/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_longest-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-11af1e5 [2020-10-11 12:44:26,606 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-11 12:44:26,609 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-11 12:44:26,650 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-11 12:44:26,650 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-11 12:44:26,659 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-11 12:44:26,663 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-11 12:44:26,668 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-11 12:44:26,670 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-11 12:44:26,673 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-11 12:44:26,675 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-11 12:44:26,676 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-11 12:44:26,676 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-11 12:44:26,679 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-11 12:44:26,681 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-11 12:44:26,684 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-11 12:44:26,685 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-11 12:44:26,687 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-11 12:44:26,688 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-11 12:44:26,696 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-11 12:44:26,698 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-11 12:44:26,699 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-11 12:44:26,700 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-11 12:44:26,701 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-11 12:44:26,713 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-11 12:44:26,718 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-11 12:44:26,718 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-11 12:44:26,719 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-11 12:44:26,720 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-11 12:44:26,724 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-11 12:44:26,724 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-11 12:44:26,725 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-11 12:44:26,725 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-11 12:44:26,728 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-11 12:44:26,729 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-11 12:44:26,730 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-11 12:44:26,730 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-11 12:44:26,731 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-11 12:44:26,731 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-11 12:44:26,732 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-11 12:44:26,732 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-11 12:44:26,733 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 [2020-10-11 12:44:26,754 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-11 12:44:26,755 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-11 12:44:26,759 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-11 12:44:26,759 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-11 12:44:26,759 INFO L138 SettingsManager]: * Use SBE=true [2020-10-11 12:44:26,760 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-11 12:44:26,760 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-11 12:44:26,760 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-11 12:44:26,760 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-11 12:44:26,761 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-11 12:44:26,761 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-11 12:44:26,761 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-11 12:44:26,761 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-11 12:44:26,761 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-11 12:44:26,761 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-11 12:44:26,762 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-11 12:44:26,762 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-11 12:44:26,762 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-11 12:44:26,762 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-11 12:44:26,762 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-11 12:44:26,763 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-11 12:44:26,763 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-11 12:44:26,763 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-11 12:44:26,763 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-11 12:44:26,763 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-11 12:44:26,764 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-11 12:44:26,764 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-11 12:44:26,764 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-11 12:44:26,764 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-11 12:44:26,764 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-11 12:44:27,051 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-11 12:44:27,063 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-11 12:44:27,067 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-11 12:44:27,068 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-11 12:44:27,069 INFO L275 PluginConnector]: CDTParser initialized [2020-10-11 12:44:27,070 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/fib_bench_longest-2.i [2020-10-11 12:44:27,134 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7b8a9459c/bd44e1daaec74f948c9404710533923f/FLAGa1ee75de4 [2020-10-11 12:44:27,637 INFO L306 CDTParser]: Found 1 translation units. [2020-10-11 12:44:27,637 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/fib_bench_longest-2.i [2020-10-11 12:44:27,652 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7b8a9459c/bd44e1daaec74f948c9404710533923f/FLAGa1ee75de4 [2020-10-11 12:44:27,994 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7b8a9459c/bd44e1daaec74f948c9404710533923f [2020-10-11 12:44:28,003 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-11 12:44:28,005 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-11 12:44:28,006 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-11 12:44:28,006 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-11 12:44:28,010 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-11 12:44:28,011 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 12:44:27" (1/1) ... [2020-10-11 12:44:28,013 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c796de3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:44:28, skipping insertion in model container [2020-10-11 12:44:28,013 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 12:44:27" (1/1) ... [2020-10-11 12:44:28,021 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-11 12:44:28,067 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-11 12:44:28,466 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-11 12:44:28,476 INFO L203 MainTranslator]: Completed pre-run [2020-10-11 12:44:28,527 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-11 12:44:28,597 INFO L208 MainTranslator]: Completed translation [2020-10-11 12:44:28,598 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:44:28 WrapperNode [2020-10-11 12:44:28,598 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-11 12:44:28,599 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-11 12:44:28,599 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-11 12:44:28,599 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-11 12:44:28,608 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:44:28" (1/1) ... [2020-10-11 12:44:28,624 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:44:28" (1/1) ... [2020-10-11 12:44:28,646 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-11 12:44:28,646 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-11 12:44:28,647 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-11 12:44:28,647 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-11 12:44:28,654 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:44:28" (1/1) ... [2020-10-11 12:44:28,654 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:44:28" (1/1) ... [2020-10-11 12:44:28,657 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:44:28" (1/1) ... [2020-10-11 12:44:28,658 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:44:28" (1/1) ... [2020-10-11 12:44:28,663 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:44:28" (1/1) ... [2020-10-11 12:44:28,668 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:44:28" (1/1) ... [2020-10-11 12:44:28,670 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:44:28" (1/1) ... [2020-10-11 12:44:28,673 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-11 12:44:28,673 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-11 12:44:28,673 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-11 12:44:28,674 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-11 12:44:28,674 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:44:28" (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 [2020-10-11 12:44:28,735 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2020-10-11 12:44:28,736 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2020-10-11 12:44:28,736 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2020-10-11 12:44:28,736 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2020-10-11 12:44:28,736 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-11 12:44:28,736 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-11 12:44:28,736 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-11 12:44:28,737 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-11 12:44:28,737 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-11 12:44:28,737 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-11 12:44:28,737 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-11 12:44:28,739 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-11 12:44:29,065 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-11 12:44:29,065 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-10-11 12:44:29,067 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:44:29 BoogieIcfgContainer [2020-10-11 12:44:29,067 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-11 12:44:29,072 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-11 12:44:29,072 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-11 12:44:29,076 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-11 12:44:29,076 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 12:44:27" (1/3) ... [2020-10-11 12:44:29,077 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e5fff6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 12:44:29, skipping insertion in model container [2020-10-11 12:44:29,077 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:44:28" (2/3) ... [2020-10-11 12:44:29,077 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e5fff6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 12:44:29, skipping insertion in model container [2020-10-11 12:44:29,078 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:44:29" (3/3) ... [2020-10-11 12:44:29,081 INFO L111 eAbstractionObserver]: Analyzing ICFG fib_bench_longest-2.i [2020-10-11 12:44:29,090 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-11 12:44:29,090 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-11 12:44:29,098 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-11 12:44:29,099 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-11 12:44:29,123 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 12:44:29,123 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 12:44:29,124 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 12:44:29,124 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 12:44:29,124 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 12:44:29,124 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 12:44:29,125 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 12:44:29,125 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 12:44:29,125 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 12:44:29,126 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 12:44:29,126 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 12:44:29,126 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 12:44:29,126 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 12:44:29,127 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 12:44:29,127 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 12:44:29,127 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 12:44:29,128 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 12:44:29,128 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 12:44:29,128 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 12:44:29,128 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 12:44:29,129 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 12:44:29,129 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 12:44:29,129 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 12:44:29,130 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 12:44:29,130 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 12:44:29,130 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 12:44:29,130 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 12:44:29,131 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 12:44:29,131 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 12:44:29,131 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 12:44:29,135 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 12:44:29,135 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 12:44:29,136 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 12:44:29,136 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 12:44:29,136 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 12:44:29,136 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 12:44:29,146 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 12:44:29,146 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 12:44:29,147 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 12:44:29,147 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 12:44:29,147 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 12:44:29,147 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 12:44:29,160 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-10-11 12:44:29,177 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-11 12:44:29,177 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-11 12:44:29,178 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-11 12:44:29,178 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-11 12:44:29,178 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-11 12:44:29,178 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-11 12:44:29,178 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-11 12:44:29,178 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-11 12:44:29,189 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-11 12:44:29,192 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 59 places, 57 transitions, 124 flow [2020-10-11 12:44:29,195 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 59 places, 57 transitions, 124 flow [2020-10-11 12:44:29,197 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 59 places, 57 transitions, 124 flow [2020-10-11 12:44:29,236 INFO L129 PetriNetUnfolder]: 5/55 cut-off events. [2020-10-11 12:44:29,236 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-11 12:44:29,242 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. [2020-10-11 12:44:29,245 INFO L117 LiptonReduction]: Number of co-enabled transitions 1032 [2020-10-11 12:44:30,359 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 60 [2020-10-11 12:44:30,469 INFO L132 LiptonReduction]: Checked pairs total: 1052 [2020-10-11 12:44:30,469 INFO L134 LiptonReduction]: Total number of compositions: 50 [2020-10-11 12:44:30,476 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 20 places, 15 transitions, 40 flow [2020-10-11 12:44:30,486 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 44 states. [2020-10-11 12:44:30,488 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2020-10-11 12:44:30,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-10-11 12:44:30,494 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:44:30,495 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-10-11 12:44:30,496 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:44:30,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:44:30,500 INFO L82 PathProgramCache]: Analyzing trace with hash -1563716626, now seen corresponding path program 1 times [2020-10-11 12:44:30,508 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:44:30,509 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595306097] [2020-10-11 12:44:30,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:44:30,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:44:30,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:30,719 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595306097] [2020-10-11 12:44:30,720 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 12:44:30,720 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-11 12:44:30,721 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653920084] [2020-10-11 12:44:30,726 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-11 12:44:30,727 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:44:30,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-11 12:44:30,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-11 12:44:30,746 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 4 states. [2020-10-11 12:44:30,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:44:30,814 INFO L93 Difference]: Finished difference Result 83 states and 212 transitions. [2020-10-11 12:44:30,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-11 12:44:30,816 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2020-10-11 12:44:30,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:44:30,829 INFO L225 Difference]: With dead ends: 83 [2020-10-11 12:44:30,829 INFO L226 Difference]: Without dead ends: 54 [2020-10-11 12:44:30,831 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 [2020-10-11 12:44:30,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-11 12:44:30,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 50. [2020-10-11 12:44:30,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-10-11 12:44:30,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 120 transitions. [2020-10-11 12:44:30,873 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 120 transitions. Word has length 6 [2020-10-11 12:44:30,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:44:30,873 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 120 transitions. [2020-10-11 12:44:30,873 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-11 12:44:30,873 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 120 transitions. [2020-10-11 12:44:30,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-11 12:44:30,875 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:44:30,875 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:44:30,875 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-11 12:44:30,875 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:44:30,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:44:30,876 INFO L82 PathProgramCache]: Analyzing trace with hash 956938306, now seen corresponding path program 1 times [2020-10-11 12:44:30,876 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:44:30,876 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418380572] [2020-10-11 12:44:30,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:44:30,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:44:31,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:31,012 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418380572] [2020-10-11 12:44:31,012 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 12:44:31,013 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-11 12:44:31,013 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305775197] [2020-10-11 12:44:31,014 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-11 12:44:31,015 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:44:31,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-11 12:44:31,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-11 12:44:31,015 INFO L87 Difference]: Start difference. First operand 50 states and 120 transitions. Second operand 5 states. [2020-10-11 12:44:31,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:44:31,074 INFO L93 Difference]: Finished difference Result 80 states and 186 transitions. [2020-10-11 12:44:31,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-11 12:44:31,075 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2020-10-11 12:44:31,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:44:31,077 INFO L225 Difference]: With dead ends: 80 [2020-10-11 12:44:31,077 INFO L226 Difference]: Without dead ends: 75 [2020-10-11 12:44:31,078 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 [2020-10-11 12:44:31,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-10-11 12:44:31,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 55. [2020-10-11 12:44:31,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-11 12:44:31,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 136 transitions. [2020-10-11 12:44:31,088 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 136 transitions. Word has length 8 [2020-10-11 12:44:31,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:44:31,089 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 136 transitions. [2020-10-11 12:44:31,089 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-11 12:44:31,089 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 136 transitions. [2020-10-11 12:44:31,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-11 12:44:31,090 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:44:31,090 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:44:31,091 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-11 12:44:31,091 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:44:31,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:44:31,091 INFO L82 PathProgramCache]: Analyzing trace with hash 507192011, now seen corresponding path program 1 times [2020-10-11 12:44:31,092 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:44:31,092 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610340117] [2020-10-11 12:44:31,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:44:31,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:44:31,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:31,162 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610340117] [2020-10-11 12:44:31,162 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 12:44:31,162 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-11 12:44:31,163 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078277521] [2020-10-11 12:44:31,163 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-11 12:44:31,163 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:44:31,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-11 12:44:31,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-11 12:44:31,164 INFO L87 Difference]: Start difference. First operand 55 states and 136 transitions. Second operand 5 states. [2020-10-11 12:44:31,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:44:31,189 INFO L93 Difference]: Finished difference Result 73 states and 170 transitions. [2020-10-11 12:44:31,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-11 12:44:31,190 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2020-10-11 12:44:31,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:44:31,191 INFO L225 Difference]: With dead ends: 73 [2020-10-11 12:44:31,191 INFO L226 Difference]: Without dead ends: 70 [2020-10-11 12:44:31,192 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 [2020-10-11 12:44:31,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-10-11 12:44:31,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 64. [2020-10-11 12:44:31,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-10-11 12:44:31,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 152 transitions. [2020-10-11 12:44:31,201 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 152 transitions. Word has length 8 [2020-10-11 12:44:31,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:44:31,201 INFO L481 AbstractCegarLoop]: Abstraction has 64 states and 152 transitions. [2020-10-11 12:44:31,201 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-11 12:44:31,201 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 152 transitions. [2020-10-11 12:44:31,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-11 12:44:31,202 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:44:31,203 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:44:31,203 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-11 12:44:31,203 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:44:31,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:44:31,204 INFO L82 PathProgramCache]: Analyzing trace with hash 507214331, now seen corresponding path program 2 times [2020-10-11 12:44:31,204 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:44:31,204 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210534425] [2020-10-11 12:44:31,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:44:31,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:44:31,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:31,288 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210534425] [2020-10-11 12:44:31,289 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 12:44:31,289 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-11 12:44:31,289 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333307099] [2020-10-11 12:44:31,290 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-11 12:44:31,290 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:44:31,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-11 12:44:31,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-11 12:44:31,291 INFO L87 Difference]: Start difference. First operand 64 states and 152 transitions. Second operand 5 states. [2020-10-11 12:44:31,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:44:31,367 INFO L93 Difference]: Finished difference Result 86 states and 202 transitions. [2020-10-11 12:44:31,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-11 12:44:31,368 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2020-10-11 12:44:31,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:44:31,369 INFO L225 Difference]: With dead ends: 86 [2020-10-11 12:44:31,370 INFO L226 Difference]: Without dead ends: 80 [2020-10-11 12:44:31,370 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 [2020-10-11 12:44:31,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-10-11 12:44:31,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 66. [2020-10-11 12:44:31,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-10-11 12:44:31,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 157 transitions. [2020-10-11 12:44:31,378 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 157 transitions. Word has length 8 [2020-10-11 12:44:31,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:44:31,378 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 157 transitions. [2020-10-11 12:44:31,379 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-11 12:44:31,379 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 157 transitions. [2020-10-11 12:44:31,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-11 12:44:31,380 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:44:31,380 INFO L421 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:44:31,380 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-11 12:44:31,380 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:44:31,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:44:31,381 INFO L82 PathProgramCache]: Analyzing trace with hash -399661872, now seen corresponding path program 2 times [2020-10-11 12:44:31,381 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:44:31,381 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869508461] [2020-10-11 12:44:31,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:44:31,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:44:31,470 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:31,470 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869508461] [2020-10-11 12:44:31,470 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1227888940] [2020-10-11 12:44:31,471 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 [2020-10-11 12:44:31,528 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-11 12:44:31,529 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:44:31,531 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-11 12:44:31,536 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:44:31,622 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-11 12:44:31,643 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:31,644 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:44:31,644 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2020-10-11 12:44:31,644 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819127995] [2020-10-11 12:44:31,645 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-11 12:44:31,645 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:44:31,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-11 12:44:31,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-10-11 12:44:31,646 INFO L87 Difference]: Start difference. First operand 66 states and 157 transitions. Second operand 10 states. [2020-10-11 12:44:31,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:44:31,713 INFO L93 Difference]: Finished difference Result 101 states and 235 transitions. [2020-10-11 12:44:31,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-11 12:44:31,713 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 9 [2020-10-11 12:44:31,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:44:31,714 INFO L225 Difference]: With dead ends: 101 [2020-10-11 12:44:31,715 INFO L226 Difference]: Without dead ends: 96 [2020-10-11 12:44:31,715 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 [2020-10-11 12:44:31,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-10-11 12:44:31,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 71. [2020-10-11 12:44:31,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-10-11 12:44:31,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 173 transitions. [2020-10-11 12:44:31,723 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 173 transitions. Word has length 9 [2020-10-11 12:44:31,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:44:31,723 INFO L481 AbstractCegarLoop]: Abstraction has 71 states and 173 transitions. [2020-10-11 12:44:31,723 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-11 12:44:31,723 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 173 transitions. [2020-10-11 12:44:31,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-11 12:44:31,724 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:44:31,725 INFO L421 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:44:31,939 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:44:31,940 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:44:31,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:44:31,941 INFO L82 PathProgramCache]: Analyzing trace with hash -1456916488, now seen corresponding path program 3 times [2020-10-11 12:44:31,941 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:44:31,942 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847970768] [2020-10-11 12:44:31,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:44:31,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:44:32,010 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:32,010 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847970768] [2020-10-11 12:44:32,011 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [880903821] [2020-10-11 12:44:32,011 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 [2020-10-11 12:44:32,067 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-11 12:44:32,067 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:44:32,070 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-11 12:44:32,071 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:44:32,140 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:32,140 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:44:32,140 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2020-10-11 12:44:32,141 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970497795] [2020-10-11 12:44:32,142 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-11 12:44:32,142 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:44:32,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-11 12:44:32,143 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-11 12:44:32,144 INFO L87 Difference]: Start difference. First operand 71 states and 173 transitions. Second operand 9 states. [2020-10-11 12:44:32,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:44:32,175 INFO L93 Difference]: Finished difference Result 84 states and 199 transitions. [2020-10-11 12:44:32,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-11 12:44:32,175 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 9 [2020-10-11 12:44:32,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:44:32,176 INFO L225 Difference]: With dead ends: 84 [2020-10-11 12:44:32,176 INFO L226 Difference]: Without dead ends: 81 [2020-10-11 12:44:32,177 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 [2020-10-11 12:44:32,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-10-11 12:44:32,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 74. [2020-10-11 12:44:32,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-10-11 12:44:32,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 179 transitions. [2020-10-11 12:44:32,193 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 179 transitions. Word has length 9 [2020-10-11 12:44:32,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:44:32,193 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 179 transitions. [2020-10-11 12:44:32,193 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-11 12:44:32,193 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 179 transitions. [2020-10-11 12:44:32,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-11 12:44:32,195 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:44:32,196 INFO L421 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:44:32,396 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:44:32,397 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:44:32,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:44:32,398 INFO L82 PathProgramCache]: Analyzing trace with hash -1456224568, now seen corresponding path program 4 times [2020-10-11 12:44:32,398 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:44:32,399 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263315225] [2020-10-11 12:44:32,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:44:32,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:44:32,455 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:32,456 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263315225] [2020-10-11 12:44:32,456 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [980374652] [2020-10-11 12:44:32,456 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 [2020-10-11 12:44:32,524 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-11 12:44:32,524 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:44:32,525 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-11 12:44:32,526 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:44:32,586 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:32,586 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:44:32,586 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2020-10-11 12:44:32,587 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494048770] [2020-10-11 12:44:32,587 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-11 12:44:32,587 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:44:32,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-11 12:44:32,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-10-11 12:44:32,588 INFO L87 Difference]: Start difference. First operand 74 states and 179 transitions. Second operand 9 states. [2020-10-11 12:44:32,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:44:32,643 INFO L93 Difference]: Finished difference Result 90 states and 213 transitions. [2020-10-11 12:44:32,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-11 12:44:32,643 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 9 [2020-10-11 12:44:32,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:44:32,644 INFO L225 Difference]: With dead ends: 90 [2020-10-11 12:44:32,645 INFO L226 Difference]: Without dead ends: 87 [2020-10-11 12:44:32,645 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-10-11 12:44:32,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-10-11 12:44:32,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 76. [2020-10-11 12:44:32,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-10-11 12:44:32,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 186 transitions. [2020-10-11 12:44:32,652 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 186 transitions. Word has length 9 [2020-10-11 12:44:32,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:44:32,652 INFO L481 AbstractCegarLoop]: Abstraction has 76 states and 186 transitions. [2020-10-11 12:44:32,652 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-11 12:44:32,652 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 186 transitions. [2020-10-11 12:44:32,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-11 12:44:32,653 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:44:32,653 INFO L421 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:44:32,866 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:44:32,867 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:44:32,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:44:32,867 INFO L82 PathProgramCache]: Analyzing trace with hash -1456202248, now seen corresponding path program 5 times [2020-10-11 12:44:32,867 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:44:32,868 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361836739] [2020-10-11 12:44:32,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:44:32,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:44:32,916 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:32,917 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361836739] [2020-10-11 12:44:32,917 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1616336168] [2020-10-11 12:44:32,917 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 [2020-10-11 12:44:32,972 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-11 12:44:32,973 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:44:32,973 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-11 12:44:32,974 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:44:33,022 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-11 12:44:33,034 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:33,034 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:44:33,034 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2020-10-11 12:44:33,034 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099860261] [2020-10-11 12:44:33,035 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-11 12:44:33,035 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:44:33,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-11 12:44:33,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-11 12:44:33,036 INFO L87 Difference]: Start difference. First operand 76 states and 186 transitions. Second operand 9 states. [2020-10-11 12:44:33,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:44:33,124 INFO L93 Difference]: Finished difference Result 99 states and 237 transitions. [2020-10-11 12:44:33,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-11 12:44:33,125 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 9 [2020-10-11 12:44:33,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:44:33,126 INFO L225 Difference]: With dead ends: 99 [2020-10-11 12:44:33,126 INFO L226 Difference]: Without dead ends: 93 [2020-10-11 12:44:33,126 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 [2020-10-11 12:44:33,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-10-11 12:44:33,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 77. [2020-10-11 12:44:33,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-10-11 12:44:33,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 190 transitions. [2020-10-11 12:44:33,132 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 190 transitions. Word has length 9 [2020-10-11 12:44:33,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:44:33,133 INFO L481 AbstractCegarLoop]: Abstraction has 77 states and 190 transitions. [2020-10-11 12:44:33,133 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-11 12:44:33,133 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 190 transitions. [2020-10-11 12:44:33,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-11 12:44:33,134 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:44:33,134 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:44:33,346 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:44:33,347 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:44:33,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:44:33,348 INFO L82 PathProgramCache]: Analyzing trace with hash 483638869, now seen corresponding path program 1 times [2020-10-11 12:44:33,348 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:44:33,349 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562178960] [2020-10-11 12:44:33,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:44:33,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:44:33,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:33,425 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562178960] [2020-10-11 12:44:33,425 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 12:44:33,425 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-11 12:44:33,426 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141824561] [2020-10-11 12:44:33,426 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-11 12:44:33,426 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:44:33,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-11 12:44:33,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-11 12:44:33,428 INFO L87 Difference]: Start difference. First operand 77 states and 190 transitions. Second operand 6 states. [2020-10-11 12:44:33,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:44:33,459 INFO L93 Difference]: Finished difference Result 92 states and 220 transitions. [2020-10-11 12:44:33,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-11 12:44:33,460 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-10-11 12:44:33,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:44:33,461 INFO L225 Difference]: With dead ends: 92 [2020-10-11 12:44:33,461 INFO L226 Difference]: Without dead ends: 90 [2020-10-11 12:44:33,461 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 [2020-10-11 12:44:33,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-10-11 12:44:33,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 79. [2020-10-11 12:44:33,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-10-11 12:44:33,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 194 transitions. [2020-10-11 12:44:33,467 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 194 transitions. Word has length 10 [2020-10-11 12:44:33,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:44:33,467 INFO L481 AbstractCegarLoop]: Abstraction has 79 states and 194 transitions. [2020-10-11 12:44:33,468 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-11 12:44:33,468 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 194 transitions. [2020-10-11 12:44:33,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-11 12:44:33,469 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:44:33,469 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:44:33,469 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-11 12:44:33,470 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:44:33,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:44:33,470 INFO L82 PathProgramCache]: Analyzing trace with hash 484301959, now seen corresponding path program 2 times [2020-10-11 12:44:33,470 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:44:33,471 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959812199] [2020-10-11 12:44:33,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:44:33,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:44:33,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:33,585 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959812199] [2020-10-11 12:44:33,585 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 12:44:33,585 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-11 12:44:33,586 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172316353] [2020-10-11 12:44:33,586 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-11 12:44:33,586 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:44:33,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-11 12:44:33,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-11 12:44:33,587 INFO L87 Difference]: Start difference. First operand 79 states and 194 transitions. Second operand 6 states. [2020-10-11 12:44:33,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:44:33,625 INFO L93 Difference]: Finished difference Result 100 states and 234 transitions. [2020-10-11 12:44:33,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-11 12:44:33,625 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-10-11 12:44:33,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:44:33,626 INFO L225 Difference]: With dead ends: 100 [2020-10-11 12:44:33,627 INFO L226 Difference]: Without dead ends: 98 [2020-10-11 12:44:33,627 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 [2020-10-11 12:44:33,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-10-11 12:44:33,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 83. [2020-10-11 12:44:33,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-10-11 12:44:33,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 200 transitions. [2020-10-11 12:44:33,632 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 200 transitions. Word has length 10 [2020-10-11 12:44:33,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:44:33,632 INFO L481 AbstractCegarLoop]: Abstraction has 83 states and 200 transitions. [2020-10-11 12:44:33,632 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-11 12:44:33,633 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 200 transitions. [2020-10-11 12:44:33,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-11 12:44:33,633 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:44:33,633 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:44:33,634 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-11 12:44:33,634 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:44:33,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:44:33,634 INFO L82 PathProgramCache]: Analyzing trace with hash 484324279, now seen corresponding path program 3 times [2020-10-11 12:44:33,634 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:44:33,635 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326067138] [2020-10-11 12:44:33,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:44:33,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:44:33,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:33,680 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326067138] [2020-10-11 12:44:33,680 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 12:44:33,680 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-11 12:44:33,680 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418222585] [2020-10-11 12:44:33,681 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-11 12:44:33,681 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:44:33,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-11 12:44:33,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-11 12:44:33,681 INFO L87 Difference]: Start difference. First operand 83 states and 200 transitions. Second operand 6 states. [2020-10-11 12:44:33,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:44:33,747 INFO L93 Difference]: Finished difference Result 105 states and 246 transitions. [2020-10-11 12:44:33,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-11 12:44:33,747 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-10-11 12:44:33,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:44:33,748 INFO L225 Difference]: With dead ends: 105 [2020-10-11 12:44:33,749 INFO L226 Difference]: Without dead ends: 100 [2020-10-11 12:44:33,749 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 [2020-10-11 12:44:33,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-10-11 12:44:33,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 82. [2020-10-11 12:44:33,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-10-11 12:44:33,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 198 transitions. [2020-10-11 12:44:33,753 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 198 transitions. Word has length 10 [2020-10-11 12:44:33,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:44:33,754 INFO L481 AbstractCegarLoop]: Abstraction has 82 states and 198 transitions. [2020-10-11 12:44:33,754 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-11 12:44:33,754 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 198 transitions. [2020-10-11 12:44:33,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-11 12:44:33,755 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:44:33,755 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:44:33,755 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-11 12:44:33,755 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:44:33,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:44:33,756 INFO L82 PathProgramCache]: Analyzing trace with hash 484353109, now seen corresponding path program 4 times [2020-10-11 12:44:33,756 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:44:33,756 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273580937] [2020-10-11 12:44:33,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:44:33,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:44:33,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:33,802 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273580937] [2020-10-11 12:44:33,803 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 12:44:33,803 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-11 12:44:33,803 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350702896] [2020-10-11 12:44:33,804 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-11 12:44:33,804 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:44:33,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-11 12:44:33,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-11 12:44:33,804 INFO L87 Difference]: Start difference. First operand 82 states and 198 transitions. Second operand 6 states. [2020-10-11 12:44:33,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:44:33,877 INFO L93 Difference]: Finished difference Result 105 states and 246 transitions. [2020-10-11 12:44:33,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-11 12:44:33,878 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-10-11 12:44:33,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:44:33,879 INFO L225 Difference]: With dead ends: 105 [2020-10-11 12:44:33,879 INFO L226 Difference]: Without dead ends: 100 [2020-10-11 12:44:33,879 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 [2020-10-11 12:44:33,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-10-11 12:44:33,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 82. [2020-10-11 12:44:33,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-10-11 12:44:33,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 194 transitions. [2020-10-11 12:44:33,884 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 194 transitions. Word has length 10 [2020-10-11 12:44:33,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:44:33,884 INFO L481 AbstractCegarLoop]: Abstraction has 82 states and 194 transitions. [2020-10-11 12:44:33,884 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-11 12:44:33,885 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 194 transitions. [2020-10-11 12:44:33,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-11 12:44:33,885 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:44:33,885 INFO L421 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:44:33,886 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-11 12:44:33,886 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:44:33,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:44:33,886 INFO L82 PathProgramCache]: Analyzing trace with hash 495405570, now seen corresponding path program 3 times [2020-10-11 12:44:33,886 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:44:33,887 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988666217] [2020-10-11 12:44:33,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:44:33,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:44:33,946 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:33,946 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988666217] [2020-10-11 12:44:33,947 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [736651667] [2020-10-11 12:44:33,947 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 [2020-10-11 12:44:33,993 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-11 12:44:33,993 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:44:33,994 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-11 12:44:33,995 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:44:34,059 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-11 12:44:34,082 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:34,082 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:44:34,083 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-10-11 12:44:34,083 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826942233] [2020-10-11 12:44:34,083 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-11 12:44:34,084 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:44:34,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-11 12:44:34,084 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2020-10-11 12:44:34,085 INFO L87 Difference]: Start difference. First operand 82 states and 194 transitions. Second operand 12 states. [2020-10-11 12:44:34,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:44:34,191 INFO L93 Difference]: Finished difference Result 122 states and 284 transitions. [2020-10-11 12:44:34,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-11 12:44:34,192 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 10 [2020-10-11 12:44:34,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:44:34,194 INFO L225 Difference]: With dead ends: 122 [2020-10-11 12:44:34,194 INFO L226 Difference]: Without dead ends: 117 [2020-10-11 12:44:34,194 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 [2020-10-11 12:44:34,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2020-10-11 12:44:34,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 88. [2020-10-11 12:44:34,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-10-11 12:44:34,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 215 transitions. [2020-10-11 12:44:34,200 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 215 transitions. Word has length 10 [2020-10-11 12:44:34,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:44:34,201 INFO L481 AbstractCegarLoop]: Abstraction has 88 states and 215 transitions. [2020-10-11 12:44:34,201 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-11 12:44:34,201 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 215 transitions. [2020-10-11 12:44:34,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-11 12:44:34,202 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:44:34,202 INFO L421 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:44:34,414 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2020-10-11 12:44:34,414 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:44:34,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:44:34,415 INFO L82 PathProgramCache]: Analyzing trace with hash 2080229483, now seen corresponding path program 6 times [2020-10-11 12:44:34,415 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:44:34,415 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736651970] [2020-10-11 12:44:34,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:44:34,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:44:34,492 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:34,493 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736651970] [2020-10-11 12:44:34,493 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [160252179] [2020-10-11 12:44:34,493 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 [2020-10-11 12:44:34,542 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-10-11 12:44:34,542 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:44:34,543 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-11 12:44:34,544 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:44:34,629 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:34,629 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:44:34,630 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-11 12:44:34,630 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539866658] [2020-10-11 12:44:34,630 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-11 12:44:34,630 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:44:34,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-11 12:44:34,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-11 12:44:34,631 INFO L87 Difference]: Start difference. First operand 88 states and 215 transitions. Second operand 11 states. [2020-10-11 12:44:34,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:44:34,663 INFO L93 Difference]: Finished difference Result 108 states and 255 transitions. [2020-10-11 12:44:34,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-11 12:44:34,664 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 10 [2020-10-11 12:44:34,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:44:34,665 INFO L225 Difference]: With dead ends: 108 [2020-10-11 12:44:34,665 INFO L226 Difference]: Without dead ends: 105 [2020-10-11 12:44:34,666 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 [2020-10-11 12:44:34,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2020-10-11 12:44:34,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 91. [2020-10-11 12:44:34,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-10-11 12:44:34,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 221 transitions. [2020-10-11 12:44:34,670 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 221 transitions. Word has length 10 [2020-10-11 12:44:34,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:44:34,670 INFO L481 AbstractCegarLoop]: Abstraction has 91 states and 221 transitions. [2020-10-11 12:44:34,670 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-11 12:44:34,671 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 221 transitions. [2020-10-11 12:44:34,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-11 12:44:34,671 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:44:34,671 INFO L421 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:44:34,882 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:44:34,882 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:44:34,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:44:34,883 INFO L82 PathProgramCache]: Analyzing trace with hash 2101679003, now seen corresponding path program 7 times [2020-10-11 12:44:34,883 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:44:34,884 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710090721] [2020-10-11 12:44:34,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:44:34,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:44:34,951 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:34,952 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710090721] [2020-10-11 12:44:34,952 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [951604241] [2020-10-11 12:44:34,952 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 [2020-10-11 12:44:35,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:44:35,006 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-11 12:44:35,007 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:44:35,080 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:35,080 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:44:35,081 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-11 12:44:35,081 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565142969] [2020-10-11 12:44:35,082 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-11 12:44:35,082 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:44:35,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-11 12:44:35,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-10-11 12:44:35,083 INFO L87 Difference]: Start difference. First operand 91 states and 221 transitions. Second operand 11 states. [2020-10-11 12:44:35,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:44:35,149 INFO L93 Difference]: Finished difference Result 116 states and 270 transitions. [2020-10-11 12:44:35,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-11 12:44:35,150 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 10 [2020-10-11 12:44:35,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:44:35,152 INFO L225 Difference]: With dead ends: 116 [2020-10-11 12:44:35,152 INFO L226 Difference]: Without dead ends: 113 [2020-10-11 12:44:35,153 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 [2020-10-11 12:44:35,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-10-11 12:44:35,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 92. [2020-10-11 12:44:35,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-10-11 12:44:35,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 223 transitions. [2020-10-11 12:44:35,158 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 223 transitions. Word has length 10 [2020-10-11 12:44:35,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:44:35,158 INFO L481 AbstractCegarLoop]: Abstraction has 92 states and 223 transitions. [2020-10-11 12:44:35,159 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-11 12:44:35,159 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 223 transitions. [2020-10-11 12:44:35,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-11 12:44:35,159 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:44:35,160 INFO L421 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:44:35,371 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2020-10-11 12:44:35,372 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:44:35,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:44:35,373 INFO L82 PathProgramCache]: Analyzing trace with hash 2102370923, now seen corresponding path program 8 times [2020-10-11 12:44:35,373 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:44:35,374 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246273249] [2020-10-11 12:44:35,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:44:35,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:44:35,453 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:35,453 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246273249] [2020-10-11 12:44:35,454 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [727343444] [2020-10-11 12:44:35,454 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 [2020-10-11 12:44:35,517 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-11 12:44:35,518 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:44:35,518 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-11 12:44:35,520 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:44:35,610 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:35,610 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:44:35,610 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-11 12:44:35,611 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217610443] [2020-10-11 12:44:35,611 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-11 12:44:35,611 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:44:35,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-11 12:44:35,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-10-11 12:44:35,612 INFO L87 Difference]: Start difference. First operand 92 states and 223 transitions. Second operand 11 states. [2020-10-11 12:44:35,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:44:35,691 INFO L93 Difference]: Finished difference Result 115 states and 270 transitions. [2020-10-11 12:44:35,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-11 12:44:35,691 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 10 [2020-10-11 12:44:35,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:44:35,693 INFO L225 Difference]: With dead ends: 115 [2020-10-11 12:44:35,693 INFO L226 Difference]: Without dead ends: 112 [2020-10-11 12:44:35,694 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 [2020-10-11 12:44:35,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-10-11 12:44:35,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 94. [2020-10-11 12:44:35,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-10-11 12:44:35,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 230 transitions. [2020-10-11 12:44:35,699 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 230 transitions. Word has length 10 [2020-10-11 12:44:35,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:44:35,700 INFO L481 AbstractCegarLoop]: Abstraction has 94 states and 230 transitions. [2020-10-11 12:44:35,700 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-11 12:44:35,700 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 230 transitions. [2020-10-11 12:44:35,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-11 12:44:35,700 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:44:35,701 INFO L421 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:44:35,913 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2020-10-11 12:44:35,914 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:44:35,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:44:35,915 INFO L82 PathProgramCache]: Analyzing trace with hash 2102393243, now seen corresponding path program 9 times [2020-10-11 12:44:35,915 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:44:35,915 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111045620] [2020-10-11 12:44:35,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:44:35,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:44:35,971 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:35,972 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111045620] [2020-10-11 12:44:35,972 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2142333715] [2020-10-11 12:44:35,972 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 [2020-10-11 12:44:36,020 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-11 12:44:36,020 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:44:36,021 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-11 12:44:36,021 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:44:36,086 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-11 12:44:36,097 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:36,097 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:44:36,097 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-11 12:44:36,098 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142858727] [2020-10-11 12:44:36,098 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-11 12:44:36,098 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:44:36,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-11 12:44:36,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-11 12:44:36,099 INFO L87 Difference]: Start difference. First operand 94 states and 230 transitions. Second operand 11 states. [2020-10-11 12:44:36,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:44:36,198 INFO L93 Difference]: Finished difference Result 124 states and 294 transitions. [2020-10-11 12:44:36,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-11 12:44:36,198 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 10 [2020-10-11 12:44:36,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:44:36,199 INFO L225 Difference]: With dead ends: 124 [2020-10-11 12:44:36,199 INFO L226 Difference]: Without dead ends: 118 [2020-10-11 12:44:36,200 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 [2020-10-11 12:44:36,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2020-10-11 