 Difference]: Finished difference Result 316 states and 735 transitions. [2020-10-09 10:47:57,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-09 10:47:57,269 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 15 [2020-10-09 10:47:57,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:47:57,270 INFO L225 Difference]: With dead ends: 316 [2020-10-09 10:47:57,270 INFO L226 Difference]: Without dead ends: 313 [2020-10-09 10:47:57,271 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=234, Invalid=522, Unknown=0, NotChecked=0, Total=756 [2020-10-09 10:47:57,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2020-10-09 10:47:57,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 245. [2020-10-09 10:47:57,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 245 states. [2020-10-09 10:47:57,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 602 transitions. [2020-10-09 10:47:57,274 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 602 transitions. Word has length 15 [2020-10-09 10:47:57,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:47:57,274 INFO L481 AbstractCegarLoop]: Abstraction has 245 states and 602 transitions. [2020-10-09 10:47:57,274 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-09 10:47:57,274 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 602 transitions. [2020-10-09 10:47:57,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-09 10:47:57,274 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:47:57,274 INFO L421 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:47:57,475 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 281 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable287 [2020-10-09 10:47:57,475 INFO L429 AbstractCegarLoop]: === Iteration 289 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:47:57,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:47:57,476 INFO L82 PathProgramCache]: Analyzing trace with hash -2060849921, now seen corresponding path program 260 times [2020-10-09 10:47:57,476 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:47:57,476 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724370693] [2020-10-09 10:47:57,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:47:57,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:47:57,769 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:47:57,769 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724370693] [2020-10-09 10:47:57,769 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [255522056] [2020-10-09 10:47:57,770 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 282 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 282 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:47:57,811 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-09 10:47:57,811 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:47:57,812 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-09 10:47:57,813 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:48:00,426 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:48:00,426 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:48:00,427 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-09 10:48:00,427 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168633758] [2020-10-09 10:48:00,427 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-09 10:48:00,427 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:48:00,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-09 10:48:00,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=245, Unknown=0, NotChecked=0, Total=342 [2020-10-09 10:48:00,427 INFO L87 Difference]: Start difference. First operand 245 states and 602 transitions. Second operand 19 states. [2020-10-09 10:48:01,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:48:01,401 INFO L93 Difference]: Finished difference Result 330 states and 766 transitions. [2020-10-09 10:48:01,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-09 10:48:01,403 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 15 [2020-10-09 10:48:01,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:48:01,404 INFO L225 Difference]: With dead ends: 330 [2020-10-09 10:48:01,404 INFO L226 Difference]: Without dead ends: 326 [2020-10-09 10:48:01,405 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 194 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=238, Invalid=518, Unknown=0, NotChecked=0, Total=756 [2020-10-09 10:48:01,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2020-10-09 10:48:01,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 244. [2020-10-09 10:48:01,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 244 states. [2020-10-09 10:48:01,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 599 transitions. [2020-10-09 10:48:01,409 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 599 transitions. Word has length 15 [2020-10-09 10:48:01,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:48:01,409 INFO L481 AbstractCegarLoop]: Abstraction has 244 states and 599 transitions. [2020-10-09 10:48:01,409 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-09 10:48:01,409 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 599 transitions. [2020-10-09 10:48:01,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-09 10:48:01,409 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:48:01,409 INFO L421 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:48:01,610 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 282 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable288 [2020-10-09 10:48:01,610 INFO L429 AbstractCegarLoop]: === Iteration 290 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:48:01,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:48:01,611 INFO L82 PathProgramCache]: Analyzing trace with hash -2059956191, now seen corresponding path program 261 times [2020-10-09 10:48:01,611 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:48:01,611 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9348968] [2020-10-09 10:48:01,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:48:01,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:48:01,901 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:48:01,901 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9348968] [2020-10-09 10:48:01,902 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1101761252] [2020-10-09 10:48:01,902 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 283 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 283 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:48:01,942 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-10-09 10:48:01,943 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:48:01,944 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-09 10:48:01,944 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:48:02,469 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:48:02,469 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:48:02,469 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-09 10:48:02,470 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728857526] [2020-10-09 10:48:02,470 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-09 10:48:02,470 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:48:02,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-09 10:48:02,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=245, Unknown=0, NotChecked=0, Total=342 [2020-10-09 10:48:02,470 INFO L87 Difference]: Start difference. First operand 244 states and 599 transitions. Second operand 19 states. [2020-10-09 10:48:03,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:48:03,637 INFO L93 Difference]: Finished difference Result 328 states and 761 transitions. [2020-10-09 10:48:03,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-09 10:48:03,640 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 15 [2020-10-09 10:48:03,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:48:03,641 INFO L225 Difference]: With dead ends: 328 [2020-10-09 10:48:03,641 INFO L226 Difference]: Without dead ends: 324 [2020-10-09 10:48:03,641 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=274, Invalid=596, Unknown=0, NotChecked=0, Total=870 [2020-10-09 10:48:03,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2020-10-09 10:48:03,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 251. [2020-10-09 10:48:03,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 251 states. [2020-10-09 10:48:03,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 616 transitions. [2020-10-09 10:48:03,644 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 616 transitions. Word has length 15 [2020-10-09 10:48:03,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:48:03,644 INFO L481 AbstractCegarLoop]: Abstraction has 251 states and 616 transitions. [2020-10-09 10:48:03,645 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-09 10:48:03,645 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 616 transitions. [2020-10-09 10:48:03,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-09 10:48:03,645 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:48:03,645 INFO L421 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:48:03,845 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 283 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable289 [2020-10-09 10:48:03,846 INFO L429 AbstractCegarLoop]: === Iteration 291 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:48:03,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:48:03,846 INFO L82 PathProgramCache]: Analyzing trace with hash -2059955230, now seen corresponding path program 262 times [2020-10-09 10:48:03,846 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:48:03,847 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758009900] [2020-10-09 10:48:03,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:48:03,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:48:04,127 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:48:04,127 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758009900] [2020-10-09 10:48:04,127 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2110238159] [2020-10-09 10:48:04,127 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 284 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 284 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:48:04,175 