12:44:36,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 94. [2020-10-11 12:44:36,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-10-11 12:44:36,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 232 transitions. [2020-10-11 12:44:36,204 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 232 transitions. Word has length 10 [2020-10-11 12:44:36,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:44:36,204 INFO L481 AbstractCegarLoop]: Abstraction has 94 states and 232 transitions. [2020-10-11 12:44:36,204 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-11 12:44:36,204 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 232 transitions. [2020-10-11 12:44:36,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-11 12:44:36,205 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:44:36,205 INFO L421 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:44:36,414 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2020-10-11 12:44:36,414 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:44:36,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:44:36,415 INFO L82 PathProgramCache]: Analyzing trace with hash 2107902445, now seen corresponding path program 5 times [2020-10-11 12:44:36,415 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:44:36,416 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025362515] [2020-10-11 12:44:36,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:44:36,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:44:36,476 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:36,477 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025362515] [2020-10-11 12:44:36,477 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [963503166] [2020-10-11 12:44:36,477 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 [2020-10-11 12:44:36,534 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-11 12:44:36,535 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:44:36,536 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-11 12:44:36,537 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:44:36,648 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:36,648 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:44:36,648 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-11 12:44:36,649 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775083864] [2020-10-11 12:44:36,650 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-11 12:44:36,650 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:44:36,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-11 12:44:36,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-11 12:44:36,651 INFO L87 Difference]: Start difference. First operand 94 states and 232 transitions. Second operand 11 states. [2020-10-11 12:44:36,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:44:36,698 INFO L93 Difference]: Finished difference Result 113 states and 270 transitions. [2020-10-11 12:44:36,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-11 12:44:36,699 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 11 [2020-10-11 12:44:36,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:44:36,700 INFO L225 Difference]: With dead ends: 113 [2020-10-11 12:44:36,700 INFO L226 Difference]: Without dead ends: 111 [2020-10-11 12:44:36,700 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 [2020-10-11 12:44:36,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-10-11 12:44:36,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 96. [2020-10-11 12:44:36,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-10-11 12:44:36,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 238 transitions. [2020-10-11 12:44:36,705 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 238 transitions. Word has length 11 [2020-10-11 12:44:36,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:44:36,705 INFO L481 AbstractCegarLoop]: Abstraction has 96 states and 238 transitions. [2020-10-11 12:44:36,706 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-11 12:44:36,706 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 238 transitions. [2020-10-11 12:44:36,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-11 12:44:36,707 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:44:36,707 INFO L421 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:44:36,918 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-10-11 12:44:36,918 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:44:36,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:44:36,920 INFO L82 PathProgramCache]: Analyzing trace with hash 2107903406, now seen corresponding path program 6 times [2020-10-11 12:44:36,920 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:44:36,921 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075459206] [2020-10-11 12:44:36,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:44:36,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:44:36,996 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:36,997 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075459206] [2020-10-11 12:44:36,997 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [762639771] [2020-10-11 12:44:36,997 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 [2020-10-11 12:44:37,061 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-10-11 12:44:37,061 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:44:37,062 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-11 12:44:37,064 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:44:37,145 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:37,145 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:44:37,146 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-11 12:44:37,146 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641024571] [2020-10-11 12:44:37,146 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-11 12:44:37,147 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:44:37,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-11 12:44:37,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-11 12:44:37,148 INFO L87 Difference]: Start difference. First operand 96 states and 238 transitions. Second operand 11 states. [2020-10-11 12:44:37,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:44:37,214 INFO L93 Difference]: Finished difference Result 118 states and 280 transitions. [2020-10-11 12:44:37,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-11 12:44:37,214 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 11 [2020-10-11 12:44:37,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:44:37,215 INFO L225 Difference]: With dead ends: 118 [2020-10-11 12:44:37,215 INFO L226 Difference]: Without dead ends: 116 [2020-10-11 12:44:37,216 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 [2020-10-11 12:44:37,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-10-11 12:44:37,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 97. [2020-10-11 12:44:37,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-10-11 12:44:37,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 239 transitions. [2020-10-11 12:44:37,220 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 239 transitions. Word has length 11 [2020-10-11 12:44:37,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:44:37,221 INFO L481 AbstractCegarLoop]: Abstraction has 97 states and 239 transitions. [2020-10-11 12:44:37,221 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-11 12:44:37,221 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 239 transitions. [2020-10-11 12:44:37,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-11 12:44:37,221 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:44:37,222 INFO L421 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:44:37,423 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,12 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:44:37,424 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:44:37,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:44:37,425 INFO L82 PathProgramCache]: Analyzing trace with hash 2107932236, now seen corresponding path program 7 times [2020-10-11 12:44:37,425 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:44:37,425 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866553819] [2020-10-11 12:44:37,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:44:37,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:44:37,486 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:37,487 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866553819] [2020-10-11 12:44:37,487 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1477979255] [2020-10-11 12:44:37,487 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 [2020-10-11 12:44:37,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:44:37,526 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-11 12:44:37,527 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:44:37,615 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:37,615 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:44:37,615 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-11 12:44:37,616 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836845626] [2020-10-11 12:44:37,616 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-11 12:44:37,616 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:44:37,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-11 12:44:37,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-11 12:44:37,617 INFO L87 Difference]: Start difference. First operand 97 states and 239 transitions. Second operand 11 states. [2020-10-11 12:44:37,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:44:37,711 INFO L93 Difference]: Finished difference Result 119 states and 282 transitions. [2020-10-11 12:44:37,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-11 12:44:37,712 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 11 [2020-10-11 12:44:37,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:44:37,713 INFO L225 Difference]: With dead ends: 119 [2020-10-11 12:44:37,713 INFO L226 Difference]: Without dead ends: 117 [2020-10-11 12:44:37,713 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 [2020-10-11 12:44:37,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2020-10-11 12:44:37,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 98. [2020-10-11 12:44:37,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-10-11 12:44:37,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 241 transitions. [2020-10-11 12:44:37,719 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 241 transitions. Word has length 11 [2020-10-11 12:44:37,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:44:37,719 INFO L481 AbstractCegarLoop]: Abstraction has 98 states and 241 transitions. [2020-10-11 12:44:37,719 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-11 12:44:37,719 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 241 transitions. [2020-10-11 12:44:37,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-11 12:44:37,720 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:44:37,720 INFO L421 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:44:37,921 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,13 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:44:37,921 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:44:37,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:44:37,922 INFO L82 PathProgramCache]: Analyzing trace with hash 2128458235, now seen corresponding path program 8 times [2020-10-11 12:44:37,922 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:44:37,923 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93312505] [2020-10-11 12:44:37,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:44:37,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:44:37,995 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:37,996 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93312505] [2020-10-11 12:44:37,996 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1066273788] [2020-10-11 12:44:37,996 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 [2020-10-11 12:44:38,057 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-11 12:44:38,057 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:44:38,058 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-11 12:44:38,059 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:44:38,148 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:38,148 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:44:38,148 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-11 12:44:38,148 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232613005] [2020-10-11 12:44:38,148 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-11 12:44:38,149 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:44:38,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-11 12:44:38,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-10-11 12:44:38,149 INFO L87 Difference]: Start difference. First operand 98 states and 241 transitions. Second operand 11 states. [2020-10-11 12:44:38,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:44:38,211 INFO L93 Difference]: Finished difference Result 122 states and 288 transitions. [2020-10-11 12:44:38,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-11 12:44:38,214 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 11 [2020-10-11 12:44:38,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:44:38,216 INFO L225 Difference]: With dead ends: 122 [2020-10-11 12:44:38,216 INFO L226 Difference]: Without dead ends: 120 [2020-10-11 12:44:38,216 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 [2020-10-11 12:44:38,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2020-10-11 12:44:38,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 100. [2020-10-11 12:44:38,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-10-11 12:44:38,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 247 transitions. [2020-10-11 12:44:38,220 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 247 transitions. Word has length 11 [2020-10-11 12:44:38,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:44:38,221 INFO L481 AbstractCegarLoop]: Abstraction has 100 states and 247 transitions. [2020-10-11 12:44:38,221 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-11 12:44:38,221 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 247 transitions. [2020-10-11 12:44:38,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-11 12:44:38,221 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:44:38,221 INFO L421 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:44:38,429 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2020-10-11 12:44:38,430 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:44:38,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:44:38,430 INFO L82 PathProgramCache]: Analyzing trace with hash 2128459196, now seen corresponding path program 9 times [2020-10-11 12:44:38,431 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:44:38,431 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568705705] [2020-10-11 12:44:38,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:44:38,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:44:38,486 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:38,486 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568705705] [2020-10-11 12:44:38,486 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2117936257] [2020-10-11 12:44:38,486 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 [2020-10-11 12:44:38,530 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-11 12:44:38,530 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:44:38,530 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-11 12:44:38,532 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:44:38,603 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:38,603 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:44:38,603 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-11 12:44:38,604 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137260123] [2020-10-11 12:44:38,604 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-11 12:44:38,604 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:44:38,604 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-11 12:44:38,604 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-11 12:44:38,605 INFO L87 Difference]: Start difference. First operand 100 states and 247 transitions. Second operand 11 states. [2020-10-11 12:44:38,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:44:38,707 INFO L93 Difference]: Finished difference Result 123 states and 290 transitions. [2020-10-11 12:44:38,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-11 12:44:38,707 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 11 [2020-10-11 12:44:38,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:44:38,708 INFO L225 Difference]: With dead ends: 123 [2020-10-11 12:44:38,708 INFO L226 Difference]: Without dead ends: 121 [2020-10-11 12:44:38,709 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2020-10-11 12:44:38,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2020-10-11 12:44:38,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 99. [2020-10-11 12:44:38,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-10-11 12:44:38,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 243 transitions. [2020-10-11 12:44:38,715 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 243 transitions. Word has length 11 [2020-10-11 12:44:38,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:44:38,715 INFO L481 AbstractCegarLoop]: Abstraction has 99 states and 243 transitions. [2020-10-11 12:44:38,715 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-11 12:44:38,715 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 243 transitions. [2020-10-11 12:44:38,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-11 12:44:38,716 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:44:38,716 INFO L421 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:44:38,927 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:44:38,928 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:44:38,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:44:38,928 INFO L82 PathProgramCache]: Analyzing trace with hash 2129121325, now seen corresponding path program 10 times [2020-10-11 12:44:38,929 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:44:38,929 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102467806] [2020-10-11 12:44:38,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:44:38,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:44:38,986 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:38,986 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102467806] [2020-10-11 12:44:38,986 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1165242692] [2020-10-11 12:44:38,986 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 [2020-10-11 12:44:39,026 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-11 12:44:39,027 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:44:39,027 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-11 12:44:39,028 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:44:39,105 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:39,105 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:44:39,105 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-11 12:44:39,106 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699265293] [2020-10-11 12:44:39,106 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-11 12:44:39,106 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:44:39,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-11 12:44:39,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-10-11 12:44:39,107 INFO L87 Difference]: Start difference. First operand 99 states and 243 transitions. Second operand 11 states. [2020-10-11 12:44:39,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:44:39,197 INFO L93 Difference]: Finished difference Result 123 states and 287 transitions. [2020-10-11 12:44:39,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-11 12:44:39,197 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 11 [2020-10-11 12:44:39,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:44:39,199 INFO L225 Difference]: With dead ends: 123 [2020-10-11 12:44:39,199 INFO L226 Difference]: Without dead ends: 121 [2020-10-11 12:44:39,199 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 [2020-10-11 12:44:39,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2020-10-11 12:44:39,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 103. [2020-10-11 12:44:39,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-10-11 12:44:39,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 249 transitions. [2020-10-11 12:44:39,207 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 249 transitions. Word has length 11 [2020-10-11 12:44:39,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:44:39,208 INFO L481 AbstractCegarLoop]: Abstraction has 103 states and 249 transitions. [2020-10-11 12:44:39,208 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-11 12:44:39,208 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 249 transitions. [2020-10-11 12:44:39,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-11 12:44:39,209 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:44:39,209 INFO L421 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:44:39,419 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2020-10-11 12:44:39,420 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:44:39,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:44:39,420 INFO L82 PathProgramCache]: Analyzing trace with hash 2129143645, now seen corresponding path program 11 times [2020-10-11 12:44:39,420 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:44:39,421 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82187045] [2020-10-11 12:44:39,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:44:39,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:44:39,469 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:39,469 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82187045] [2020-10-11 12:44:39,469 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [479504039] [2020-10-11 12:44:39,469 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 [2020-10-11 12:44:39,513 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-11 12:44:39,513 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:44:39,514 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-11 12:44:39,515 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:44:39,581 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-11 12:44:39,623 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:39,624 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:44:39,624 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-11 12:44:39,624 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144894005] [2020-10-11 12:44:39,625 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-11 12:44:39,625 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:44:39,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-11 12:44:39,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-11 12:44:39,625 INFO L87 Difference]: Start difference. First operand 103 states and 249 transitions. Second operand 11 states. [2020-10-11 12:44:39,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:44:39,801 INFO L93 Difference]: Finished difference Result 133 states and 314 transitions. [2020-10-11 12:44:39,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-11 12:44:39,802 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 11 [2020-10-11 12:44:39,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:44:39,804 INFO L225 Difference]: With dead ends: 133 [2020-10-11 12:44:39,804 INFO L226 Difference]: Without dead ends: 128 [2020-10-11 12:44:39,805 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=96, Invalid=176, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:44:39,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2020-10-11 12:44:39,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 102. [2020-10-11 12:44:39,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2020-10-11 12:44:39,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 247 transitions. [2020-10-11 12:44:39,809 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 247 transitions. Word has length 11 [2020-10-11 12:44:39,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:44:39,809 INFO L481 AbstractCegarLoop]: Abstraction has 102 states and 247 transitions. [2020-10-11 12:44:39,809 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-11 12:44:39,809 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 247 transitions. [2020-10-11 12:44:39,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-11 12:44:39,810 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:44:39,810 INFO L421 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:44:40,011 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:44:40,012 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:44:40,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:44:40,012 INFO L82 PathProgramCache]: Analyzing trace with hash 2129151116, now seen corresponding path program 12 times [2020-10-11 12:44:40,013 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:44:40,013 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888432588] [2020-10-11 12:44:40,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:44:40,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:44:40,109 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:40,110 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888432588] [2020-10-11 12:44:40,110 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1100668831] [2020-10-11 12:44:40,110 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 [2020-10-11 12:44:40,163 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-10-11 12:44:40,163 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:44:40,164 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-11 12:44:40,165 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:44:40,255 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:40,255 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:44:40,256 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-11 12:44:40,256 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916543597] [2020-10-11 12:44:40,256 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-11 12:44:40,256 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:44:40,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-11 12:44:40,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-11 12:44:40,257 INFO L87 Difference]: Start difference. First operand 102 states and 247 transitions. Second operand 11 states. [2020-10-11 12:44:40,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:44:40,381 INFO L93 Difference]: Finished difference Result 127 states and 298 transitions. [2020-10-11 12:44:40,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-11 12:44:40,381 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 11 [2020-10-11 12:44:40,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:44:40,382 INFO L225 Difference]: With dead ends: 127 [2020-10-11 12:44:40,382 INFO L226 Difference]: Without dead ends: 125 [2020-10-11 12:44:40,383 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 [2020-10-11 12:44:40,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2020-10-11 12:44:40,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 104. [2020-10-11 12:44:40,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-10-11 12:44:40,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 254 transitions. [2020-10-11 12:44:40,387 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 254 transitions. Word has length 11 [2020-10-11 12:44:40,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:44:40,387 INFO L481 AbstractCegarLoop]: Abstraction has 104 states and 254 transitions. [2020-10-11 12:44:40,387 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-11 12:44:40,387 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 254 transitions. [2020-10-11 12:44:40,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-11 12:44:40,388 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:44:40,388 INFO L421 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:44:40,597 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2020-10-11 12:44:40,598 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:44:40,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:44:40,599 INFO L82 PathProgramCache]: Analyzing trace with hash 2129172475, now seen corresponding path program 13 times [2020-10-11 12:44:40,599 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:44:40,600 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071852905] [2020-10-11 12:44:40,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:44:40,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:44:40,647 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:40,647 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071852905] [2020-10-11 12:44:40,648 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1225984202] [2020-10-11 12:44:40,648 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 [2020-10-11 12:44:40,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:44:40,686 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-11 12:44:40,687 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:44:40,747 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-11 12:44:40,769 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:40,769 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:44:40,769 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-11 12:44:40,770 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545058483] [2020-10-11 12:44:40,770 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-11 12:44:40,770 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:44:40,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-11 12:44:40,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-11 12:44:40,770 INFO L87 Difference]: Start difference. First operand 104 states and 254 transitions. Second operand 11 states. [2020-10-11 12:44:40,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:44:40,971 INFO L93 Difference]: Finished difference Result 141 states and 334 transitions. [2020-10-11 12:44:40,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-11 12:44:40,972 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 11 [2020-10-11 12:44:40,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:44:40,973 INFO L225 Difference]: With dead ends: 141 [2020-10-11 12:44:40,973 INFO L226 Difference]: Without dead ends: 136 [2020-10-11 12:44:40,974 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=131, Invalid=249, Unknown=0, NotChecked=0, Total=380 [2020-10-11 12:44:40,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-10-11 12:44:40,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 104. [2020-10-11 12:44:40,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-10-11 12:44:40,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 254 transitions. [2020-10-11 12:44:40,979 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 254 transitions. Word has length 11 [2020-10-11 12:44:40,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:44:40,979 INFO L481 AbstractCegarLoop]: Abstraction has 104 states and 254 transitions. [2020-10-11 12:44:40,979 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-11 12:44:40,979 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 254 transitions. [2020-10-11 12:44:40,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-11 12:44:40,980 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:44:40,980 INFO L421 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:44:41,192 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2020-10-11 12:44:41,193 INFO L429 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:44:41,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:44:41,194 INFO L82 PathProgramCache]: Analyzing trace with hash 2129173436, now seen corresponding path program 14 times [2020-10-11 12:44:41,194 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:44:41,194 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749688071] [2020-10-11 12:44:41,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:44:41,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:44:41,240 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:41,240 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749688071] [2020-10-11 12:44:41,240 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [612886534] [2020-10-11 12:44:41,241 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 [2020-10-11 12:44:41,298 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-11 12:44:41,299 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:44:41,299 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-11 12:44:41,300 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:44:41,344 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-11 12:44:41,355 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:41,355 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:44:41,355 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-11 12:44:41,356 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484737365] [2020-10-11 12:44:41,356 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-11 12:44:41,356 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:44:41,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-11 12:44:41,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-11 12:44:41,357 INFO L87 Difference]: Start difference. First operand 104 states and 254 transitions. Second operand 11 states. [2020-10-11 12:44:41,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:44:41,501 INFO L93 Difference]: Finished difference Result 136 states and 319 transitions. [2020-10-11 12:44:41,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-11 12:44:41,501 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 11 [2020-10-11 12:44:41,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:44:41,502 INFO L225 Difference]: With dead ends: 136 [2020-10-11 12:44:41,502 INFO L226 Difference]: Without dead ends: 131 [2020-10-11 12:44:41,503 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 [2020-10-11 12:44:41,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2020-10-11 12:44:41,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 101. [2020-10-11 12:44:41,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-10-11 12:44:41,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 245 transitions. [2020-10-11 12:44:41,506 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 245 transitions. Word has length 11 [2020-10-11 12:44:41,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:44:41,507 INFO L481 AbstractCegarLoop]: Abstraction has 101 states and 245 transitions. [2020-10-11 12:44:41,507 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-11 12:44:41,507 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 245 transitions. [2020-10-11 12:44:41,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-11 12:44:41,507 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:44:41,508 INFO L421 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:44:41,717 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2020-10-11 12:44:41,718 INFO L429 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:44:41,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:44:41,718 INFO L82 PathProgramCache]: Analyzing trace with hash 2129381756, now seen corresponding path program 15 times [2020-10-11 12:44:41,718 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:44:41,719 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117212593] [2020-10-11 12:44:41,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:44:41,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:44:41,769 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:41,770 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117212593] [2020-10-11 12:44:41,770 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1386569471] [2020-10-11 12:44:41,770 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 [2020-10-11 12:44:41,825 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-11 12:44:41,825 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:44:41,826 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-11 12:44:41,827 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:44:41,883 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:41,884 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:44:41,884 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-11 12:44:41,884 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832676757] [2020-10-11 12:44:41,884 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-11 12:44:41,884 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:44:41,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-11 12:44:41,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-11 12:44:41,885 INFO L87 Difference]: Start difference. First operand 101 states and 245 transitions. Second operand 11 states. [2020-10-11 12:44:41,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:44:41,988 INFO L93 Difference]: Finished difference Result 130 states and 301 transitions. [2020-10-11 12:44:41,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-11 12:44:41,989 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 11 [2020-10-11 12:44:41,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:44:41,991 INFO L225 Difference]: With dead ends: 130 [2020-10-11 12:44:41,991 INFO L226 Difference]: Without dead ends: 128 [2020-10-11 12:44:41,991 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2020-10-11 12:44:41,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2020-10-11 12:44:41,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 99. [2020-10-11 12:44:41,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-10-11 12:44:41,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 240 transitions. [2020-10-11 12:44:41,996 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 240 transitions. Word has length 11 [2020-10-11 12:44:41,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:44:41,997 INFO L481 AbstractCegarLoop]: Abstraction has 99 states and 240 transitions. [2020-10-11 12:44:41,997 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-11 12:44:41,997 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 240 transitions. [2020-10-11 12:44:41,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-11 12:44:41,997 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:44:41,998 INFO L421 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:44:42,206 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2020-10-11 12:44:42,207 INFO L429 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:44:42,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:44:42,207 INFO L82 PathProgramCache]: Analyzing trace with hash 2130044846, now seen corresponding path program 16 times [2020-10-11 12:44:42,207 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:44:42,208 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107623953] [2020-10-11 12:44:42,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:44:42,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:44:42,255 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:42,255 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107623953] [2020-10-11 12:44:42,255 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [397384690] [2020-10-11 12:44:42,255 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 [2020-10-11 12:44:42,292 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-11 12:44:42,292 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:44:42,293 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-11 12:44:42,294 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:44:42,379 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:42,380 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:44:42,380 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-11 12:44:42,380 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93630764] [2020-10-11 12:44:42,380 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-11 12:44:42,381 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:44:42,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-11 12:44:42,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-11 12:44:42,381 INFO L87 Difference]: Start difference. First operand 99 states and 240 transitions. Second operand 11 states. [2020-10-11 12:44:42,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:44:42,519 INFO L93 Difference]: Finished difference Result 131 states and 303 transitions. [2020-10-11 12:44:42,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-11 12:44:42,519 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 11 [2020-10-11 12:44:42,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:44:42,520 INFO L225 Difference]: With dead ends: 131 [2020-10-11 12:44:42,521 INFO L226 Difference]: Without dead ends: 129 [2020-10-11 12:44:42,521 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=79, Invalid=161, Unknown=0, NotChecked=0, Total=240 [2020-10-11 12:44:42,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2020-10-11 12:44:42,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 101. [2020-10-11 12:44:42,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-10-11 12:44:42,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 247 transitions. [2020-10-11 12:44:42,526 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 247 transitions. Word has length 11 [2020-10-11 12:44:42,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:44:42,527 INFO L481 AbstractCegarLoop]: Abstraction has 101 states and 247 transitions. [2020-10-11 12:44:42,527 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-11 12:44:42,527 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 247 transitions. [2020-10-11 12:44:42,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-11 12:44:42,529 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:44:42,529 INFO L421 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:44:42,739 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2020-10-11 12:44:42,739 INFO L429 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:44:42,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:44:42,740 INFO L82 PathProgramCache]: Analyzing trace with hash 2130066205, now seen corresponding path program 17 times [2020-10-11 12:44:42,740 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:44:42,740 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380401613] [2020-10-11 12:44:42,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:44:42,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:44:42,785 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:42,785 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380401613] [2020-10-11 12:44:42,786 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [237276793] [2020-10-11 12:44:42,786 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 [2020-10-11 12:44:42,826 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-11 12:44:42,826 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:44:42,827 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-11 12:44:42,828 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:44:42,892 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-11 12:44:42,900 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:42,900 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:44:42,900 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-11 12:44:42,901 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316165335] [2020-10-11 12:44:42,901 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-11 12:44:42,901 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:44:42,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-11 12:44:42,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-11 12:44:42,902 INFO L87 Difference]: Start difference. First operand 101 states and 247 transitions. Second operand 11 states. [2020-10-11 12:44:43,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:44:43,034 INFO L93 Difference]: Finished difference Result 131 states and 311 transitions. [2020-10-11 12:44:43,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-11 12:44:43,034 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 11 [2020-10-11 12:44:43,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:44:43,035 INFO L225 Difference]: With dead ends: 131 [2020-10-11 12:44:43,036 INFO L226 Difference]: Without dead ends: 126 [2020-10-11 12:44:43,036 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 [2020-10-11 12:44:43,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2020-10-11 12:44:43,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 101. [2020-10-11 12:44:43,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-10-11 12:44:43,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 247 transitions. [2020-10-11 12:44:43,041 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 247 transitions. Word has length 11 [2020-10-11 12:44:43,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:44:43,041 INFO L481 AbstractCegarLoop]: Abstraction has 101 states and 247 transitions. [2020-10-11 12:44:43,042 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-11 12:44:43,042 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 247 transitions. [2020-10-11 12:44:43,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-11 12:44:43,042 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:44:43,042 INFO L421 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:44:43,254 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:44:43,254 INFO L429 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:44:43,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:44:43,255 INFO L82 PathProgramCache]: Analyzing trace with hash 2130067166, now seen corresponding path program 18 times [2020-10-11 12:44:43,256 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:44:43,256 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341973456] [2020-10-11 12:44:43,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:44:43,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:44:43,305 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:43,306 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341973456] [2020-10-11 12:44:43,306 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [834360868] [2020-10-11 12:44:43,306 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 [2020-10-11 12:44:43,357 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-10-11 12:44:43,357 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:44:43,358 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-11 12:44:43,359 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:44:43,435 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-11 12:44:43,442 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:43,442 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:44:43,442 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-11 12:44:43,442 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624002456] [2020-10-11 12:44:43,443 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-11 12:44:43,443 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:44:43,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-11 12:44:43,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-11 12:44:43,443 INFO L87 Difference]: Start difference. First operand 101 states and 247 transitions. Second operand 11 states. [2020-10-11 12:44:43,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:44:43,659 INFO L93 Difference]: Finished difference Result 145 states and 339 transitions. [2020-10-11 12:44:43,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-11 12:44:43,660 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 11 [2020-10-11 12:44:43,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:44:43,661 INFO L225 Difference]: With dead ends: 145 [2020-10-11 12:44:43,661 INFO L226 Difference]: Without dead ends: 140 [2020-10-11 12:44:43,662 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 [2020-10-11 12:44:43,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-10-11 12:44:43,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 99. [2020-10-11 12:44:43,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-10-11 12:44:43,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 240 transitions. [2020-10-11 12:44:43,666 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 240 transitions. Word has length 11 [2020-10-11 12:44:43,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:44:43,666 INFO L481 AbstractCegarLoop]: Abstraction has 99 states and 240 transitions. [2020-10-11 12:44:43,666 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-11 12:44:43,666 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 240 transitions. [2020-10-11 12:44:43,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-11 12:44:43,667 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:44:43,667 INFO L421 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:44:43,878 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2020-10-11 12:44:43,878 INFO L429 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:44:43,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:44:43,879 INFO L82 PathProgramCache]: Analyzing trace with hash 2130095996, now seen corresponding path program 19 times [2020-10-11 12:44:43,879 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:44:43,879 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740337596] [2020-10-11 12:44:43,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:44:43,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:44:43,938 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:43,938 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740337596] [2020-10-11 12:44:43,939 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [238943709] [2020-10-11 12:44:43,939 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 [2020-10-11 12:44:43,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:44:43,983 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-11 12:44:43,984 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:44:44,055 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-11 12:44:44,062 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:44,063 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:44:44,063 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-11 12:44:44,063 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792557003] [2020-10-11 12:44:44,064 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-11 12:44:44,064 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:44:44,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-11 12:44:44,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-11 12:44:44,065 INFO L87 Difference]: Start difference. First operand 99 states and 240 transitions. Second operand 11 states. [2020-10-11 12:44:44,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:44:44,231 INFO L93 Difference]: Finished difference Result 135 states and 315 transitions. [2020-10-11 12:44:44,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-11 12:44:44,232 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 11 [2020-10-11 12:44:44,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:44:44,233 INFO L225 Difference]: With dead ends: 135 [2020-10-11 12:44:44,234 INFO L226 Difference]: Without dead ends: 130 [2020-10-11 12:44:44,234 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=96, Invalid=176, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:44:44,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2020-10-11 12:44:44,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 98. [2020-10-11 12:44:44,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-10-11 12:44:44,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 231 transitions. [2020-10-11 12:44:44,238 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 231 transitions. Word has length 11 [2020-10-11 12:44:44,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:44:44,238 INFO L481 AbstractCegarLoop]: Abstraction has 98 states and 231 transitions. [2020-10-11 12:44:44,238 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-11 12:44:44,238 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 231 transitions. [2020-10-11 12:44:44,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-11 12:44:44,239 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:44:44,239 INFO L421 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:44:44,449 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:44:44,450 INFO L429 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:44:44,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:44:44,450 INFO L82 PathProgramCache]: Analyzing trace with hash -1822274800, now seen corresponding path program 4 times [2020-10-11 12:44:44,450 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:44:44,451 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410485060] [2020-10-11 12:44:44,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:44:44,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:44:44,514 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:44,515 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410485060] [2020-10-11 12:44:44,515 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1717946612] [2020-10-11 12:44:44,515 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 [2020-10-11 12:44:44,551 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-11 12:44:44,552 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:44:44,552 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-11 12:44:44,553 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:44:44,644 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-11 12:44:44,664 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:44,664 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:44:44,664 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2020-10-11 12:44:44,665 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338259200] [2020-10-11 12:44:44,665 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-11 12:44:44,665 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:44:44,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-11 12:44:44,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2020-10-11 12:44:44,666 INFO L87 Difference]: Start difference. First operand 98 states and 231 transitions. Second operand 14 states. [2020-10-11 12:44:44,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:44:44,772 INFO L93 Difference]: Finished difference Result 143 states and 333 transitions. [2020-10-11 12:44:44,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-11 12:44:44,772 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 11 [2020-10-11 12:44:44,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:44:44,774 INFO L225 Difference]: With dead ends: 143 [2020-10-11 12:44:44,774 INFO L226 Difference]: Without dead ends: 138 [2020-10-11 12:44:44,775 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 [2020-10-11 12:44:44,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-10-11 12:44:44,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 105. [2020-10-11 12:44:44,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-10-11 12:44:44,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 257 transitions. [2020-10-11 12:44:44,778 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 257 transitions. Word has length 11 [2020-10-11 12:44:44,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:44:44,779 INFO L481 AbstractCegarLoop]: Abstraction has 105 states and 257 transitions. [2020-10-11 12:44:44,779 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-11 12:44:44,779 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 257 transitions. [2020-10-11 12:44:44,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-11 12:44:44,779 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:44:44,779 INFO L421 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:44:44,989 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2020-10-11 12:44:44,990 INFO L429 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:44:44,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:44:44,990 INFO L82 PathProgramCache]: Analyzing trace with hash 62604888, now seen corresponding path program 10 times [2020-10-11 12:44:44,991 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:44:44,991 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146831984] [2020-10-11 12:44:44,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:44:44,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:44:45,077 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:45,077 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146831984] [2020-10-11 12:44:45,077 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [356300499] [2020-10-11 12:44:45,077 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 [2020-10-11 12:44:45,111 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-11 12:44:45,112 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:44:45,112 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-11 12:44:45,113 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:44:45,206 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:45,206 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:44:45,206 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-11 12:44:45,207 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210597274] [2020-10-11 12:44:45,207 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-11 12:44:45,207 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:44:45,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-11 12:44:45,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-11 12:44:45,208 INFO L87 Difference]: Start difference. First operand 105 states and 257 transitions. Second operand 13 states. [2020-10-11 12:44:45,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:44:45,249 INFO L93 Difference]: Finished difference Result 132 states and 311 transitions. [2020-10-11 12:44:45,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-11 12:44:45,249 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 11 [2020-10-11 12:44:45,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:44:45,251 INFO L225 Difference]: With dead ends: 132 [2020-10-11 12:44:45,251 INFO L226 Difference]: Without dead ends: 129 [2020-10-11 12:44:45,251 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 [2020-10-11 12:44:45,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2020-10-11 12:44:45,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 110. [2020-10-11 12:44:45,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-10-11 12:44:45,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 268 transitions. [2020-10-11 12:44:45,255 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 268 transitions. Word has length 11 [2020-10-11 12:44:45,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:44:45,255 INFO L481 AbstractCegarLoop]: Abstraction has 110 states and 268 transitions. [2020-10-11 12:44:45,255 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-11 12:44:45,255 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 268 transitions. [2020-10-11 12:44:45,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-11 12:44:45,256 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:44:45,256 INFO L421 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:44:45,467 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2020-10-11 12:44:45,468 INFO L429 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:44:45,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:44:45,468 INFO L82 PathProgramCache]: Analyzing trace with hash 727540008, now seen corresponding path program 11 times [2020-10-11 12:44:45,469 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:44:45,469 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215307571] [2020-10-11 12:44:45,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:44:45,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:44:45,556 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:45,556 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215307571] [2020-10-11 12:44:45,556 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1395256880] [2020-10-11 12:44:45,557 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 [2020-10-11 12:44:45,624 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-11 12:44:45,624 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:44:45,625 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-11 12:44:45,625 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:44:45,716 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:45,717 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:44:45,717 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-11 12:44:45,717 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020816932] [2020-10-11 12:44:45,717 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-11 12:44:45,717 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:44:45,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-11 12:44:45,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2020-10-11 12:44:45,718 INFO L87 Difference]: Start difference. First operand 110 states and 268 transitions. Second operand 13 states. [2020-10-11 12:44:45,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:44:45,781 INFO L93 Difference]: Finished difference Result 143 states and 332 transitions. [2020-10-11 12:44:45,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-11 12:44:45,781 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 11 [2020-10-11 12:44:45,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:44:45,783 INFO L225 Difference]: With dead ends: 143 [2020-10-11 12:44:45,783 INFO L226 Difference]: Without dead ends: 140 [2020-10-11 12:44:45,783 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 [2020-10-11 12:44:45,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-10-11 12:44:45,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 110. [2020-10-11 12:44:45,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-10-11 12:44:45,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 268 transitions. [2020-10-11 12:44:45,787 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 268 transitions. Word has length 11 [2020-10-11 12:44:45,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:44:45,788 INFO L481 AbstractCegarLoop]: Abstraction has 110 states and 268 transitions. [2020-10-11 12:44:45,788 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-11 12:44:45,788 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 268 transitions. [2020-10-11 12:44:45,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-11 12:44:45,790 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:44:45,790 INFO L421 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:44:45,999 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2020-10-11 12:44:46,000 INFO L429 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:44:46,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:44:46,000 INFO L82 PathProgramCache]: Analyzing trace with hash 748989528, now seen corresponding path program 12 times [2020-10-11 12:44:46,000 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:44:46,001 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989175768] [2020-10-11 12:44:46,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:44:46,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:44:46,076 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:46,076 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989175768] [2020-10-11 12:44:46,077 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [83722067] [2020-10-11 12:44:46,077 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 [2020-10-11 12:44:46,121 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-11 12:44:46,121 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:44:46,122 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-11 12:44:46,123 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:44:46,207 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:46,207 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:44:46,207 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-11 12:44:46,208 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006650255] [2020-10-11 12:44:46,208 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-11 12:44:46,209 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:44:46,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-11 12:44:46,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2020-10-11 12:44:46,209 INFO L87 Difference]: Start difference. First operand 110 states and 268 transitions. Second operand 13 states. [2020-10-11 12:44:46,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:44:46,286 INFO L93 Difference]: Finished difference Result 142 states and 332 transitions. [2020-10-11 12:44:46,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-11 12:44:46,287 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 11 [2020-10-11 12:44:46,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:44:46,288 INFO L225 Difference]: With dead ends: 142 [2020-10-11 12:44:46,288 INFO L226 Difference]: Without dead ends: 139 [2020-10-11 12:44:46,289 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 [2020-10-11 12:44:46,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2020-10-11 12:44:46,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 112. [2020-10-11 12:44:46,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-10-11 12:44:46,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 275 transitions. [2020-10-11 12:44:46,292 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 275 transitions. Word has length 11 [2020-10-11 12:44:46,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:44:46,292 INFO L481 AbstractCegarLoop]: Abstraction has 112 states and 275 transitions. [2020-10-11 12:44:46,292 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-11 12:44:46,292 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 275 transitions. [2020-10-11 12:44:46,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-11 12:44:46,293 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:44:46,293 INFO L421 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:44:46,501 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2020-10-11 12:44:46,502 INFO L429 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:44:46,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:44:46,502 INFO L82 PathProgramCache]: Analyzing trace with hash 749681448, now seen corresponding path program 13 times [2020-10-11 12:44:46,502 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:44:46,503 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318309854] [2020-10-11 12:44:46,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:44:46,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:44:46,564 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:46,564 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318309854] [2020-10-11 12:44:46,564 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [598818147] [2020-10-11 12:44:46,564 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 [2020-10-11 12:44:46,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:44:46,608 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-11 12:44:46,608 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:44:46,696 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:46,696 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:44:46,696 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-11 12:44:46,696 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386669152] [2020-10-11 12:44:46,697 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-11 12:44:46,697 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:44:46,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-11 12:44:46,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2020-10-11 12:44:46,697 INFO L87 Difference]: Start difference. First operand 112 states and 275 transitions. Second operand 13 states. [2020-10-11 12:44:46,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:44:46,785 INFO L93 Difference]: Finished difference Result 141 states and 332 transitions. [2020-10-11 12:44:46,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-11 12:44:46,786 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 11 [2020-10-11 12:44:46,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:44:46,787 INFO L225 Difference]: With dead ends: 141 [2020-10-11 12:44:46,787 INFO L226 Difference]: Without dead ends: 138 [2020-10-11 12:44:46,787 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=81, Invalid=159, Unknown=0, NotChecked=0, Total=240 [2020-10-11 12:44:46,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-10-11 12:44:46,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 114. [2020-10-11 12:44:46,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-10-11 12:44:46,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 282 transitions. [2020-10-11 12:44:46,791 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 282 transitions. Word has length 11 [2020-10-11 12:44:46,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:44:46,791 INFO L481 AbstractCegarLoop]: Abstraction has 114 states and 282 transitions. [2020-10-11 12:44:46,791 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-11 12:44:46,791 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 282 transitions. [2020-10-11 12:44:46,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-11 12:44:46,792 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:44:46,792 INFO L421 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:44:47,001 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2020-10-11 12:44:47,001 INFO L429 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:44:47,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:44:47,002 INFO L82 PathProgramCache]: Analyzing trace with hash 749703768, now seen corresponding path program 14 times [2020-10-11 12:44:47,002 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:44:47,002 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143855129] [2020-10-11 12:44:47,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:44:47,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:44:47,055 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:47,055 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143855129] [2020-10-11 12:44:47,055 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1978912000] [2020-10-11 12:44:47,056 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 [2020-10-11 12:44:47,090 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-11 12:44:47,090 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:44:47,090 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-11 12:44:47,091 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:44:47,162 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-11 12:44:47,180 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:47,181 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:44:47,181 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-11 12:44:47,181 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578568558] [2020-10-11 12:44:47,181 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-11 12:44:47,182 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:44:47,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-11 12:44:47,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-11 12:44:47,182 INFO L87 Difference]: Start difference. First operand 114 states and 282 transitions. Second operand 13 states. [2020-10-11 12:44:47,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:44:47,320 INFO L93 Difference]: Finished difference Result 150 states and 356 transitions. [2020-10-11 12:44:47,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-11 12:44:47,320 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 11 [2020-10-11 12:44:47,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:44:47,322 INFO L225 Difference]: With dead ends: 150 [2020-10-11 12:44:47,322 INFO L226 Difference]: Without dead ends: 144 [2020-10-11 12:44:47,322 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=103, Invalid=203, Unknown=0, NotChecked=0, Total=306 [2020-10-11 12:44:47,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-10-11 12:44:47,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 113. [2020-10-11 12:44:47,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-10-11 12:44:47,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 282 transitions. [2020-10-11 12:44:47,325 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 282 transitions. Word has length 11 [2020-10-11 12:44:47,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:44:47,325 INFO L481 AbstractCegarLoop]: Abstraction has 113 states and 282 transitions. [2020-10-11 12:44:47,325 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-11 12:44:47,325 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 282 transitions. [2020-10-11 12:44:47,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-11 12:44:47,326 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:44:47,326 INFO L421 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:44:47,526 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37,31 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:44:47,526 INFO L429 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:44:47,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:44:47,527 INFO L82 PathProgramCache]: Analyzing trace with hash 920465749, now seen corresponding path program 20 times [2020-10-11 12:44:47,527 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:44:47,528 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916084059] [2020-10-11 12:44:47,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:44:47,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:44:47,597 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:47,597 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916084059] [2020-10-11 12:44:47,598 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1179346234] [2020-10-11 12:44:47,598 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 [2020-10-11 12:44:47,638 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-11 12:44:47,638 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:44:47,639 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-11 12:44:47,639 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:44:47,730 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:47,731 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:44:47,731 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-11 12:44:47,731 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804238453] [2020-10-11 12:44:47,731 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-11 12:44:47,732 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:44:47,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-11 12:44:47,732 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-11 12:44:47,732 INFO L87 Difference]: Start difference. First operand 113 states and 282 transitions. Second operand 13 states. [2020-10-11 12:44:47,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:44:47,774 INFO L93 Difference]: Finished difference Result 138 states and 332 transitions. [2020-10-11 12:44:47,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-11 12:44:47,775 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-11 12:44:47,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:44:47,776 INFO L225 Difference]: With dead ends: 138 [2020-10-11 12:44:47,776 INFO L226 Difference]: Without dead ends: 136 [2020-10-11 12:44:47,776 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 [2020-10-11 12:44:47,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-10-11 12:44:47,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 117. [2020-10-11 12:44:47,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2020-10-11 12:44:47,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 294 transitions. [2020-10-11 12:44:47,779 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 294 transitions. Word has length 12 [2020-10-11 12:44:47,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:44:47,779 INFO L481 AbstractCegarLoop]: Abstraction has 117 states and 294 transitions. [2020-10-11 12:44:47,779 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-11 12:44:47,780 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 294 transitions. [2020-10-11 12:44:47,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-11 12:44:47,780 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:44:47,780 INFO L421 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:44:47,988 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2020-10-11 12:44:47,988 INFO L429 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:44:47,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:44:47,989 INFO L82 PathProgramCache]: Analyzing trace with hash 920466710, now seen corresponding path program 21 times [2020-10-11 12:44:47,989 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:44:47,989 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095308216] [2020-10-11 12:44:47,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:44:48,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:44:48,100 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:48,100 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095308216] [2020-10-11 12:44:48,100 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1895218625] [2020-10-11 12:44:48,101 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 [2020-10-11 12:44:48,161 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-11 12:44:48,161 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:44:48,163 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-11 12:44:48,164 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:44:48,325 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:48,326 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:44:48,326 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-11 12:44:48,326 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71603044] [2020-10-11 12:44:48,327 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-11 12:44:48,327 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:44:48,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-11 12:44:48,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-11 12:44:48,328 INFO L87 Difference]: Start difference. First operand 117 states and 294 transitions. Second operand 13 states. [2020-10-11 12:44:48,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:44:48,465 INFO L93 Difference]: Finished difference Result 145 states and 346 transitions. [2020-10-11 12:44:48,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-11 12:44:48,466 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-11 12:44:48,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:44:48,467 INFO L225 Difference]: With dead ends: 145 [2020-10-11 12:44:48,468 INFO L226 Difference]: Without dead ends: 143 [2020-10-11 12:44:48,469 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=83, Invalid=157, Unknown=0, NotChecked=0, Total=240 [2020-10-11 12:44:48,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2020-10-11 12:44:48,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 115. [2020-10-11 12:44:48,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2020-10-11 12:44:48,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 288 transitions. [2020-10-11 12:44:48,474 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 288 transitions. Word has length 12 [2020-10-11 12:44:48,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:44:48,474 INFO L481 AbstractCegarLoop]: Abstraction has 115 states and 288 transitions. [2020-10-11 12:44:48,475 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-11 12:44:48,475 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 288 transitions. [2020-10-11 12:44:48,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-11 12:44:48,475 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:44:48,476 INFO L421 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:44:48,686 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2020-10-11 12:44:48,686 INFO L429 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:44:48,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:44:48,687 INFO L82 PathProgramCache]: Analyzing trace with hash 920495540, now seen corresponding path program 22 times [2020-10-11 12:44:48,688 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:44:48,688 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833819848] [2020-10-11 12:44:48,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:44:48,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:44:48,755 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:48,756 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833819848] [2020-10-11 12:44:48,756 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1699775400] [2020-10-11 12:44:48,756 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 [2020-10-11 12:44:48,793 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-11 12:44:48,793 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:44:48,794 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-11 12:44:48,796 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:44:48,879 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:48,879 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:44:48,879 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-11 12:44:48,879 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313771997] [2020-10-11 12:44:48,880 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-11 12:44:48,880 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:44:48,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-11 12:44:48,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2020-10-11 12:44:48,880 INFO L87 Difference]: Start difference. First operand 115 states and 288 transitions. Second operand 13 states. [2020-10-11 12:44:49,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:44:49,001 INFO L93 Difference]: Finished difference Result 150 states and 356 transitions. [2020-10-11 12:44:49,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-11 12:44:49,002 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-11 12:44:49,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:44:49,003 INFO L225 Difference]: With dead ends: 150 [2020-10-11 12:44:49,003 INFO L226 Difference]: Without dead ends: 148 [2020-10-11 12:44:49,003 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=95, Invalid=177, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:44:49,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2020-10-11 12:44:49,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 116. [2020-10-11 12:44:49,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-10-11 12:44:49,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 289 transitions. [2020-10-11 12:44:49,007 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 289 transitions. Word has length 12 [2020-10-11 12:44:49,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:44:49,007 INFO L481 AbstractCegarLoop]: Abstraction has 116 states and 289 transitions. [2020-10-11 12:44:49,007 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-11 12:44:49,008 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 289 transitions. [2020-10-11 12:44:49,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-11 12:44:49,008 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:44:49,008 INFO L421 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:44:49,209 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,34 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:44:49,209 INFO L429 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:44:49,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:44:49,210 INFO L82 PathProgramCache]: Analyzing trace with hash 921389270, now seen corresponding path program 23 times [2020-10-11 12:44:49,210 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:44:49,210 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450555292] [2020-10-11 12:44:49,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:44:49,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:44:49,281 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:49,281 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450555292] [2020-10-11 12:44:49,281 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1165297599] [2020-10-11 12:44:49,281 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 [2020-10-11 12:44:49,320 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-11 12:44:49,320 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:44:49,321 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-11 12:44:49,322 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:44:49,411 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:49,411 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:44:49,411 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-11 12:44:49,412 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926422497] [2020-10-11 12:44:49,412 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-11 12:44:49,412 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:44:49,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-11 12:44:49,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2020-10-11 12:44:49,413 INFO L87 Difference]: Start difference. First operand 116 states and 289 transitions. Second operand 13 states. [2020-10-11 12:44:49,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:44:49,557 INFO L93 Difference]: Finished difference Result 148 states and 352 transitions. [2020-10-11 12:44:49,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-11 12:44:49,558 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-11 12:44:49,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:44:49,559 INFO L225 Difference]: With dead ends: 148 [2020-10-11 12:44:49,559 INFO L226 Difference]: Without dead ends: 146 [2020-10-11 12:44:49,560 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 [2020-10-11 12:44:49,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-10-11 12:44:49,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 120. [2020-10-11 12:44:49,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-10-11 12:44:49,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 299 transitions. [2020-10-11 12:44:49,564 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 299 transitions. Word has length 12 [2020-10-11 12:44:49,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:44:49,565 INFO L481 AbstractCegarLoop]: Abstraction has 120 states and 299 transitions. [2020-10-11 12:44:49,566 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-11 12:44:49,566 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 299 transitions. [2020-10-11 12:44:49,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-11 12:44:49,566 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:44:49,566 INFO L421 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:44:49,767 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2020-10-11 12:44:49,767 INFO L429 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:44:49,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:44:49,767 INFO L82 PathProgramCache]: Analyzing trace with hash 921390231, now seen corresponding path program 24 times [2020-10-11 12:44:49,768 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:44:49,768 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499509109] [2020-10-11 12:44:49,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:44:49,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:44:49,839 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:49,840 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499509109] [2020-10-11 12:44:49,840 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [10836513] [2020-10-11 12:44:49,840 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 [2020-10-11 12:44:49,881 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-10-11 12:44:49,881 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:44:49,882 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-11 12:44:49,883 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:44:49,970 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:49,971 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:44:49,971 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-11 12:44:49,971 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560051369] [2020-10-11 12:44:49,971 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-11 12:44:49,971 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:44:49,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-11 12:44:49,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2020-10-11 12:44:49,972 INFO L87 Difference]: Start difference. First operand 120 states and 299 transitions. Second operand 13 states. [2020-10-11 12:44:50,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:44:50,092 INFO L93 Difference]: Finished difference Result 149 states and 354 transitions. [2020-10-11 12:44:50,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-11 12:44:50,093 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-11 12:44:50,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:44:50,094 INFO L225 Difference]: With dead ends: 149 [2020-10-11 12:44:50,094 INFO L226 Difference]: Without dead ends: 147 [2020-10-11 12:44:50,095 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=95, Invalid=177, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:44:50,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2020-10-11 12:44:50,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 118. [2020-10-11 12:44:50,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-10-11 12:44:50,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 293 transitions. [2020-10-11 12:44:50,100 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 293 transitions. Word has length 12 [2020-10-11 12:44:50,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:44:50,102 INFO L481 AbstractCegarLoop]: Abstraction has 118 states and 293 transitions. [2020-10-11 12:44:50,102 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-11 12:44:50,102 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 293 transitions. [2020-10-11 12:44:50,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-11 12:44:50,103 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:44:50,103 INFO L421 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:44:50,303 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,36 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:44:50,304 INFO L429 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:44:50,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:44:50,304 INFO L82 PathProgramCache]: Analyzing trace with hash 1557695239, now seen corresponding path program 25 times [2020-10-11 12:44:50,304 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:44:50,305 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466858883] [2020-10-11 12:44:50,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:44:50,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:44:50,388 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:50,389 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466858883] [2020-10-11 12:44:50,389 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1915171540] [2020-10-11 12:44:50,389 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 [2020-10-11 12:44:50,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:44:50,426 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-11 12:44:50,427 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:44:50,514 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:50,515 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:44:50,515 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-11 12:44:50,515 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263908172] [2020-10-11 12:44:50,515 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-11 12:44:50,515 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:44:50,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-11 12:44:50,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2020-10-11 12:44:50,516 INFO L87 Difference]: Start difference. First operand 118 states and 293 transitions. Second operand 13 states. [2020-10-11 12:44:50,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:44:50,579 INFO L93 Difference]: Finished difference Result 152 states and 360 transitions. [2020-10-11 12:44:50,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-11 12:44:50,580 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-11 12:44:50,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:44:50,582 INFO L225 Difference]: With dead ends: 152 [2020-10-11 12:44:50,582 INFO L226 Difference]: Without dead ends: 150 [2020-10-11 12:44:50,582 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 [2020-10-11 12:44:50,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2020-10-11 12:44:50,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 122. [2020-10-11 12:44:50,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-10-11 12:44:50,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 305 transitions. [2020-10-11 12:44:50,585 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 305 transitions. Word has length 12 [2020-10-11 12:44:50,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:44:50,586 INFO L481 AbstractCegarLoop]: Abstraction has 122 states and 305 transitions. [2020-10-11 12:44:50,586 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-11 12:44:50,586 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 305 transitions. [2020-10-11 12:44:50,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-11 12:44:50,586 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:44:50,587 INFO L421 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:44:50,792 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2020-10-11 12:44:50,793 INFO L429 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:44:50,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:44:50,793 INFO L82 PathProgramCache]: Analyzing trace with hash 1557696200, now seen corresponding path program 26 times [2020-10-11 12:44:50,794 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:44:50,794 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620630074] [2020-10-11 12:44:50,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:44:50,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:44:50,872 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:50,872 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620630074] [2020-10-11 12:44:50,872 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [716663514] [2020-10-11 12:44:50,873 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 [2020-10-11 12:44:50,912 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-11 12:44:50,912 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:44:50,913 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-11 12:44:50,914 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:44:51,027 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:51,028 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:44:51,028 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-11 12:44:51,028 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625854495] [2020-10-11 12:44:51,028 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-11 12:44:51,029 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:44:51,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-11 12:44:51,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2020-10-11 12:44:51,029 INFO L87 Difference]: Start difference. First operand 122 states and 305 transitions. Second operand 13 states. [2020-10-11 12:44:51,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:44:51,158 INFO L93 Difference]: Finished difference Result 153 states and 361 transitions. [2020-10-11 12:44:51,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-11 12:44:51,158 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-11 12:44:51,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:44:51,159 INFO L225 Difference]: With dead ends: 153 [2020-10-11 12:44:51,160 INFO L226 Difference]: Without dead ends: 151 [2020-10-11 12:44:51,160 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 [2020-10-11 12:44:51,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2020-10-11 12:44:51,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 120. [2020-10-11 12:44:51,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-10-11 12:44:51,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 299 transitions. [2020-10-11 12:44:51,163 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 299 transitions. Word has length 12 [2020-10-11 12:44:51,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:44:51,163 INFO L481 AbstractCegarLoop]: Abstraction has 120 states and 299 transitions. [2020-10-11 12:44:51,164 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-11 12:44:51,164 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 299 transitions. [2020-10-11 12:44:51,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-11 12:44:51,164 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:44:51,164 INFO L421 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:44:51,372 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2020-10-11 12:44:51,373 INFO L429 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:44:51,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:44:51,373 INFO L82 PathProgramCache]: Analyzing trace with hash 1557725030, now seen corresponding path program 27 times [2020-10-11 12:44:51,374 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:44:51,374 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643850394] [2020-10-11 12:44:51,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:44:51,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:44:51,438 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:51,439 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643850394] [2020-10-11 12:44:51,439 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1735418930] [2020-10-11 12:44:51,439 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 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 [2020-10-11 12:44:51,481 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-11 12:44:51,482 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:44:51,482 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-11 12:44:51,483 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:44:51,572 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:51,572 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:44:51,573 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-11 12:44:51,573 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686176] [2020-10-11 12:44:51,573 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-11 12:44:51,573 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:44:51,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-11 12:44:51,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2020-10-11 12:44:51,574 INFO L87 Difference]: Start difference. First operand 120 states and 299 transitions. Second operand 13 states. [2020-10-11 12:44:51,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:44:51,713 INFO L93 Difference]: Finished difference Result 156 states and 367 transitions. [2020-10-11 12:44:51,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-11 12:44:51,714 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-11 12:44:51,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:44:51,715 INFO L225 Difference]: With dead ends: 156 [2020-10-11 12:44:51,715 INFO L226 Difference]: Without dead ends: 154 [2020-10-11 12:44:51,716 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=101, Invalid=205, Unknown=0, NotChecked=0, Total=306 [2020-10-11 12:44:51,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-10-11 12:44:51,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 119. [2020-10-11 12:44:51,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-10-11 12:44:51,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 295 transitions. [2020-10-11 12:44:51,720 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 295 transitions. Word has length 12 [2020-10-11 12:44:51,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:44:51,721 INFO L481 AbstractCegarLoop]: Abstraction has 119 states and 295 transitions. [2020-10-11 12:44:51,721 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-11 12:44:51,721 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 295 transitions. [2020-10-11 12:44:51,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-11 12:44:51,721 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:44:51,721 INFO L421 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:44:51,932 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2020-10-11 12:44:51,932 INFO L429 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:44:51,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:44:51,933 INFO L82 PathProgramCache]: Analyzing trace with hash 1578251029, now seen corresponding path program 28 times [2020-10-11 12:44:51,933 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:44:51,933 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099735090] [2020-10-11 12:44:51,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:44:51,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:44:52,003 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:52,003 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099735090] [2020-10-11 12:44:52,004 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1070813963] [2020-10-11 12:44:52,004 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 [2020-10-11 12:44:52,039 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-11 12:44:52,040 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:44:52,040 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-11 12:44:52,041 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:44:52,135 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:52,135 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:44:52,135 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-11 12:44:52,135 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862542436] [2020-10-11 12:44:52,136 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-11 12:44:52,136 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:44:52,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-11 12:44:52,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2020-10-11 12:44:52,136 INFO L87 Difference]: Start difference. First operand 119 states and 295 transitions. Second operand 13 states. [2020-10-11 12:44:52,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:44:52,217 INFO L93 Difference]: Finished difference Result 148 states and 351 transitions. [2020-10-11 12:44:52,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-11 12:44:52,217 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-11 12:44:52,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:44:52,218 INFO L225 Difference]: With dead ends: 148 [2020-10-11 12:44:52,218 INFO L226 Difference]: Without dead ends: 146 [2020-10-11 12:44:52,219 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 [2020-10-11 12:44:52,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-10-11 12:44:52,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 121. [2020-10-11 12:44:52,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-10-11 12:44:52,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 301 transitions. [2020-10-11 12:44:52,222 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 301 transitions. Word has length 12 [2020-10-11 12:44:52,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:44:52,222 INFO L481 AbstractCegarLoop]: Abstraction has 121 states and 301 transitions. [2020-10-11 12:44:52,223 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-11 12:44:52,223 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 301 transitions. [2020-10-11 12:44:52,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-11 12:44:52,223 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:44:52,223 INFO L421 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:44:52,432 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2020-10-11 12:44:52,433 INFO L429 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:44:52,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:44:52,433 INFO L82 PathProgramCache]: Analyzing trace with hash 1578251990, now seen corresponding path program 29 times [2020-10-11 12:44:52,434 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:44:52,434 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347545629] [2020-10-11 12:44:52,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:44:52,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:44:52,494 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:52,494 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347545629] [2020-10-11 12:44:52,494 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1306140015] [2020-10-11 12:44:52,495 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 [2020-10-11 12:44:52,535 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-11 12:44:52,535 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:44:52,536 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-11 12:44:52,536 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:44:52,630 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:52,630 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:44:52,630 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-11 12:44:52,631 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340536515] [2020-10-11 12:44:52,631 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-11 12:44:52,631 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:44:52,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-11 12:44:52,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2020-10-11 12:44:52,631 INFO L87 Difference]: Start difference. First operand 121 states and 301 transitions. Second operand 13 states. [2020-10-11 12:44:52,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:44:52,776 INFO L93 Difference]: Finished difference Result 157 states and 368 transitions. [2020-10-11 12:44:52,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-11 12:44:52,776 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-11 12:44:52,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:44:52,778 INFO L225 Difference]: With dead ends: 157 [2020-10-11 12:44:52,778 INFO L226 Difference]: Without dead ends: 155 [2020-10-11 12:44:52,778 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 [2020-10-11 12:44:52,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2020-10-11 12:44:52,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 120. [2020-10-11 12:44:52,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-10-11 12:44:52,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 297 transitions. [2020-10-11 12:44:52,783 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 297 transitions. Word has length 12 [2020-10-11 12:44:52,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:44:52,783 INFO L481 AbstractCegarLoop]: Abstraction has 120 states and 297 transitions. [2020-10-11 12:44:52,784 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-11 12:44:52,784 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 297 transitions. [2020-10-11 12:44:52,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-11 12:44:52,784 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:44:52,784 INFO L421 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:44:52,994 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47,41 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:44:52,994 INFO L429 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:44:52,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:44:52,995 INFO L82 PathProgramCache]: Analyzing trace with hash 1578914119, now seen corresponding path program 30 times [2020-10-11 12:44:52,995 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:44:52,995 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937028980] [2020-10-11 12:44:52,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:44:53,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:44:53,063 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:53,064 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937028980] [2020-10-11 12:44:53,064 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1036362101] [2020-10-11 12:44:53,064 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 [2020-10-11 12:44:53,101 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-10-11 12:44:53,101 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:44:53,101 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:44:53,102 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:44:53,118 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:53,119 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:44:53,119 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2020-10-11 12:44:53,119 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035136493] [2020-10-11 12:44:53,120 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-11 12:44:53,120 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:44:53,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-11 12:44:53,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-11 12:44:53,121 INFO L87 Difference]: Start difference. First operand 120 states and 297 transitions. Second operand 9 states. [2020-10-11 12:44:53,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:44:53,208 INFO L93 Difference]: Finished difference Result 149 states and 350 transitions. [2020-10-11 12:44:53,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-11 12:44:53,208 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 12 [2020-10-11 12:44:53,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:44:53,210 INFO L225 Difference]: With dead ends: 149 [2020-10-11 12:44:53,210 INFO L226 Difference]: Without dead ends: 147 [2020-10-11 12:44:53,210 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 [2020-10-11 12:44:53,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2020-10-11 12:44:53,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 124. [2020-10-11 12:44:53,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-10-11 12:44:53,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 303 transitions. [2020-10-11 12:44:53,213 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 303 transitions. Word has length 12 [2020-10-11 12:44:53,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:44:53,214 INFO L481 AbstractCegarLoop]: Abstraction has 124 states and 303 transitions. [2020-10-11 12:44:53,214 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-11 12:44:53,214 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 303 transitions. [2020-10-11 12:44:53,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-11 12:44:53,214 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:44:53,215 INFO L421 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:44:53,416 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2020-10-11 12:44:53,417 INFO L429 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:44:53,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:44:53,417 INFO L82 PathProgramCache]: Analyzing trace with hash 1578936439, now seen corresponding path program 31 times [2020-10-11 12:44:53,417 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:44:53,418 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363500939] [2020-10-11 12:44:53,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:44:53,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:44:53,477 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:53,477 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363500939] [2020-10-11 12:44:53,477 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1015969569] [2020-10-11 12:44:53,477 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 [2020-10-11 12:44:53,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:44:53,512 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-11 12:44:53,513 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:44:53,603 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-11 12:44:53,632 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:53,632 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:44:53,632 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-11 12:44:53,633 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415705117] [2020-10-11 12:44:53,633 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-11 12:44:53,633 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:44:53,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-11 12:44:53,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-10-11 12:44:53,634 INFO L87 Difference]: Start difference. First operand 124 states and 303 transitions. Second operand 13 states. [2020-10-11 12:44:53,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:44:53,876 INFO L93 Difference]: Finished difference Result 164 states and 389 transitions. [2020-10-11 12:44:53,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-11 12:44:53,877 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-11 12:44:53,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:44:53,878 INFO L225 Difference]: With dead ends: 164 [2020-10-11 12:44:53,878 INFO L226 Difference]: Without dead ends: 159 [2020-10-11 12:44:53,879 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 [2020-10-11 12:44:53,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2020-10-11 12:44:53,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 122. [2020-10-11 12:44:53,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-10-11 12:44:53,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 296 transitions. [2020-10-11 12:44:53,882 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 296 transitions. Word has length 12 [2020-10-11 12:44:53,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:44:53,883 INFO L481 AbstractCegarLoop]: Abstraction has 122 states and 296 transitions. [2020-10-11 12:44:53,883 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-11 12:44:53,883 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 296 transitions. [2020-10-11 12:44:53,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-11 12:44:53,883 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:44:53,883 INFO L421 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:44:54,085 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2020-10-11 12:44:54,086 INFO L429 AbstractCegarLoop]: === Iteration 51 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:44:54,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:44:54,086 INFO L82 PathProgramCache]: Analyzing trace with hash 1578943910, now seen corresponding path program 32 times [2020-10-11 12:44:54,087 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:44:54,087 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805048727] [2020-10-11 12:44:54,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:44:54,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:44:54,147 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:54,147 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805048727] [2020-10-11 12:44:54,147 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1624547578] [2020-10-11 12:44:54,148 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 [2020-10-11 12:44:54,193 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-11 12:44:54,193 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:44:54,194 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-11 12:44:54,195 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:44:54,303 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:54,303 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:44:54,303 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-11 12:44:54,303 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902976618] [2020-10-11 12:44:54,304 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-11 12:44:54,304 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:44:54,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-11 12:44:54,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2020-10-11 12:44:54,304 INFO L87 Difference]: Start difference. First operand 122 states and 296 transitions. Second operand 13 states. [2020-10-11 12:44:54,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:44:54,478 INFO L93 Difference]: Finished difference Result 156 states and 367 transitions. [2020-10-11 12:44:54,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-11 12:44:54,478 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-11 12:44:54,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:44:54,480 INFO L225 Difference]: With dead ends: 156 [2020-10-11 12:44:54,480 INFO L226 Difference]: Without dead ends: 154 [2020-10-11 12:44:54,480 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 [2020-10-11 12:44:54,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-10-11 12:44:54,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 124. [2020-10-11 12:44:54,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-10-11 12:44:54,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 303 transitions. [2020-10-11 12:44:54,484 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 303 transitions. Word has length 12 [2020-10-11 12:44:54,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:44:54,484 INFO L481 AbstractCegarLoop]: Abstraction has 124 states and 303 transitions. [2020-10-11 12:44:54,484 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-11 12:44:54,484 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 303 transitions. [2020-10-11 12:44:54,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-11 12:44:54,485 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:44:54,485 INFO L421 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:44:54,694 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,44 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:44:54,695 INFO L429 AbstractCegarLoop]: === Iteration 52 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:44:54,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:44:54,695 INFO L82 PathProgramCache]: Analyzing trace with hash 1578965269, now seen corresponding path program 33 times [2020-10-11 12:44:54,696 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:44:54,696 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059049782] [2020-10-11 12:44:54,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:44:54,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:44:54,752 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:54,752 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059049782] [2020-10-11 12:44:54,753 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1642880114] [2020-10-11 12:44:54,753 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 [2020-10-11 12:44:54,809 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-11 12:44:54,809 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:44:54,810 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-11 12:44:54,811 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:44:54,921 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-11 12:44:54,965 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:54,966 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:44:54,966 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-11 12:44:54,966 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027825693] [2020-10-11 12:44:54,966 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-11 12:44:54,967 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:44:54,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-11 12:44:54,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2020-10-11 12:44:54,967 INFO L87 Difference]: Start difference. First operand 124 states and 303 transitions. Second operand 13 states. [2020-10-11 12:44:55,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:44:55,409 INFO L93 Difference]: Finished difference Result 176 states and 416 transitions. [2020-10-11 12:44:55,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-11 12:44:55,410 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-11 12:44:55,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:44:55,411 INFO L225 Difference]: With dead ends: 176 [2020-10-11 12:44:55,411 INFO L226 Difference]: Without dead ends: 171 [2020-10-11 12:44:55,412 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=186, Invalid=366, Unknown=0, NotChecked=0, Total=552 [2020-10-11 12:44:55,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2020-10-11 12:44:55,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 124. [2020-10-11 12:44:55,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-10-11 12:44:55,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 303 transitions. [2020-10-11 12:44:55,416 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 303 transitions. Word has length 12 [2020-10-11 12:44:55,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:44:55,416 INFO L481 AbstractCegarLoop]: Abstraction has 124 states and 303 transitions. [2020-10-11 12:44:55,416 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-11 12:44:55,416 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 303 transitions. [2020-10-11 12:44:55,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-11 12:44:55,417 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:44:55,417 INFO L421 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:44:55,626 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable51 [2020-10-11 12:44:55,626 INFO L429 AbstractCegarLoop]: === Iteration 53 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:44:55,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:44:55,627 INFO L82 PathProgramCache]: Analyzing trace with hash 1578966230, now seen corresponding path program 34 times [2020-10-11 12:44:55,627 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:44:55,627 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985906628] [2020-10-11 12:44:55,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:44:55,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:44:55,684 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:55,684 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985906628] [2020-10-11 12:44:55,684 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [375999117] [2020-10-11 12:44:55,684 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 [2020-10-11 12:44:55,722 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-11 12:44:55,722 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:44:55,723 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-11 12:44:55,724 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:44:55,800 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-11 12:44:55,840 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:55,840 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:44:55,840 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-11 12:44:55,841 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960008863] [2020-10-11 12:44:55,841 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-11 12:44:55,841 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:44:55,841 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-11 12:44:55,842 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-10-11 12:44:55,842 INFO L87 Difference]: Start difference. First operand 124 states and 303 transitions. Second operand 13 states. [2020-10-11 12:44:56,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:44:56,074 INFO L93 Difference]: Finished difference Result 166 states and 393 transitions. [2020-10-11 12:44:56,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-11 12:44:56,074 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-11 12:44:56,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:44:56,076 INFO L225 Difference]: With dead ends: 166 [2020-10-11 12:44:56,076 INFO L226 Difference]: Without dead ends: 161 [2020-10-11 12:44:56,076 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 [2020-10-11 12:44:56,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2020-10-11 12:44:56,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 121. [2020-10-11 12:44:56,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-10-11 12:44:56,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 294 transitions. [2020-10-11 12:44:56,079 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 294 transitions. Word has length 12 [2020-10-11 12:44:56,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:44:56,080 INFO L481 AbstractCegarLoop]: Abstraction has 121 states and 294 transitions. [2020-10-11 12:44:56,080 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-11 12:44:56,080 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 294 transitions. [2020-10-11 12:44:56,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-11 12:44:56,080 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:44:56,080 INFO L421 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:44:56,289 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,46 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:44:56,290 INFO L429 AbstractCegarLoop]: === Iteration 54 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:44:56,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:44:56,290 INFO L82 PathProgramCache]: Analyzing trace with hash 1579174550, now seen corresponding path program 35 times [2020-10-11 12:44:56,291 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:44:56,291 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348201321] [2020-10-11 12:44:56,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:44:56,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:44:56,344 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:56,344 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348201321] [2020-10-11 12:44:56,344 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1196965354] [2020-10-11 12:44:56,345 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 [2020-10-11 12:44:56,381 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-11 12:44:56,382 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:44:56,382 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-11 12:44:56,383 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:44:56,483 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:56,483 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:44:56,483 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-11 12:44:56,483 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267928544] [2020-10-11 12:44:56,484 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-11 12:44:56,484 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:44:56,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-11 12:44:56,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2020-10-11 12:44:56,484 INFO L87 Difference]: Start difference. First operand 121 states and 294 transitions. Second operand 13 states. [2020-10-11 12:44:56,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:44:56,660 INFO L93 Difference]: Finished difference Result 163 states and 379 transitions. [2020-10-11 12:44:56,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-11 12:44:56,661 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-11 12:44:56,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:44:56,662 INFO L225 Difference]: With dead ends: 163 [2020-10-11 12:44:56,662 INFO L226 Difference]: Without dead ends: 161 [2020-10-11 12:44:56,662 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=104, Invalid=238, Unknown=0, NotChecked=0, Total=342 [2020-10-11 12:44:56,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2020-10-11 12:44:56,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 123. [2020-10-11 12:44:56,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-10-11 12:44:56,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 301 transitions. [2020-10-11 12:44:56,666 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 301 transitions. Word has length 12 [2020-10-11 12:44:56,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:44:56,666 INFO L481 AbstractCegarLoop]: Abstraction has 123 states and 301 transitions. [2020-10-11 12:44:56,666 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-11 12:44:56,667 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 301 transitions. [2020-10-11 12:44:56,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-11 12:44:56,667 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:44:56,667 INFO L421 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:44:56,877 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable53 [2020-10-11 12:44:56,878 INFO L429 AbstractCegarLoop]: === Iteration 55 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:44:56,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:44:56,878 INFO L82 PathProgramCache]: Analyzing trace with hash 1579837640, now seen corresponding path program 36 times [2020-10-11 12:44:56,879 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:44:56,879 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636529088] [2020-10-11 12:44:56,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:44:56,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:44:56,938 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:56,939 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636529088] [2020-10-11 12:44:56,939 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1221889487] [2020-10-11 12:44:56,939 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 [2020-10-11 12:44:56,977 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-10-11 12:44:56,977 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:44:56,980 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-11 12:44:56,981 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:44:57,074 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:57,074 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:44:57,074 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-11 12:44:57,075 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340336707] [2020-10-11 12:44:57,075 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-11 12:44:57,075 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:44:57,075 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-11 12:44:57,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-10-11 12:44:57,076 INFO L87 Difference]: Start difference. First operand 123 states and 301 transitions. Second operand 13 states. [2020-10-11 12:44:57,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:44:57,319 INFO L93 Difference]: Finished difference Result 170 states and 399 transitions. [2020-10-11 12:44:57,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-11 12:44:57,319 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-11 12:44:57,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:44:57,321 INFO L225 Difference]: With dead ends: 170 [2020-10-11 12:44:57,321 INFO L226 Difference]: Without dead ends: 168 [2020-10-11 12:44:57,321 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=149, Invalid=313, Unknown=0, NotChecked=0, Total=462 [2020-10-11 12:44:57,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2020-10-11 12:44:57,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 125. [2020-10-11 12:44:57,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-10-11 12:44:57,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 308 transitions. [2020-10-11 12:44:57,325 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 308 transitions. Word has length 12 [2020-10-11 12:44:57,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:44:57,325 INFO L481 AbstractCegarLoop]: Abstraction has 125 states and 308 transitions. [2020-10-11 12:44:57,325 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-11 12:44:57,325 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 308 transitions. [2020-10-11 12:44:57,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-11 12:44:57,325 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:44:57,326 INFO L421 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:44:57,526 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54,48 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:44:57,526 INFO L429 AbstractCegarLoop]: === Iteration 56 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:44:57,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:44:57,527 INFO L82 PathProgramCache]: Analyzing trace with hash 1579858999, now seen corresponding path program 37 times [2020-10-11 12:44:57,527 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:44:57,528 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713870867] [2020-10-11 12:44:57,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:44:57,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:44:57,580 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:57,580 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713870867] [2020-10-11 12:44:57,580 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1017240323] [2020-10-11 12:44:57,580 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 [2020-10-11 12:44:57,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:44:57,619 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-11 12:44:57,620 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:44:57,687 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-11 12:44:57,694 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:57,695 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:44:57,695 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-11 12:44:57,696 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610183485] [2020-10-11 12:44:57,696 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-11 12:44:57,696 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:44:57,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-11 12:44:57,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-11 12:44:57,697 INFO L87 Difference]: Start difference. First operand 125 states and 308 transitions. Second operand 13 states. [2020-10-11 12:44:57,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:44:57,993 INFO L93 Difference]: Finished difference Result 177 states and 424 transitions. [2020-10-11 12:44:57,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-11 12:44:57,994 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-11 12:44:57,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:44:57,995 INFO L225 Difference]: With dead ends: 177 [2020-10-11 12:44:57,995 INFO L226 Difference]: Without dead ends: 172 [2020-10-11 12:44:57,995 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 [2020-10-11 12:44:57,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2020-10-11 12:44:58,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 126. [2020-10-11 12:44:58,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2020-10-11 12:44:58,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 313 transitions. [2020-10-11 12:44:58,003 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 313 transitions. Word has length 12 [2020-10-11 12:44:58,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:44:58,003 INFO L481 AbstractCegarLoop]: Abstraction has 126 states and 313 transitions. [2020-10-11 12:44:58,003 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-11 12:44:58,003 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 313 transitions. [2020-10-11 12:44:58,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-11 12:44:58,004 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:44:58,004 INFO L421 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:44:58,212 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2020-10-11 12:44:58,212 INFO L429 AbstractCegarLoop]: === Iteration 57 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:44:58,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:44:58,213 INFO L82 PathProgramCache]: Analyzing trace with hash 1579859960, now seen corresponding path program 38 times [2020-10-11 12:44:58,213 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:44:58,213 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069832885] [2020-10-11 12:44:58,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:44:58,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:44:58,265 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:58,266 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069832885] [2020-10-11 12:44:58,266 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [212751651] [2020-10-11 12:44:58,266 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 [2020-10-11 12:44:58,304 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-11 12:44:58,304 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:44:58,305 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-11 12:44:58,305 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:44:58,384 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-11 12:44:58,402 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:58,403 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:44:58,403 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-11 12:44:58,403 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303292834] [2020-10-11 12:44:58,403 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-11 12:44:58,403 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:44:58,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-11 12:44:58,404 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-11 12:44:58,404 INFO L87 Difference]: Start difference. First operand 126 states and 313 transitions. Second operand 13 states. [2020-10-11 12:44:58,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:44:58,750 INFO L93 Difference]: Finished difference Result 190 states and 454 transitions. [2020-10-11 12:44:58,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-11 12:44:58,751 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-11 12:44:58,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:44:58,752 INFO L225 Difference]: With dead ends: 190 [2020-10-11 12:44:58,752 INFO L226 Difference]: Without dead ends: 182 [2020-10-11 12:44:58,752 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 [2020-10-11 12:44:58,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2020-10-11 12:44:58,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 121. [2020-10-11 12:44:58,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-10-11 