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-09 10:48:04,175 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:48:04,176 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-09 10:48:04,176 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:48:09,046 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:48:09,047 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:48:09,047 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-09 10:48:09,047 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029363004] [2020-10-09 10:48:09,047 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-09 10:48:09,047 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:48:09,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-09 10:48:09,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=243, Unknown=2, NotChecked=0, Total=342 [2020-10-09 10:48:09,048 INFO L87 Difference]: Start difference. First operand 251 states and 616 transitions. Second operand 19 states. [2020-10-09 10:48:13,654 WARN L193 SmtUtils]: Spent 4.13 s on a formula simplification. DAG size of input: 52 DAG size of output: 42 [2020-10-09 10:48:17,875 WARN L193 SmtUtils]: Spent 4.13 s on a formula simplification. DAG size of input: 48 DAG size of output: 41 [2020-10-09 10:48:20,242 WARN L193 SmtUtils]: Spent 2.04 s on a formula simplification that was a NOOP. DAG size: 35 [2020-10-09 10:48:21,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:48:21,096 INFO L93 Difference]: Finished difference Result 348 states and 801 transitions. [2020-10-09 10:48:21,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-09 10:48:21,099 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 15 [2020-10-09 10:48:21,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:48:21,099 INFO L225 Difference]: With dead ends: 348 [2020-10-09 10:48:21,100 INFO L226 Difference]: Without dead ends: 332 [2020-10-09 10:48:21,100 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 237 ImplicationChecksByTransitivity, 16.4s TimeCoverageRelationStatistics Valid=292, Invalid=636, Unknown=2, NotChecked=0, Total=930 [2020-10-09 10:48:21,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2020-10-09 10:48:21,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 254. [2020-10-09 10:48:21,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 254 states. [2020-10-09 10:48:21,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 619 transitions. [2020-10-09 10:48:21,103 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 619 transitions. Word has length 15 [2020-10-09 10:48:21,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:48:21,103 INFO L481 AbstractCegarLoop]: Abstraction has 254 states and 619 transitions. [2020-10-09 10:48:21,103 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-09 10:48:21,103 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 619 transitions. [2020-10-09 10:48:21,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-09 10:48:21,104 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:48:21,104 INFO L421 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:48:21,304 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable290,284 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:48:21,304 INFO L429 AbstractCegarLoop]: === Iteration 292 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:48:21,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:48:21,305 INFO L82 PathProgramCache]: Analyzing trace with hash -2059926400, now seen corresponding path program 263 times [2020-10-09 10:48:21,305 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:48:21,305 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303975264] [2020-10-09 10:48:21,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:48:21,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:48:21,588 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:48:21,588 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303975264] [2020-10-09 10:48:21,588 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [352215457] [2020-10-09 10:48:21,588 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 285 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 285 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:48:21,630 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2020-10-09 10:48:21,631 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:48:21,631 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-09 10:48:21,632 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:48:22,222 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:48:22,222 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:48:22,222 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-09 10:48:22,222 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162982206] [2020-10-09 10:48:22,222 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-09 10:48:22,222 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:48:22,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-09 10:48:22,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=245, Unknown=0, NotChecked=0, Total=342 [2020-10-09 10:48:22,223 INFO L87 Difference]: Start difference. First operand 254 states and 619 transitions. Second operand 19 states. [2020-10-09 10:48:23,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:48:23,637 INFO L93 Difference]: Finished difference Result 342 states and 787 transitions. [2020-10-09 10:48:23,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-09 10:48:23,640 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 15 [2020-10-09 10:48:23,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:48:23,641 INFO L225 Difference]: With dead ends: 342 [2020-10-09 10:48:23,641 INFO L226 Difference]: Without dead ends: 331 [2020-10-09 10:48:23,642 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 293 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=342, Invalid=714, Unknown=0, NotChecked=0, Total=1056 [2020-10-09 10:48:23,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2020-10-09 10:48:23,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 250. [2020-10-09 10:48:23,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 250 states. [2020-10-09 10:48:23,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 611 transitions. [2020-10-09 10:48:23,646 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 611 transitions. Word has length 15 [2020-10-09 10:48:23,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:48:23,646 INFO L481 AbstractCegarLoop]: Abstraction has 250 states and 611 transitions. [2020-10-09 10:48:23,646 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-09 10:48:23,646 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 611 transitions. [2020-10-09 10:48:23,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-09 10:48:23,647 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:48:23,647 INFO L421 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:48:23,847 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 285 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable291 [2020-10-09 10:48:23,847 INFO L429 AbstractCegarLoop]: === Iteration 293 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:48:23,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:48:23,848 INFO L82 PathProgramCache]: Analyzing trace with hash -2032250561, now seen corresponding path program 264 times [2020-10-09 10:48:23,848 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:48:23,848 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268273347] [2020-10-09 10:48:23,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:48:23,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:48:24,139 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:48:24,140 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268273347] [2020-10-09 10:48:24,140 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1298151483] [2020-10-09 10:48:24,140 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 286 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 286 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:48:24,180 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2020-10-09 10:48:24,181 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:48:24,182 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-09 10:48:24,182 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:48:24,586 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:48:24,586 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:48:24,586 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-09 10:48:24,587 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376483338] [2020-10-09 10:48:24,587 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-09 10:48:24,587 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:48:24,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-09 10:48:24,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2020-10-09 10:48:24,588 INFO L87 Difference]: Start difference. First operand 250 states and 611 transitions. Second operand 19 states. [2020-10-09 10:48:25,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:48:25,549 INFO L93 Difference]: Finished difference Result 326 states and 755 transitions. [2020-10-09 10:48:25,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-09 10:48:25,552 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 15 [2020-10-09 10:48:25,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:48:25,552 INFO L225 Difference]: With dead ends: 326 [2020-10-09 10:48:25,553 INFO L226 Difference]: Without dead ends: 322 [2020-10-09 10:48:25,553 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 260 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=298, Invalid=694, Unknown=0, NotChecked=0, Total=992 [2020-10-09 10:48:25,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2020-10-09 10:48:25,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 255. [2020-10-09 10:48:25,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 255 states. [2020-10-09 10:48:25,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 623 transitions. [2020-10-09 10:48:25,557 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 623 transitions. Word has length 15 [2020-10-09 10:48:25,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:48:25,557 INFO L481 AbstractCegarLoop]: Abstraction has 255 states and 623 transitions. [2020-10-09 