12:44:58,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 297 transitions. [2020-10-11 12:44:58,756 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 297 transitions. Word has length 12 [2020-10-11 12:44:58,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:44:58,757 INFO L481 AbstractCegarLoop]: Abstraction has 121 states and 297 transitions. [2020-10-11 12:44:58,757 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-11 12:44:58,757 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 297 transitions. [2020-10-11 12:44:58,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-11 12:44:58,757 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:44:58,758 INFO L421 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:44:58,968 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2020-10-11 12:44:58,968 INFO L429 AbstractCegarLoop]: === Iteration 58 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:44:58,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:44:58,969 INFO L82 PathProgramCache]: Analyzing trace with hash 1579888790, now seen corresponding path program 39 times [2020-10-11 12:44:58,969 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:44:58,969 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551698538] [2020-10-11 12:44:58,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:44:58,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:44:59,021 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:59,021 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551698538] [2020-10-11 12:44:59,022 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [348621493] [2020-10-11 12:44:59,022 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 [2020-10-11 12:44:59,059 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-11 12:44:59,060 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:44:59,060 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-11 12:44:59,061 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:44:59,130 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-11 12:44:59,139 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:59,139 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:44:59,140 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-11 12:44:59,140 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623784975] [2020-10-11 12:44:59,140 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-11 12:44:59,140 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:44:59,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-11 12:44:59,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2020-10-11 12:44:59,141 INFO L87 Difference]: Start difference. First operand 121 states and 297 transitions. Second operand 13 states. [2020-10-11 12:44:59,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:44:59,471 INFO L93 Difference]: Finished difference Result 180 states and 427 transitions. [2020-10-11 12:44:59,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-11 12:44:59,472 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-11 12:44:59,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:44:59,474 INFO L225 Difference]: With dead ends: 180 [2020-10-11 12:44:59,474 INFO L226 Difference]: Without dead ends: 175 [2020-10-11 12:44:59,474 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 [2020-10-11 12:44:59,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2020-10-11 12:44:59,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 120. [2020-10-11 12:44:59,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-10-11 12:44:59,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 292 transitions. [2020-10-11 12:44:59,477 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 292 transitions. Word has length 12 [2020-10-11 12:44:59,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:44:59,477 INFO L481 AbstractCegarLoop]: Abstraction has 120 states and 292 transitions. [2020-10-11 12:44:59,477 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-11 12:44:59,478 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 292 transitions. [2020-10-11 12:44:59,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-11 12:44:59,478 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:44:59,478 INFO L421 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:44:59,678 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2020-10-11 12:44:59,679 INFO L429 AbstractCegarLoop]: === Iteration 59 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:44:59,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:44:59,679 INFO L82 PathProgramCache]: Analyzing trace with hash 1586324390, now seen corresponding path program 40 times [2020-10-11 12:44:59,680 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:44:59,680 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115384111] [2020-10-11 12:44:59,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:44:59,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:44:59,738 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:59,738 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115384111] [2020-10-11 12:44:59,738 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [607908523] [2020-10-11 12:44:59,739 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 [2020-10-11 12:44:59,793 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-11 12:44:59,794 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:44:59,795 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-11 12:44:59,796 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:44:59,951 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:44:59,951 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:44:59,952 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-11 12:44:59,952 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460702507] [2020-10-11 12:44:59,952 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-11 12:44:59,953 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:44:59,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-11 12:44:59,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2020-10-11 12:44:59,953 INFO L87 Difference]: Start difference. First operand 120 states and 292 transitions. Second operand 13 states. [2020-10-11 12:45:00,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:45:00,135 INFO L93 Difference]: Finished difference Result 164 states and 379 transitions. [2020-10-11 12:45:00,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-11 12:45:00,136 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-11 12:45:00,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:45:00,138 INFO L225 Difference]: With dead ends: 164 [2020-10-11 12:45:00,138 INFO L226 Difference]: Without dead ends: 162 [2020-10-11 12:45:00,138 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 [2020-10-11 12:45:00,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-10-11 12:45:00,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 121. [2020-10-11 12:45:00,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-10-11 12:45:00,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 295 transitions. [2020-10-11 12:45:00,147 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 295 transitions. Word has length 12 [2020-10-11 12:45:00,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:45:00,148 INFO L481 AbstractCegarLoop]: Abstraction has 121 states and 295 transitions. [2020-10-11 12:45:00,148 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-11 12:45:00,148 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 295 transitions. [2020-10-11 12:45:00,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-11 12:45:00,149 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:45:00,149 INFO L421 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:45:00,361 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2020-10-11 12:45:00,361 INFO L429 AbstractCegarLoop]: === Iteration 60 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:45:00,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:45:00,362 INFO L82 PathProgramCache]: Analyzing trace with hash 1586325351, now seen corresponding path program 41 times [2020-10-11 12:45:00,362 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:45:00,363 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436618744] [2020-10-11 12:45:00,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:45:00,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:45:00,444 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:45:00,444 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436618744] [2020-10-11 12:45:00,444 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [781468540] [2020-10-11 12:45:00,444 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 [2020-10-11 12:45:00,510 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-11 12:45:00,511 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:45:00,511 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-11 12:45:00,512 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:45:00,637 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:45:00,637 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:45:00,637 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-11 12:45:00,638 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609521602] [2020-10-11 12:45:00,638 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-11 12:45:00,638 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:45:00,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-11 12:45:00,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2020-10-11 12:45:00,638 INFO L87 Difference]: Start difference. First operand 121 states and 295 transitions. Second operand 13 states. [2020-10-11 12:45:00,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:45:00,764 INFO L93 Difference]: Finished difference Result 161 states and 372 transitions. [2020-10-11 12:45:00,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-11 12:45:00,765 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-11 12:45:00,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:45:00,766 INFO L225 Difference]: With dead ends: 161 [2020-10-11 12:45:00,766 INFO L226 Difference]: Without dead ends: 159 [2020-10-11 12:45:00,766 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 [2020-10-11 12:45:00,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2020-10-11 12:45:00,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 118. [2020-10-11 12:45:00,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-10-11 12:45:00,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 287 transitions. [2020-10-11 12:45:00,769 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 287 transitions. Word has length 12 [2020-10-11 12:45:00,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:45:00,771 INFO L481 AbstractCegarLoop]: Abstraction has 118 states and 287 transitions. [2020-10-11 12:45:00,771 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-11 12:45:00,771 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 287 transitions. [2020-10-11 12:45:00,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-11 12:45:00,772 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:45:00,772 INFO L421 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:45:00,980 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2020-10-11 12:45:00,981 INFO L429 AbstractCegarLoop]: === Iteration 61 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:45:00,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:45:00,981 INFO L82 PathProgramCache]: Analyzing trace with hash 1606880180, now seen corresponding path program 42 times [2020-10-11 12:45:00,982 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:45:00,982 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222714685] [2020-10-11 12:45:00,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:45:00,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:45:01,033 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:45:01,033 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222714685] [2020-10-11 12:45:01,033 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [528542325] [2020-10-11 12:45:01,033 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 [2020-10-11 12:45:01,107 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-11 12:45:01,107 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:45:01,108 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-11 12:45:01,109 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:45:01,203 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:45:01,203 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:45:01,203 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-11 12:45:01,203 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36335237] [2020-10-11 12:45:01,204 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-11 12:45:01,204 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:45:01,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-11 12:45:01,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2020-10-11 12:45:01,205 INFO L87 Difference]: Start difference. First operand 118 states and 287 transitions. Second operand 13 states. [2020-10-11 12:45:01,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:45:01,387 INFO L93 Difference]: Finished difference Result 165 states and 380 transitions. [2020-10-11 12:45:01,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-11 12:45:01,387 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-11 12:45:01,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:45:01,389 INFO L225 Difference]: With dead ends: 165 [2020-10-11 12:45:01,389 INFO L226 Difference]: Without dead ends: 163 [2020-10-11 12:45:01,389 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 [2020-10-11 12:45:01,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2020-10-11 12:45:01,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 118. [2020-10-11 12:45:01,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-10-11 12:45:01,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 290 transitions. [2020-10-11 12:45:01,393 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 290 transitions. Word has length 12 [2020-10-11 12:45:01,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:45:01,393 INFO L481 AbstractCegarLoop]: Abstraction has 118 states and 290 transitions. [2020-10-11 12:45:01,393 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-11 12:45:01,393 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 290 transitions. [2020-10-11 12:45:01,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-11 12:45:01,393 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:45:01,393 INFO L421 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:45:01,594 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable60 [2020-10-11 12:45:01,594 INFO L429 AbstractCegarLoop]: === Iteration 62 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:45:01,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:45:01,595 INFO L82 PathProgramCache]: Analyzing trace with hash 1606881141, now seen corresponding path program 43 times [2020-10-11 12:45:01,595 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:45:01,595 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383989371] [2020-10-11 12:45:01,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:45:01,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:45:01,650 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:45:01,650 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383989371] [2020-10-11 12:45:01,650 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1048143648] [2020-10-11 12:45:01,650 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 [2020-10-11 12:45:01,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:45:01,687 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-11 12:45:01,687 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:45:01,785 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:45:01,786 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:45:01,786 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-11 12:45:01,786 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666281460] [2020-10-11 12:45:01,786 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-11 12:45:01,787 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:45:01,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-11 12:45:01,787 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2020-10-11 12:45:01,787 INFO L87 Difference]: Start difference. First operand 118 states and 290 transitions. Second operand 13 states. [2020-10-11 12:45:01,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:45:01,985 INFO L93 Difference]: Finished difference Result 167 states and 384 transitions. [2020-10-11 12:45:01,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-11 12:45:01,986 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-11 12:45:01,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:45:01,987 INFO L225 Difference]: With dead ends: 167 [2020-10-11 12:45:01,987 INFO L226 Difference]: Without dead ends: 165 [2020-10-11 12:45:01,987 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 [2020-10-11 12:45:01,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2020-10-11 12:45:01,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 118. [2020-10-11 12:45:01,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-10-11 12:45:01,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 289 transitions. [2020-10-11 12:45:01,991 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 289 transitions. Word has length 12 [2020-10-11 12:45:01,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:45:01,991 INFO L481 AbstractCegarLoop]: Abstraction has 118 states and 289 transitions. [2020-10-11 12:45:01,991 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-11 12:45:01,991 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 289 transitions. [2020-10-11 12:45:01,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-11 12:45:01,992 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:45:01,992 INFO L421 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:45:02,196 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,55 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:45:02,197 INFO L429 AbstractCegarLoop]: === Iteration 63 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:45:02,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:45:02,197 INFO L82 PathProgramCache]: Analyzing trace with hash 1607543270, now seen corresponding path program 44 times [2020-10-11 12:45:02,197 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:45:02,198 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862968476] [2020-10-11 12:45:02,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:45:02,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:45:02,248 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:45:02,248 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862968476] [2020-10-11 12:45:02,249 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2030734590] [2020-10-11 12:45:02,249 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 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 [2020-10-11 12:45:02,294 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-11 12:45:02,295 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:45:02,295 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-11 12:45:02,296 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:45:02,380 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:45:02,380 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:45:02,381 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-11 12:45:02,381 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703222515] [2020-10-11 12:45:02,381 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-11 12:45:02,381 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:45:02,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-11 12:45:02,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2020-10-11 12:45:02,382 INFO L87 Difference]: Start difference. First operand 118 states and 289 transitions. Second operand 13 states. [2020-10-11 12:45:02,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:45:02,635 INFO L93 Difference]: Finished difference Result 168 states and 392 transitions. [2020-10-11 12:45:02,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-11 12:45:02,635 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-11 12:45:02,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:45:02,637 INFO L225 Difference]: With dead ends: 168 [2020-10-11 12:45:02,637 INFO L226 Difference]: Without dead ends: 166 [2020-10-11 12:45:02,638 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=157, Invalid=349, Unknown=0, NotChecked=0, Total=506 [2020-10-11 12:45:02,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-10-11 12:45:02,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 120. [2020-10-11 12:45:02,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-10-11 12:45:02,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 296 transitions. [2020-10-11 12:45:02,641 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 296 transitions. Word has length 12 [2020-10-11 12:45:02,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:45:02,641 INFO L481 AbstractCegarLoop]: Abstraction has 120 states and 296 transitions. [2020-10-11 12:45:02,641 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-11 12:45:02,641 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 296 transitions. [2020-10-11 12:45:02,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-11 12:45:02,642 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:45:02,642 INFO L421 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:45:02,842 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,56 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:45:02,843 INFO L429 AbstractCegarLoop]: === Iteration 64 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:45:02,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:45:02,843 INFO L82 PathProgramCache]: Analyzing trace with hash 1607564629, now seen corresponding path program 45 times [2020-10-11 12:45:02,843 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:45:02,844 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420286793] [2020-10-11 12:45:02,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:45:02,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:45:02,903 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:45:02,903 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420286793] [2020-10-11 12:45:02,903 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [769354481] [2020-10-11 12:45:02,904 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 [2020-10-11 12:45:02,941 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-11 12:45:02,942 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:45:02,942 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-11 12:45:02,943 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:45:03,018 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-11 12:45:03,026 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:45:03,026 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:45:03,027 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-11 12:45:03,027 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966875891] [2020-10-11 12:45:03,027 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-11 12:45:03,028 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:45:03,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-11 12:45:03,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-11 12:45:03,028 INFO L87 Difference]: Start difference. First operand 120 states and 296 transitions. Second operand 13 states. [2020-10-11 12:45:03,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:45:03,242 INFO L93 Difference]: Finished difference Result 160 states and 384 transitions. [2020-10-11 12:45:03,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-11 12:45:03,243 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-11 12:45:03,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:45:03,244 INFO L225 Difference]: With dead ends: 160 [2020-10-11 12:45:03,244 INFO L226 Difference]: Without dead ends: 155 [2020-10-11 12:45:03,245 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 [2020-10-11 12:45:03,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2020-10-11 12:45:03,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 121. [2020-10-11 12:45:03,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-10-11 12:45:03,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 301 transitions. [2020-10-11 12:45:03,247 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 301 transitions. Word has length 12 [2020-10-11 12:45:03,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:45:03,248 INFO L481 AbstractCegarLoop]: Abstraction has 121 states and 301 transitions. [2020-10-11 12:45:03,248 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-11 12:45:03,248 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 301 transitions. [2020-10-11 12:45:03,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-11 12:45:03,248 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:45:03,249 INFO L421 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:45:03,450 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63,57 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:45:03,451 INFO L429 AbstractCegarLoop]: === Iteration 65 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:45:03,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:45:03,451 INFO L82 PathProgramCache]: Analyzing trace with hash 1607565590, now seen corresponding path program 46 times [2020-10-11 12:45:03,451 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:45:03,452 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580412125] [2020-10-11 12:45:03,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:45:03,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:45:03,508 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:45:03,508 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580412125] [2020-10-11 12:45:03,508 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [160583365] [2020-10-11 12:45:03,509 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 [2020-10-11 12:45:03,558 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-11 12:45:03,558 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:45:03,559 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-11 12:45:03,560 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:45:03,638 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-11 12:45:03,674 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:45:03,674 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:45:03,675 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-11 12:45:03,675 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279977959] [2020-10-11 12:45:03,675 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-11 12:45:03,676 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:45:03,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-11 12:45:03,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2020-10-11 12:45:03,676 INFO L87 Difference]: Start difference. First operand 121 states and 301 transitions. Second operand 13 states. [2020-10-11 12:45:03,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:45:03,990 INFO L93 Difference]: Finished difference Result 189 states and 444 transitions. [2020-10-11 12:45:03,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-11 12:45:03,990 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-11 12:45:03,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:45:03,992 INFO L225 Difference]: With dead ends: 189 [2020-10-11 12:45:03,992 INFO L226 Difference]: Without dead ends: 181 [2020-10-11 12:45:03,992 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=195, Invalid=405, Unknown=0, NotChecked=0, Total=600 [2020-10-11 12:45:03,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2020-10-11 12:45:03,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 118. [2020-10-11 12:45:03,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-10-11 12:45:03,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 289 transitions. [2020-10-11 12:45:03,996 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 289 transitions. Word has length 12 [2020-10-11 12:45:03,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:45:03,996 INFO L481 AbstractCegarLoop]: Abstraction has 118 states and 289 transitions. [2020-10-11 12:45:03,997 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-11 12:45:03,997 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 289 transitions. [2020-10-11 12:45:03,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-11 12:45:03,997 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:45:03,997 INFO L421 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:45:04,201 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64,58 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:45:04,202 INFO L429 AbstractCegarLoop]: === Iteration 66 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:45:04,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:45:04,202 INFO L82 PathProgramCache]: Analyzing trace with hash 1607573061, now seen corresponding path program 47 times [2020-10-11 12:45:04,202 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:45:04,203 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172398356] [2020-10-11 12:45:04,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:45:04,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:45:04,257 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:45:04,258 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172398356] [2020-10-11 12:45:04,258 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1151494823] [2020-10-11 12:45:04,258 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 [2020-10-11 12:45:04,293 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-11 12:45:04,293 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:45:04,294 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-11 12:45:04,294 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:45:04,370 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:45:04,371 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:45:04,371 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-11 12:45:04,371 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142250141] [2020-10-11 12:45:04,372 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-11 12:45:04,372 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:45:04,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-11 12:45:04,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-10-11 12:45:04,372 INFO L87 Difference]: Start difference. First operand 118 states and 289 transitions. Second operand 13 states. [2020-10-11 12:45:04,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:45:04,621 INFO L93 Difference]: Finished difference Result 169 states and 393 transitions. [2020-10-11 12:45:04,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-11 12:45:04,622 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-11 12:45:04,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:45:04,623 INFO L225 Difference]: With dead ends: 169 [2020-10-11 12:45:04,624 INFO L226 Difference]: Without dead ends: 167 [2020-10-11 12:45:04,624 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 [2020-10-11 12:45:04,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2020-10-11 12:45:04,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 120. [2020-10-11 12:45:04,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-10-11 12:45:04,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 296 transitions. [2020-10-11 12:45:04,627 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 296 transitions. Word has length 12 [2020-10-11 12:45:04,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:45:04,627 INFO L481 AbstractCegarLoop]: Abstraction has 120 states and 296 transitions. [2020-10-11 12:45:04,628 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-11 12:45:04,628 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 296 transitions. [2020-10-11 12:45:04,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-11 12:45:04,628 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:45:04,628 INFO L421 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:45:04,829 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable65 [2020-10-11 12:45:04,829 INFO L429 AbstractCegarLoop]: === Iteration 67 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:45:04,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:45:04,830 INFO L82 PathProgramCache]: Analyzing trace with hash 1607594420, now seen corresponding path program 48 times [2020-10-11 12:45:04,830 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:45:04,831 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817049593] [2020-10-11 12:45:04,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:45:04,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:45:04,885 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:45:04,885 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817049593] [2020-10-11 12:45:04,886 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [280283860] [2020-10-11 12:45:04,886 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 [2020-10-11 12:45:04,932 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-10-11 12:45:04,932 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:45:04,933 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-11 12:45:04,934 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:45:05,001 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-11 12:45:05,008 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:45:05,009 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:45:05,009 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-11 12:45:05,009 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436515866] [2020-10-11 12:45:05,010 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-11 12:45:05,010 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:45:05,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-11 12:45:05,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-11 12:45:05,010 INFO L87 Difference]: Start difference. First operand 120 states and 296 transitions. Second operand 13 states. [2020-10-11 12:45:05,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:45:05,352 INFO L93 Difference]: Finished difference Result 192 states and 454 transitions. [2020-10-11 12:45:05,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-11 12:45:05,353 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-11 12:45:05,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:45:05,354 INFO L225 Difference]: With dead ends: 192 [2020-10-11 12:45:05,354 INFO L226 Difference]: Without dead ends: 184 [2020-10-11 12:45:05,355 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 [2020-10-11 12:45:05,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2020-10-11 12:45:05,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 119. [2020-10-11 12:45:05,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-10-11 12:45:05,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 287 transitions. [2020-10-11 12:45:05,358 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 287 transitions. Word has length 12 [2020-10-11 12:45:05,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:45:05,358 INFO L481 AbstractCegarLoop]: Abstraction has 119 states and 287 transitions. [2020-10-11 12:45:05,358 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-11 12:45:05,358 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 287 transitions. [2020-10-11 12:45:05,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-11 12:45:05,359 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:45:05,359 INFO L421 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:45:05,559 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66,60 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:45:05,559 INFO L429 AbstractCegarLoop]: === Iteration 68 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:45:05,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:45:05,560 INFO L82 PathProgramCache]: Analyzing trace with hash 1607595381, now seen corresponding path program 49 times [2020-10-11 12:45:05,560 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:45:05,560 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760979563] [2020-10-11 12:45:05,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:45:05,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:45:05,614 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:45:05,614 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760979563] [2020-10-11 12:45:05,615 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [88270778] [2020-10-11 12:45:05,615 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 [2020-10-11 12:45:05,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:45:05,675 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-11 12:45:05,676 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:45:05,775 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-11 12:45:05,786 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:45:05,787 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:45:05,787 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-11 12:45:05,787 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437051301] [2020-10-11 12:45:05,787 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-11 12:45:05,787 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:45:05,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-11 12:45:05,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-11 12:45:05,788 INFO L87 Difference]: Start difference. First operand 119 states and 287 transitions. Second operand 13 states. [2020-10-11 12:45:06,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:45:06,103 INFO L93 Difference]: Finished difference Result 180 states and 420 transitions. [2020-10-11 12:45:06,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-11 12:45:06,103 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-11 12:45:06,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:45:06,104 INFO L225 Difference]: With dead ends: 180 [2020-10-11 12:45:06,104 INFO L226 Difference]: Without dead ends: 175 [2020-10-11 12:45:06,105 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 [2020-10-11 12:45:06,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2020-10-11 12:45:06,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 114. [2020-10-11 12:45:06,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-10-11 12:45:06,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 268 transitions. [2020-10-11 12:45:06,108 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 268 transitions. Word has length 12 [2020-10-11 12:45:06,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:45:06,108 INFO L481 AbstractCegarLoop]: Abstraction has 114 states and 268 transitions. [2020-10-11 12:45:06,108 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-11 12:45:06,108 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 268 transitions. [2020-10-11 12:45:06,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-11 12:45:06,108 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:45:06,108 INFO L421 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:45:06,309 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 61 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable67 [2020-10-11 12:45:06,310 INFO L429 AbstractCegarLoop]: === Iteration 69 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:45:06,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:45:06,310 INFO L82 PathProgramCache]: Analyzing trace with hash -655922238, now seen corresponding path program 5 times [2020-10-11 12:45:06,311 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:45:06,311 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106194526] [2020-10-11 12:45:06,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:45:06,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:45:06,381 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:45:06,381 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106194526] [2020-10-11 12:45:06,381 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1630916388] [2020-10-11 12:45:06,382 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 [2020-10-11 12:45:06,421 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-11 12:45:06,422 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:45:06,422 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-11 12:45:06,423 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:45:06,521 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-11 12:45:06,542 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:45:06,542 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:45:06,542 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-11 12:45:06,543 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586367695] [2020-10-11 12:45:06,543 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-11 12:45:06,543 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:45:06,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-11 12:45:06,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2020-10-11 12:45:06,543 INFO L87 Difference]: Start difference. First operand 114 states and 268 transitions. Second operand 16 states. [2020-10-11 12:45:06,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:45:06,683 INFO L93 Difference]: Finished difference Result 164 states and 382 transitions. [2020-10-11 12:45:06,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-11 12:45:06,684 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 12 [2020-10-11 12:45:06,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:45:06,685 INFO L225 Difference]: With dead ends: 164 [2020-10-11 12:45:06,685 INFO L226 Difference]: Without dead ends: 159 [2020-10-11 12:45:06,685 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 [2020-10-11 12:45:06,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2020-10-11 12:45:06,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 122. [2020-10-11 12:45:06,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-10-11 12:45:06,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 299 transitions. [2020-10-11 12:45:06,688 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 299 transitions. Word has length 12 [2020-10-11 12:45:06,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:45:06,688 INFO L481 AbstractCegarLoop]: Abstraction has 122 states and 299 transitions. [2020-10-11 12:45:06,688 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-11 12:45:06,688 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 299 transitions. [2020-10-11 12:45:06,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-11 12:45:06,688 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:45:06,689 INFO L421 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:45:06,894 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68,62 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:45:06,895 INFO L429 AbstractCegarLoop]: === Iteration 70 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:45:06,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:45:06,895 INFO L82 PathProgramCache]: Analyzing trace with hash 1940751883, now seen corresponding path program 15 times [2020-10-11 12:45:06,895 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:45:06,896 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571171802] [2020-10-11 12:45:06,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:45:06,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:45:07,005 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:45:07,006 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571171802] [2020-10-11 12:45:07,006 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1916459369] [2020-10-11 12:45:07,006 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 [2020-10-11 12:45:07,041 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-11 12:45:07,041 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:45:07,041 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-11 12:45:07,042 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:45:07,163 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:45:07,164 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:45:07,164 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-11 12:45:07,164 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259688846] [2020-10-11 12:45:07,165 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-11 12:45:07,165 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:45:07,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-11 12:45:07,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2020-10-11 12:45:07,165 INFO L87 Difference]: Start difference. First operand 122 states and 299 transitions. Second operand 15 states. [2020-10-11 12:45:07,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:45:07,212 INFO L93 Difference]: Finished difference Result 156 states and 367 transitions. [2020-10-11 12:45:07,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-11 12:45:07,213 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 12 [2020-10-11 12:45:07,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:45:07,214 INFO L225 Difference]: With dead ends: 156 [2020-10-11 12:45:07,214 INFO L226 Difference]: Without dead ends: 153 [2020-10-11 12:45:07,215 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 [2020-10-11 12:45:07,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2020-10-11 12:45:07,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 129. [2020-10-11 12:45:07,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2020-10-11 12:45:07,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 315 transitions. [2020-10-11 12:45:07,218 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 315 transitions. Word has length 12 [2020-10-11 12:45:07,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:45:07,218 INFO L481 AbstractCegarLoop]: Abstraction has 129 states and 315 transitions. [2020-10-11 12:45:07,219 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-11 12:45:07,219 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 315 transitions. [2020-10-11 12:45:07,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-11 12:45:07,219 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:45:07,219 INFO L421 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:45:07,419 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable69 [2020-10-11 12:45:07,420 INFO L429 AbstractCegarLoop]: === Iteration 71 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:45:07,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:45:07,420 INFO L82 PathProgramCache]: Analyzing trace with hash 1078904123, now seen corresponding path program 16 times [2020-10-11 12:45:07,421 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:45:07,421 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717153146] [2020-10-11 12:45:07,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:45:07,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:45:07,517 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:45:07,517 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717153146] [2020-10-11 12:45:07,517 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1865860617] [2020-10-11 12:45:07,518 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 [2020-10-11 12:45:07,553 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-11 12:45:07,554 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:45:07,554 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-11 12:45:07,555 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:45:07,666 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:45:07,666 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:45:07,666 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-11 12:45:07,666 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697012525] [2020-10-11 12:45:07,667 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-11 12:45:07,667 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:45:07,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-11 12:45:07,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2020-10-11 12:45:07,668 INFO L87 Difference]: Start difference. First operand 129 states and 315 transitions. Second operand 15 states. [2020-10-11 12:45:07,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:45:07,730 INFO L93 Difference]: Finished difference Result 170 states and 394 transitions. [2020-10-11 12:45:07,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-11 12:45:07,731 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 12 [2020-10-11 12:45:07,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:45:07,732 INFO L225 Difference]: With dead ends: 170 [2020-10-11 12:45:07,733 INFO L226 Difference]: Without dead ends: 167 [2020-10-11 12:45:07,733 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=167, Unknown=0, NotChecked=0, Total=240 [2020-10-11 12:45:07,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2020-10-11 12:45:07,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 129. [2020-10-11 12:45:07,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2020-10-11 12:45:07,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 315 transitions. [2020-10-11 12:45:07,736 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 315 transitions. Word has length 12 [2020-10-11 12:45:07,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:45:07,736 INFO L481 AbstractCegarLoop]: Abstraction has 129 states and 315 transitions. [2020-10-11 12:45:07,736 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-11 12:45:07,736 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 315 transitions. [2020-10-11 12:45:07,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-11 12:45:07,737 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:45:07,737 INFO L421 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:45:07,939 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,64 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:45:07,939 INFO L429 AbstractCegarLoop]: === Iteration 72 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:45:07,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:45:07,940 INFO L82 PathProgramCache]: Analyzing trace with hash 1743839243, now seen corresponding path program 17 times [2020-10-11 12:45:07,940 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:45:07,940 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438112213] [2020-10-11 12:45:07,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:45:07,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:45:08,026 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:45:08,027 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438112213] [2020-10-11 12:45:08,027 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1176875654] [2020-10-11 12:45:08,027 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 [2020-10-11 12:45:08,067 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-11 12:45:08,067 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:45:08,068 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-11 12:45:08,068 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:45:08,174 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:45:08,175 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:45:08,175 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-11 12:45:08,175 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286170410] [2020-10-11 12:45:08,176 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-11 12:45:08,176 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:45:08,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-11 12:45:08,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2020-10-11 12:45:08,176 INFO L87 Difference]: Start difference. First operand 129 states and 315 transitions. Second operand 15 states. [2020-10-11 12:45:08,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:45:08,259 INFO L93 Difference]: Finished difference Result 169 states and 394 transitions. [2020-10-11 12:45:08,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-11 12:45:08,260 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 12 [2020-10-11 12:45:08,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:45:08,261 INFO L225 Difference]: With dead ends: 169 [2020-10-11 12:45:08,261 INFO L226 Difference]: Without dead ends: 166 [2020-10-11 12:45:08,261 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 [2020-10-11 12:45:08,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-10-11 12:45:08,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 130. [2020-10-11 12:45:08,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-10-11 12:45:08,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 320 transitions. [2020-10-11 12:45:08,264 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 320 transitions. Word has length 12 [2020-10-11 12:45:08,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:45:08,265 INFO L481 AbstractCegarLoop]: Abstraction has 130 states and 320 transitions. [2020-10-11 12:45:08,265 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-11 12:45:08,265 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 320 transitions. [2020-10-11 12:45:08,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-11 12:45:08,265 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:45:08,266 INFO L421 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:45:08,474 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71,65 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:45:08,475 INFO L429 AbstractCegarLoop]: === Iteration 73 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:45:08,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:45:08,476 INFO L82 PathProgramCache]: Analyzing trace with hash 1765288763, now seen corresponding path program 18 times [2020-10-11 12:45:08,476 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:45:08,476 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361003754] [2020-10-11 12:45:08,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:45:08,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:45:08,548 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:45:08,548 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361003754] [2020-10-11 12:45:08,549 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1431236419] [2020-10-11 12:45:08,549 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 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 [2020-10-11 12:45:08,594 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-11 12:45:08,594 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:45:08,595 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-11 12:45:08,598 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:45:08,710 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:45:08,711 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:45:08,711 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-11 12:45:08,711 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466718764] [2020-10-11 12:45:08,711 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-11 12:45:08,711 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:45:08,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-11 12:45:08,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2020-10-11 12:45:08,712 INFO L87 Difference]: Start difference. First operand 130 states and 320 transitions. Second operand 15 states. [2020-10-11 12:45:08,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:45:08,816 INFO L93 Difference]: Finished difference Result 168 states and 394 transitions. [2020-10-11 12:45:08,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-11 12:45:08,816 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 12 [2020-10-11 12:45:08,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:45:08,818 INFO L225 Difference]: With dead ends: 168 [2020-10-11 12:45:08,818 INFO L226 Difference]: Without dead ends: 165 [2020-10-11 12:45:08,818 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 [2020-10-11 12:45:08,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2020-10-11 12:45:08,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 132. [2020-10-11 12:45:08,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-10-11 12:45:08,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 327 transitions. [2020-10-11 12:45:08,824 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 327 transitions. Word has length 12 [2020-10-11 12:45:08,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:45:08,824 INFO L481 AbstractCegarLoop]: Abstraction has 132 states and 327 transitions. [2020-10-11 12:45:08,824 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-11 12:45:08,824 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 327 transitions. [2020-10-11 12:45:08,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-11 12:45:08,825 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:45:08,825 INFO L421 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:45:09,032 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable72 [2020-10-11 12:45:09,032 INFO L429 AbstractCegarLoop]: === Iteration 74 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:45:09,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:45:09,033 INFO L82 PathProgramCache]: Analyzing trace with hash 1765980683, now seen corresponding path program 19 times [2020-10-11 12:45:09,033 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:45:09,034 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544513206] [2020-10-11 12:45:09,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:45:09,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:45:09,123 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:45:09,123 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544513206] [2020-10-11 12:45:09,123 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1804241019] [2020-10-11 12:45:09,124 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 [2020-10-11 12:45:09,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:45:09,161 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-11 12:45:09,162 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:45:09,283 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:45:09,283 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:45:09,283 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-11 12:45:09,284 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097795104] [2020-10-11 12:45:09,284 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-11 12:45:09,284 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:45:09,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-11 12:45:09,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2020-10-11 12:45:09,285 INFO L87 Difference]: Start difference. First operand 132 states and 327 transitions. Second operand 15 states. [2020-10-11 12:45:09,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:45:09,437 INFO L93 Difference]: Finished difference Result 167 states and 394 transitions. [2020-10-11 12:45:09,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-11 12:45:09,437 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 12 [2020-10-11 12:45:09,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:45:09,439 INFO L225 Difference]: With dead ends: 167 [2020-10-11 12:45:09,439 INFO L226 Difference]: Without dead ends: 164 [2020-10-11 12:45:09,439 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 [2020-10-11 12:45:09,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2020-10-11 12:45:09,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 134. [2020-10-11 12:45:09,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-10-11 12:45:09,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 334 transitions. [2020-10-11 12:45:09,442 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 334 transitions. Word has length 12 [2020-10-11 12:45:09,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:45:09,442 INFO L481 AbstractCegarLoop]: Abstraction has 134 states and 334 transitions. [2020-10-11 12:45:09,442 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-11 12:45:09,442 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 334 transitions. [2020-10-11 12:45:09,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-11 12:45:09,442 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:45:09,442 INFO L421 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:45:09,643 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73,67 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:45:09,643 INFO L429 AbstractCegarLoop]: === Iteration 75 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:45:09,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:45:09,644 INFO L82 PathProgramCache]: Analyzing trace with hash 1766003003, now seen corresponding path program 20 times [2020-10-11 12:45:09,644 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:45:09,644 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780400225] [2020-10-11 12:45:09,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:45:09,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:45:09,710 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:45:09,711 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780400225] [2020-10-11 12:45:09,711 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1150997691] [2020-10-11 12:45:09,711 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 [2020-10-11 12:45:09,747 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-11 12:45:09,747 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:45:09,748 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-11 12:45:09,748 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:45:09,850 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-11 12:45:09,864 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:45:09,864 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:45:09,864 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-11 12:45:09,865 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295414808] [2020-10-11 12:45:09,865 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-11 12:45:09,865 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:45:09,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-11 12:45:09,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2020-10-11 12:45:09,865 INFO L87 Difference]: Start difference. First operand 134 states and 334 transitions. Second operand 15 states. [2020-10-11 12:45:10,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:45:10,073 INFO L93 Difference]: Finished difference Result 176 states and 418 transitions. [2020-10-11 12:45:10,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-11 12:45:10,074 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 12 [2020-10-11 12:45:10,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:45:10,075 INFO L225 Difference]: With dead ends: 176 [2020-10-11 12:45:10,076 INFO L226 Difference]: Without dead ends: 170 [2020-10-11 12:45:10,076 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 [2020-10-11 12:45:10,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2020-10-11 12:45:10,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 132. [2020-10-11 12:45:10,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-10-11 12:45:10,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 332 transitions. [2020-10-11 12:45:10,080 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 332 transitions. Word has length 12 [2020-10-11 12:45:10,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:45:10,080 INFO L481 AbstractCegarLoop]: Abstraction has 132 states and 332 transitions. [2020-10-11 12:45:10,080 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-11 12:45:10,080 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 332 transitions. [2020-10-11 12:45:10,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-11 12:45:10,081 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:45:10,081 INFO L421 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:45:10,281 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74,68 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:45:10,282 INFO L429 AbstractCegarLoop]: === Iteration 76 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:45:10,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:45:10,282 INFO L82 PathProgramCache]: Analyzing trace with hash -1530333459, now seen corresponding path program 50 times [2020-10-11 12:45:10,282 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:45:10,283 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142757432] [2020-10-11 12:45:10,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:45:10,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:45:10,393 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:45:10,394 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142757432] [2020-10-11 12:45:10,394 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1409092208] [2020-10-11 12:45:10,394 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 [2020-10-11 12:45:10,458 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-11 12:45:10,458 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:45:10,459 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-11 12:45:10,461 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:45:10,629 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:45:10,630 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:45:10,630 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-11 12:45:10,630 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047210641] [2020-10-11 12:45:10,631 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-11 12:45:10,631 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:45:10,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-11 12:45:10,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2020-10-11 12:45:10,632 INFO L87 Difference]: Start difference. First operand 132 states and 332 transitions. Second operand 15 states. [2020-10-11 12:45:10,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:45:10,703 INFO L93 Difference]: Finished difference Result 163 states and 394 transitions. [2020-10-11 12:45:10,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-11 12:45:10,704 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-11 12:45:10,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:45:10,706 INFO L225 Difference]: With dead ends: 163 [2020-10-11 12:45:10,706 INFO L226 Difference]: Without dead ends: 161 [2020-10-11 12:45:10,706 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 [2020-10-11 12:45:10,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2020-10-11 12:45:10,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 138. [2020-10-11 12:45:10,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-10-11 12:45:10,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 350 transitions. [2020-10-11 12:45:10,711 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 350 transitions. Word has length 13 [2020-10-11 12:45:10,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:45:10,712 INFO L481 AbstractCegarLoop]: Abstraction has 138 states and 350 transitions. [2020-10-11 12:45:10,712 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-11 12:45:10,712 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 350 transitions. [2020-10-11 12:45:10,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-11 12:45:10,713 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:45:10,713 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:45:10,926 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable75 [2020-10-11 12:45:10,926 INFO L429 AbstractCegarLoop]: === Iteration 77 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:45:10,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:45:10,927 INFO L82 PathProgramCache]: Analyzing trace with hash -1530332498, now seen corresponding path program 51 times [2020-10-11 12:45:10,927 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:45:10,927 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708304376] [2020-10-11 12:45:10,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:45:10,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:45:11,005 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:45:11,005 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708304376] [2020-10-11 12:45:11,006 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1843380162] [2020-10-11 12:45:11,006 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 [2020-10-11 12:45:11,045 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-11 12:45:11,045 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:45:11,046 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-11 12:45:11,047 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:45:11,165 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:45:11,166 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:45:11,166 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-11 12:45:11,166 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653706757] [2020-10-11 12:45:11,167 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-11 12:45:11,167 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:45:11,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-11 12:45:11,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2020-10-11 12:45:11,167 INFO L87 Difference]: Start difference. First operand 138 states and 350 transitions. Second operand 15 states. [2020-10-11 12:45:11,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:45:11,311 INFO L93 Difference]: Finished difference Result 172 states and 412 transitions. [2020-10-11 12:45:11,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-11 12:45:11,312 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-11 12:45:11,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:45:11,313 INFO L225 Difference]: With dead ends: 172 [2020-10-11 12:45:11,313 INFO L226 Difference]: Without dead ends: 170 [2020-10-11 12:45:11,313 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 [2020-10-11 12:45:11,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2020-10-11 12:45:11,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 136. [2020-10-11 12:45:11,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-10-11 12:45:11,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 344 transitions. [2020-10-11 12:45:11,318 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 344 transitions. Word has length 13 [2020-10-11 12:45:11,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:45:11,319 INFO L481 AbstractCegarLoop]: Abstraction has 136 states and 344 transitions. [2020-10-11 12:45:11,319 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-11 12:45:11,319 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 344 transitions. [2020-10-11 12:45:11,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-11 12:45:11,319 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:45:11,319 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:45:11,528 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76,70 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:45:11,529 INFO L429 AbstractCegarLoop]: === Iteration 78 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:45:11,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:45:11,529 INFO L82 PathProgramCache]: Analyzing trace with hash -1530303668, now seen corresponding path program 52 times [2020-10-11 12:45:11,529 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:45:11,530 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042882381] [2020-10-11 12:45:11,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:45:11,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:45:11,601 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:45:11,601 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042882381] [2020-10-11 12:45:11,601 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1702558873] [2020-10-11 12:45:11,601 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 [2020-10-11 12:45:11,652 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-11 12:45:11,652 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:45:11,653 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-11 12:45:11,654 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:45:11,849 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:45:11,849 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:45:11,849 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-11 12:45:11,849 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770834628] [2020-10-11 12:45:11,850 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-11 12:45:11,850 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:45:11,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-11 12:45:11,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2020-10-11 12:45:11,850 INFO L87 Difference]: Start difference. First operand 136 states and 344 transitions. Second operand 15 states. [2020-10-11 12:45:12,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:45:12,035 INFO L93 Difference]: Finished difference Result 179 states and 426 transitions. [2020-10-11 12:45:12,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-11 12:45:12,035 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-11 12:45:12,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:45:12,036 INFO L225 Difference]: With dead ends: 179 [2020-10-11 12:45:12,036 INFO L226 Difference]: Without dead ends: 177 [2020-10-11 12:45:12,037 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=132, Invalid=248, Unknown=0, NotChecked=0, Total=380 [2020-10-11 12:45:12,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2020-10-11 12:45:12,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 134. [2020-10-11 12:45:12,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-10-11 12:45:12,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 338 transitions. [2020-10-11 12:45:12,042 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 338 transitions. Word has length 13 [2020-10-11 12:45:12,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:45:12,042 INFO L481 AbstractCegarLoop]: Abstraction has 134 states and 338 transitions. [2020-10-11 12:45:12,042 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-11 12:45:12,042 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 338 transitions. [2020-10-11 12:45:12,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-11 12:45:12,043 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:45:12,043 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:45:12,251 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 71 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable77 [2020-10-11 12:45:12,252 INFO L429 AbstractCegarLoop]: === Iteration 79 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:45:12,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:45:12,252 INFO L82 PathProgramCache]: Analyzing trace with hash -1529409938, now seen corresponding path program 53 times [2020-10-11 12:45:12,252 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:45:12,253 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724360575] [2020-10-11 12:45:12,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:45:12,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:45:12,331 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:45:12,332 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724360575] [2020-10-11 12:45:12,332 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [676829970] [2020-10-11 12:45:12,332 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 [2020-10-11 12:45:12,371 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-11 12:45:12,371 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:45:12,372 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-11 12:45:12,372 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:45:12,493 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:45:12,494 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:45:12,494 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-11 12:45:12,494 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17076187] [2020-10-11 12:45:12,494 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-11 12:45:12,494 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:45:12,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-11 12:45:12,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2020-10-11 12:45:12,495 INFO L87 Difference]: Start difference. First operand 134 states and 338 transitions. Second operand 15 states. [2020-10-11 12:45:12,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:45:12,673 INFO L93 Difference]: Finished difference Result 179 states and 426 transitions. [2020-10-11 12:45:12,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-11 12:45:12,673 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-11 12:45:12,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:45:12,675 INFO L225 Difference]: With dead ends: 179 [2020-10-11 12:45:12,675 INFO L226 Difference]: Without dead ends: 177 [2020-10-11 12:45:12,675 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 [2020-10-11 12:45:12,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2020-10-11 12:45:12,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 136. [2020-10-11 12:45:12,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-10-11 12:45:12,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 344 transitions. [2020-10-11 12:45:12,679 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 344 transitions. Word has length 13 [2020-10-11 12:45:12,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:45:12,680 INFO L481 AbstractCegarLoop]: Abstraction has 136 states and 344 transitions. [2020-10-11 12:45:12,680 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-11 12:45:12,680 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 344 transitions. [2020-10-11 12:45:12,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-11 12:45:12,680 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:45:12,681 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:45:12,891 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 72 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable78 [2020-10-11 12:45:12,891 INFO L429 AbstractCegarLoop]: === Iteration 80 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:45:12,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:45:12,892 INFO L82 PathProgramCache]: Analyzing trace with hash -1529408977, now seen corresponding path program 54 times [2020-10-11 12:45:12,892 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:45:12,892 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457239226] [2020-10-11 12:45:12,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:45:12,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:45:12,967 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:45:12,967 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457239226] [2020-10-11 12:45:12,968 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1461262584] [2020-10-11 12:45:12,968 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 [2020-10-11 12:45:13,013 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-10-11 12:45:13,013 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:45:13,014 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-11 12:45:13,015 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:45:13,106 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:45:13,107 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:45:13,107 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-11 12:45:13,107 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871179181] [2020-10-11 12:45:13,107 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-11 12:45:13,108 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:45:13,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-11 12:45:13,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2020-10-11 12:45:13,108 INFO L87 Difference]: Start difference. First operand 136 states and 344 transitions. Second operand 15 states. [2020-10-11 12:45:13,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:45:13,300 INFO L93 Difference]: Finished difference Result 184 states and 436 transitions. [2020-10-11 12:45:13,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-11 12:45:13,300 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-11 12:45:13,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:45:13,302 INFO L225 Difference]: With dead ends: 184 [2020-10-11 12:45:13,302 INFO L226 Difference]: Without dead ends: 182 [2020-10-11 12:45:13,302 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 [2020-10-11 12:45:13,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2020-10-11 12:45:13,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 136. [2020-10-11 12:45:13,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-10-11 12:45:13,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 342 transitions. [2020-10-11 12:45:13,305 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 342 transitions. Word has length 13 [2020-10-11 12:45:13,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:45:13,305 INFO L481 AbstractCegarLoop]: Abstraction has 136 states and 342 transitions. [2020-10-11 12:45:13,305 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-11 12:45:13,306 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 342 transitions. [2020-10-11 12:45:13,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-11 12:45:13,306 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:45:13,306 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:45:13,506 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 73 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable79 [2020-10-11 12:45:13,507 INFO L429 AbstractCegarLoop]: === Iteration 81 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:45:13,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:45:13,507 INFO L82 PathProgramCache]: Analyzing trace with hash -1529380147, now seen corresponding path program 55 times [2020-10-11 12:45:13,508 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:45:13,508 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127688746] [2020-10-11 12:45:13,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:45:13,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:45:13,589 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:45:13,589 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127688746] [2020-10-11 12:45:13,590 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1255490690] [2020-10-11 12:45:13,590 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 [2020-10-11 12:45:13,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:45:13,629 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-11 12:45:13,629 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:45:13,745 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:45:13,745 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:45:13,745 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-11 12:45:13,746 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687115588] [2020-10-11 12:45:13,746 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-11 12:45:13,746 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:45:13,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-11 12:45:13,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2020-10-11 12:45:13,747 INFO L87 Difference]: Start difference. First operand 136 states and 342 transitions. Second operand 15 states. [2020-10-11 12:45:13,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:45:13,949 INFO L93 Difference]: Finished difference Result 179 states and 427 transitions. [2020-10-11 12:45:13,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-11 12:45:13,950 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-11 12:45:13,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:45:13,951 INFO L225 Difference]: With dead ends: 179 [2020-10-11 12:45:13,952 INFO L226 Difference]: Without dead ends: 177 [2020-10-11 12:45:13,952 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 [2020-10-11 12:45:13,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2020-10-11 12:45:13,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 135. [2020-10-11 12:45:13,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2020-10-11 12:45:13,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 339 transitions. [2020-10-11 12:45:13,955 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 339 transitions. Word has length 13 [2020-10-11 12:45:13,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:45:13,955 INFO L481 AbstractCegarLoop]: Abstraction has 135 states and 339 transitions. [2020-10-11 12:45:13,955 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-11 12:45:13,955 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 339 transitions. [2020-10-11 12:45:13,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-11 12:45:13,955 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:45:13,956 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:45:14,164 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,74 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:45:14,165 INFO L429 AbstractCegarLoop]: === Iteration 82 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:45:14,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:45:14,165 INFO L82 PathProgramCache]: Analyzing trace with hash -1501704308, now seen corresponding path program 56 times [2020-10-11 12:45:14,165 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:45:14,166 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585669911] [2020-10-11 12:45:14,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:45:14,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:45:14,250 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:45:14,251 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585669911] [2020-10-11 12:45:14,251 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1407151815] [2020-10-11 12:45:14,251 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 [2020-10-11 12:45:14,286 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-11 12:45:14,287 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:45:14,287 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-11 12:45:14,288 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:45:14,400 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:45:14,401 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:45:14,401 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-11 12:45:14,401 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363254558] [2020-10-11 12:45:14,401 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-11 12:45:14,401 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:45:14,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-11 12:45:14,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2020-10-11 12:45:14,402 INFO L87 Difference]: Start difference. First operand 135 states and 339 transitions. Second operand 15 states. [2020-10-11 12:45:14,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:45:14,555 INFO L93 Difference]: Finished difference Result 176 states and 421 transitions. [2020-10-11 12:45:14,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-11 12:45:14,556 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-11 12:45:14,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:45:14,557 INFO L225 Difference]: With dead ends: 176 [2020-10-11 12:45:14,557 INFO L226 Difference]: Without dead ends: 174 [2020-10-11 12:45:14,558 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 [2020-10-11 12:45:14,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2020-10-11 12:45:14,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 139. [2020-10-11 12:45:14,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2020-10-11 12:45:14,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 350 transitions. [2020-10-11 12:45:14,560 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 350 transitions. Word has length 13 [2020-10-11 12:45:14,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:45:14,561 INFO L481 AbstractCegarLoop]: Abstraction has 139 states and 350 transitions. [2020-10-11 12:45:14,561 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-11 12:45:14,561 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 350 transitions. [2020-10-11 12:45:14,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-11 12:45:14,561 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:45:14,561 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:45:14,762 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81,75 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:45:14,762 INFO L429 AbstractCegarLoop]: === Iteration 83 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:45:14,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:45:14,763 INFO L82 PathProgramCache]: Analyzing trace with hash -1501703347, now seen corresponding path program 57 times [2020-10-11 12:45:14,763 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:45:14,763 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689567403] [2020-10-11 12:45:14,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:45:14,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:45:14,849 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:45:14,850 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689567403] [2020-10-11 12:45:14,850 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1592235592] [2020-10-11 12:45:14,850 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 [2020-10-11 12:45:14,892 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-11 12:45:14,892 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:45:14,893 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-11 12:45:14,893 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:45:15,014 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:45:15,014 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:45:15,015 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-11 12:45:15,015 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286379008] [2020-10-11 12:45:15,015 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-11 12:45:15,015 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:45:15,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-11 12:45:15,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2020-10-11 12:45:15,016 INFO L87 Difference]: Start difference. First operand 139 states and 350 transitions. Second operand 15 states. [2020-10-11 12:45:15,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:45:15,234 INFO L93 Difference]: Finished difference Result 185 states and 439 transitions. [2020-10-11 12:45:15,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-11 12:45:15,235 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-11 12:45:15,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:45:15,237 INFO L225 Difference]: With dead ends: 185 [2020-10-11 12:45:15,237 INFO L226 Difference]: Without dead ends: 183 [2020-10-11 12:45:15,237 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 [2020-10-11 12:45:15,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2020-10-11 12:45:15,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 140. [2020-10-11 12:45:15,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-10-11 12:45:15,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 352 transitions. [2020-10-11 12:45:15,239 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 352 transitions. Word has length 13 [2020-10-11 12:45:15,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:45:15,240 INFO L481 AbstractCegarLoop]: Abstraction has 140 states and 352 transitions. [2020-10-11 12:45:15,240 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-11 12:45:15,240 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 352 transitions. [2020-10-11 12:45:15,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-11 12:45:15,240 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:45:15,240 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:45:15,441 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82,76 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:45:15,441 INFO L429 AbstractCegarLoop]: === Iteration 84 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:45:15,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:45:15,442 INFO L82 PathProgramCache]: Analyzing trace with hash -1501674517, now seen corresponding path program 58 times [2020-10-11 12:45:15,442 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:45:15,442 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736361547] [2020-10-11 12:45:15,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:45:15,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:45:15,529 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:45:15,530 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736361547] [2020-10-11 12:45:15,530 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [61328145] [2020-10-11 12:45:15,530 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 [2020-10-11 12:45:15,581 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-11 12:45:15,581 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:45:15,582 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-11 12:45:15,583 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:45:15,682 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:45:15,683 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:45:15,683 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-11 12:45:15,683 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351764513] [2020-10-11 12:45:15,683 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-11 12:45:15,683 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:45:15,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-11 12:45:15,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2020-10-11 12:45:15,684 INFO L87 Difference]: Start difference. First operand 140 states and 352 transitions. Second operand 15 states. [2020-10-11 12:45:15,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:45:15,891 INFO L93 Difference]: Finished difference Result 185 states and 439 transitions. [2020-10-11 12:45:15,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-11 12:45:15,892 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-11 12:45:15,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:45:15,893 INFO L225 Difference]: With dead ends: 185 [2020-10-11 12:45:15,893 INFO L226 Difference]: Without dead ends: 183 [2020-10-11 12:45:15,893 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=142, Invalid=278, Unknown=0, NotChecked=0, Total=420 [2020-10-11 12:45:15,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2020-10-11 12:45:15,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 138. [2020-10-11 12:45:15,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-10-11 12:45:15,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 345 transitions. [2020-10-11 12:45:15,897 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 345 transitions. Word has length 13 [2020-10-11 12:45:15,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:45:15,897 INFO L481 AbstractCegarLoop]: Abstraction has 138 states and 345 transitions. [2020-10-11 12:45:15,898 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-11 12:45:15,898 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 345 transitions. [2020-10-11 12:45:15,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-11 12:45:15,898 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:45:15,898 INFO L421 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:45:16,099 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83,77 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:45:16,099 INFO L429 AbstractCegarLoop]: === Iteration 85 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:45:16,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:45:16,100 INFO L82 PathProgramCache]: Analyzing trace with hash 1043911547, now seen corresponding path program 59 times [2020-10-11 12:45:16,100 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:45:16,100 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413389442] [2020-10-11 12:45:16,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:45:16,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:45:16,264 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:45:16,264 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413389442] [2020-10-11 12:45:16,265 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [339803262] [2020-10-11 12:45:16,265 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 [2020-10-11 12:45:16,321 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-11 12:45:16,321 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:45:16,322 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-11 12:45:16,323 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:45:16,475 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:45:16,476 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:45:16,476 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-11 12:45:16,476 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393328842] [2020-10-11 12:45:16,477 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-11 12:45:16,477 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:45:16,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-11 12:45:16,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2020-10-11 12:45:16,478 INFO L87 Difference]: Start difference. First operand 138 states and 345 transitions. Second operand 15 states. [2020-10-11 12:45:16,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:45:16,560 INFO L93 Difference]: Finished difference Result 182 states and 432 transitions. [2020-10-11 12:45:16,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-11 12:45:16,560 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-11 12:45:16,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:45:16,561 INFO L225 Difference]: With dead ends: 182 [2020-10-11 12:45:16,561 INFO L226 Difference]: Without dead ends: 180 [2020-10-11 12:45:16,562 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=167, Unknown=0, NotChecked=0, Total=240 [2020-10-11 12:45:16,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2020-10-11 12:45:16,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 144. [2020-10-11 12:45:16,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-10-11 12:45:16,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 363 transitions. [2020-10-11 12:45:16,565 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 363 transitions. Word has length 13 [2020-10-11 12:45:16,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:45:16,565 INFO L481 AbstractCegarLoop]: Abstraction has 144 states and 363 transitions. [2020-10-11 12:45:16,565 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-11 12:45:16,565 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 363 transitions. [2020-10-11 12:45:16,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-11 12:45:16,566 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:45:16,566 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:45:16,774 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 78 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable84 [2020-10-11 12:45:16,774 INFO L429 AbstractCegarLoop]: === Iteration 86 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:45:16,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:45:16,775 INFO L82 PathProgramCache]: Analyzing trace with hash 1043912508, now seen corresponding path program 60 times [2020-10-11 12:45:16,775 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:45:16,776 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695277313] [2020-10-11 12:45:16,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:45:16,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:45:16,920 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:45:16,920 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695277313] [2020-10-11 12:45:16,920 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [355076899] [2020-10-11 12:45:16,921 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 [2020-10-11 12:45:16,978 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-10-11 12:45:16,978 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:45:16,979 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-11 12:45:16,980 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:45:17,127 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:45:17,128 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:45:17,128 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-11 12:45:17,128 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31660355] [2020-10-11 12:45:17,128 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-11 12:45:17,129 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:45:17,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-11 12:45:17,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2020-10-11 12:45:17,129 INFO L87 Difference]: Start difference. First operand 144 states and 363 transitions. Second operand 15 states. [2020-10-11 12:45:17,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:45:17,293 INFO L93 Difference]: Finished difference Result 185 states and 437 transitions. [2020-10-11 12:45:17,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-11 12:45:17,293 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-11 12:45:17,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:45:17,295 INFO L225 Difference]: With dead ends: 185 [2020-10-11 12:45:17,295 INFO L226 Difference]: Without dead ends: 183 [2020-10-11 12:45:17,295 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 [2020-10-11 12:45:17,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2020-10-11 12:45:17,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 142. [2020-10-11 12:45:17,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-10-11 12:45:17,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 357 transitions. [2020-10-11 12:45:17,299 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 357 transitions. Word has length 13 [2020-10-11 12:45:17,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:45:17,299 INFO L481 AbstractCegarLoop]: Abstraction has 142 states and 357 transitions. [2020-10-11 12:45:17,299 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-11 12:45:17,299 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 357 transitions. [2020-10-11 12:45:17,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-11 12:45:17,300 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:45:17,300 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:45:17,508 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85,79 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:45:17,509 INFO L429 AbstractCegarLoop]: === Iteration 87 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:45:17,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:45:17,509 INFO L82 PathProgramCache]: Analyzing trace with hash 1043941338, now seen corresponding path program 61 times [2020-10-11 12:45:17,509 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:45:17,510 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291437916] [2020-10-11 12:45:17,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:45:17,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:45:17,591 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:45:17,591 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291437916] [2020-10-11 12:45:17,591 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1212929326] [2020-10-11 12:45:17,592 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 [2020-10-11 12:45:17,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:45:17,627 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-11 12:45:17,628 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:45:18,085 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:45:18,086 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:45:18,086 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-11 12:45:18,086 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588439170] [2020-10-11 12:45:18,086 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-11 12:45:18,086 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:45:18,086 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-11 12:45:18,086 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2020-10-11 12:45:18,087 INFO L87 Difference]: Start difference. First operand 142 states and 357 transitions. Second operand 15 states. [2020-10-11 12:45:18,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:45:18,302 INFO L93 Difference]: Finished difference Result 191 states and 449 transitions. [2020-10-11 12:45:18,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-11 12:45:18,303 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-11 12:45:18,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:45:18,304 INFO L225 Difference]: With dead ends: 191 [2020-10-11 12:45:18,304 INFO L226 Difference]: Without dead ends: 189 [2020-10-11 12:45:18,305 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=138, Invalid=282, Unknown=0, NotChecked=0, Total=420 [2020-10-11 12:45:18,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2020-10-11 12:45:18,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 140. [2020-10-11 12:45:18,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-10-11 12:45:18,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 351 transitions. [2020-10-11 12:45:18,307 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 351 transitions. Word has length 13 [2020-10-11 12:45:18,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:45:18,307 INFO L481 AbstractCegarLoop]: Abstraction has 140 states and 351 transitions. [2020-10-11 12:45:18,308 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-11 12:45:18,308 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 351 transitions. [2020-10-11 12:45:18,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-11 12:45:18,308 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:45:18,308 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:45:18,513 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86,80 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:45:18,514 INFO L429 AbstractCegarLoop]: === Iteration 88 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:45:18,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:45:18,514 INFO L82 PathProgramCache]: Analyzing trace with hash 1044835068, now seen corresponding path program 62 times [2020-10-11 12:45:18,515 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:45:18,515 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147326182] [2020-10-11 12:45:18,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:45:18,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:45:18,590 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:45:18,591 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147326182] [2020-10-11 12:45:18,591 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1066809844] [2020-10-11 12:45:18,591 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 [2020-10-11 12:45:18,649 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-11 12:45:18,650 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:45:18,651 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-11 12:45:18,652 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:45:18,785 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:45:18,786 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:45:18,786 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-11 12:45:18,786 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556598344] [2020-10-11 12:45:18,786 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-11 12:45:18,786 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:45:18,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-11 12:45:18,787 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2020-10-11 12:45:18,787 INFO L87 Difference]: Start difference. First operand 140 states and 351 transitions. Second operand 15 states. [2020-10-11 12:45:19,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:45:19,012 INFO L93 Difference]: Finished difference Result 187 states and 441 transitions. [2020-10-11 12:45:19,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-11 12:45:19,017 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-11 12:45:19,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:45:19,018 INFO L225 Difference]: With dead ends: 187 [2020-10-11 12:45:19,019 INFO L226 Difference]: Without dead ends: 185 [2020-10-11 12:45:19,019 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 [2020-10-11 12:45:19,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2020-10-11 12:45:19,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 142. [2020-10-11 12:45:19,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-10-11 12:45:19,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 357 transitions. [2020-10-11 12:45:19,022 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 357 transitions. Word has length 13 [2020-10-11 12:45:19,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:45:19,022 INFO L481 AbstractCegarLoop]: Abstraction has 142 states and 357 transitions. [2020-10-11 12:45:19,022 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-11 12:45:19,023 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 357 transitions. [2020-10-11 12:45:19,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-11 12:45:19,023 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:45:19,023 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:45:19,231 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 81 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable87 [2020-10-11 12:45:19,232 INFO L429 AbstractCegarLoop]: === Iteration 89 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:45:19,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:45:19,232 INFO L82 PathProgramCache]: Analyzing trace with hash 1044836029, now seen corresponding path program 63 times [2020-10-11 12:45:19,233 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:45:19,233 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030743754] [2020-10-11 12:45:19,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:45:19,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:45:19,307 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:45:19,308 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030743754] [2020-10-11 12:45:19,308 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [397341219] [2020-10-11 12:45:19,308 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 [2020-10-11 12:45:19,347 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-11 12:45:19,347 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:45:19,347 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-11 12:45:19,348 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:45:19,456 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:45:19,457 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:45:19,457 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-11 12:45:19,457 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239107400] [2020-10-11 12:45:19,457 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-11 12:45:19,458 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:45:19,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-11 12:45:19,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2020-10-11 12:45:19,458 INFO L87 Difference]: Start difference. First operand 142 states and 357 transitions. Second operand 15 states. [2020-10-11 12:45:19,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:45:19,699 INFO L93 Difference]: Finished difference Result 198 states and 463 transitions. [2020-10-11 12:45:19,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-11 12:45:19,699 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-11 12:45:19,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:45:19,701 INFO L225 Difference]: With dead ends: 198 [2020-10-11 12:45:19,701 INFO L226 Difference]: Without dead ends: 196 [2020-10-11 12:45:19,701 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=161, Invalid=345, Unknown=0, NotChecked=0, Total=506 [2020-10-11 12:45:19,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2020-10-11 12:45:19,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 142. [2020-10-11 12:45:19,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-10-11 12:45:19,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 356 transitions. [2020-10-11 12:45:19,705 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 356 transitions. Word has length 13 [2020-10-11 12:45:19,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:45:19,705 INFO L481 AbstractCegarLoop]: Abstraction has 142 states and 356 transitions. [2020-10-11 12:45:19,705 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-11 12:45:19,706 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 356 transitions. [2020-10-11 12:45:19,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-11 12:45:19,706 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:45:19,706 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:45:19,908 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88,82 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:45:19,908 INFO L429 AbstractCegarLoop]: === Iteration 90 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:45:19,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:45:19,909 INFO L82 PathProgramCache]: Analyzing trace with hash 1044864859, now seen corresponding path program 64 times [2020-10-11 12:45:19,909 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:45:19,909 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097323745] [2020-10-11 12:45:19,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:45:19,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:45:19,987 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:45:19,988 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097323745] [2020-10-11 12:45:19,988 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [379514644] [2020-10-11 12:45:19,988 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 [2020-10-11 12:45:20,024 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-11 12:45:20,024 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:45:20,025 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-11 12:45:20,026 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:45:20,146 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:45:20,146 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:45:20,146 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-11 12:45:20,147 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361925159] [2020-10-11 12:45:20,147 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-11 12:45:20,147 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:45:20,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-11 12:45:20,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2020-10-11 12:45:20,148 INFO L87 Difference]: Start difference. First operand 142 states and 356 transitions. Second operand 15 states. [2020-10-11 12:45:20,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:45:20,399 INFO L93 Difference]: Finished difference Result 189 states and 446 transitions. [2020-10-11 12:45:20,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-11 12:45:20,399 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-11 12:45:20,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:45:20,401 INFO L225 Difference]: With dead ends: 189 [2020-10-11 12:45:20,401 INFO L226 Difference]: Without dead ends: 187 [2020-10-11 12:45:20,401 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 [2020-10-11 12:45:20,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2020-10-11 12:45:20,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 139. [2020-10-11 12:45:20,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2020-10-11 12:45:20,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 347 transitions. [2020-10-11 12:45:20,404 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 347 transitions. Word has length 13 [2020-10-11 12:45:20,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:45:20,405 INFO L481 AbstractCegarLoop]: Abstraction has 139 states and 347 transitions. [2020-10-11 12:45:20,405 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-11 12:45:20,405 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 347 transitions. [2020-10-11 12:45:20,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-11 12:45:20,405 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:45:20,405 INFO L421 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:45:20,606 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 83 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable89 [2020-10-11 12:45:20,606 INFO L429 AbstractCegarLoop]: === Iteration 91 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:45:20,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:45:20,607 INFO L82 PathProgramCache]: Analyzing trace with hash 1681141037, now seen corresponding path program 65 times [2020-10-11 12:45:20,607 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:45:20,607 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438893112] [2020-10-11 12:45:20,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:45:20,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:45:20,706 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:45:20,706 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438893112] [2020-10-11 12:45:20,707 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [185813026] [2020-10-11 12:45:20,707 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 [2020-10-11 12:45:20,746 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-11 12:45:20,747 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:45:20,748 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-11 12:45:20,748 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:45:20,860 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:45:20,861 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:45:20,861 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-11 12:45:20,861 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795013830] [2020-10-11 12:45:20,861 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-11 12:45:20,861 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:45:20,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-11 12:45:20,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2020-10-11 12:45:20,863 INFO L87 Difference]: Start difference. First operand 139 states and 347 transitions. Second operand 15 states. [2020-10-11 12:45:20,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:45:20,961 INFO L93 Difference]: Finished difference Result 178 states and 423 transitions. [2020-10-11 12:45:20,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-11 12:45:20,962 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-11 12:45:20,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:45:20,964 INFO L225 Difference]: With dead ends: 178 [2020-10-11 12:45:20,964 INFO L226 Difference]: Without dead ends: 176 [2020-10-11 12:45:20,964 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 [2020-10-11 12:45:20,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2020-10-11 12:45:20,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 143. [2020-10-11 12:45:20,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-10-11 12:45:20,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 359 transitions. [2020-10-11 12:45:20,968 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 359 transitions. Word has length 13 [2020-10-11 12:45:20,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:45:20,969 INFO L481 AbstractCegarLoop]: Abstraction has 143 states and 359 transitions. [2020-10-11 12:45:20,969 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-11 12:45:20,969 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 359 transitions. [2020-10-11 12:45:20,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-11 12:45:20,969 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:45:20,970 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:45:21,180 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90,84 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:45:21,180 INFO L429 AbstractCegarLoop]: === Iteration 92 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:45:21,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:45:21,181 INFO L82 PathProgramCache]: Analyzing trace with hash 1681141998, now seen corresponding path program 66 times [2020-10-11 12:45:21,181 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:45:21,181 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032280245] [2020-10-11 12:45:21,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:45:21,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:45:21,268 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:45:21,269 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032280245] [2020-10-11 12:45:21,269 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1352369598] [2020-10-11 12:45:21,269 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 [2020-10-11 12:45:21,306 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-10-11 12:45:21,307 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:45:21,307 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-11 12:45:21,308 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:45:21,432 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:45:21,432 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:45:21,432 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-11 12:45:21,433 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956342765] [2020-10-11 12:45:21,433 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-11 12:45:21,433 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:45:21,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-11 12:45:21,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2020-10-11 12:45:21,433 INFO L87 Difference]: Start difference. First operand 143 states and 359 transitions. Second operand 15 states. [2020-10-11 12:45:21,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:45:21,628 INFO L93 Difference]: Finished difference Result 193 states and 452 transitions. [2020-10-11 12:45:21,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-11 12:45:21,629 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-11 12:45:21,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:45:21,630 INFO L225 Difference]: With dead ends: 193 [2020-10-11 12:45:21,630 INFO L226 Difference]: Without dead ends: 191 [2020-10-11 12:45:21,631 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 [2020-10-11 12:45:21,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2020-10-11 12:45:21,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 141. [2020-10-11 12:45:21,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-10-11 12:45:21,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 353 transitions. [2020-10-11 12:45:21,634 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 353 transitions. Word has length 13 [2020-10-11 12:45:21,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:45:21,634 INFO L481 AbstractCegarLoop]: Abstraction has 141 states and 353 transitions. [2020-10-11 12:45:21,634 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-11 12:45:21,634 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 353 transitions. [2020-10-11 12:45:21,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-11 12:45:21,635 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:45:21,635 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:45:21,836 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 85 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable91 [2020-10-11 12:45:21,837 INFO L429 AbstractCegarLoop]: === Iteration 93 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:45:21,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:45:21,837 INFO L82 PathProgramCache]: Analyzing trace with hash 1681170828, now seen corresponding path program 67 times [2020-10-11 12:45:21,837 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:45:21,838 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186605300] [2020-10-11 12:45:21,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:45:21,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:45:21,916 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:45:21,917 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186605300] [2020-10-11 12:45:21,917 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [716259651] [2020-10-11 12:45:21,917 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 [2020-10-11 12:45:21,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:45:21,955 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-11 12:45:21,955 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:45:22,630 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:45:22,630 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:45:22,631 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-11 12:45:22,631 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955810517] [2020-10-11 12:45:22,631 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-11 12:45:22,631 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:45:22,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-11 12:45:22,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2020-10-11 12:45:22,632 INFO L87 Difference]: Start difference. First operand 141 states and 353 transitions. Second operand 15 states. [2020-10-11 12:45:22,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:45:22,880 INFO L93 Difference]: Finished difference Result 195 states and 456 transitions. [2020-10-11 12:45:22,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-11 12:45:22,881 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-11 12:45:22,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:45:22,882 INFO L225 Difference]: With dead ends: 195 [2020-10-11 12:45:22,883 INFO L226 Difference]: Without dead ends: 193 [2020-10-11 12:45:22,883 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=146, Invalid=316, Unknown=0, NotChecked=0, Total=462 [2020-10-11 12:45:22,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2020-10-11 12:45:22,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 140. [2020-10-11 12:45:22,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-10-11 12:45:22,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 349 transitions. [2020-10-11 12:45:22,885 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 349 transitions. Word has length 13 [2020-10-11 12:45:22,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:45:22,885 INFO L481 AbstractCegarLoop]: Abstraction has 140 states and 349 transitions. [2020-10-11 12:45:22,886 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-11 12:45:22,886 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 349 transitions. [2020-10-11 12:45:22,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-11 12:45:22,886 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:45:22,886 INFO L421 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:45:23,086 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92,86 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:45:23,087 INFO L429 AbstractCegarLoop]: === Iteration 94 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:45:23,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:45:23,087 INFO L82 PathProgramCache]: Analyzing trace with hash 1701696827, now seen corresponding path program 68 times [2020-10-11 12:45:23,088 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:45:23,088 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718699394] [2020-10-11 12:45:23,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:45:23,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:45:23,176 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:45:23,177 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718699394] [2020-10-11 12:45:23,177 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [798150535] [2020-10-11 12:45:23,177 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 [2020-10-11 12:45:23,223 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-11 12:45:23,223 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:45:23,224 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-11 12:45:23,225 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:45:23,347 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:45:23,348 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:45:23,348 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-11 12:45:23,348 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489820620] [2020-10-11 12:45:23,348 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-11 12:45:23,348 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:45:23,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-11 12:45:23,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2020-10-11 12:45:23,349 INFO L87 Difference]: Start difference. First operand 140 states and 349 transitions. Second operand 15 states. [2020-10-11 12:45:23,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:45:23,462 INFO L93 Difference]: Finished difference Result 174 states and 414 transitions. [2020-10-11 12:45:23,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-11 12:45:23,462 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-11 12:45:23,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:45:23,464 INFO L225 Difference]: With dead ends: 174 [2020-10-11 12:45:23,464 INFO L226 Difference]: Without dead ends: 172 [2020-10-11 12:45:23,464 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 [2020-10-11 12:45:23,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2020-10-11 12:45:23,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 142. [2020-10-11 12:45:23,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-10-11 12:45:23,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 355 transitions. [2020-10-11 12:45:23,467 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 355 transitions. Word has length 13 [2020-10-11 12:45:23,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:45:23,467 INFO L481 AbstractCegarLoop]: Abstraction has 142 states and 355 transitions. [2020-10-11 12:45:23,467 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-11 12:45:23,467 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 355 transitions. [2020-10-11 12:45:23,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-11 12:45:23,468 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:45:23,468 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:45:23,668 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 87 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable93 [2020-10-11 12:45:23,669 INFO L429 AbstractCegarLoop]: === Iteration 95 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:45:23,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:45:23,669 INFO L82 PathProgramCache]: Analyzing trace with hash 1701697788, now seen corresponding path program 69 times [2020-10-11 12:45:23,670 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:45:23,670 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400607088] [2020-10-11 12:45:23,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:45:23,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:45:23,761 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:45:23,762 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400607088] [2020-10-11 12:45:23,762 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [269450536] [2020-10-11 12:45:23,762 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 [2020-10-11 12:45:23,800 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-11 12:45:23,800 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:45:23,801 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-11 12:45:23,801 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:45:23,911 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:45:23,912 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:45:23,912 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-11 12:45:23,912 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450841453] [2020-10-11 12:45:23,912 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-11 12:45:23,913 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:45:23,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-11 12:45:23,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2020-10-11 12:45:23,913 INFO L87 Difference]: Start difference. First operand 142 states and 355 transitions. Second operand 15 states. [2020-10-11 12:45:24,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:45:24,136 INFO L93 Difference]: Finished difference Result 189 states and 443 transitions. [2020-10-11 12:45:24,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-11 12:45:24,136 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-11 12:45:24,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:45:24,138 INFO L225 Difference]: With dead ends: 189 [2020-10-11 12:45:24,138 INFO L226 Difference]: Without dead ends: 187 [2020-10-11 12:45:24,138 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 [2020-10-11 12:45:24,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2020-10-11 12:45:24,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 141. [2020-10-11 12:45:24,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-10-11 12:45:24,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 351 transitions. [2020-10-11 12:45:24,142 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 351 transitions. Word has length 13 [2020-10-11 12:45:24,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:45:24,142 INFO L481 AbstractCegarLoop]: Abstraction has 141 states and 351 transitions. [2020-10-11 12:45:24,142 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-11 12:45:24,142 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 351 transitions. [2020-10-11 12:45:24,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-11 12:45:24,143 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:45:24,143 INFO L421 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:45:24,348 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94,88 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:45:24,349 INFO L429 AbstractCegarLoop]: === Iteration 96 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:45:24,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:45:24,349 INFO L82 PathProgramCache]: Analyzing trace with hash 1702359917, now seen corresponding path program 70 times [2020-10-11 12:45:24,349 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:45:24,350 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594608316] [2020-10-11 12:45:24,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:45:24,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:45:24,420 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:45:24,421 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594608316] [2020-10-11 12:45:24,421 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1186546765] [2020-10-11 12:45:24,421 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 [2020-10-11 12:45:24,459 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-11 12:45:24,459 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:45:24,460 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-11 12:45:24,461 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:45:24,577 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:45:24,578 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:45:24,578 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-11 12:45:24,578 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052605691] [2020-10-11 12:45:24,579 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-11 12:45:24,579 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:45:24,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-11 12:45:24,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2020-10-11 12:45:24,579 INFO L87 Difference]: Start difference. First operand 141 states and 351 transitions. Second operand 15 states. [2020-10-11 12:45:24,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:45:24,714 INFO L93 Difference]: Finished difference Result 175 states and 413 transitions. [2020-10-11 12:45:24,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-11 12:45:24,714 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-11 12:45:24,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:45:24,716 INFO L225 Difference]: With dead ends: 175 [2020-10-11 12:45:24,716 INFO L226 Difference]: Without dead ends: 173 [2020-10-11 12:45:24,716 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 [2020-10-11 12:45:24,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2020-10-11 12:45:24,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 145. [2020-10-11 12:45:24,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2020-10-11 12:45:24,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 357 transitions. [2020-10-11 12:45:24,719 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 357 transitions. Word has length 13 [2020-10-11 12:45:24,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:45:24,720 INFO L481 AbstractCegarLoop]: Abstraction has 145 states and 357 transitions. [2020-10-11 12:45:24,720 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-11 12:45:24,720 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 357 transitions. [2020-10-11 12:45:24,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-11 12:45:24,720 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:45:24,720 INFO L421 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:45:24,921 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95,89 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:45:24,921 INFO L429 AbstractCegarLoop]: === Iteration 97 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:45:24,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:45:24,922 INFO L82 PathProgramCache]: Analyzing trace with hash 1702382237, now seen corresponding path program 71 times [2020-10-11 12:45:24,922 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:45:24,922 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657990475] [2020-10-11 12:45:24,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:45:24,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:45:24,994 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:45:24,995 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657990475] [2020-10-11 