10:48:25,557 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-09 10:48:25,557 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 623 transitions. [2020-10-09 10:48:25,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-09 10:48:25,558 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:48:25,558 INFO L421 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:48:25,758 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 286 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable292 [2020-10-09 10:48:25,758 INFO L429 AbstractCegarLoop]: === Iteration 294 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:48:25,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:48:25,759 INFO L82 PathProgramCache]: Analyzing trace with hash -2032220770, now seen corresponding path program 265 times [2020-10-09 10:48:25,759 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:48:25,759 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11373847] [2020-10-09 10:48:25,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:48:25,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:48:26,047 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:48:26,048 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11373847] [2020-10-09 10:48:26,048 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1408115147] [2020-10-09 10:48:26,048 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 287 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 287 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:48:26,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:48:26,089 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-09 10:48:26,089 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:48:26,472 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:48:26,472 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:48:26,472 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-09 10:48:26,472 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429255677] [2020-10-09 10:48:26,473 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-09 10:48:26,473 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:48:26,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-09 10:48:26,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-10-09 10:48:26,473 INFO L87 Difference]: Start difference. First operand 255 states and 623 transitions. Second operand 19 states. [2020-10-09 10:48:27,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:48:27,314 INFO L93 Difference]: Finished difference Result 341 states and 782 transitions. [2020-10-09 10:48:27,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-09 10:48:27,317 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 15 [2020-10-09 10:48:27,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:48:27,317 INFO L225 Difference]: With dead ends: 341 [2020-10-09 10:48:27,317 INFO L226 Difference]: Without dead ends: 330 [2020-10-09 10:48:27,318 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=261, Invalid=551, Unknown=0, NotChecked=0, Total=812 [2020-10-09 10:48:27,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2020-10-09 10:48:27,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 251. [2020-10-09 10:48:27,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 251 states. [2020-10-09 10:48:27,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 615 transitions. [2020-10-09 10:48:27,322 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 615 transitions. Word has length 15 [2020-10-09 10:48:27,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:48:27,322 INFO L481 AbstractCegarLoop]: Abstraction has 251 states and 615 transitions. [2020-10-09 10:48:27,322 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-09 10:48:27,322 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 615 transitions. [2020-10-09 10:48:27,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-09 10:48:27,323 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:48:27,323 INFO L421 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:48:27,523 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable293,287 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:48:27,523 INFO L429 AbstractCegarLoop]: === Iteration 295 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:48:27,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:48:27,524 INFO L82 PathProgramCache]: Analyzing trace with hash -1173375070, now seen corresponding path program 266 times [2020-10-09 10:48:27,524 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:48:27,524 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441370950] [2020-10-09 10:48:27,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:48:27,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:48:27,838 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:48:27,838 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441370950] [2020-10-09 10:48:27,838 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [145863342] [2020-10-09 10:48:27,838 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 288 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 288 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:48:27,878 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-09 10:48:27,878 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:48:27,879 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-09 10:48:27,880 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:48:31,926 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:48:31,927 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:48:31,927 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-09 10:48:31,927 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044773467] [2020-10-09 10:48:31,927 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-09 10:48:31,927 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:48:31,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-09 10:48:31,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-10-09 10:48:31,928 INFO L87 Difference]: Start difference. First operand 251 states and 615 transitions. Second operand 19 states. [2020-10-09 10:48:32,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:48:32,944 INFO L93 Difference]: Finished difference Result 325 states and 750 transitions. [2020-10-09 10:48:32,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-09 10:48:32,947 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 15 [2020-10-09 10:48:32,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:48:32,948 INFO L225 Difference]: With dead ends: 325 [2020-10-09 10:48:32,948 INFO L226 Difference]: Without dead ends: 313 [2020-10-09 10:48:32,948 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=250, Invalid=506, Unknown=0, NotChecked=0, Total=756 [2020-10-09 10:48:32,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2020-10-09 10:48:32,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 249. [2020-10-09 10:48:32,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 249 states. [2020-10-09 10:48:32,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 610 transitions. [2020-10-09 10:48:32,951 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 610 transitions. Word has length 15 [2020-10-09 10:48:32,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:48:32,952 INFO L481 AbstractCegarLoop]: Abstraction has 249 states and 610 transitions. [2020-10-09 10:48:32,952 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-09 10:48:32,952 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 610 transitions. [2020-10-09 10:48:32,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-09 10:48:32,952 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:48:32,952 INFO L421 BasicCegarLoop]: trace histogram [5, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:48:33,152 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable294,288 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:48:33,153 INFO L429 AbstractCegarLoop]: === Iteration 296 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:48:33,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:48:33,153 INFO L82 PathProgramCache]: Analyzing trace with hash -1173345279, now seen corresponding path program 267 times [2020-10-09 10:48:33,154 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:48:33,154 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418439013] [2020-10-09 10:48:33,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:48:33,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:48:33,466 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:48:33,466 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418439013] [2020-10-09 10:48:33,466 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [535032400] [2020-10-09 10:48:33,466 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 289 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 289 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:48:33,507 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-10-09 10:48:33,507 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:48:33,508 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-09 10:48:33,508 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:48:37,033 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:48:37,033 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:48:37,033 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-09 10:48:37,034 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247430089] [2020-10-09 10:48:37,034 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-09 10:48:37,034 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:48:37,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-09 10:48:37,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=239, Unknown=0, NotChecked=0, Total=342 [2020-10-09 10:48:37,034 INFO L87 Difference]: Start difference. First operand 249 states and 610 transitions. Second operand 19 states. [2020-10-09 10:48:38,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:48:38,408 INFO L93 Difference]: Finished difference Result 320 states and 735 transitions. [2020-10-09 10:48:38,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-09 10:48:38,411 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 15 [2020-10-09 10:48:38,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:48:38,412 INFO L225 Difference]: With dead ends: 320 [2020-10-09 10:48:38,412 INFO L226 Difference]: Without dead ends: 307 [2020-10-09 10:48:38,412 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 214 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=291, Invalid=579, Unknown=0, NotChecked=0, Total=870 [2020-10-09 10:48:38,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2020-10-09 10:48:38,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 246. [2020-10-09 10:48:38,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 246 states. [2020-10-09 10:48:38,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 602 transitions. [2020-10-09 10:48:38,416 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 602 transitions. Word has length 15 [2020-10-09 10:48:38,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:48:38,416 INFO L481 AbstractCegarLoop]: Abstraction has 246 states and 602 transitions. [2020-10-09 10:48:38,416 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-09 10:48:38,417 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 602 transitions. [2020-10-09 10:48:38,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-09 10:48:38,417 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:48:38,417 INFO L421 BasicCegarLoop]: trace histogram [5, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:48:38,617 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable295,289 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:48:38,618 INFO L429 AbstractCegarLoop]: === Iteration 297 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:48:38,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:48:38,618 INFO L82 PathProgramCache]: Analyzing trace with hash -1143823359, now seen corresponding path program 268 times [2020-10-09 10:48:38,618 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:48:38,619 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978372711] [2020-10-09 10:48:38,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:48:38,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:48:38,981 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:48:38,982 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978372711] [2020-10-09 10:48:38,982 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1864717906] [2020-10-09 10:48:38,982 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 290 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 290 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:48:39,023 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-09 10:48:39,023 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:48:39,024 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-09 10:48:39,024 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:48:39,515 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:48:39,516 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:48:39,516 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-09 10:48:39,516 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921643391] [2020-10-09 10:48:39,516 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-09 10:48:39,516 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:48:39,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-09 10:48:39,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=241, Unknown=0, NotChecked=0, Total=342 [2020-10-09 10:48:39,517 INFO L87 Difference]: Start difference. First operand 246 states and 602 transitions. Second operand 19 states. [2020-10-09 10:48:40,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:48:40,027 INFO L93 Difference]: Finished difference Result 300 states and 697 transitions. [2020-10-09 10:48:40,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-09 10:48:40,030 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 15 [2020-10-09 10:48:40,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:48:40,030 INFO L225 Difference]: With dead ends: 300 [2020-10-09 10:48:40,030 INFO L226 Difference]: Without dead ends: 289 [2020-10-09 10:48:40,031 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=171, Invalid=381, Unknown=0, NotChecked=0, Total=552 [2020-10-09 10:48:40,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2020-10-09 10:48:40,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 248. [2020-10-09 10:48:40,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 248 states. [2020-10-09 10:48:40,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 604 transitions. [2020-10-09 10:48:40,035 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 604 transitions. Word has length 15 [2020-10-09 10:48:40,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:48:40,035 INFO L481 AbstractCegarLoop]: Abstraction has 248 states and 604 transitions. [2020-10-09 10:48:40,035 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-09 10:48:40,035 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 604 transitions. [2020-10-09 10:48:40,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-09 10:48:40,035 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:48:40,035 INFO L421 BasicCegarLoop]: trace histogram [5, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:48:40,236 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 290 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable296 [2020-10-09 10:48:40,236 INFO L429 AbstractCegarLoop]: === Iteration 298 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:48:40,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:48:40,237 INFO L82 PathProgramCache]: Analyzing trace with hash 439566480, now seen corresponding path program 269 times [2020-10-09 10:48:40,237 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:48:40,237 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700394407] [2020-10-09 10:48:40,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:48:40,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:48:40,652 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:48:40,652 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700394407] [2020-10-09 10:48:40,652 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1757256771] [2020-10-09 10:48:40,652 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 291 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 291 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:48:40,697 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-09 10:48:40,697 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:48:40,698 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-09 10:48:40,698 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:48:41,164 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:48:41,165 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:48:41,165 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-09 10:48:41,165 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348660939] [2020-10-09 10:48:41,165 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-09 10:48:41,165 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:48:41,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-09 10:48:41,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=253, Unknown=0, NotChecked=0, Total=342 [2020-10-09 10:48:41,166 INFO L87 Difference]: Start difference. First operand 248 states and 604 transitions. Second operand 19 states. [2020-10-09 10:48:41,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:48:41,785 INFO L93 Difference]: Finished difference Result 308 states and 716 transitions. [2020-10-09 10:48:41,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-09 10:48:41,788 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 15 [2020-10-09 10:48:41,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:48:41,789 INFO L225 Difference]: With dead ends: 308 [2020-10-09 10:48:41,789 INFO L226 Difference]: Without dead ends: 306 [2020-10-09 10:48:41,789 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=180, Invalid=420, Unknown=0, NotChecked=0, Total=600 [2020-10-09 10:48:41,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2020-10-09 10:48:41,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 254. [2020-10-09 10:48:41,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 254 states. [2020-10-09 10:48:41,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 622 transitions. [2020-10-09 10:48:41,793 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 622 transitions. Word has length 15 [2020-10-09 10:48:41,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:48:41,793 INFO L481 AbstractCegarLoop]: Abstraction has 254 states and 622 transitions. [2020-10-09 10:48:41,793 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-09 10:48:41,794 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 622 transitions. [2020-10-09 10:48:41,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-09 10:48:41,794 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:48:41,794 INFO L421 BasicCegarLoop]: trace histogram [5, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:48:41,994 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable297,291 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:48:41,995 INFO L429 AbstractCegarLoop]: === Iteration 299 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:48:41,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:48:41,995 INFO L82 PathProgramCache]: Analyzing trace with hash 439595310, now seen corresponding path program 270 times [2020-10-09 10:48:41,995 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:48:41,996 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343520969] [2020-10-09 10:48:41,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:48:42,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:48:42,392 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:48:42,392 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343520969] [2020-10-09 10:48:42,392 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [425665381] [2020-10-09 10:48:42,392 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 292 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 292 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:48:42,433 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-09 10:48:42,433 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:48:42,434 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-09 10:48:42,435 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:48:44,985 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:48:44,985 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:48:44,985 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-09 10:48:44,986 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675522247] [2020-10-09 10:48:44,986 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-09 10:48:44,986 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:48:44,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-09 10:48:44,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2020-10-09 10:48:44,986 INFO L87 Difference]: Start difference. First operand 254 states and 622 transitions. Second operand 19 states. [2020-10-09 10:48:45,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:48:45,877 INFO L93 Difference]: Finished difference Result 335 states and 780 transitions. [2020-10-09 10:48:45,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-09 10:48:45,880 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 15 [2020-10-09 10:48:45,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:48:45,881 INFO L225 Difference]: With dead ends: 335 [2020-10-09 10:48:45,881 INFO L226 Difference]: Without dead ends: 332 [2020-10-09 10:48:45,881 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=227, Invalid=475, Unknown=0, NotChecked=0, Total=702 [2020-10-09 10:48:45,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2020-10-09 10:48:45,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 252. [2020-10-09 10:48:45,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 252 states. [2020-10-09 10:48:45,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 616 transitions. [2020-10-09 10:48:45,885 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 616 transitions. Word has length 15 [2020-10-09 10:48:45,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:48:45,885 INFO L481 AbstractCegarLoop]: Abstraction has 252 states and 616 transitions. [2020-10-09 10:48:45,885 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-09 10:48:45,885 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 616 transitions. [2020-10-09 10:48:45,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-09 10:48:45,886 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:48:45,886 INFO L421 BasicCegarLoop]: trace histogram [5, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:48:46,086 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 292 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable298 [2020-10-09 10:48:46,086 INFO L429 AbstractCegarLoop]: === Iteration 300 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:48:46,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:48:46,087 INFO L82 PathProgramCache]: Analyzing trace with hash 440489040, now seen corresponding path program 271 times [2020-10-09 10:48:46,087 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:48:46,088 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043493709] [2020-10-09 10:48:46,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:48:46,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:48:46,433 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:48:46,434 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043493709] [2020-10-09 10:48:46,434 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [968377289] [2020-10-09 10:48:46,434 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 293 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 293 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:48:46,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:48:46,478 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-09 10:48:46,478 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:48:53,037 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:48:53,037 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:48:53,037 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-09 10:48:53,037 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444938703] [2020-10-09 10:48:53,037 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-09 10:48:53,037 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:48:53,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-09 10:48:53,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2020-10-09 10:48:53,038 INFO L87 Difference]: Start difference. First operand 252 states and 616 transitions. Second operand 19 states. [2020-10-09 10:48:54,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:48:54,162 INFO L93 Difference]: Finished difference Result 329 states and 762 transitions. [2020-10-09 10:48:54,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-09 10:48:54,165 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 15 [2020-10-09 10:48:54,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:48:54,165 INFO L225 Difference]: With dead ends: 329 [2020-10-09 10:48:54,165 INFO L226 Difference]: Without dead ends: 327 [2020-10-09 10:48:54,166 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 7.6s TimeCoverageRelationStatistics Valid=263, Invalid=549, Unknown=0, NotChecked=0, Total=812 [2020-10-09 10:48:54,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2020-10-09 10:48:54,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 254. [2020-10-09 10:48:54,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 254 states. [2020-10-09 10:48:54,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 622 transitions. [2020-10-09 10:48:54,169 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 622 transitions. Word has length 15 [2020-10-09 10:48:54,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:48:54,169 INFO L481 AbstractCegarLoop]: Abstraction has 254 states and 622 transitions. [2020-10-09 10:48:54,169 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-09 10:48:54,169 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 622 transitions. [2020-10-09 10:48:54,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-09 10:48:54,169 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:48:54,170 INFO L421 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:48:54,370 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 293 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable299 [2020-10-09 10:48:54,370 INFO L429 AbstractCegarLoop]: === Iteration 301 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:48:54,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:48:54,371 INFO L82 PathProgramCache]: Analyzing trace with hash 440490001, now seen corresponding path program 272 times [2020-10-09 10:48:54,371 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:48:54,371 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099438715] [2020-10-09 10:48:54,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:48:54,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:48:54,730 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:48:54,730 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099438715] [2020-10-09 10:48:54,731 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2009513387] [2020-10-09 10:48:54,731 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 294 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 294 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:48:54,771 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-09 10:48:54,771 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:48:54,772 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-09 10:48:54,773 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:48:57,419 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:48:57,419 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:48:57,419 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-09 10:48:57,419 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96840865] [2020-10-09 10:48:57,420 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-09 10:48:57,420 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:48:57,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-09 10:48:57,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=251, Unknown=1, NotChecked=0, Total=342 [2020-10-09 10:48:57,420 INFO L87 Difference]: Start difference. First operand 254 states and 622 transitions. Second operand 19 states. [2020-10-09 10:49:01,868 WARN L193 SmtUtils]: Spent 4.13 s on a formula simplification. DAG size of input: 42 DAG size of output: 38 [2020-10-09 10:49:02,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:49:02,755 INFO L93 Difference]: Finished difference Result 362 states and 839 transitions. [2020-10-09 10:49:02,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-09 10:49:02,758 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 15 [2020-10-09 10:49:02,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:49:02,759 INFO L225 Difference]: With dead ends: 362 [2020-10-09 10:49:02,759 INFO L226 Difference]: Without dead ends: 358 [2020-10-09 10:49:02,759 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192 ImplicationChecksByTransitivity, 7.8s TimeCoverageRelationStatistics Valid=256, Invalid=555, Unknown=1, NotChecked=0, Total=812 [2020-10-09 10:49:02,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2020-10-09 10:49:02,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 254. [2020-10-09 10:49:02,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 254 states. [2020-10-09 10:49:02,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 622 transitions. [2020-10-09 10:49:02,763 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 622 transitions. Word has length 15 [2020-10-09 10:49:02,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:49:02,763 INFO L481 AbstractCegarLoop]: Abstraction has 254 states and 622 transitions. [2020-10-09 10:49:02,763 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-09 10:49:02,764 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 622 transitions. [2020-10-09 10:49:02,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-09 10:49:02,764 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:49:02,764 INFO L421 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:49:02,964 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 294 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable300 [2020-10-09 10:49:02,965 INFO L429 AbstractCegarLoop]: === Iteration 302 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:49:02,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:49:02,965 