12:45:24,995 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1053890161] [2020-10-11 12:45:24,995 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 [2020-10-11 12:45:25,033 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-11 12:45:25,034 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:45:25,034 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-11 12:45:25,035 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:45:25,137 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-11 12:45:25,173 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:45:25,173 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:45:25,173 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-11 12:45:25,174 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290248369] [2020-10-11 12:45:25,174 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-11 12:45:25,174 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:45:25,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-11 12:45:25,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-10-11 12:45:25,174 INFO L87 Difference]: Start difference. First operand 145 states and 357 transitions. Second operand 15 states. [2020-10-11 12:45:25,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:45:25,508 INFO L93 Difference]: Finished difference Result 195 states and 464 transitions. [2020-10-11 12:45:25,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-11 12:45:25,508 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-11 12:45:25,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:45:25,510 INFO L225 Difference]: With dead ends: 195 [2020-10-11 12:45:25,510 INFO L226 Difference]: Without dead ends: 190 [2020-10-11 12:45:25,510 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 [2020-10-11 12:45:25,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2020-10-11 12:45:25,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 143. [2020-10-11 12:45:25,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-10-11 12:45:25,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 350 transitions. [2020-10-11 12:45:25,513 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 350 transitions. Word has length 13 [2020-10-11 12:45:25,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:45:25,513 INFO L481 AbstractCegarLoop]: Abstraction has 143 states and 350 transitions. [2020-10-11 12:45:25,513 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-11 12:45:25,513 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 350 transitions. [2020-10-11 12:45:25,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-11 12:45:25,514 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:45:25,514 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:45:25,714 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96,90 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:45:25,715 INFO L429 AbstractCegarLoop]: === Iteration 98 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:45:25,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:45:25,715 INFO L82 PathProgramCache]: Analyzing trace with hash 1702389708, now seen corresponding path program 72 times [2020-10-11 12:45:25,715 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:45:25,716 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420280228] [2020-10-11 12:45:25,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:45:25,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:45:25,789 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:45:25,790 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420280228] [2020-10-11 12:45:25,790 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [933246] [2020-10-11 12:45:25,790 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 [2020-10-11 12:45:25,828 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-10-11 12:45:25,828 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:45:25,829 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-11 12:45:25,829 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:45:25,962 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:45:25,962 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:45:25,962 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-11 12:45:25,963 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088882577] [2020-10-11 12:45:25,963 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-11 12:45:25,963 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:45:25,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-11 12:45:25,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2020-10-11 12:45:25,964 INFO L87 Difference]: Start difference. First operand 143 states and 350 transitions. Second operand 15 states. [2020-10-11 12:45:26,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:45:26,221 INFO L93 Difference]: Finished difference Result 187 states and 442 transitions. [2020-10-11 12:45:26,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-11 12:45:26,222 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-11 12:45:26,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:45:26,224 INFO L225 Difference]: With dead ends: 187 [2020-10-11 12:45:26,224 INFO L226 Difference]: Without dead ends: 185 [2020-10-11 12:45:26,224 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 [2020-10-11 12:45:26,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2020-10-11 12:45:26,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 145. [2020-10-11 12:45:26,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2020-10-11 12:45:26,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 357 transitions. [2020-10-11 12:45:26,227 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 357 transitions. Word has length 13 [2020-10-11 12:45:26,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:45:26,228 INFO L481 AbstractCegarLoop]: Abstraction has 145 states and 357 transitions. [2020-10-11 12:45:26,228 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-11 12:45:26,228 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 357 transitions. [2020-10-11 12:45:26,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-11 12:45:26,228 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:45:26,228 INFO L421 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:45:26,429 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97,91 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:45:26,429 INFO L429 AbstractCegarLoop]: === Iteration 99 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:45:26,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:45:26,430 INFO L82 PathProgramCache]: Analyzing trace with hash 1702411067, now seen corresponding path program 73 times [2020-10-11 12:45:26,430 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:45:26,430 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863454866] [2020-10-11 12:45:26,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:45:26,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:45:26,503 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:45:26,503 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863454866] [2020-10-11 12:45:26,504 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [662418258] [2020-10-11 12:45:26,504 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 [2020-10-11 12:45:26,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:45:26,541 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-11 12:45:26,541 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:45:26,654 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-11 12:45:26,681 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:45:26,682 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:45:26,682 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-11 12:45:26,682 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142901538] [2020-10-11 12:45:26,682 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-11 12:45:26,682 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:45:26,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-11 12:45:26,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2020-10-11 12:45:26,683 INFO L87 Difference]: Start difference. First operand 145 states and 357 transitions. Second operand 15 states. [2020-10-11 12:45:27,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:45:27,148 INFO L93 Difference]: Finished difference Result 212 states and 503 transitions. [2020-10-11 12:45:27,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-11 12:45:27,149 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-11 12:45:27,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:45:27,150 INFO L225 Difference]: With dead ends: 212 [2020-10-11 12:45:27,150 INFO L226 Difference]: Without dead ends: 207 [2020-10-11 12:45:27,150 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 [2020-10-11 12:45:27,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2020-10-11 12:45:27,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 145. [2020-10-11 12:45:27,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2020-10-11 12:45:27,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 357 transitions. [2020-10-11 12:45:27,153 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 357 transitions. Word has length 13 [2020-10-11 12:45:27,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:45:27,153 INFO L481 AbstractCegarLoop]: Abstraction has 145 states and 357 transitions. [2020-10-11 12:45:27,153 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-11 12:45:27,153 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 357 transitions. [2020-10-11 12:45:27,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-11 12:45:27,154 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:45:27,154 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:45:27,354 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 92 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable98 [2020-10-11 12:45:27,354 INFO L429 AbstractCegarLoop]: === Iteration 100 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:45:27,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:45:27,355 INFO L82 PathProgramCache]: Analyzing trace with hash 1702412028, now seen corresponding path program 74 times [2020-10-11 12:45:27,355 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:45:27,355 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68726409] [2020-10-11 12:45:27,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:45:27,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:45:27,428 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:45:27,428 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68726409] [2020-10-11 12:45:27,428 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1191351802] [2020-10-11 12:45:27,428 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 [2020-10-11 12:45:27,468 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-11 12:45:27,468 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:45:27,469 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-11 12:45:27,470 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:45:27,569 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-11 12:45:27,593 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:45:27,593 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:45:27,593 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-11 12:45:27,594 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643750942] [2020-10-11 12:45:27,594 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-11 12:45:27,594 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:45:27,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-11 12:45:27,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-10-11 12:45:27,594 INFO L87 Difference]: Start difference. First operand 145 states and 357 transitions. Second operand 15 states. [2020-10-11 12:45:27,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:45:27,920 INFO L93 Difference]: Finished difference Result 202 states and 480 transitions. [2020-10-11 12:45:27,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-11 12:45:27,920 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-11 12:45:27,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:45:27,921 INFO L225 Difference]: With dead ends: 202 [2020-10-11 12:45:27,922 INFO L226 Difference]: Without dead ends: 197 [2020-10-11 12:45:27,922 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 [2020-10-11 12:45:27,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2020-10-11 12:45:27,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 141. [2020-10-11 12:45:27,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-10-11 12:45:27,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 343 transitions. [2020-10-11 12:45:27,925 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 343 transitions. Word has length 13 [2020-10-11 12:45:27,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:45:27,926 INFO L481 AbstractCegarLoop]: Abstraction has 141 states and 343 transitions. [2020-10-11 12:45:27,926 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-11 12:45:27,926 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 343 transitions. [2020-10-11 12:45:27,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-11 12:45:27,926 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:45:27,926 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:45:28,127 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99,93 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:45:28,127 INFO L429 AbstractCegarLoop]: === Iteration 101 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:45:28,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:45:28,128 INFO L82 PathProgramCache]: Analyzing trace with hash 1702620348, now seen corresponding path program 75 times [2020-10-11 12:45:28,128 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:45:28,128 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451557050] [2020-10-11 12:45:28,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:45:28,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:45:28,196 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:45:28,197 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451557050] [2020-10-11 12:45:28,197 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [560765711] [2020-10-11 12:45:28,197 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 [2020-10-11 12:45:28,236 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-11 12:45:28,236 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:45:28,236 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-11 12:45:28,237 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:45:28,910 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:45:28,910 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:45:28,910 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-11 12:45:28,910 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748980573] [2020-10-11 12:45:28,910 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-11 12:45:28,910 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:45:28,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-11 12:45:28,911 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2020-10-11 12:45:28,911 INFO L87 Difference]: Start difference. First operand 141 states and 343 transitions. Second operand 15 states. [2020-10-11 12:45:29,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:45:29,203 INFO L93 Difference]: Finished difference Result 198 states and 460 transitions. [2020-10-11 12:45:29,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-11 12:45:29,204 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-11 12:45:29,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:45:29,205 INFO L225 Difference]: With dead ends: 198 [2020-10-11 12:45:29,206 INFO L226 Difference]: Without dead ends: 196 [2020-10-11 12:45:29,206 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=148, Invalid=358, Unknown=0, NotChecked=0, Total=506 [2020-10-11 12:45:29,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2020-10-11 12:45:29,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 143. [2020-10-11 12:45:29,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-10-11 12:45:29,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 350 transitions. [2020-10-11 12:45:29,210 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 350 transitions. Word has length 13 [2020-10-11 12:45:29,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:45:29,210 INFO L481 AbstractCegarLoop]: Abstraction has 143 states and 350 transitions. [2020-10-11 12:45:29,210 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-11 12:45:29,210 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 350 transitions. [2020-10-11 12:45:29,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-11 12:45:29,211 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:45:29,211 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:45:29,420 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 94 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable100 [2020-10-11 12:45:29,421 INFO L429 AbstractCegarLoop]: === Iteration 102 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:45:29,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:45:29,421 INFO L82 PathProgramCache]: Analyzing trace with hash 1703283438, now seen corresponding path program 76 times [2020-10-11 12:45:29,422 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:45:29,422 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166570205] [2020-10-11 12:45:29,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:45:29,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:45:29,494 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:45:29,494 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166570205] [2020-10-11 12:45:29,495 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1783376088] [2020-10-11 12:45:29,495 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 [2020-10-11 12:45:29,532 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-11 12:45:29,532 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:45:29,533 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-11 12:45:29,534 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:45:29,708 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:45:29,709 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:45:29,709 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-11 12:45:29,709 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993751861] [2020-10-11 12:45:29,709 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-11 12:45:29,709 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:45:29,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-11 12:45:29,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2020-10-11 12:45:29,710 INFO L87 Difference]: Start difference. First operand 143 states and 350 transitions. Second operand 15 states. [2020-10-11 12:45:30,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:45:30,110 INFO L93 Difference]: Finished difference Result 209 states and 491 transitions. [2020-10-11 12:45:30,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-11 12:45:30,111 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-11 12:45:30,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:45:30,112 INFO L225 Difference]: With dead ends: 209 [2020-10-11 12:45:30,112 INFO L226 Difference]: Without dead ends: 207 [2020-10-11 12:45:30,113 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=206, Invalid=444, Unknown=0, NotChecked=0, Total=650 [2020-10-11 12:45:30,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2020-10-11 12:45:30,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 145. [2020-10-11 12:45:30,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2020-10-11 12:45:30,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 357 transitions. [2020-10-11 12:45:30,117 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 357 transitions. Word has length 13 [2020-10-11 12:45:30,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:45:30,117 INFO L481 AbstractCegarLoop]: Abstraction has 145 states and 357 transitions. [2020-10-11 12:45:30,117 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-11 12:45:30,117 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 357 transitions. [2020-10-11 12:45:30,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-11 12:45:30,117 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:45:30,117 INFO L421 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:45:30,318 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 95 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable101 [2020-10-11 12:45:30,318 INFO L429 AbstractCegarLoop]: === Iteration 103 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:45:30,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:45:30,319 INFO L82 PathProgramCache]: Analyzing trace with hash 1703304797, now seen corresponding path program 77 times [2020-10-11 12:45:30,319 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:45:30,319 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535170900] [2020-10-11 12:45:30,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:45:30,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:45:30,389 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:45:30,389 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535170900] [2020-10-11 12:45:30,389 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2072931384] [2020-10-11 12:45:30,390 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 [2020-10-11 12:45:30,428 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-11 12:45:30,428 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:45:30,429 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-11 12:45:30,429 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:45:30,543 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-11 12:45:30,579 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:45:30,579 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:45:30,580 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-11 12:45:30,580 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420230080] [2020-10-11 12:45:30,580 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-11 12:45:30,580 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:45:30,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-11 12:45:30,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2020-10-11 12:45:30,581 INFO L87 Difference]: Start difference. First operand 145 states and 357 transitions. Second operand 15 states. [2020-10-11 12:45:31,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:45:31,126 INFO L93 Difference]: Finished difference Result 217 states and 518 transitions. [2020-10-11 12:45:31,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-11 12:45:31,126 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-11 12:45:31,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:45:31,128 INFO L225 Difference]: With dead ends: 217 [2020-10-11 12:45:31,128 INFO L226 Difference]: Without dead ends: 212 [2020-10-11 12:45:31,129 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 181 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=289, Invalid=581, Unknown=0, NotChecked=0, Total=870 [2020-10-11 12:45:31,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2020-10-11 12:45:31,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 146. [2020-10-11 12:45:31,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-10-11 12:45:31,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 362 transitions. [2020-10-11 12:45:31,133 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 362 transitions. Word has length 13 [2020-10-11 12:45:31,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:45:31,133 INFO L481 AbstractCegarLoop]: Abstraction has 146 states and 362 transitions. [2020-10-11 12:45:31,133 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-11 12:45:31,133 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 362 transitions. [2020-10-11 12:45:31,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-11 12:45:31,134 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:45:31,134 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:45:31,340 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 96 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable102 [2020-10-11 12:45:31,341 INFO L429 AbstractCegarLoop]: === Iteration 104 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:45:31,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:45:31,341 INFO L82 PathProgramCache]: Analyzing trace with hash 1703305758, now seen corresponding path program 78 times [2020-10-11 12:45:31,341 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:45:31,342 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369477088] [2020-10-11 12:45:31,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:45:31,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:45:31,418 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:45:31,418 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369477088] [2020-10-11 12:45:31,419 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [291424394] [2020-10-11 12:45:31,419 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 [2020-10-11 12:45:31,458 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-10-11 12:45:31,458 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:45:31,459 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-11 12:45:31,460 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:45:33,641 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-11 12:45:33,684 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:45:33,685 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:45:33,685 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-11 12:45:33,685 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837132517] [2020-10-11 12:45:33,685 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-11 12:45:33,685 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:45:33,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-11 12:45:33,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=142, Unknown=1, NotChecked=0, Total=210 [2020-10-11 12:45:33,686 INFO L87 Difference]: Start difference. First operand 146 states and 362 transitions. Second operand 15 states. [2020-10-11 12:45:37,998 WARN L193 SmtUtils]: Spent 4.11 s on a formula simplification. DAG size of input: 38 DAG size of output: 34 [2020-10-11 12:45:42,194 WARN L193 SmtUtils]: Spent 4.11 s on a formula simplification. DAG size of input: 43 DAG size of output: 37 [2020-10-11 12:45:42,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:45:42,668 INFO L93 Difference]: Finished difference Result 236 states and 562 transitions. [2020-10-11 12:45:42,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-11 12:45:42,669 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-11 12:45:42,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:45:42,670 INFO L225 Difference]: With dead ends: 236 [2020-10-11 12:45:42,670 INFO L226 Difference]: Without dead ends: 228 [2020-10-11 12:45:42,670 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 [2020-10-11 12:45:42,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2020-10-11 12:45:42,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 141. [2020-10-11 12:45:42,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-10-11 12:45:42,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 346 transitions. [2020-10-11 12:45:42,673 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 346 transitions. Word has length 13 [2020-10-11 12:45:42,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:45:42,674 INFO L481 AbstractCegarLoop]: Abstraction has 141 states and 346 transitions. [2020-10-11 12:45:42,674 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-11 12:45:42,674 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 346 transitions. [2020-10-11 12:45:42,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-11 12:45:42,674 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:45:42,674 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:45:42,875 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 97 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable103 [2020-10-11 12:45:42,875 INFO L429 AbstractCegarLoop]: === Iteration 105 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:45:42,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:45:42,876 INFO L82 PathProgramCache]: Analyzing trace with hash 1703334588, now seen corresponding path program 79 times [2020-10-11 12:45:42,876 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:45:42,876 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595875175] [2020-10-11 12:45:42,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:45:42,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:45:42,946 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:45:42,947 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595875175] [2020-10-11 12:45:42,947 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1096395400] [2020-10-11 12:45:42,947 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 [2020-10-11 12:45:42,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:45:42,983 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-11 12:45:42,983 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:45:43,113 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-11 12:45:43,114 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-11 12:45:44,237 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:45:44,237 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:45:44,237 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-11 12:45:44,238 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585366435] [2020-10-11 12:45:44,238 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-11 12:45:44,238 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:45:44,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-11 12:45:44,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=169, Unknown=1, NotChecked=0, Total=240 [2020-10-11 12:45:44,239 INFO L87 Difference]: Start difference. First operand 141 states and 346 transitions. Second operand 16 states. [2020-10-11 12:45:46,385 WARN L193 SmtUtils]: Spent 1.68 s on a formula simplification that was a NOOP. DAG size: 44 [2020-10-11 12:45:53,080 WARN L193 SmtUtils]: Spent 1.29 s on a formula simplification that was a NOOP. DAG size: 51 [2020-10-11 12:45:56,815 WARN L193 SmtUtils]: Spent 3.65 s on a formula simplification. DAG size of input: 60 DAG size of output: 58 [2020-10-11 12:46:11,932 WARN L193 SmtUtils]: Spent 2.07 s on a formula simplification. DAG size of input: 39 DAG size of output: 37 [2020-10-11 12:46:34,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:46:34,796 INFO L93 Difference]: Finished difference Result 236 states and 556 transitions. [2020-10-11 12:46:34,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-11 12:46:34,797 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 13 [2020-10-11 12:46:34,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:46:34,798 INFO L225 Difference]: With dead ends: 236 [2020-10-11 12:46:34,798 INFO L226 Difference]: Without dead ends: 231 [2020-10-11 12:46:34,799 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 26.9s TimeCoverageRelationStatistics Valid=311, Invalid=734, Unknown=11, NotChecked=0, Total=1056 [2020-10-11 12:46:34,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2020-10-11 12:46:34,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 140. [2020-10-11 12:46:34,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-10-11 12:46:34,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 341 transitions. [2020-10-11 12:46:34,803 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 341 transitions. Word has length 13 [2020-10-11 12:46:34,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:46:34,803 INFO L481 AbstractCegarLoop]: Abstraction has 140 states and 341 transitions. [2020-10-11 12:46:34,803 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-11 12:46:34,803 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 341 transitions. [2020-10-11 12:46:34,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-11 12:46:34,803 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:46:34,804 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:46:35,004 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104,98 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:46:35,004 INFO L429 AbstractCegarLoop]: === Iteration 106 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:46:35,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:46:35,005 INFO L82 PathProgramCache]: Analyzing trace with hash 1709770188, now seen corresponding path program 80 times [2020-10-11 12:46:35,005 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:46:35,005 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678507166] [2020-10-11 12:46:35,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:46:35,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:46:35,077 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:46:35,078 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678507166] [2020-10-11 12:46:35,078 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1398964168] [2020-10-11 12:46:35,078 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 [2020-10-11 12:46:35,117 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-11 12:46:35,118 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:46:35,118 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-11 12:46:35,119 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:46:35,254 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:46:35,254 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:46:35,255 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-11 12:46:35,255 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888897654] [2020-10-11 12:46:35,255 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-11 12:46:35,256 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:46:35,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-11 12:46:35,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2020-10-11 12:46:35,256 INFO L87 Difference]: Start difference. First operand 140 states and 341 transitions. Second operand 15 states. [2020-10-11 12:46:35,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:46:35,540 INFO L93 Difference]: Finished difference Result 197 states and 457 transitions. [2020-10-11 12:46:35,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-11 12:46:35,540 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-11 12:46:35,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:46:35,541 INFO L225 Difference]: With dead ends: 197 [2020-10-11 12:46:35,541 INFO L226 Difference]: Without dead ends: 195 [2020-10-11 12:46:35,542 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 [2020-10-11 12:46:35,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2020-10-11 12:46:35,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 143. [2020-10-11 12:46:35,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-10-11 12:46:35,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 352 transitions. [2020-10-11 12:46:35,544 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 352 transitions. Word has length 13 [2020-10-11 12:46:35,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:46:35,545 INFO L481 AbstractCegarLoop]: Abstraction has 143 states and 352 transitions. [2020-10-11 12:46:35,545 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-11 12:46:35,545 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 352 transitions. [2020-10-11 12:46:35,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-11 12:46:35,545 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:46:35,545 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:46:35,749 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105,99 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:46:35,750 INFO L429 AbstractCegarLoop]: === Iteration 107 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:46:35,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:46:35,750 INFO L82 PathProgramCache]: Analyzing trace with hash 1709771149, now seen corresponding path program 81 times [2020-10-11 12:46:35,750 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:46:35,751 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888155412] [2020-10-11 12:46:35,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:46:35,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:46:35,840 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:46:35,841 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888155412] [2020-10-11 12:46:35,841 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [752217148] [2020-10-11 12:46:35,841 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 [2020-10-11 12:46:35,880 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-11 12:46:35,881 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:46:35,881 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-11 12:46:35,882 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:46:36,013 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:46:36,013 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:46:36,013 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-11 12:46:36,013 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075351274] [2020-10-11 12:46:36,014 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-11 12:46:36,014 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:46:36,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-11 12:46:36,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2020-10-11 12:46:36,014 INFO L87 Difference]: Start difference. First operand 143 states and 352 transitions. Second operand 15 states. [2020-10-11 12:46:36,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:46:36,308 INFO L93 Difference]: Finished difference Result 202 states and 467 transitions. [2020-10-11 12:46:36,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-11 12:46:36,309 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-11 12:46:36,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:46:36,310 INFO L225 Difference]: With dead ends: 202 [2020-10-11 12:46:36,310 INFO L226 Difference]: Without dead ends: 200 [2020-10-11 12:46:36,311 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 [2020-10-11 12:46:36,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2020-10-11 12:46:36,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 143. [2020-10-11 12:46:36,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-10-11 12:46:36,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 351 transitions. [2020-10-11 12:46:36,313 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 351 transitions. Word has length 13 [2020-10-11 12:46:36,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:46:36,313 INFO L481 AbstractCegarLoop]: Abstraction has 143 states and 351 transitions. [2020-10-11 12:46:36,313 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-11 12:46:36,314 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 351 transitions. [2020-10-11 12:46:36,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-11 12:46:36,314 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:46:36,314 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:46:36,514 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 100 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable106 [2020-10-11 12:46:36,515 INFO L429 AbstractCegarLoop]: === Iteration 108 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:46:36,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:46:36,515 INFO L82 PathProgramCache]: Analyzing trace with hash 1709799979, now seen corresponding path program 82 times [2020-10-11 12:46:36,516 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:46:36,516 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758796970] [2020-10-11 12:46:36,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:46:36,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:46:36,592 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:46:36,592 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758796970] [2020-10-11 12:46:36,593 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [603796891] [2020-10-11 12:46:36,593 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 [2020-10-11 12:46:36,630 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-11 12:46:36,630 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:46:36,630 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-11 12:46:36,631 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:46:36,771 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:46:36,771 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:46:36,771 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-11 12:46:36,771 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869683402] [2020-10-11 12:46:36,772 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-11 12:46:36,772 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:46:36,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-11 12:46:36,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2020-10-11 12:46:36,772 INFO L87 Difference]: Start difference. First operand 143 states and 351 transitions. Second operand 15 states. [2020-10-11 12:46:37,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:46:37,072 INFO L93 Difference]: Finished difference Result 197 states and 458 transitions. [2020-10-11 12:46:37,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-11 12:46:37,072 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-11 12:46:37,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:46:37,073 INFO L225 Difference]: With dead ends: 197 [2020-10-11 12:46:37,073 INFO L226 Difference]: Without dead ends: 195 [2020-10-11 12:46:37,073 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 [2020-10-11 12:46:37,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2020-10-11 12:46:37,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 142. [2020-10-11 12:46:37,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-10-11 12:46:37,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 348 transitions. [2020-10-11 12:46:37,076 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 348 transitions. Word has length 13 [2020-10-11 12:46:37,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:46:37,076 INFO L481 AbstractCegarLoop]: Abstraction has 142 states and 348 transitions. [2020-10-11 12:46:37,076 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-11 12:46:37,076 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 348 transitions. [2020-10-11 12:46:37,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-11 12:46:37,076 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:46:37,077 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:46:37,277 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 101 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable107 [2020-10-11 12:46:37,277 INFO L429 AbstractCegarLoop]: === Iteration 109 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:46:37,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:46:37,278 INFO L82 PathProgramCache]: Analyzing trace with hash 1730325978, now seen corresponding path program 83 times [2020-10-11 12:46:37,278 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:46:37,279 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587379913] [2020-10-11 12:46:37,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:46:37,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:46:37,350 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:46:37,351 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587379913] [2020-10-11 12:46:37,351 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1796430242] [2020-10-11 12:46:37,351 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 [2020-10-11 12:46:37,396 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-11 12:46:37,397 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:46:37,397 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-11 12:46:37,398 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:46:37,602 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:46:37,602 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:46:37,602 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-11 12:46:37,603 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396128860] [2020-10-11 12:46:37,603 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-11 12:46:37,603 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:46:37,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-11 12:46:37,604 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2020-10-11 12:46:37,604 INFO L87 Difference]: Start difference. First operand 142 states and 348 transitions. Second operand 15 states. [2020-10-11 12:46:38,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:46:38,221 INFO L93 Difference]: Finished difference Result 214 states and 496 transitions. [2020-10-11 12:46:38,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-11 12:46:38,222 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-11 12:46:38,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:46:38,224 INFO L225 Difference]: With dead ends: 214 [2020-10-11 12:46:38,224 INFO L226 Difference]: Without dead ends: 212 [2020-10-11 12:46:38,224 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 [2020-10-11 12:46:38,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2020-10-11 12:46:38,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 144. [2020-10-11 12:46:38,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-10-11 12:46:38,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 356 transitions. [2020-10-11 12:46:38,230 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 356 transitions. Word has length 13 [2020-10-11 12:46:38,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:46:38,230 INFO L481 AbstractCegarLoop]: Abstraction has 144 states and 356 transitions. [2020-10-11 12:46:38,231 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-11 12:46:38,231 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 356 transitions. [2020-10-11 12:46:38,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-11 12:46:38,232 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:46:38,232 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:46:38,445 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 102 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable108 [2020-10-11 12:46:38,445 INFO L429 AbstractCegarLoop]: === Iteration 110 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:46:38,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:46:38,446 INFO L82 PathProgramCache]: Analyzing trace with hash 1730326939, now seen corresponding path program 84 times [2020-10-11 12:46:38,446 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:46:38,447 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195052441] [2020-10-11 12:46:38,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:46:38,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:46:38,561 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:46:38,561 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195052441] [2020-10-11 12:46:38,561 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1961602850] [2020-10-11 12:46:38,562 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 [2020-10-11 12:46:38,627 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-10-11 12:46:38,627 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:46:38,629 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-11 12:46:38,630 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:46:38,816 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:46:38,816 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:46:38,817 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-11 12:46:38,817 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539069946] [2020-10-11 12:46:38,817 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-11 12:46:38,818 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:46:38,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-11 12:46:38,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2020-10-11 12:46:38,818 INFO L87 Difference]: Start difference. First operand 144 states and 356 transitions. Second operand 15 states. [2020-10-11 12:46:39,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:46:39,382 INFO L93 Difference]: Finished difference Result 217 states and 502 transitions. [2020-10-11 12:46:39,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-11 12:46:39,383 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-11 12:46:39,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:46:39,384 INFO L225 Difference]: With dead ends: 217 [2020-10-11 12:46:39,384 INFO L226 Difference]: Without dead ends: 215 [2020-10-11 12:46:39,384 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=207, Invalid=495, Unknown=0, NotChecked=0, Total=702 [2020-10-11 12:46:39,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2020-10-11 12:46:39,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 145. [2020-10-11 12:46:39,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2020-10-11 12:46:39,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 360 transitions. [2020-10-11 12:46:39,388 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 360 transitions. Word has length 13 [2020-10-11 12:46:39,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:46:39,388 INFO L481 AbstractCegarLoop]: Abstraction has 145 states and 360 transitions. [2020-10-11 12:46:39,388 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-11 12:46:39,388 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 360 transitions. [2020-10-11 12:46:39,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-11 12:46:39,388 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:46:39,389 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:46:39,596 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109,103 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:46:39,596 INFO L429 AbstractCegarLoop]: === Iteration 111 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:46:39,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:46:39,597 INFO L82 PathProgramCache]: Analyzing trace with hash 1730989068, now seen corresponding path program 85 times [2020-10-11 12:46:39,597 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:46:39,597 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595090053] [2020-10-11 12:46:39,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:46:39,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:46:39,673 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:46:39,674 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595090053] [2020-10-11 12:46:39,674 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1951769149] [2020-10-11 12:46:39,674 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 [2020-10-11 12:46:39,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:46:39,712 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-11 12:46:39,712 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:46:39,858 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:46:39,858 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:46:39,858 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-11 12:46:39,858 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322109511] [2020-10-11 12:46:39,859 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-11 12:46:39,859 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:46:39,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-11 12:46:39,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2020-10-11 12:46:39,859 INFO L87 Difference]: Start difference. First operand 145 states and 360 transitions. Second operand 15 states. [2020-10-11 12:46:40,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:46:40,305 INFO L93 Difference]: Finished difference Result 211 states and 500 transitions. [2020-10-11 12:46:40,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-11 12:46:40,306 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-11 12:46:40,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:46:40,307 INFO L225 Difference]: With dead ends: 211 [2020-10-11 12:46:40,307 INFO L226 Difference]: Without dead ends: 209 [2020-10-11 12:46:40,308 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=238, Invalid=518, Unknown=0, NotChecked=0, Total=756 [2020-10-11 12:46:40,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2020-10-11 12:46:40,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 147. [2020-10-11 12:46:40,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2020-10-11 12:46:40,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 367 transitions. [2020-10-11 12:46:40,312 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 367 transitions. Word has length 13 [2020-10-11 12:46:40,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:46:40,312 INFO L481 AbstractCegarLoop]: Abstraction has 147 states and 367 transitions. [2020-10-11 12:46:40,312 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-11 12:46:40,312 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 367 transitions. [2020-10-11 12:46:40,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-11 12:46:40,312 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:46:40,313 INFO L421 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:46:40,515 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110,104 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:46:40,516 INFO L429 AbstractCegarLoop]: === Iteration 112 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:46:40,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:46:40,516 INFO L82 PathProgramCache]: Analyzing trace with hash 1731010427, now seen corresponding path program 86 times [2020-10-11 12:46:40,516 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:46:40,517 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232805437] [2020-10-11 12:46:40,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:46:40,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:46:40,593 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:46:40,593 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232805437] [2020-10-11 12:46:40,593 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1541298911] [2020-10-11 12:46:40,593 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 [2020-10-11 12:46:40,631 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-11 12:46:40,631 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:46:40,632 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-11 12:46:40,633 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:46:40,741 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-11 12:46:40,750 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:46:40,751 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:46:40,751 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-11 12:46:40,751 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403496610] [2020-10-11 12:46:40,751 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-11 12:46:40,752 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:46:40,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-11 12:46:40,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2020-10-11 12:46:40,752 INFO L87 Difference]: Start difference. First operand 147 states and 367 transitions. Second operand 15 states. [2020-10-11 12:46:41,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:46:41,261 INFO L93 Difference]: Finished difference Result 211 states and 507 transitions. [2020-10-11 12:46:41,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-11 12:46:41,262 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-11 12:46:41,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:46:41,263 INFO L225 Difference]: With dead ends: 211 [2020-10-11 12:46:41,263 INFO L226 Difference]: Without dead ends: 206 [2020-10-11 12:46:41,263 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 [2020-10-11 12:46:41,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2020-10-11 12:46:41,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 147. [2020-10-11 12:46:41,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2020-10-11 12:46:41,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 367 transitions. [2020-10-11 12:46:41,266 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 367 transitions. Word has length 13 [2020-10-11 12:46:41,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:46:41,267 INFO L481 AbstractCegarLoop]: Abstraction has 147 states and 367 transitions. [2020-10-11 12:46:41,267 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-11 12:46:41,267 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 367 transitions. [2020-10-11 12:46:41,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-11 12:46:41,267 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:46:41,267 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:46:41,467 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 105 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable111 [2020-10-11 12:46:41,468 INFO L429 AbstractCegarLoop]: === Iteration 113 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:46:41,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:46:41,468 INFO L82 PathProgramCache]: Analyzing trace with hash 1731011388, now seen corresponding path program 87 times [2020-10-11 12:46:41,469 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:46:41,469 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366370410] [2020-10-11 12:46:41,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:46:41,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:46:41,549 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:46:41,549 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366370410] [2020-10-11 12:46:41,550 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1144515100] [2020-10-11 12:46:41,550 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 [2020-10-11 12:46:41,586 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-11 12:46:41,586 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:46:41,587 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-11 12:46:41,587 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:46:41,697 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-11 12:46:41,740 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:46:41,740 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:46:41,741 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-11 12:46:41,741 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129332554] [2020-10-11 12:46:41,741 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-11 12:46:41,741 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:46:41,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-11 12:46:41,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2020-10-11 12:46:41,742 INFO L87 Difference]: Start difference. First operand 147 states and 367 transitions. Second operand 15 states. [2020-10-11 12:46:42,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:46:42,376 INFO L93 Difference]: Finished difference Result 227 states and 546 transitions. [2020-10-11 12:46:42,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-11 12:46:42,377 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-11 12:46:42,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:46:42,377 INFO L225 Difference]: With dead ends: 227 [2020-10-11 12:46:42,377 INFO L226 Difference]: Without dead ends: 222 [2020-10-11 12:46:42,378 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 [2020-10-11 12:46:42,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2020-10-11 12:46:42,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 145. [2020-10-11 12:46:42,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2020-10-11 12:46:42,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 360 transitions. [2020-10-11 12:46:42,381 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 360 transitions. Word has length 13 [2020-10-11 12:46:42,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:46:42,381 INFO L481 AbstractCegarLoop]: Abstraction has 145 states and 360 transitions. [2020-10-11 12:46:42,381 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-11 12:46:42,381 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 360 transitions. [2020-10-11 12:46:42,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-11 12:46:42,381 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:46:42,381 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:46:42,582 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 106 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable112 [2020-10-11 12:46:42,582 INFO L429 AbstractCegarLoop]: === Iteration 114 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:46:42,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:46:42,583 INFO L82 PathProgramCache]: Analyzing trace with hash 1731018859, now seen corresponding path program 88 times [2020-10-11 12:46:42,583 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:46:42,583 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066337163] [2020-10-11 12:46:42,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:46:42,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:46:42,661 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:46:42,661 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066337163] [2020-10-11 12:46:42,661 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1920991912] [2020-10-11 12:46:42,661 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 [2020-10-11 12:46:42,697 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-11 12:46:42,697 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:46:42,698 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-11 12:46:42,699 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:46:42,829 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:46:42,829 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:46:42,829 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-11 12:46:42,829 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970696988] [2020-10-11 12:46:42,830 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-11 12:46:42,830 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:46:42,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-11 12:46:42,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2020-10-11 12:46:42,831 INFO L87 Difference]: Start difference. First operand 145 states and 360 transitions. Second operand 15 states. [2020-10-11 12:46:43,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:46:43,338 INFO L93 Difference]: Finished difference Result 221 states and 523 transitions. [2020-10-11 12:46:43,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-11 12:46:43,339 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-11 12:46:43,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:46:43,340 INFO L225 Difference]: With dead ends: 221 [2020-10-11 12:46:43,340 INFO L226 Difference]: Without dead ends: 219 [2020-10-11 12:46:43,341 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 [2020-10-11 12:46:43,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2020-10-11 12:46:43,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 147. [2020-10-11 12:46:43,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2020-10-11 12:46:43,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 367 transitions. [2020-10-11 12:46:43,344 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 367 transitions. Word has length 13 [2020-10-11 12:46:43,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:46:43,344 INFO L481 AbstractCegarLoop]: Abstraction has 147 states and 367 transitions. [2020-10-11 12:46:43,344 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-11 12:46:43,344 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 367 transitions. [2020-10-11 12:46:43,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-11 12:46:43,344 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:46:43,344 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:46:43,545 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113,107 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:46:43,545 INFO L429 AbstractCegarLoop]: === Iteration 115 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:46:43,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:46:43,547 INFO L82 PathProgramCache]: Analyzing trace with hash 1731040218, now seen corresponding path program 89 times [2020-10-11 12:46:43,547 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:46:43,547 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328968755] [2020-10-11 12:46:43,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:46:43,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:46:43,623 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:46:43,623 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328968755] [2020-10-11 12:46:43,624 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1206134292] [2020-10-11 12:46:43,624 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 [2020-10-11 12:46:43,662 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-11 12:46:43,662 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:46:43,663 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-11 12:46:43,664 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:46:43,764 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-11 12:46:43,774 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:46:43,774 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:46:43,774 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-11 12:46:43,775 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913964834] [2020-10-11 12:46:43,775 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-11 12:46:43,775 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:46:43,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-11 12:46:43,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2020-10-11 12:46:43,776 INFO L87 Difference]: Start difference. First operand 147 states and 367 transitions. Second operand 15 states. [2020-10-11 12:46:44,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:46:44,401 INFO L93 Difference]: Finished difference Result 240 states and 577 transitions. [2020-10-11 12:46:44,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-11 12:46:44,401 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-11 12:46:44,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:46:44,402 INFO L225 Difference]: With dead ends: 240 [2020-10-11 12:46:44,402 INFO L226 Difference]: Without dead ends: 232 [2020-10-11 12:46:44,403 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 271 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=349, Invalid=773, Unknown=0, NotChecked=0, Total=1122 [2020-10-11 12:46:44,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2020-10-11 12:46:44,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 148. [2020-10-11 12:46:44,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2020-10-11 12:46:44,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 372 transitions. [2020-10-11 12:46:44,406 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 372 transitions. Word has length 13 [2020-10-11 12:46:44,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:46:44,406 INFO L481 AbstractCegarLoop]: Abstraction has 148 states and 372 transitions. [2020-10-11 12:46:44,406 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-11 12:46:44,406 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 372 transitions. [2020-10-11 12:46:44,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-11 12:46:44,407 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:46:44,407 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:46:44,607 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 108 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable114 [2020-10-11 12:46:44,608 INFO L429 AbstractCegarLoop]: === Iteration 116 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:46:44,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:46:44,608 INFO L82 PathProgramCache]: Analyzing trace with hash 1731041179, now seen corresponding path program 90 times [2020-10-11 12:46:44,608 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:46:44,609 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440829261] [2020-10-11 12:46:44,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:46:44,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:46:44,691 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:46:44,691 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440829261] [2020-10-11 12:46:44,691 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [452992284] [2020-10-11 12:46:44,692 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 [2020-10-11 12:46:44,732 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-10-11 12:46:44,732 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:46:44,733 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-11 12:46:44,734 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:46:44,878 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-11 12:46:44,899 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:46:44,899 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:46:44,899 