INFO L82 PathProgramCache]: Analyzing trace with hash 440518831, now seen corresponding path program 273 times [2020-10-09 10:49:02,965 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:49:02,966 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024407652] [2020-10-09 10:49:02,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:49:02,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:49:03,304 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:49:03,304 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024407652] [2020-10-09 10:49:03,304 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [466048692] [2020-10-09 10:49:03,304 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 295 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 295 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:49:03,351 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-09 10:49:03,352 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:49:03,352 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-09 10:49:03,353 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:49:03,982 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:49:03,982 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:49:03,982 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-09 10:49:03,982 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600149991] [2020-10-09 10:49:03,983 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-09 10:49:03,983 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:49:03,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-09 10:49:03,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=252, Unknown=0, NotChecked=0, Total=342 [2020-10-09 10:49:03,983 INFO L87 Difference]: Start difference. First operand 254 states and 622 transitions. Second operand 19 states. [2020-10-09 10:49:05,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:49:05,121 INFO L93 Difference]: Finished difference Result 348 states and 807 transitions. [2020-10-09 10:49:05,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-09 10:49:05,124 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 15 [2020-10-09 10:49:05,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:49:05,125 INFO L225 Difference]: With dead ends: 348 [2020-10-09 10:49:05,125 INFO L226 Difference]: Without dead ends: 345 [2020-10-09 10:49:05,126 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=263, Invalid=549, Unknown=0, NotChecked=0, Total=812 [2020-10-09 10:49:05,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2020-10-09 10:49:05,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 250. [2020-10-09 10:49:05,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 250 states. [2020-10-09 10:49:05,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 610 transitions. [2020-10-09 10:49:05,129 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 610 transitions. Word has length 15 [2020-10-09 10:49:05,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:49:05,129 INFO L481 AbstractCegarLoop]: Abstraction has 250 states and 610 transitions. [2020-10-09 10:49:05,129 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-09 10:49:05,129 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 610 transitions. [2020-10-09 10:49:05,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-09 10:49:05,130 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:49:05,130 INFO L421 BasicCegarLoop]: trace histogram [5, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:49:05,330 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 295 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable301 [2020-10-09 10:49:05,330 INFO L429 AbstractCegarLoop]: === Iteration 303 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:49:05,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:49:05,331 INFO L82 PathProgramCache]: Analyzing trace with hash 468194670, now seen corresponding path program 274 times [2020-10-09 10:49:05,331 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:49:05,331 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385621408] [2020-10-09 10:49:05,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:49:05,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:49:05,650 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:49:05,650 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385621408] [2020-10-09 10:49:05,650 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [796220164] [2020-10-09 10:49:05,650 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 296 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 296 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:49:05,689 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-09 10:49:05,689 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:49:05,690 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-09 10:49:05,690 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:49:06,313 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:49:06,314 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:49:06,314 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-09 10:49:06,314 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853825868] [2020-10-09 10:49:06,314 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-09 10:49:06,314 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:49:06,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-09 10:49:06,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=253, Unknown=0, NotChecked=0, Total=342 [2020-10-09 10:49:06,315 INFO L87 Difference]: Start difference. First operand 250 states and 610 transitions. Second operand 19 states. [2020-10-09 10:49:07,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:49:07,825 INFO L93 Difference]: Finished difference Result 322 states and 743 transitions. [2020-10-09 10:49:07,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-09 10:49:07,829 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 15 [2020-10-09 10:49:07,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:49:07,829 INFO L225 Difference]: With dead ends: 322 [2020-10-09 10:49:07,829 INFO L226 Difference]: Without dead ends: 320 [2020-10-09 10:49:07,830 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 239 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=312, Invalid=680, Unknown=0, NotChecked=0, Total=992 [2020-10-09 10:49:07,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2020-10-09 10:49:07,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 253. [2020-10-09 10:49:07,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 253 states. [2020-10-09 10:49:07,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 619 transitions. [2020-10-09 10:49:07,834 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 619 transitions. Word has length 15 [2020-10-09 10:49:07,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:49:07,834 INFO L481 AbstractCegarLoop]: Abstraction has 253 states and 619 transitions. [2020-10-09 10:49:07,834 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-09 10:49:07,834 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 619 transitions. [2020-10-09 10:49:07,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-09 10:49:07,835 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:49:07,835 INFO L421 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:49:08,035 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 296 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable302 [2020-10-09 10:49:08,036 INFO L429 AbstractCegarLoop]: === Iteration 304 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:49:08,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:49:08,036 INFO L82 PathProgramCache]: Analyzing trace with hash 468195631, now seen corresponding path program 275 times [2020-10-09 10:49:08,036 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:49:08,036 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626747665] [2020-10-09 10:49:08,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:49:08,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:49:08,361 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:49:08,362 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626747665] [2020-10-09 10:49:08,362 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [377036105] [2020-10-09 10:49:08,362 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 297 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 297 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:49:08,406 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-09 10:49:08,407 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:49:08,407 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-09 10:49:08,408 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:49:09,001 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:49:09,002 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:49:09,002 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-09 10:49:09,002 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504700138] [2020-10-09 10:49:09,002 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-09 10:49:09,002 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:49:09,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-09 10:49:09,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=254, Unknown=0, NotChecked=0, Total=342 [2020-10-09 10:49:09,003 INFO L87 Difference]: Start difference. First operand 253 states and 619 transitions. Second operand 19 states. [2020-10-09 10:49:09,980 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 41 [2020-10-09 10:49:10,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:49:10,471 INFO L93 Difference]: Finished difference Result 356 states and 822 transitions. [2020-10-09 10:49:10,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-09 10:49:10,475 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 15 [2020-10-09 10:49:10,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:49:10,475 INFO L225 Difference]: With dead ends: 356 [2020-10-09 10:49:10,476 INFO L226 Difference]: Without dead ends: 352 [2020-10-09 10:49:10,476 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=291, Invalid=639, Unknown=0, NotChecked=0, Total=930 [2020-10-09 10:49:10,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2020-10-09 