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-11 12:46:44,900 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27959974] [2020-10-11 12:46:44,900 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-11 12:46:44,900 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:46:44,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-11 12:46:44,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-10-11 12:46:44,901 INFO L87 Difference]: Start difference. First operand 148 states and 372 transitions. Second operand 15 states. [2020-10-11 12:46:45,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:46:45,806 INFO L93 Difference]: Finished difference Result 238 states and 576 transitions. [2020-10-11 12:46:45,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-11 12:46:45,808 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-11 12:46:45,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:46:45,809 INFO L225 Difference]: With dead ends: 238 [2020-10-11 12:46:45,809 INFO L226 Difference]: Without dead ends: 230 [2020-10-11 12:46:45,810 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 279 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=343, Invalid=779, Unknown=0, NotChecked=0, Total=1122 [2020-10-11 12:46:45,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2020-10-11 12:46:45,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 142. [2020-10-11 12:46:45,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-10-11 12:46:45,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 354 transitions. [2020-10-11 12:46:45,815 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 354 transitions. Word has length 13 [2020-10-11 12:46:45,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:46:45,816 INFO L481 AbstractCegarLoop]: Abstraction has 142 states and 354 transitions. [2020-10-11 12:46:45,816 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-11 12:46:45,816 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 354 transitions. [2020-10-11 12:46:45,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-11 12:46:45,817 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:46:45,817 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:46:46,029 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115,109 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:46:46,029 INFO L429 AbstractCegarLoop]: === Iteration 117 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:46:46,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:46:46,031 INFO L82 PathProgramCache]: Analyzing trace with hash 1731249499, now seen corresponding path program 91 times [2020-10-11 12:46:46,031 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:46:46,032 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346793761] [2020-10-11 12:46:46,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:46:46,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:46:46,145 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:46:46,146 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346793761] [2020-10-11 12:46:46,146 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1305292890] [2020-10-11 12:46:46,146 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 [2020-10-11 12:46:46,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:46:46,213 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-11 12:46:46,214 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:46:46,423 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:46:46,423 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:46:46,423 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-11 12:46:46,424 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724619359] [2020-10-11 12:46:46,424 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-11 12:46:46,424 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:46:46,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-11 12:46:46,425 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2020-10-11 12:46:46,425 INFO L87 Difference]: Start difference. First operand 142 states and 354 transitions. Second operand 15 states. [2020-10-11 12:46:46,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:46:46,785 INFO L93 Difference]: Finished difference Result 195 states and 459 transitions. [2020-10-11 12:46:46,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-11 12:46:46,786 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-11 12:46:46,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:46:46,787 INFO L225 Difference]: With dead ends: 195 [2020-10-11 12:46:46,787 INFO L226 Difference]: Without dead ends: 193 [2020-10-11 12:46:46,787 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=149, Invalid=357, Unknown=0, NotChecked=0, Total=506 [2020-10-11 12:46:46,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2020-10-11 12:46:46,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 142. [2020-10-11 12:46:46,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-10-11 12:46:46,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 354 transitions. [2020-10-11 12:46:46,791 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 354 transitions. Word has length 13 [2020-10-11 12:46:46,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:46:46,791 INFO L481 AbstractCegarLoop]: Abstraction has 142 states and 354 transitions. [2020-10-11 12:46:46,791 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-11 12:46:46,791 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 354 transitions. [2020-10-11 12:46:46,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-11 12:46:46,792 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:46:46,792 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:46:47,000 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 110 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable116 [2020-10-11 12:46:47,000 INFO L429 AbstractCegarLoop]: === Iteration 118 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:46:47,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:46:47,001 INFO L82 PathProgramCache]: Analyzing trace with hash 1731912589, now seen corresponding path program 92 times [2020-10-11 12:46:47,001 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:46:47,001 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916464145] [2020-10-11 12:46:47,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:46:47,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:46:47,084 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:46:47,084 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916464145] [2020-10-11 12:46:47,084 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2043445871] [2020-10-11 12:46:47,084 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 [2020-10-11 12:46:47,126 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-11 12:46:47,126 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:46:47,126 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-11 12:46:47,127 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:46:47,276 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:46:47,276 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:46:47,276 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-11 12:46:47,277 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684918108] [2020-10-11 12:46:47,277 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-11 12:46:47,277 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:46:47,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-11 12:46:47,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2020-10-11 12:46:47,277 INFO L87 Difference]: Start difference. First operand 142 states and 354 transitions. Second operand 15 states. [2020-10-11 12:46:47,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:46:47,790 INFO L93 Difference]: Finished difference Result 206 states and 489 transitions. [2020-10-11 12:46:47,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-11 12:46:47,791 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-11 12:46:47,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:46:47,792 INFO L225 Difference]: With dead ends: 206 [2020-10-11 12:46:47,792 INFO L226 Difference]: Without dead ends: 204 [2020-10-11 12:46:47,792 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 [2020-10-11 12:46:47,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2020-10-11 12:46:47,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 143. [2020-10-11 12:46:47,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-10-11 12:46:47,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 356 transitions. [2020-10-11 12:46:47,796 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 356 transitions. Word has length 13 [2020-10-11 12:46:47,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:46:47,797 INFO L481 AbstractCegarLoop]: Abstraction has 143 states and 356 transitions. [2020-10-11 12:46:47,797 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-11 12:46:47,797 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 356 transitions. [2020-10-11 12:46:47,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-11 12:46:47,797 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:46:47,797 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:46:48,006 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117,111 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:46:48,007 INFO L429 AbstractCegarLoop]: === Iteration 119 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:46:48,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:46:48,007 INFO L82 PathProgramCache]: Analyzing trace with hash 1731934909, now seen corresponding path program 93 times [2020-10-11 12:46:48,007 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:46:48,008 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422970547] [2020-10-11 12:46:48,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:46:48,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:46:48,092 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:46:48,092 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422970547] [2020-10-11 12:46:48,092 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1658412148] [2020-10-11 12:46:48,092 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 [2020-10-11 12:46:48,140 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-11 12:46:48,140 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:46:48,141 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-11 12:46:48,141 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:46:48,267 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-11 12:46:49,630 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:46:49,631 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:46:49,631 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-11 12:46:49,631 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700937459] [2020-10-11 12:46:49,632 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-11 12:46:49,632 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:46:49,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-11 12:46:49,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=171, Unknown=1, NotChecked=0, Total=240 [2020-10-11 12:46:49,633 INFO L87 Difference]: Start difference. First operand 143 states and 356 transitions. Second operand 16 states. [2020-10-11 12:46:52,078 WARN L193 SmtUtils]: Spent 2.04 s on a formula simplification that was a NOOP. DAG size: 25 [2020-10-11 12:47:12,782 WARN L193 SmtUtils]: Spent 2.05 s on a formula simplification that was a NOOP. DAG size: 29 [2020-10-11 12:47:48,232 WARN L193 SmtUtils]: Spent 2.05 s on a formula simplification. DAG size of input: 26 DAG size of output: 25 [2020-10-11 12:48:05,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:48:05,771 INFO L93 Difference]: Finished difference Result 260 states and 609 transitions. [2020-10-11 12:48:05,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-11 12:48:05,771 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 13 [2020-10-11 12:48:05,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:48:05,773 INFO L225 Difference]: With dead ends: 260 [2020-10-11 12:48:05,773 INFO L226 Difference]: Without dead ends: 255 [2020-10-11 12:48:05,773 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 344 ImplicationChecksByTransitivity, 28.7s TimeCoverageRelationStatistics Valid=389, Invalid=934, Unknown=9, NotChecked=0, Total=1332 [2020-10-11 12:48:05,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2020-10-11 12:48:05,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 139. [2020-10-11 12:48:05,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2020-10-11 12:48:05,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 339 transitions. [2020-10-11 12:48:05,776 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 339 transitions. Word has length 13 [2020-10-11 12:48:05,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:48:05,776 INFO L481 AbstractCegarLoop]: Abstraction has 139 states and 339 transitions. [2020-10-11 12:48:05,776 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-11 12:48:05,776 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 339 transitions. [2020-10-11 12:48:05,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-11 12:48:05,777 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:48:05,777 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:48:05,977 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 112 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable118 [2020-10-11 12:48:05,978 INFO L429 AbstractCegarLoop]: === Iteration 120 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:48:05,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:48:05,978 INFO L82 PathProgramCache]: Analyzing trace with hash 1931415228, now seen corresponding path program 94 times [2020-10-11 12:48:05,978 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:48:05,979 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49148403] [2020-10-11 12:48:05,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:48:05,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:48:06,066 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:48:06,067 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49148403] [2020-10-11 12:48:06,067 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2123160159] [2020-10-11 12:48:06,067 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 [2020-10-11 12:48:06,105 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-11 12:48:06,106 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:48:06,106 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-11 12:48:06,107 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:48:06,237 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:48:06,237 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:48:06,238 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-11 12:48:06,238 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132660339] [2020-10-11 12:48:06,238 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-11 12:48:06,238 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:48:06,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-11 12:48:06,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2020-10-11 12:48:06,239 INFO L87 Difference]: Start difference. First operand 139 states and 339 transitions. Second operand 15 states. [2020-10-11 12:48:06,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:48:06,458 INFO L93 Difference]: Finished difference Result 194 states and 449 transitions. [2020-10-11 12:48:06,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-11 12:48:06,459 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-11 12:48:06,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:48:06,460 INFO L225 Difference]: With dead ends: 194 [2020-10-11 12:48:06,460 INFO L226 Difference]: Without dead ends: 192 [2020-10-11 12:48:06,460 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 [2020-10-11 12:48:06,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2020-10-11 12:48:06,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 141. [2020-10-11 12:48:06,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-10-11 12:48:06,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 345 transitions. [2020-10-11 12:48:06,463 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 345 transitions. Word has length 13 [2020-10-11 12:48:06,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:48:06,463 INFO L481 AbstractCegarLoop]: Abstraction has 141 states and 345 transitions. [2020-10-11 12:48:06,463 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-11 12:48:06,463 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 345 transitions. [2020-10-11 12:48:06,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-11 12:48:06,464 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:48:06,464 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:48:06,664 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119,113 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:48:06,665 INFO L429 AbstractCegarLoop]: === Iteration 121 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:48:06,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:48:06,665 INFO L82 PathProgramCache]: Analyzing trace with hash 1931416189, now seen corresponding path program 95 times [2020-10-11 12:48:06,665 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:48:06,666 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017321132] [2020-10-11 12:48:06,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:48:06,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:48:06,748 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:48:06,749 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017321132] [2020-10-11 12:48:06,749 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1929852113] [2020-10-11 12:48:06,749 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 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 [2020-10-11 12:48:06,784 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-11 12:48:06,785 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:48:06,785 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-11 12:48:06,786 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:48:06,940 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:48:06,940 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:48:06,940 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-11 12:48:06,940 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600975184] [2020-10-11 12:48:06,941 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-11 12:48:06,941 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:48:06,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-11 12:48:06,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2020-10-11 12:48:06,941 INFO L87 Difference]: Start difference. First operand 141 states and 345 transitions. Second operand 15 states. [2020-10-11 12:48:07,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:48:07,263 INFO L93 Difference]: Finished difference Result 205 states and 471 transitions. [2020-10-11 12:48:07,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-11 12:48:07,263 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-11 12:48:07,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:48:07,264 INFO L225 Difference]: With dead ends: 205 [2020-10-11 12:48:07,264 INFO L226 Difference]: Without dead ends: 203 [2020-10-11 12:48:07,264 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 [2020-10-11 12:48:07,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2020-10-11 12:48:07,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 142. [2020-10-11 12:48:07,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-10-11 12:48:07,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 347 transitions. [2020-10-11 12:48:07,271 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 347 transitions. Word has length 13 [2020-10-11 12:48:07,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:48:07,271 INFO L481 AbstractCegarLoop]: Abstraction has 142 states and 347 transitions. [2020-10-11 12:48:07,271 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-11 12:48:07,271 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 347 transitions. [2020-10-11 12:48:07,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-11 12:48:07,272 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:48:07,272 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:48:07,472 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120,114 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:48:07,473 INFO L429 AbstractCegarLoop]: === Iteration 122 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:48:07,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:48:07,474 INFO L82 PathProgramCache]: Analyzing trace with hash 1931445019, now seen corresponding path program 96 times [2020-10-11 12:48:07,474 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:48:07,474 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395221265] [2020-10-11 12:48:07,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:48:07,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:48:07,572 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:48:07,572 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395221265] [2020-10-11 12:48:07,572 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [555559325] [2020-10-11 12:48:07,573 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 [2020-10-11 12:48:07,613 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-11 12:48:07,613 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:48:07,613 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-11 12:48:07,614 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:48:07,732 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:48:07,733 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:48:07,733 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-11 12:48:07,733 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806040881] [2020-10-11 12:48:07,733 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-11 12:48:07,734 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:48:07,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-11 12:48:07,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2020-10-11 12:48:07,734 INFO L87 Difference]: Start difference. First operand 142 states and 347 transitions. Second operand 15 states. [2020-10-11 12:48:08,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:48:08,006 INFO L93 Difference]: Finished difference Result 201 states and 465 transitions. [2020-10-11 12:48:08,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-11 12:48:08,007 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-11 12:48:08,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:48:08,008 INFO L225 Difference]: With dead ends: 201 [2020-10-11 12:48:08,008 INFO L226 Difference]: Without dead ends: 199 [2020-10-11 12:48:08,009 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=161, Invalid=345, Unknown=0, NotChecked=0, Total=506 [2020-10-11 12:48:08,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2020-10-11 12:48:08,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 137. [2020-10-11 12:48:08,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2020-10-11 12:48:08,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 334 transitions. [2020-10-11 12:48:08,012 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 334 transitions. Word has length 13 [2020-10-11 12:48:08,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:48:08,012 INFO L481 AbstractCegarLoop]: Abstraction has 137 states and 334 transitions. [2020-10-11 12:48:08,012 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-11 12:48:08,012 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 334 transitions. [2020-10-11 12:48:08,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-11 12:48:08,012 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:48:08,012 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:48:08,213 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121,115 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:48:08,213 INFO L429 AbstractCegarLoop]: === Iteration 123 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:48:08,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:48:08,214 INFO L82 PathProgramCache]: Analyzing trace with hash -1726322578, now seen corresponding path program 97 times [2020-10-11 12:48:08,214 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:48:08,214 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556645971] [2020-10-11 12:48:08,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:48:08,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:48:08,293 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:48:08,294 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556645971] [2020-10-11 12:48:08,294 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1101049205] [2020-10-11 12:48:08,294 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 [2020-10-11 12:48:08,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:48:08,344 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-11 12:48:08,345 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:48:08,541 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:48:08,542 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:48:08,542 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-11 12:48:08,542 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081148265] [2020-10-11 12:48:08,542 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-11 12:48:08,543 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:48:08,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-11 12:48:08,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2020-10-11 12:48:08,543 INFO L87 Difference]: Start difference. First operand 137 states and 334 transitions. Second operand 15 states. [2020-10-11 12:48:08,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:48:08,856 INFO L93 Difference]: Finished difference Result 194 states and 449 transitions. [2020-10-11 12:48:08,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-11 12:48:08,857 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-11 12:48:08,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:48:08,858 INFO L225 Difference]: With dead ends: 194 [2020-10-11 12:48:08,858 INFO L226 Difference]: Without dead ends: 192 [2020-10-11 12:48:08,859 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=132, Invalid=330, Unknown=0, NotChecked=0, Total=462 [2020-10-11 12:48:08,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2020-10-11 12:48:08,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 140. [2020-10-11 12:48:08,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-10-11 12:48:08,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 345 transitions. [2020-10-11 12:48:08,863 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 345 transitions. Word has length 13 [2020-10-11 12:48:08,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:48:08,863 INFO L481 AbstractCegarLoop]: Abstraction has 140 states and 345 transitions. [2020-10-11 12:48:08,863 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-11 12:48:08,863 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 345 transitions. [2020-10-11 12:48:08,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-11 12:48:08,864 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:48:08,864 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:48:09,073 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 116 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable122 [2020-10-11 12:48:09,073 INFO L429 AbstractCegarLoop]: === Iteration 124 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:48:09,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:48:09,074 INFO L82 PathProgramCache]: Analyzing trace with hash -1726321617, now seen corresponding path program 98 times [2020-10-11 12:48:09,074 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:48:09,074 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252011280] [2020-10-11 12:48:09,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:48:09,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:48:09,153 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:48:09,154 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252011280] [2020-10-11 12:48:09,154 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [411846415] [2020-10-11 12:48:09,154 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 [2020-10-11 12:48:09,190 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-11 12:48:09,190 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:48:09,191 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-11 12:48:09,191 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:48:09,353 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:48:09,353 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:48:09,353 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-11 12:48:09,354 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071549244] [2020-10-11 12:48:09,354 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-11 12:48:09,354 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:48:09,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-11 12:48:09,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2020-10-11 12:48:09,355 INFO L87 Difference]: Start difference. First operand 140 states and 345 transitions. Second operand 15 states. [2020-10-11 12:48:09,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:48:09,716 INFO L93 Difference]: Finished difference Result 209 states and 478 transitions. [2020-10-11 12:48:09,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-11 12:48:09,716 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-11 12:48:09,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:48:09,717 INFO L225 Difference]: With dead ends: 209 [2020-10-11 12:48:09,717 INFO L226 Difference]: Without dead ends: 207 [2020-10-11 12:48:09,717 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 [2020-10-11 12:48:09,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2020-10-11 12:48:09,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 140. [2020-10-11 12:48:09,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-10-11 12:48:09,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 344 transitions. [2020-10-11 12:48:09,721 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 344 transitions. Word has length 13 [2020-10-11 12:48:09,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:48:09,722 INFO L481 AbstractCegarLoop]: Abstraction has 140 states and 344 transitions. [2020-10-11 12:48:09,722 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-11 12:48:09,722 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 344 transitions. [2020-10-11 12:48:09,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-11 12:48:09,722 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:48:09,722 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:48:09,931 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123,117 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:48:09,932 INFO L429 AbstractCegarLoop]: === Iteration 125 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:48:09,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:48:09,932 INFO L82 PathProgramCache]: Analyzing trace with hash -1726292787, now seen corresponding path program 99 times [2020-10-11 12:48:09,932 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:48:09,933 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409563930] [2020-10-11 12:48:09,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:48:09,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:48:10,013 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:48:10,013 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409563930] [2020-10-11 12:48:10,013 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1150266408] [2020-10-11 12:48:10,013 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 [2020-10-11 12:48:10,051 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-11 12:48:10,052 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:48:10,052 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-11 12:48:10,053 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:48:10,193 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:48:10,193 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:48:10,193 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-11 12:48:10,194 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89819823] [2020-10-11 12:48:10,194 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-11 12:48:10,194 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:48:10,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-11 12:48:10,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2020-10-11 12:48:10,195 INFO L87 Difference]: Start difference. First operand 140 states and 344 transitions. Second operand 15 states. [2020-10-11 12:48:10,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:48:10,531 INFO L93 Difference]: Finished difference Result 202 states and 464 transitions. [2020-10-11 12:48:10,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-11 12:48:10,532 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-11 12:48:10,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:48:10,533 INFO L225 Difference]: With dead ends: 202 [2020-10-11 12:48:10,533 INFO L226 Difference]: Without dead ends: 200 [2020-10-11 12:48:10,533 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 [2020-10-11 12:48:10,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2020-10-11 12:48:10,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 139. [2020-10-11 12:48:10,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2020-10-11 12:48:10,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 341 transitions. [2020-10-11 12:48:10,535 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 341 transitions. Word has length 13 [2020-10-11 12:48:10,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:48:10,535 INFO L481 AbstractCegarLoop]: Abstraction has 139 states and 341 transitions. [2020-10-11 12:48:10,535 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-11 12:48:10,535 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 341 transitions. [2020-10-11 12:48:10,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-11 12:48:10,536 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:48:10,536 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:48:10,736 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 118 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable124 [2020-10-11 12:48:10,737 INFO L429 AbstractCegarLoop]: === Iteration 126 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:48:10,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:48:10,737 INFO L82 PathProgramCache]: Analyzing trace with hash -1705766788, now seen corresponding path program 100 times [2020-10-11 12:48:10,737 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:48:10,738 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102650170] [2020-10-11 12:48:10,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:48:10,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:48:10,822 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:48:10,822 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102650170] [2020-10-11 12:48:10,823 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [334222358] [2020-10-11 12:48:10,823 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 [2020-10-11 12:48:10,868 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-11 12:48:10,868 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:48:10,869 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-11 12:48:10,870 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:48:10,997 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:48:10,997 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:48:10,998 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-11 12:48:10,998 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353340711] [2020-10-11 12:48:10,998 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-11 12:48:10,998 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:48:10,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-11 12:48:10,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2020-10-11 12:48:10,999 INFO L87 Difference]: Start difference. First operand 139 states and 341 transitions. Second operand 15 states. [2020-10-11 12:48:11,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:48:11,309 INFO L93 Difference]: Finished difference Result 201 states and 465 transitions. [2020-10-11 12:48:11,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-11 12:48:11,310 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-11 12:48:11,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:48:11,311 INFO L225 Difference]: With dead ends: 201 [2020-10-11 12:48:11,311 INFO L226 Difference]: Without dead ends: 199 [2020-10-11 12:48:11,311 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=177, Invalid=423, Unknown=0, NotChecked=0, Total=600 [2020-10-11 12:48:11,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2020-10-11 12:48:11,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 141. [2020-10-11 12:48:11,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-10-11 12:48:11,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 349 transitions. [2020-10-11 12:48:11,315 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 349 transitions. Word has length 13 [2020-10-11 12:48:11,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:48:11,315 INFO L481 AbstractCegarLoop]: Abstraction has 141 states and 349 transitions. [2020-10-11 12:48:11,315 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-11 12:48:11,315 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 349 transitions. [2020-10-11 12:48:11,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-11 12:48:11,316 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:48:11,316 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:48:11,517 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 119 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable125 [2020-10-11 12:48:11,518 INFO L429 AbstractCegarLoop]: === Iteration 127 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:48:11,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:48:11,518 INFO L82 PathProgramCache]: Analyzing trace with hash -1705765827, now seen corresponding path program 101 times [2020-10-11 12:48:11,519 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:48:11,519 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764420465] [2020-10-11 12:48:11,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:48:11,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:48:11,599 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:48:11,599 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764420465] [2020-10-11 12:48:11,599 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1699141491] [2020-10-11 12:48:11,599 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 [2020-10-11 12:48:11,636 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-11 12:48:11,636 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:48:11,637 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-11 12:48:11,638 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:48:11,777 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:48:11,777 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:48:11,777 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-11 12:48:11,777 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752216718] [2020-10-11 12:48:11,778 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-11 12:48:11,778 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:48:11,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-11 12:48:11,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2020-10-11 12:48:11,778 INFO L87 Difference]: Start difference. First operand 141 states and 349 transitions. Second operand 15 states. [2020-10-11 12:48:12,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:48:12,242 INFO L93 Difference]: Finished difference Result 215 states and 495 transitions. [2020-10-11 12:48:12,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-11 12:48:12,243 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-11 12:48:12,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:48:12,244 INFO L225 Difference]: With dead ends: 215 [2020-10-11 12:48:12,245 INFO L226 Difference]: Without dead ends: 213 [2020-10-11 12:48:12,245 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=218, Invalid=538, Unknown=0, NotChecked=0, Total=756 [2020-10-11 12:48:12,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2020-10-11 12:48:12,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 142. [2020-10-11 12:48:12,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-10-11 12:48:12,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 353 transitions. [2020-10-11 12:48:12,249 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 353 transitions. Word has length 13 [2020-10-11 12:48:12,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:48:12,249 INFO L481 AbstractCegarLoop]: Abstraction has 142 states and 353 transitions. [2020-10-11 12:48:12,249 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-11 12:48:12,249 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 353 transitions. [2020-10-11 12:48:12,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-11 12:48:12,249 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:48:12,250 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:48:12,454 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126,120 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:48:12,455 INFO L429 AbstractCegarLoop]: === Iteration 128 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:48:12,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:48:12,455 INFO L82 PathProgramCache]: Analyzing trace with hash -1705103698, now seen corresponding path program 102 times [2020-10-11 12:48:12,456 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:48:12,456 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097539716] [2020-10-11 12:48:12,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:48:12,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:48:12,544 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:48:12,545 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097539716] [2020-10-11 12:48:12,545 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1375824072] [2020-10-11 12:48:12,545 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 [2020-10-11 12:48:12,582 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-11 12:48:12,583 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:48:12,583 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-11 12:48:12,584 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:48:12,720 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:48:12,720 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:48:12,720 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-11 12:48:12,720 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921723447] [2020-10-11 12:48:12,721 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-11 12:48:12,721 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:48:12,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-11 12:48:12,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2020-10-11 12:48:12,722 INFO L87 Difference]: Start difference. First operand 142 states and 353 transitions. Second operand 15 states. [2020-10-11 12:48:13,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:48:13,108 INFO L93 Difference]: Finished difference Result 196 states and 461 transitions. [2020-10-11 12:48:13,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-11 12:48:13,109 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-11 12:48:13,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:48:13,109 INFO L225 Difference]: With dead ends: 196 [2020-10-11 12:48:13,110 INFO L226 Difference]: Without dead ends: 194 [2020-10-11 12:48:13,110 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 [2020-10-11 12:48:13,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2020-10-11 12:48:13,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 144. [2020-10-11 12:48:13,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-10-11 12:48:13,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 360 transitions. [2020-10-11 12:48:13,113 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 360 transitions. Word has length 13 [2020-10-11 12:48:13,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:48:13,114 INFO L481 AbstractCegarLoop]: Abstraction has 144 states and 360 transitions. [2020-10-11 12:48:13,114 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-11 12:48:13,114 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 360 transitions. [2020-10-11 12:48:13,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-11 12:48:13,114 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:48:13,114 INFO L421 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:48:13,316 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127,121 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:48:13,317 INFO L429 AbstractCegarLoop]: === Iteration 129 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:48:13,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:48:13,317 INFO L82 PathProgramCache]: Analyzing trace with hash -1705082339, now seen corresponding path program 103 times [2020-10-11 12:48:13,317 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:48:13,318 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023383656] [2020-10-11 12:48:13,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:48:13,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:48:13,404 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:48:13,405 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023383656] [2020-10-11 12:48:13,405 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1297974692] [2020-10-11 12:48:13,405 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 [2020-10-11 12:48:13,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:48:13,442 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-11 12:48:13,442 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:48:13,531 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-11 12:48:13,541 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:48:13,541 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:48:13,541 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-11 12:48:13,542 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028661870] [2020-10-11 12:48:13,542 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-11 12:48:13,542 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:48:13,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-11 12:48:13,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2020-10-11 12:48:13,543 INFO L87 Difference]: Start difference. First operand 144 states and 360 transitions. Second operand 15 states. [2020-10-11 12:48:13,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:48:13,894 INFO L93 Difference]: Finished difference Result 191 states and 460 transitions. [2020-10-11 12:48:13,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-11 12:48:13,895 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-11 12:48:13,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:48:13,896 INFO L225 Difference]: With dead ends: 191 [2020-10-11 12:48:13,896 INFO L226 Difference]: Without dead ends: 186 [2020-10-11 12:48:13,896 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=196, Invalid=404, Unknown=0, NotChecked=0, Total=600 [2020-10-11 12:48:13,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2020-10-11 12:48:13,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 144. [2020-10-11 12:48:13,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-10-11 12:48:13,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 360 transitions. [2020-10-11 12:48:13,899 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 360 transitions. Word has length 13 [2020-10-11 12:48:13,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:48:13,900 INFO L481 AbstractCegarLoop]: Abstraction has 144 states and 360 transitions. [2020-10-11 12:48:13,900 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-11 12:48:13,900 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 360 transitions. [2020-10-11 12:48:13,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-11 12:48:13,900 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:48:13,900 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:48:14,101 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 122 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable128 [2020-10-11 12:48:14,101 INFO L429 AbstractCegarLoop]: === Iteration 130 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:48:14,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:48:14,102 INFO L82 PathProgramCache]: Analyzing trace with hash -1705081378, now seen corresponding path program 104 times [2020-10-11 12:48:14,102 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:48:14,102 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139402494] [2020-10-11 12:48:14,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:48:14,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:48:14,186 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:48:14,186 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139402494] [2020-10-11 12:48:14,186 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1655804516] [2020-10-11 12:48:14,187 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 [2020-10-11 12:48:14,222 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-11 12:48:14,223 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:48:14,223 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-11 12:48:14,224 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:48:14,343 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-11 12:48:14,385 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:48:14,385 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:48:14,385 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-11 12:48:14,386 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810462870] [2020-10-11 12:48:14,386 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-11 12:48:14,386 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:48:14,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-11 12:48:14,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2020-10-11 12:48:14,387 INFO L87 Difference]: Start difference. First operand 144 states and 360 transitions. Second operand 15 states. [2020-10-11 12:48:14,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:48:14,974 INFO L93 Difference]: Finished difference Result 232 states and 551 transitions. [2020-10-11 12:48:14,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-11 12:48:14,975 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-11 12:48:14,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:48:14,976 INFO L225 Difference]: With dead ends: 232 [2020-10-11 12:48:14,976 INFO L226 Difference]: Without dead ends: 227 [2020-10-11 12:48:14,976 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=280, Invalid=650, Unknown=0, NotChecked=0, Total=930 [2020-10-11 12:48:14,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2020-10-11 12:48:14,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 142. [2020-10-11 12:48:14,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-10-11 12:48:14,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 353 transitions. [2020-10-11 12:48:14,980 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 353 transitions. Word has length 13 [2020-10-11 12:48:14,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:48:14,980 INFO L481 AbstractCegarLoop]: Abstraction has 142 states and 353 transitions. [2020-10-11 12:48:14,981 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-11 12:48:14,981 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 353 transitions. [2020-10-11 12:48:14,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-11 12:48:14,981 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:48:14,981 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:48:15,182 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129,123 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:48:15,182 INFO L429 AbstractCegarLoop]: === Iteration 131 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:48:15,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:48:15,182 INFO L82 PathProgramCache]: Analyzing trace with hash -1705073907, now seen corresponding path program 105 times [2020-10-11 12:48:15,182 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:48:15,183 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270629720] [2020-10-11 12:48:15,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:48:15,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:48:15,295 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:48:15,295 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270629720] [2020-10-11 12:48:15,296 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [911131508] [2020-10-11 12:48:15,296 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 [2020-10-11 12:48:15,355 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-11 12:48:15,355 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:48:15,356 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-11 12:48:15,357 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:48:15,522 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:48:15,523 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:48:15,523 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-11 12:48:15,523 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487096609] [2020-10-11 12:48:15,523 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-11 12:48:15,523 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:48:15,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-11 12:48:15,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2020-10-11 12:48:15,524 INFO L87 Difference]: Start difference. First operand 142 states and 353 transitions. Second operand 15 states. [2020-10-11 12:48:16,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:48:16,101 INFO L93 Difference]: Finished difference Result 222 states and 521 transitions. [2020-10-11 12:48:16,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-11 12:48:16,102 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-11 12:48:16,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:48:16,103 INFO L225 Difference]: With dead ends: 222 [2020-10-11 12:48:16,104 INFO L226 Difference]: Without dead ends: 220 [2020-10-11 12:48:16,104 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 240 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=277, Invalid=653, Unknown=0, NotChecked=0, Total=930 [2020-10-11 12:48:16,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2020-10-11 12:48:16,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 144. [2020-10-11 12:48:16,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-10-11 12:48:16,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 360 transitions. [2020-10-11 12:48:16,107 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 360 transitions. Word has length 13 [2020-10-11 12:48:16,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:48:16,108 INFO L481 AbstractCegarLoop]: Abstraction has 144 states and 360 transitions. [2020-10-11 12:48:16,108 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-11 12:48:16,108 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 360 transitions. [2020-10-11 12:48:16,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-11 12:48:16,108 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:48:16,108 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:48:16,308 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130,124 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:48:16,309 INFO L429 AbstractCegarLoop]: === Iteration 132 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:48:16,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:48:16,309 INFO L82 PathProgramCache]: Analyzing trace with hash -1705052548, now seen corresponding path program 106 times [2020-10-11 12:48:16,310 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:48:16,310 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570964992] [2020-10-11 12:48:16,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:48:16,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:48:16,397 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:48:16,397 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570964992] [2020-10-11 12:48:16,398 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2116253996] [2020-10-11 12:48:16,398 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 [2020-10-11 12:48:16,444 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-11 12:48:16,444 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:48:16,445 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-11 12:48:16,446 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:48:16,572 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-11 12:48:16,604 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:48:16,605 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:48:16,605 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-11 12:48:16,605 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068352257] [2020-10-11 12:48:16,606 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-11 12:48:16,606 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:48:16,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-11 12:48:16,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2020-10-11 12:48:16,606 INFO L87 Difference]: Start difference. First operand 144 states and 360 transitions. Second operand 15 states. [2020-10-11 12:48:17,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:48:17,412 INFO L93 Difference]: Finished difference Result 254 states and 608 transitions. [2020-10-11 12:48:17,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-11 12:48:17,413 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-11 12:48:17,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:48:17,413 INFO L225 Difference]: With dead ends: 254 [2020-10-11 12:48:17,414 INFO L226 Difference]: Without dead ends: 246 [2020-10-11 12:48:17,414 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 [2020-10-11 12:48:17,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2020-10-11 12:48:17,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 146. [2020-10-11 12:48:17,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-10-11 12:48:17,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 370 transitions. [2020-10-11 12:48:17,419 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 370 transitions. Word has length 13 [2020-10-11 12:48:17,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:48:17,420 INFO L481 AbstractCegarLoop]: Abstraction has 146 states and 370 transitions. [2020-10-11 12:48:17,420 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-11 12:48:17,420 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 370 transitions. [2020-10-11 12:48:17,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-11 12:48:17,420 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:48:17,420 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:48:17,620 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131,125 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:48:17,621 INFO L429 AbstractCegarLoop]: === Iteration 133 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:48:17,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:48:17,622 INFO L82 PathProgramCache]: Analyzing trace with hash -1705051587, now seen corresponding path program 107 times [2020-10-11 12:48:17,622 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:48:17,622 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356078909] [2020-10-11 12:48:17,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:48:17,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:48:17,704 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:48:17,705 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356078909] [2020-10-11 12:48:17,705 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1552756713] [2020-10-11 12:48:17,705 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 [2020-10-11 12:48:17,743 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-11 12:48:17,743 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:48:17,744 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-11 12:48:17,744 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:48:17,871 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-11 12:48:17,899 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:48:17,900 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:48:17,900 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-11 12:48:17,900 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401738703] [2020-10-11 12:48:17,900 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-11 12:48:17,900 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:48:17,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-11 12:48:17,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-10-11 12:48:17,901 INFO L87 Difference]: Start difference. First operand 146 states and 370 transitions. Second operand 15 states. [2020-10-11 12:48:18,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:48:18,753 INFO L93 Difference]: Finished difference Result 246 states and 581 transitions. [2020-10-11 12:48:18,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-11 12:48:18,754 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-11 12:48:18,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:48:18,755 INFO L225 Difference]: With dead ends: 246 [2020-10-11 12:48:18,755 INFO L226 Difference]: Without dead ends: 238 [2020-10-11 12:48:18,756 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 [2020-10-11 12:48:18,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2020-10-11 12:48:18,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 139. [2020-10-11 12:48:18,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2020-10-11 12:48:18,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 344 transitions. [2020-10-11 12:48:18,760 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 344 transitions. Word has length 13 [2020-10-11 12:48:18,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:48:18,760 INFO L481 AbstractCegarLoop]: Abstraction has 139 states and 344 transitions. [2020-10-11 12:48:18,760 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-11 12:48:18,761 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 344 transitions. [2020-10-11 12:48:18,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-11 12:48:18,761 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:48:18,761 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:48:18,971 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 126 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable132 [2020-10-11 12:48:18,971 INFO L429 AbstractCegarLoop]: === Iteration 134 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:48:18,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:48:18,972 INFO L82 PathProgramCache]: Analyzing trace with hash -1704843267, now seen corresponding path program 108 times [2020-10-11 12:48:18,972 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:48:18,972 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487123700] [2020-10-11 12:48:18,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:48:18,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:48:19,059 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:48:19,060 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487123700] [2020-10-11 12:48:19,060 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [125040559] [2020-10-11 12:48:19,060 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 [2020-10-11 12:48:19,101 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-11 12:48:19,101 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:48:19,102 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-11 12:48:19,103 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:48:19,255 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:48:19,255 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:48:19,255 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-11 12:48:19,255 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135412366] [2020-10-11 12:48:19,256 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-11 12:48:19,256 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:48:19,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-11 12:48:19,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2020-10-11 12:48:19,256 INFO L87 Difference]: Start difference. First operand 139 states and 344 transitions. Second operand 15 states. [2020-10-11 12:48:19,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:48:19,697 INFO L93 Difference]: Finished difference Result 208 states and 483 transitions. [2020-10-11 12:48:19,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-11 12:48:19,699 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-11 12:48:19,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:48:19,700 INFO L225 Difference]: With dead ends: 208 [2020-10-11 12:48:19,700 INFO L226 Difference]: Without dead ends: 206 [2020-10-11 12:48:19,700 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=205, Invalid=497, Unknown=0, NotChecked=0, Total=702 [2020-10-11 12:48:19,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2020-10-11 12:48:19,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 136. [2020-10-11 12:48:19,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-10-11 12:48:19,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 337 transitions. [2020-10-11 12:48:19,703 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 337 transitions. Word has length 13 [2020-10-11 12:48:19,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:48:19,703 INFO L481 AbstractCegarLoop]: Abstraction has 136 states and 337 transitions. [2020-10-11 12:48:19,703 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-11 12:48:19,703 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 337 transitions. [2020-10-11 12:48:19,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-11 12:48:19,704 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:48:19,704 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:48:19,904 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 127 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable133 [2020-10-11 12:48:19,905 INFO L429 AbstractCegarLoop]: === Iteration 135 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:48:19,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:48:19,905 INFO L82 PathProgramCache]: Analyzing trace with hash -1704180177, now seen corresponding path program 109 times [2020-10-11 12:48:19,905 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:48:19,906 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518513145] [2020-10-11 12:48:19,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:48:19,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:48:19,999 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:48:20,000 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518513145] [2020-10-11 12:48:20,000 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1464413257] [2020-10-11 12:48:20,000 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 [2020-10-11 12:48:20,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:48:20,040 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-11 12:48:20,040 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:48:20,163 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:48:20,163 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:48:20,163 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-11 12:48:20,163 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347640938] [2020-10-11 12:48:20,164 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-11 12:48:20,164 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:48:20,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-11 12:48:20,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2020-10-11 12:48:20,164 INFO L87 Difference]: Start difference. First operand 136 states and 337 transitions. Second operand 15 states. [2020-10-11 12:48:20,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:48:20,729 INFO L93 Difference]: Finished difference Result 215 states and 507 transitions. [2020-10-11 12:48:20,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-11 12:48:20,729 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-11 12:48:20,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:48:20,730 INFO L225 Difference]: With dead ends: 215 [2020-10-11 12:48:20,730 INFO L226 Difference]: Without dead ends: 213 [2020-10-11 12:48:20,730 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=265, Invalid=605, Unknown=0, NotChecked=0, Total=870 [2020-10-11 12:48:20,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2020-10-11 12:48:20,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 137. [2020-10-11 12:48:20,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2020-10-11 12:48:20,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 341 transitions. [2020-10-11 12:48:20,733 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 341 transitions. Word has length 13 [2020-10-11 12:48:20,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:48:20,733 INFO L481 AbstractCegarLoop]: Abstraction has 137 states and 341 transitions. [2020-10-11 12:48:20,733 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-11 12:48:20,733 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 341 transitions. [2020-10-11 12:48:20,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-11 12:48:20,733 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:48:20,733 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:48:20,934 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 128 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable134 [2020-10-11 12:48:20,934 INFO L429 AbstractCegarLoop]: === Iteration 136 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:48:20,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:48:20,935 INFO L82 PathProgramCache]: Analyzing trace with hash -1704158818, now seen corresponding path program 110 times [2020-10-11 12:48:20,935 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:48:20,935 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56138208] [2020-10-11 12:48:20,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:48:20,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:48:21,021 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:48:21,022 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56138208] [2020-10-11 12:48:21,022 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [529937688] [2020-10-11 12:48:21,022 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 [2020-10-11 12:48:21,066 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-11 12:48:21,066 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:48:21,067 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-11 12:48:21,069 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:48:21,183 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-11 12:48:21,194 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:48:21,194 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:48:21,195 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-11 12:48:21,195 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295900295] [2020-10-11 12:48:21,195 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-11 12:48:21,196 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:48:21,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-11 12:48:21,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-10-11 12:48:21,196 INFO L87 Difference]: Start difference. First operand 137 states and 341 transitions. Second operand 15 states. [2020-10-11 12:48:21,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:48:21,812 INFO L93 Difference]: Finished difference Result 236 states and 563 transitions. [2020-10-11 12:48:21,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-11 12:48:21,813 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-11 12:48:21,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:48:21,814 INFO L225 Difference]: With dead ends: 236 [2020-10-11 12:48:21,814 INFO L226 Difference]: Without dead ends: 228 [2020-10-11 12:48:21,815 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 [2020-10-11 12:48:21,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2020-10-11 12:48:21,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 137. [2020-10-11 12:48:21,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2020-10-11 12:48:21,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 341 transitions. [2020-10-11 12:48:21,818 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 341 transitions. Word has length 13 [2020-10-11 12:48:21,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:48:21,819 INFO L481 AbstractCegarLoop]: Abstraction has 137 states and 341 transitions. [2020-10-11 12:48:21,819 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-11 12:48:21,819 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 341 transitions. [2020-10-11 12:48:21,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-11 12:48:21,819 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:48:21,819 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:48:22,022 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 129 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable135 [2020-10-11 12:48:22,023 INFO L429 AbstractCegarLoop]: === Iteration 137 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:48:22,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:48:22,023 INFO L82 PathProgramCache]: Analyzing trace with hash -1704157857, now seen corresponding path program 111 times [2020-10-11 12:48:22,023 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:48:22,024 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031902214] [2020-10-11 12:48:22,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:48:22,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:48:22,113 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:48:22,113 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031902214] [2020-10-11 12:48:22,113 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2068534425] [2020-10-11 12:48:22,114 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 [2020-10-11 12:48:22,155 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-11 12:48:22,156 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:48:22,157 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-11 12:48:22,158 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:48:22,292 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-11 12:48:22,302 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:48:22,303 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:48:22,303 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-11 12:48:22,303 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118796230] [2020-10-11 12:48:22,304 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-11 12:48:22,304 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:48:22,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-11 12:48:22,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2020-10-11 12:48:22,304 INFO L87 Difference]: Start difference. First operand 137 states and 341 transitions. Second operand 15 states. [2020-10-11 12:48:22,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:48:22,990 INFO L93 Difference]: Finished difference Result 241 states and 576 transitions. [2020-10-11 12:48:22,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-11 12:48:22,991 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-11 12:48:22,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:48:22,992 INFO L225 Difference]: With dead ends: 241 [2020-10-11 12:48:22,992 INFO L226 Difference]: Without dead ends: 233 [2020-10-11 12:48:22,992 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 270 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=349, Invalid=773, Unknown=0, NotChecked=0, Total=1122 [2020-10-11 12:48:22,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2020-10-11 12:48:22,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 133. [2020-10-11 12:48:22,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2020-10-11 12:48:22,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 324 transitions. [2020-10-11 12:48:22,995 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 324 transitions. Word has length 13 [2020-10-11 12:48:22,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:48:22,996 INFO L481 AbstractCegarLoop]: Abstraction has 133 states and 324 transitions. [2020-10-11 12:48:22,996 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-11 12:48:22,996 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 324 transitions. [2020-10-11 12:48:22,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-11 12:48:22,996 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:48:22,996 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:48:23,197 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 130 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable136 [2020-10-11 12:48:23,197 INFO L429 AbstractCegarLoop]: === Iteration 138 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:48:23,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:48:23,198 INFO L82 PathProgramCache]: Analyzing trace with hash -1704129027, now seen corresponding path program 112 times [2020-10-11 12:48:23,198 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:48:23,198 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346984542] [2020-10-11 12:48:23,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:48:23,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:48:23,285 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:48:23,285 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346984542] [2020-10-11 12:48:23,286 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1991560047] [2020-10-11 12:48:23,286 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 [2020-10-11 12:48:23,322 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-11 12:48:23,322 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:48:23,323 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-11 12:48:23,324 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:48:23,439 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-11 12:48:23,451 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:48:23,451 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:48:23,451 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-11 12:48:23,451 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667493697] [2020-10-11 12:48:23,452 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-11 12:48:23,452 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:48:23,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-11 12:48:23,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2020-10-11 12:48:23,452 INFO L87 Difference]: Start difference. First operand 133 states and 324 transitions. Second operand 15 states. [2020-10-11 12:48:24,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:48:24,090 INFO L93 Difference]: Finished difference Result 232 states and 545 transitions. [2020-10-11 12:48:24,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-11 12:48:24,090 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-11 12:48:24,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:48:24,091 INFO L225 Difference]: With dead ends: 232 [2020-10-11 12:48:24,091 INFO L226 Difference]: Without dead ends: 224 [2020-10-11 12:48:24,092 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 [2020-10-11 12:48:24,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2020-10-11 12:48:24,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 130. [2020-10-11 12:48:24,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-10-11 12:48:24,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 305 transitions. [2020-10-11 12:48:24,095 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 305 transitions. Word has length 13 [2020-10-11 12:48:24,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:48:24,096 INFO L481 AbstractCegarLoop]: Abstraction has 130 states and 305 transitions. [2020-10-11 12:48:24,096 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-11 12:48:24,096 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 305 transitions. [2020-10-11 12:48:24,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-11 12:48:24,096 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:48:24,097 INFO L421 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:48:24,305 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137,131 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:48:24,306 INFO L429 AbstractCegarLoop]: === Iteration 139 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:48:24,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:48:24,306 INFO L82 PathProgramCache]: Analyzing trace with hash 1141268816, now seen corresponding path program 6 times [2020-10-11 12:48:24,306 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:48:24,307 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346668644] [2020-10-11 12:48:24,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:48:24,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:48:24,414 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:48:24,415 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346668644] [2020-10-11 12:48:24,415 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [440980933] [2020-10-11 12:48:24,415 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 [2020-10-11 12:48:24,452 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2020-10-11 12:48:24,452 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:48:24,453 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:48:24,454 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:48:24,618 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-11 12:48:24,648 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:48:24,648 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:48:24,648 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 16 [2020-10-11 12:48:24,648 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19535888] [2020-10-11 12:48:24,648 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-11 12:48:24,649 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:48:24,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-11 12:48:24,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=223, Unknown=0, NotChecked=0, Total=306 [2020-10-11 12:48:24,649 INFO L87 Difference]: Start difference. First operand 130 states and 305 transitions. Second operand 18 states. [2020-10-11 12:48:24,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:48:24,956 INFO L93 Difference]: Finished difference Result 185 states and 431 transitions. [2020-10-11 12:48:24,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-11 12:48:24,958 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 13 [2020-10-11 12:48:24,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:48:24,959 INFO L225 Difference]: With dead ends: 185 [2020-10-11 12:48:24,959 INFO L226 Difference]: Without dead ends: 180 [2020-10-11 12:48:24,960 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=188, Invalid=412, Unknown=0, NotChecked=0, Total=600 [2020-10-11 12:48:24,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2020-10-11 12:48:24,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 139. [2020-10-11 12:48:24,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2020-10-11 12:48:24,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 341 transitions. [2020-10-11 12:48:24,964 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 341 transitions. Word has length 13 [2020-10-11 12:48:24,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:48:24,965 INFO L481 AbstractCegarLoop]: Abstraction has 139 states and 341 transitions. [2020-10-11 12:48:24,965 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-11 12:48:24,965 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 341 transitions. [2020-10-11 12:48:24,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-11 12:48:24,966 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:48:24,966 INFO L421 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:48:25,177 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 132 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable138 [2020-10-11 12:48:25,177 INFO L429 AbstractCegarLoop]: === Iteration 140 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:48:25,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:48:25,178 INFO L82 PathProgramCache]: Analyzing trace with hash 33766584, now seen corresponding path program 21 times [2020-10-11 12:48:25,178 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:48:25,179 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200575082] [2020-10-11 12:48:25,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:48:25,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:48:25,374 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:48:25,374 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200575082] [2020-10-11 12:48:25,374 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1177632044] [2020-10-11 12:48:25,374 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 [2020-10-11 12:48:25,425 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-10-11 12:48:25,425 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:48:25,426 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:48:25,427 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:48:25,626 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:48:25,626 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:48:25,626 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:48:25,627 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343057496] [2020-10-11 12:48:25,627 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:48:25,627 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:48:25,627 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:48:25,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=189, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:48:25,627 INFO L87 Difference]: Start difference. First operand 139 states and 341 transitions. Second operand 17 states. [2020-10-11 12:48:25,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:48:25,691 INFO L93 Difference]: Finished difference Result 180 states and 423 transitions. [2020-10-11 12:48:25,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-11 12:48:25,692 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 13 [2020-10-11 12:48:25,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:48:25,692 INFO L225 Difference]: With dead ends: 180 [2020-10-11 12:48:25,692 INFO L226 Difference]: Without dead ends: 177 [2020-10-11 12:48:25,692 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 [2020-10-11 12:48:25,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2020-10-11 12:48:25,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 148. [2020-10-11 12:48:25,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2020-10-11 12:48:25,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 362 transitions. [2020-10-11 12:48:25,695 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 362 transitions. Word has length 13 [2020-10-11 12:48:25,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:48:25,696 INFO L481 AbstractCegarLoop]: Abstraction has 148 states and 362 transitions. [2020-10-11 12:48:25,696 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:48:25,696 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 362 transitions. [2020-10-11 12:48:25,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-11 12:48:25,696 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:48:25,696 INFO L421 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:48:25,897 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 133 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable139 [2020-10-11 12:48:25,897 INFO L429 AbstractCegarLoop]: === Iteration 141 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:48:25,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:48:25,898 INFO L82 PathProgramCache]: Analyzing trace with hash -913710200, now seen corresponding path program 22 times [2020-10-11 12:48:25,898 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:48:25,898 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501643899] [2020-10-11 12:48:25,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:48:25,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:48:26,055 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:48:26,055 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501643899] [2020-10-11 12:48:26,055 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1747191033] [2020-10-11 12:48:26,056 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 [2020-10-11 12:48:26,093 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-11 12:48:26,093 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:48:26,094 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:48:26,095 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:48:26,258 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:48:26,259 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:48:26,259 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:48:26,259 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813777819] [2020-10-11 12:48:26,259 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:48:26,260 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:48:26,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:48:26,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:48:26,260 INFO L87 Difference]: Start difference. First operand 148 states and 362 transitions. Second operand 17 states. [2020-10-11 12:48:26,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:48:26,345 INFO L93 Difference]: Finished difference Result 197 states and 456 transitions. [2020-10-11 12:48:26,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-11 12:48:26,346 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 13 [2020-10-11 12:48:26,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:48:26,346 INFO L225 Difference]: With dead ends: 197 [2020-10-11 12:48:26,347 INFO L226 Difference]: Without dead ends: 194 [2020-10-11 12:48:26,347 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2020-10-11 12:48:26,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2020-10-11 12:48:26,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 148. [2020-10-11 12:48:26,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2020-10-11 12:48:26,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 362 transitions. [2020-10-11 12:48:26,350 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 362 transitions. Word has length 13 [2020-10-11 12:48:26,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:48:26,350 INFO L481 AbstractCegarLoop]: Abstraction has 148 states and 362 transitions. [2020-10-11 12:48:26,350 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:48:26,351 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 362 transitions. [2020-10-11 12:48:26,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-11 12:48:26,351 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:48:26,351 INFO L421 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:48:26,558 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140,134 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:48:26,558 INFO L429 AbstractCegarLoop]: === Iteration 142 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:48:26,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:48:26,559 INFO L82 PathProgramCache]: Analyzing trace with hash -1775557960, now seen corresponding path program 23 times [2020-10-11 12:48:26,559 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:48:26,559 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302222574] [2020-10-11 12:48:26,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:48:26,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:48:26,703 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:48:26,703 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302222574] [2020-10-11 12:48:26,703 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1860172808] [2020-10-11 12:48:26,704 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 [2020-10-11 12:48:26,738 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2020-10-11 12:48:26,739 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:48:26,739 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:48:26,740 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:48:26,950 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:48:26,950 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:48:26,951 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:48:26,951 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483628025] [2020-10-11 12:48:26,951 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:48:26,951 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:48:26,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:48:26,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:48:26,952 INFO L87 Difference]: Start difference. First operand 148 states and 362 transitions. Second operand 17 states. [2020-10-11 12:48:27,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:48:27,091 INFO L93 Difference]: Finished difference Result 196 states and 456 transitions. [2020-10-11 12:48:27,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-11 12:48:27,093 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 13 [2020-10-11 12:48:27,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:48:27,094 INFO L225 Difference]: With dead ends: 196 [2020-10-11 12:48:27,094 INFO L226 Difference]: Without dead ends: 193 [2020-10-11 12:48:27,094 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-10-11 12:48:27,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2020-10-11 12:48:27,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 149. [2020-10-11 12:48:27,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2020-10-11 12:48:27,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 367 transitions. [2020-10-11 12:48:27,099 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 367 transitions. Word has length 13 [2020-10-11 12:48:27,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:48:27,099 INFO L481 AbstractCegarLoop]: Abstraction has 149 states and 367 transitions. [2020-10-11 12:48:27,099 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:48:27,099 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 367 transitions. [2020-10-11 12:48:27,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-11 12:48:27,100 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:48:27,100 INFO L421 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:48:27,310 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141,135 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:48:27,310 INFO L429 AbstractCegarLoop]: === Iteration 143 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:48:27,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:48:27,311 INFO L82 PathProgramCache]: Analyzing trace with hash -1110622840, now seen corresponding path program 24 times [2020-10-11 12:48:27,311 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:48:27,311 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015944763] [2020-10-11 12:48:27,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:48:27,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:48:27,492 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:48:27,492 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015944763] [2020-10-11 12:48:27,492 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1369588686] [2020-10-11 12:48:27,492 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 [2020-10-11 12:48:27,554 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2020-10-11 12:48:27,555 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:48:27,556 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:48:27,557 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:48:27,757 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:48:27,757 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:48:27,757 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:48:27,758 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325511979] [2020-10-11 12:48:27,758 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:48:27,758 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:48:27,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:48:27,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=207, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:48:27,759 INFO L87 Difference]: Start difference. First operand 149 states and 367 transitions. Second operand 17 states. [2020-10-11 12:48:27,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:48:27,900 INFO L93 Difference]: Finished difference Result 195 states and 456 transitions. [2020-10-11 12:48:27,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-11 12:48:27,901 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 13 [2020-10-11 12:48:27,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:48:27,901 INFO L225 Difference]: With dead ends: 195 [2020-10-11 12:48:27,901 INFO L226 Difference]: Without dead ends: 192 [2020-10-11 12:48:27,902 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=113, Invalid=267, Unknown=0, NotChecked=0, Total=380 [2020-10-11 12:48:27,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2020-10-11 12:48:27,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 150. [2020-10-11 12:48:27,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2020-10-11 12:48:27,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 372 transitions. [2020-10-11 12:48:27,904 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 372 transitions. Word has length 13 [2020-10-11 12:48:27,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:48:27,904 INFO L481 AbstractCegarLoop]: Abstraction has 150 states and 372 transitions. [2020-10-11 12:48:27,904 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:48:27,904 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 372 transitions. [2020-10-11 12:48:27,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-11 12:48:27,905 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:48:27,905 INFO L421 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:48:28,105 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142,136 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:48:28,105 INFO L429 AbstractCegarLoop]: === Iteration 144 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:48:28,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:48:28,106 INFO L82 PathProgramCache]: Analyzing trace with hash -1089173320, now seen corresponding path program 25 times [2020-10-11 12:48:28,106 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:48:28,106 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193260504] [2020-10-11 12:48:28,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:48:28,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:48:28,230 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:48:28,230 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193260504] [2020-10-11 12:48:28,230 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [374493473] [2020-10-11 12:48:28,231 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 [2020-10-11 12:48:28,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:48:28,273 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:48:28,274 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:48:28,442 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:48:28,443 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:48:28,443 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:48:28,443 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179991859] [2020-10-11 12:48:28,443 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:48:28,443 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:48:28,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:48:28,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:48:28,444 INFO L87 Difference]: Start difference. First operand 150 states and 372 transitions. Second operand 17 states. [2020-10-11 12:48:28,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:48:28,623 INFO L93 Difference]: Finished difference Result 194 states and 456 transitions. [2020-10-11 12:48:28,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-11 12:48:28,624 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 13 [2020-10-11 12:48:28,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:48:28,624 INFO L225 Difference]: With dead ends: 194 [2020-10-11 12:48:28,625 INFO L226 Difference]: Without dead ends: 191 [2020-10-11 12:48:28,625 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=129, Invalid=291, Unknown=0, NotChecked=0, Total=420 [2020-10-11 12:48:28,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2020-10-11 12:48:28,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 152. [2020-10-11 12:48:28,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2020-10-11 12:48:28,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 379 transitions. [2020-10-11 12:48:28,629 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 379 transitions. Word has length 13 [2020-10-11 12:48:28,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:48:28,629 INFO L481 AbstractCegarLoop]: Abstraction has 152 states and 379 transitions. [2020-10-11 12:48:28,629 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:48:28,629 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 379 transitions. [2020-10-11 12:48:28,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-11 12:48:28,630 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:48:28,630 INFO L421 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:48:28,838 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143,137 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:48:28,839 INFO L429 AbstractCegarLoop]: === Iteration 145 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:48:28,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:48:28,839 INFO L82 PathProgramCache]: Analyzing trace with hash -1088481400, now seen corresponding path program 26 times [2020-10-11 12:48:28,839 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:48:28,840 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722436931] [2020-10-11 12:48:28,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:48:28,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:48:28,946 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:48:28,946 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722436931] [2020-10-11 12:48:28,946 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1463855036] [2020-10-11 12:48:28,946 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 [2020-10-11 12:48:28,982 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-11 12:48:28,982 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:48:28,983 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:48:28,983 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:48:29,152 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:48:29,152 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:48:29,152 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:48:29,152 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519515194] [2020-10-11 12:48:29,152 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:48:29,152 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:48:29,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:48:29,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:48:29,153 INFO L87 Difference]: Start difference. First operand 152 states and 379 transitions. Second operand 17 states. [2020-10-11 12:48:29,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:48:29,367 INFO L93 Difference]: Finished difference Result 193 states and 456 transitions. [2020-10-11 12:48:29,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-11 12:48:29,368 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 13 [2020-10-11 12:48:29,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:48:29,368 INFO L225 Difference]: With dead ends: 193 [2020-10-11 12:48:29,368 INFO L226 Difference]: Without dead ends: 190 [2020-10-11 12:48:29,369 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=148, Invalid=314, Unknown=0, NotChecked=0, Total=462 [2020-10-11 12:48:29,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2020-10-11 12:48:29,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 154. [2020-10-11 12:48:29,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2020-10-11 12:48:29,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 386 transitions. [2020-10-11 12:48:29,371 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 386 transitions. Word has length 13 [2020-10-11 12:48:29,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:48:29,371 INFO L481 AbstractCegarLoop]: Abstraction has 154 states and 386 transitions. [2020-10-11 12:48:29,371 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:48:29,371 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 386 transitions. [2020-10-11 12:48:29,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-11 12:48:29,372 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:48:29,372 INFO L421 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:48:29,572 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 138 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable144 [2020-10-11 12:48:29,572 INFO L429 AbstractCegarLoop]: === Iteration 146 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:48:29,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:48:29,573 INFO L82 PathProgramCache]: Analyzing trace with hash -1088459080, now seen corresponding path program 27 times [2020-10-11 12:48:29,573 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:48:29,574 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24799286] [2020-10-11 12:48:29,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:48:29,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:48:29,689 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:48:29,689 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24799286] [2020-10-11 12:48:29,689 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2052916633] [2020-10-11 12:48:29,690 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 [2020-10-11 12:48:29,729 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-10-11 12:48:29,730 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:48:29,731 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:48:29,731 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:48:29,897 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-11 12:48:29,911 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:48:29,911 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:48:29,912 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:48:29,912 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680211041] [2020-10-11 12:48:29,912 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:48:29,912 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:48:29,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:48:29,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:48:29,913 INFO L87 Difference]: Start difference. First operand 154 states and 386 transitions. Second operand 17 states. [2020-10-11 12:48:30,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:48:30,164 INFO L93 Difference]: Finished difference Result 202 states and 480 transitions. [2020-10-11 12:48:30,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-11 12:48:30,165 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 13 [2020-10-11 12:48:30,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:48:30,166 INFO L225 Difference]: With dead ends: 202 [2020-10-11 12:48:30,166 INFO L226 Difference]: Without dead ends: 196 [2020-10-11 12:48:30,167 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=178, Invalid=374, Unknown=0, NotChecked=0, Total=552 [2020-10-11 12:48:30,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2020-10-11 12:48:30,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 151. [2020-10-11 12:48:30,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2020-10-11 12:48:30,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 382 transitions. [2020-10-11 12:48:30,170 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 382 transitions. Word has length 13 [2020-10-11 12:48:30,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:48:30,170 INFO L481 AbstractCegarLoop]: Abstraction has 151 states and 382 transitions. [2020-10-11 12:48:30,170 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:48:30,170 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 382 transitions. [2020-10-11 12:48:30,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:48:30,171 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:48:30,171 INFO L421 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:48:30,379 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 139 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable145 [2020-10-11 12:48:30,379 INFO L429 AbstractCegarLoop]: === Iteration 147 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:48:30,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:48:30,380 INFO L82 PathProgramCache]: Analyzing trace with hash -195697579, now seen corresponding path program 113 times [2020-10-11 12:48:30,380 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:48:30,380 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404317780] [2020-10-11 12:48:30,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:48:30,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:48:30,500 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:48:30,500 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404317780] [2020-10-11 12:48:30,501 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [822986154] [2020-10-11 12:48:30,501 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 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 [2020-10-11 12:48:30,535 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-11 12:48:30,536 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:48:30,537 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:48:30,537 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:48:30,711 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:48:30,712 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:48:30,712 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:48:30,712 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434591330] [2020-10-11 12:48:30,712 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:48:30,712 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:48:30,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:48:30,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=189, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:48:30,713 INFO L87 Difference]: Start difference. First operand 151 states and 382 transitions. Second operand 17 states. [2020-10-11 12:48:30,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:48:30,777 INFO L93 Difference]: Finished difference Result 188 states and 456 transitions. [2020-10-11 12:48:30,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-11 12:48:30,777 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-11 12:48:30,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:48:30,778 INFO L225 Difference]: With dead ends: 188 [2020-10-11 12:48:30,778 INFO L226 Difference]: Without dead ends: 186 [2020-10-11 12:48:30,778 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=83, Invalid=189, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:48:30,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2020-10-11 12:48:30,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 159. [2020-10-11 12:48:30,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2020-10-11 12:48:30,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 406 transitions. [2020-10-11 12:48:30,781 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 406 transitions. Word has length 14 [2020-10-11 12:48:30,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:48:30,782 INFO L481 AbstractCegarLoop]: Abstraction has 159 states and 406 transitions. [2020-10-11 12:48:30,782 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:48:30,782 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 406 transitions. [2020-10-11 12:48:30,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:48:30,782 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:48:30,782 INFO L421 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:48:30,983 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 140 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable146 [2020-10-11 12:48:30,983 INFO L429 AbstractCegarLoop]: === Iteration 148 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:48:30,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:48:30,984 INFO L82 PathProgramCache]: Analyzing trace with hash -195696618, now seen corresponding path program 114 times [2020-10-11 12:48:30,984 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:48:30,984 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253693773] [2020-10-11 12:48:30,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:48:30,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:48:31,109 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:48:31,110 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253693773] [2020-10-11 12:48:31,110 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [311137215] [2020-10-11 12:48:31,110 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 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 [2020-10-11 12:48:31,148 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-11 12:48:31,149 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:48:31,149 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:48:31,150 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:48:31,360 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:48:31,361 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:48:31,361 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:48:31,361 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163481435] [2020-10-11 12:48:31,361 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:48:31,361 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:48:31,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:48:31,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=189, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:48:31,362 INFO L87 Difference]: Start difference. First operand 159 states and 406 transitions. Second operand 17 states. [2020-10-11 12:48:31,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:48:31,602 INFO L93 Difference]: Finished difference Result 199 states and 478 transitions. [2020-10-11 12:48:31,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-11 12:48:31,602 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-11 12:48:31,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:48:31,603 INFO L225 Difference]: With dead ends: 199 [2020-10-11 12:48:31,603 INFO L226 Difference]: Without dead ends: 197 [2020-10-11 12:48:31,603 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 [2020-10-11 12:48:31,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2020-10-11 12:48:31,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 157. [2020-10-11 12:48:31,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2020-10-11 12:48:31,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 400 transitions. [2020-10-11 12:48:31,606 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 400 transitions. Word has length 14 [2020-10-11 12:48:31,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:48:31,606 INFO L481 AbstractCegarLoop]: Abstraction has 157 states and 400 transitions. [2020-10-11 12:48:31,606 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:48:31,606 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 400 transitions. [2020-10-11 12:48:31,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:48:31,607 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:48:31,607 INFO L421 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:48:31,807 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 141 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable147 [2020-10-11 12:48:31,807 INFO L429 AbstractCegarLoop]: === Iteration 149 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:48:31,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:48:31,808 INFO L82 PathProgramCache]: Analyzing trace with hash -195667788, now seen corresponding path program 115 times [2020-10-11 12:48:31,808 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:48:31,809 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899491592] [2020-10-11 12:48:31,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:48:31,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:48:31,919 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:48:31,920 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899491592] [2020-10-11 12:48:31,920 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [483847375] [2020-10-11 12:48:31,920 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 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 [2020-10-11 12:48:31,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:48:31,958 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:48:31,958 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:48:32,191 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:48:32,191 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:48:32,191 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:48:32,191 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016801631] [2020-10-11 12:48:32,192 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:48:32,192 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:48:32,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:48:32,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:48:32,192 INFO L87 Difference]: Start difference. First operand 157 states and 400 transitions. Second operand 17 states. [2020-10-11 12:48:32,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:48:32,499 INFO L93 Difference]: Finished difference Result 210 states and 500 transitions. [2020-10-11 12:48:32,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-11 12:48:32,500 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-11 12:48:32,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:48:32,500 INFO L225 Difference]: With dead ends: 210 [2020-10-11 12:48:32,501 INFO L226 Difference]: Without dead ends: 208 [2020-10-11 12:48:32,501 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=174, Invalid=332, Unknown=0, NotChecked=0, Total=506 [2020-10-11 12:48:32,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2020-10-11 12:48:32,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 155. [2020-10-11 12:48:32,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2020-10-11 12:48:32,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 394 transitions. [2020-10-11 12:48:32,504 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 394 transitions. Word has length 14 [2020-10-11 12:48:32,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:48:32,504 INFO L481 AbstractCegarLoop]: Abstraction has 155 states and 394 transitions. [2020-10-11 12:48:32,504 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:48:32,504 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 394 transitions. [2020-10-11 12:48:32,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:48:32,505 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:48:32,505 INFO L421 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:48:32,705 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 142 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable148 [2020-10-11 12:48:32,706 INFO L429 AbstractCegarLoop]: === Iteration 150 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:48:32,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:48:32,706 INFO L82 PathProgramCache]: Analyzing trace with hash -194774058, now seen corresponding path program 116 times [2020-10-11 12:48:32,706 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:48:32,707 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767436538] [2020-10-11 12:48:32,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:48:32,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:48:32,814 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:48:32,814 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767436538] [2020-10-11 12:48:32,814 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1702638474] [2020-10-11 12:48:32,814 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 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 [2020-10-11 12:48:32,850 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-11 12:48:32,850 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:48:32,851 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:48:32,852 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:48:33,097 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:48:33,098 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:48:33,098 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:48:33,098 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107750545] [2020-10-11 12:48:33,098 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:48:33,099 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:48:33,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:48:33,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=185, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:48:33,099 INFO L87 Difference]: Start difference. First operand 155 states and 394 transitions. Second operand 17 states. [2020-10-11 12:48:33,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:48:33,462 INFO L93 Difference]: Finished difference Result 210 states and 500 transitions. [2020-10-11 12:48:33,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-11 12:48:33,463 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-11 12:48:33,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:48:33,463 INFO L225 Difference]: With dead ends: 210 [2020-10-11 12:48:33,463 INFO L226 Difference]: Without dead ends: 208 [2020-10-11 12:48:33,463 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 [2020-10-11 12:48:33,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2020-10-11 12:48:33,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 157. [2020-10-11 12:48:33,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2020-10-11 12:48:33,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 400 transitions. [2020-10-11 12:48:33,467 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 400 transitions. Word has length 14 [2020-10-11 12:48:33,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:48:33,468 INFO L481 AbstractCegarLoop]: Abstraction has 157 states and 400 transitions. [2020-10-11 12:48:33,468 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:48:33,468 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 400 transitions. [2020-10-11 12:48:33,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:48:33,468 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:48:33,468 INFO L421 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:48:33,675 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 143 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable149 [2020-10-11 12:48:33,675 INFO L429 AbstractCegarLoop]: === Iteration 151 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:48:33,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:48:33,676 INFO L82 PathProgramCache]: Analyzing trace with hash -194773097, now seen corresponding path program 117 times [2020-10-11 12:48:33,676 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:48:33,676 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076000857] [2020-10-11 12:48:33,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:48:33,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:48:33,789 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:48:33,789 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076000857] [2020-10-11 12:48:33,789 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [891970685] [2020-10-11 12:48:33,789 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 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 [2020-10-11 12:48:33,826 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-11 12:48:33,826 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:48:33,827 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:48:33,827 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:48:37,794 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:48:37,794 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:48:37,794 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:48:37,794 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741949184] [2020-10-11 12:48:37,794 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:48:37,794 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:48:37,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:48:37,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=187, Unknown=1, NotChecked=0, Total=272 [2020-10-11 12:48:37,795 INFO L87 Difference]: Start difference. First operand 157 states and 400 transitions. Second operand 17 states. [2020-10-11 12:48:41,993 WARN L193 SmtUtils]: Spent 4.10 s on a formula simplification. DAG size of input: 41 DAG size of output: 37 [2020-10-11 12:48:42,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:48:42,280 INFO L93 Difference]: Finished difference Result 218 states and 517 transitions. [2020-10-11 12:48:42,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-11 12:48:42,281 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-11 12:48:42,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:48:42,282 INFO L225 Difference]: With dead ends: 218 [2020-10-11 12:48:42,283 INFO L226 Difference]: Without dead ends: 216 [2020-10-11 12:48:42,283 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 8.3s TimeCoverageRelationStatistics Valid=183, Invalid=368, Unknown=1, NotChecked=0, Total=552 [2020-10-11 12:48:42,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2020-10-11 12:48:42,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 156. [2020-10-11 12:48:42,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2020-10-11 12:48:42,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 397 transitions. [2020-10-11 12:48:42,287 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 397 transitions. Word has length 14 [2020-10-11 12:48:42,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:48:42,287 INFO L481 AbstractCegarLoop]: Abstraction has 156 states and 397 transitions. [2020-10-11 12:48:42,287 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:48:42,287 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 397 transitions. [2020-10-11 12:48:42,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:48:42,288 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:48:42,288 INFO L421 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:48:42,488 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150,144 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:48:42,488 INFO L429 AbstractCegarLoop]: === Iteration 152 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:48:42,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:48:42,489 INFO L82 PathProgramCache]: Analyzing trace with hash -194744267, now seen corresponding path program 118 times [2020-10-11 12:48:42,489 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:48:42,489 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480959664] [2020-10-11 12:48:42,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:48:42,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:48:42,608 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:48:42,609 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480959664] [2020-10-11 12:48:42,609 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [390859544] [2020-10-11 12:48:42,609 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 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 [2020-10-11 12:48:42,646 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-11 12:48:42,646 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:48:42,648 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:48:42,648 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:48:42,984 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:48:42,985 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:48:42,985 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:48:42,985 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187959262] [2020-10-11 12:48:42,985 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:48:42,986 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:48:42,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:48:42,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=188, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:48:42,986 INFO L87 Difference]: Start difference. First operand 156 states and 397 transitions. Second operand 17 states. [2020-10-11 12:48:43,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:48:43,395 INFO L93 Difference]: Finished difference Result 212 states and 507 transitions. [2020-10-11 12:48:43,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-11 12:48:43,397 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-11 12:48:43,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:48:43,398 INFO L225 Difference]: With dead ends: 212 [2020-10-11 12:48:43,398 INFO L226 Difference]: Without dead ends: 210 [2020-10-11 12:48:43,398 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=190, Invalid=362, Unknown=0, NotChecked=0, Total=552 [2020-10-11 12:48:43,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2020-10-11 12:48:43,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 153. [2020-10-11 12:48:43,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2020-10-11 12:48:43,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 388 transitions. [2020-10-11 12:48:43,402 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 388 transitions. Word has length 14 [2020-10-11 12:48:43,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:48:43,402 INFO L481 AbstractCegarLoop]: Abstraction has 153 states and 388 transitions. [2020-10-11 12:48:43,402 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:48:43,402 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 388 transitions. [2020-10-11 12:48:43,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:48:43,402 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:48:43,403 INFO L421 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:48:43,603 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151,145 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:48:43,603 INFO L429 AbstractCegarLoop]: === Iteration 153 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:48:43,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:48:43,604 INFO L82 PathProgramCache]: Analyzing trace with hash -167068428, now seen corresponding path program 119 times [2020-10-11 12:48:43,604 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:48:43,604 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283037443] [2020-10-11 12:48:43,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:48:43,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:48:43,722 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:48:43,723 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283037443] [2020-10-11 12:48:43,723 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1268946041] [2020-10-11 12:48:43,723 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 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 [2020-10-11 12:48:43,777 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-11 12:48:43,777 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:48:43,778 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:48:43,778 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:48:43,968 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:48:43,968 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:48:43,968 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:48:43,968 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050163350] [2020-10-11 12:48:43,969 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:48:43,969 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:48:43,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:48:43,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:48:43,969 INFO L87 Difference]: Start difference. First operand 153 states and 388 transitions. Second operand 17 states. [2020-10-11 12:48:44,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:48:44,360 INFO L93 Difference]: Finished difference Result 212 states and 504 transitions. [2020-10-11 12:48:44,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-11 12:48:44,361 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-11 12:48:44,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:48:44,361 INFO L225 Difference]: With dead ends: 212 [2020-10-11 12:48:44,362 INFO L226 Difference]: Without dead ends: 210 [2020-10-11 12:48:44,362 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 [2020-10-11 12:48:44,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2020-10-11 12:48:44,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 156. [2020-10-11 12:48:44,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2020-10-11 12:48:44,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 397 transitions. [2020-10-11 12:48:44,365 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 397 transitions. Word has length 14 [2020-10-11 12:48:44,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:48:44,365 INFO L481 AbstractCegarLoop]: Abstraction has 156 states and 397 transitions. [2020-10-11 12:48:44,365 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:48:44,365 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 397 transitions. [2020-10-11 12:48:44,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:48:44,366 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:48:44,366 INFO L421 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:48:44,566 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152,146 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:48:44,567 INFO L429 AbstractCegarLoop]: === Iteration 154 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:48:44,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:48:44,567 INFO L82 PathProgramCache]: Analyzing trace with hash -167067467, now seen corresponding path program 120 times [2020-10-11 12:48:44,567 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:48:44,568 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645466730] [2020-10-11 12:48:44,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:48:44,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:48:44,691 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:48:44,692 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645466730] [2020-10-11 12:48:44,692 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1547221237] [2020-10-11 12:48:44,692 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 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 [2020-10-11 12:48:44,730 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-10-11 12:48:44,730 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:48:44,731 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:48:44,731 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:48:44,920 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:48:44,920 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:48:44,920 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:48:44,920 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825915063] [2020-10-11 12:48:44,921 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:48:44,921 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:48:44,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:48:44,921 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:48:44,921 INFO L87 Difference]: Start difference. First operand 156 states and 397 transitions. Second operand 17 states. [2020-10-11 12:48:45,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:48:45,315 INFO L93 Difference]: Finished difference Result 224 states and 529 transitions. [2020-10-11 12:48:45,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-11 12:48:45,316 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-11 12:48:45,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:48:45,316 INFO L225 Difference]: With dead ends: 224 [2020-10-11 12:48:45,316 INFO L226 Difference]: Without dead ends: 222 [2020-10-11 12:48:45,317 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 [2020-10-11 12:48:45,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2020-10-11 12:48:45,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 156. [2020-10-11 12:48:45,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2020-10-11 12:48:45,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 397 transitions. [2020-10-11 12:48:45,320 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 397 transitions. Word has length 14 [2020-10-11 12:48:45,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:48:45,321 INFO L481 AbstractCegarLoop]: Abstraction has 156 states and 397 transitions. [2020-10-11 12:48:45,321 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:48:45,321 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 397 transitions. [2020-10-11 12:48:45,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:48:45,321 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:48:45,321 INFO L421 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:48:45,523 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153,147 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:48:45,523 INFO L429 AbstractCegarLoop]: === Iteration 155 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:48:45,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:48:45,524 