10:49:10,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 253. [2020-10-09 10:49:10,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 253 states. [2020-10-09 10:49:10,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 619 transitions. [2020-10-09 10:49:10,480 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 619 transitions. Word has length 15 [2020-10-09 10:49:10,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:49:10,480 INFO L481 AbstractCegarLoop]: Abstraction has 253 states and 619 transitions. [2020-10-09 10:49:10,480 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-09 10:49:10,480 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 619 transitions. [2020-10-09 10:49:10,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-09 10:49:10,480 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:49:10,481 INFO L421 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:49:10,681 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 297 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable303 [2020-10-09 10:49:10,681 INFO L429 AbstractCegarLoop]: === Iteration 305 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:49:10,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:49:10,682 INFO L82 PathProgramCache]: Analyzing trace with hash 468224461, now seen corresponding path program 276 times [2020-10-09 10:49:10,682 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:49:10,682 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702306894] [2020-10-09 10:49:10,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:49:10,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:49:11,021 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:49:11,021 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702306894] [2020-10-09 10:49:11,021 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [301301297] [2020-10-09 10:49:11,022 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 298 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 298 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:49:11,066 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-09 10:49:11,066 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:49:11,067 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-09 10:49:11,067 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:49:25,380 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:49:25,381 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:49:25,381 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-09 10:49:25,381 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700649093] [2020-10-09 10:49:25,381 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-09 10:49:25,381 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:49:25,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-09 10:49:25,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=249, Unknown=4, NotChecked=0, Total=342 [2020-10-09 10:49:25,382 INFO L87 Difference]: Start difference. First operand 253 states and 619 transitions. Second operand 19 states. [2020-10-09 10:49:29,841 WARN L193 SmtUtils]: Spent 4.12 s on a formula simplification. DAG size of input: 41 DAG size of output: 37 [2020-10-09 10:49:52,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:49:52,531 INFO L93 Difference]: Finished difference Result 372 states and 857 transitions. [2020-10-09 10:49:52,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-09 10:49:52,534 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 15 [2020-10-09 10:49:52,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:49:52,535 INFO L225 Difference]: With dead ends: 372 [2020-10-09 10:49:52,535 INFO L226 Difference]: Without dead ends: 368 [2020-10-09 10:49:52,535 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 218 ImplicationChecksByTransitivity, 31.8s TimeCoverageRelationStatistics Valid=278, Invalid=582, Unknown=10, NotChecked=0, Total=870 [2020-10-09 10:49:52,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 368 states. [2020-10-09 10:49:52,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 368 to 254. [2020-10-09 10:49:52,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 254 states. [2020-10-09 10:49:52,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 622 transitions. [2020-10-09 10:49:52,539 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 622 transitions. Word has length 15 [2020-10-09 10:49:52,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:49:52,539 INFO L481 AbstractCegarLoop]: Abstraction has 254 states and 622 transitions. [2020-10-09 10:49:52,539 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-09 10:49:52,539 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 622 transitions. [2020-10-09 10:49:52,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-09 10:49:52,539 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:49:52,539 INFO L421 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:49:52,749 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 298 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable304 [2020-10-09 10:49:52,749 INFO L429 AbstractCegarLoop]: === Iteration 306 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:49:52,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:49:52,750 INFO L82 PathProgramCache]: Analyzing trace with hash 469119152, now seen corresponding path program 277 times [2020-10-09 10:49:52,750 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:49:52,750 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269072340] [2020-10-09 10:49:52,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:49:52,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:49:53,089 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:49:53,089 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269072340] [2020-10-09 10:49:53,090 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [723245656] [2020-10-09 10:49:53,090 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 299 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 299 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:49:53,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:49:53,131 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-09 10:49:53,131 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:49:55,802 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:49:55,802 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:49:55,802 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-09 10:49:55,802 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645697234] [2020-10-09 10:49:55,802 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-09 10:49:55,803 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:49:55,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-09 10:49:55,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=256, Unknown=0, NotChecked=0, Total=342 [2020-10-09 10:49:55,803 INFO L87 Difference]: Start difference. First operand 254 states and 622 transitions. Second operand 19 states. [2020-10-09 10:49:57,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:49:57,520 INFO L93 Difference]: Finished difference Result 370 states and 850 transitions. [2020-10-09 10:49:57,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-09 10:49:57,524 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 15 [2020-10-09 10:49:57,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:49:57,530 INFO L225 Difference]: With dead ends: 370 [2020-10-09 10:49:57,530 INFO L226 Difference]: Without dead ends: 354 [2020-10-09 10:49:57,530 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 262 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=310, Invalid=682, Unknown=0, NotChecked=0, Total=992 [2020-10-09 10:49:57,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2020-10-09 10:49:57,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 248. [2020-10-09 10:49:57,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 248 states. [2020-10-09 10:49:57,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 604 transitions. [2020-10-09 10:49:57,533 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 604 transitions. Word has length 15 [2020-10-09 10:49:57,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:49:57,533 INFO L481 AbstractCegarLoop]: Abstraction has 248 states and 604 transitions. [2020-10-09 10:49:57,533 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-09 10:49:57,534 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 604 transitions. [2020-10-09 10:49:57,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-09 10:49:57,534 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:49:57,534 INFO L421 BasicCegarLoop]: trace histogram [5, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:49:57,734 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable305,299 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:49:57,735 INFO L429 AbstractCegarLoop]: === Iteration 307 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:49:57,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:49:57,735 INFO L82 PathProgramCache]: Analyzing trace with hash 1327069200, now seen corresponding path program 278 times [2020-10-09 10:49:57,735 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:49:57,736 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919207489] [2020-10-09 10:49:57,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:49:57,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:49:58,029 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:49:58,029 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919207489] [2020-10-09 10:49:58,029 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [291255128] [2020-10-09 10:49:58,030 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 300 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 300 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:49:58,069 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-09 10:49:58,070 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:49:58,071 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-09 10:49:58,071 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:49:58,586 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:49:58,587 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:49:58,587 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-09 10:49:58,587 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707153272] [2020-10-09 10:49:58,587 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-09 10:49:58,588 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:49:58,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-09 10:49:58,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=262, Unknown=0, NotChecked=0, Total=342 [2020-10-09 10:49:58,588 INFO L87 Difference]: Start difference. First operand 248 states and 604 transitions. Second operand 19 states. [2020-10-09 10:49:59,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 10:49:59,999 INFO L93 Difference]: Finished difference Result 311 states and 720 transitions. [2020-10-09 10:50:00,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-09 10:50:00,002 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 15 [2020-10-09 10:50:00,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 10:50:00,003 INFO L225 Difference]: With dead ends: 311 [2020-10-09 10:50:00,003 INFO L226 Difference]: Without dead ends: 309 [2020-10-09 10:50:00,004 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 278 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=361, Invalid=829, Unknown=0, NotChecked=0, Total=1190 [2020-10-09 10:50:00,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2020-10-09 10:50:00,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 252. [2020-10-09 10:50:00,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 252 states. [2020-10-09 10:50:00,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 615 transitions. [2020-10-09 10:50:00,008 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 615 transitions. Word has length 15 [2020-10-09 10:50:00,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 10:50:00,008 INFO L481 AbstractCegarLoop]: Abstraction has 252 states and 615 transitions. [2020-10-09 10:50:00,008 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-09 10:50:00,008 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 615 transitions. [2020-10-09 10:50:00,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-09 10:50:00,009 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 10:50:00,009 INFO L421 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 10:50:00,209 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 300 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable306 [2020-10-09 10:50:00,209 INFO L429 AbstractCegarLoop]: === Iteration 308 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 10:50:00,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 10:50:00,210 INFO L82 PathProgramCache]: Analyzing trace with hash 1327070161, now seen corresponding path program 279 times [2020-10-09 10:50:00,210 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 10:50:00,210 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649761740] [2020-10-09 10:50:00,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 10:50:00,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 10:50:00,511 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:50:00,511 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649761740] [2020-10-09 10:50:00,511 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [663845822] [2020-10-09 10:50:00,512 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 301 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 301 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:50:00,552 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-09 10:50:00,552 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 10:50:00,553 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-09 10:50:00,553 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 10:50:01,074 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 10:50:01,074 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-09 10:50:01,075 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-09 10:50:01,075 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977526678] [2020-10-09 10:50:01,075 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-09 10:50:01,075 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 10:50:01,075 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-09 10:50:01,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=262, Unknown=0, NotChecked=0, Total=342 [2020-10-09 10:50:01,075 INFO L87 Difference]: Start difference. First operand 252 states and 615 transitions. Second operand 19 states. Received shutdown request... [2020-10-09 10:50:02,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-09 10:50:02,492 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable307,301 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 10:50:02,493 WARN L546 AbstractCegarLoop]: Verification canceled [2020-10-09 10:50:02,499 WARN L235 ceAbstractionStarter]: Timeout [2020-10-09 10:50:02,500 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.10 10:50:02 BasicIcfg [2020-10-09 10:50:02,500 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-09 10:50:02,501 INFO L168 Benchmark]: Toolchain (without parser) took 879426.92 ms. Allocated memory was 253.2 MB in the beginning and 231.7 MB in the end (delta: -21.5 MB). Free memory was 206.9 MB in the beginning and 190.4 MB in the end (delta: 16.5 MB). Peak memory consumption was 38.4 MB. Max. memory is 14.2 GB. [2020-10-09 10:50:02,501 INFO L168 Benchmark]: CDTParser took 1.33 ms. Allocated memory is still 253.2 MB. Free memory is still 229.6 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-09 10:50:02,502 INFO L168 Benchmark]: CACSL2BoogieTranslator took 614.20 ms. Allocated memory was 253.2 MB in the beginning and 319.3 MB in the end (delta: 66.1 MB). Free memory was 206.9 MB in the beginning and 275.3 MB in the end (delta: -68.4 MB). Peak memory consumption was 26.7 MB. Max. memory is 14.2 GB. [2020-10-09 10:50:02,502 INFO L168 Benchmark]: Boogie Procedure Inliner took 85.05 ms. Allocated memory is still 319.3 MB. Free memory was 275.3 MB in the beginning and 272.7 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-09 10:50:02,502 INFO L168 Benchmark]: Boogie Preprocessor took 60.75 ms. Allocated memory is still 319.3 MB. Free memory was 272.7 MB in the beginning and 270.2 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-09 10:50:02,503 INFO L168 Benchmark]: RCFGBuilder took 416.39 ms. Allocated memory is still 319.3 MB. Free memory was 270.2 MB in the beginning and 250.9 MB in the end (delta: 19.3 MB). Peak memory consumption was 19.3 MB. Max. memory is 14.2 GB. [2020-10-09 10:50:02,503 INFO L168 Benchmark]: TraceAbstraction took 878240.33 ms. Allocated memory was 319.3 MB in the beginning and 231.7 MB in the end (delta: -87.6 MB). Free memory was 250.9 MB in the beginning and 190.4 MB in the end (delta: 60.5 MB). Peak memory consumption was 16.4 MB. Max. memory is 14.2 GB. [2020-10-09 10:50:02,505 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.33 ms. Allocated memory is still 253.2 MB. Free memory is still 229.6 MB. There was no memory consumed. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 614.20 ms. Allocated memory was 253.2 MB in the beginning and 319.3 MB in the end (delta: 66.1 MB). Free memory was 206.9 MB in the beginning and 275.3 MB in the end (delta: -68.4 MB). Peak memory consumption was 26.7 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 85.05 ms. Allocated memory is still 319.3 MB. Free memory was 275.3 MB in the beginning and 272.7 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * Boogie Preprocessor took 60.75 ms. Allocated memory is still 319.3 MB. Free memory was 272.7 MB in the beginning and 270.2 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * RCFGBuilder took 416.39 ms. Allocated memory is still 319.3 MB. Free memory was 270.2 MB in the beginning and 250.9 MB in the end (delta: 19.3 MB). Peak memory consumption was 19.3 MB. Max. memory is 14.2 GB. * TraceAbstraction took 878240.33 ms. Allocated memory was 319.3 MB in the beginning and 231.7 MB in the end (delta: -87.6 MB). Free memory was 250.9 MB in the beginning and 190.4 MB in the end (delta: 60.5 MB). Peak memory consumption was 16.4 MB. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 697 VarBasedMoverChecksPositive, 12 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 12 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 20 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.4s, 59 PlacesBefore, 20 PlacesAfterwards, 57 TransitionsBefore, 16 TransitionsAfterwards, 1032 CoEnabledTransitionPairs, 5 FixpointIterations, 12 TrivialSequentialCompositions, 27 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 2 ChoiceCompositions, 50 TotalNumberOfCompositions, 943 MoverChecksTotal - TimeoutResultAtElement [Line: 711]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 711). Cancelled while BasicCegarLoop was constructing difference of abstraction (252states) and FLOYD_HOARE automaton (currently 18 states, 19 states before enhancement),while ReachableStatesComputation was computing reachable states (87 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 53 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: TIMEOUT, OverallTime: 878.1s, OverallIterations: 308, TraceHistogramMax: 6, AutomataDifference: 557.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.4s, HoareTripleCheckerStatistics: 4186 SDtfs, 32671 SDslu, 31276 SDs, 0 SdLazy, 22766 SolverSat, 9760 SolverUnsat, 62 SolverUnknown, 0 SolverNotchecked, 155.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9136 GetRequests, 1511 SyntacticMatches, 284 SemanticMatches, 7341 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 50803 ImplicationChecksByTransitivity, 613.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=282occurred in iteration=215, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.2s AutomataMinimizationTime, 307 MinimizatonAttempts, 20396 StatesRemovedByMinimization, 306 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 1.7s SsaConstructionTime, 4.7s SatisfiabilityAnalysisTime, 240.6s InterpolantComputationTime, 8062 NumberOfCodeBlocks, 8060 NumberOfCodeBlocksAsserted, 974 NumberOfCheckSat, 7454 ConstructedInterpolants, 54 QuantifiedInterpolants, 866593 SizeOfPredicates, 298 NumberOfNonLiveVariables, 27152 ConjunctsInSsa, 3123 ConjunctsInUnsatCore, 608 InterpolantComputations, 10 PerfectInterpolantSequences, 30/3640 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown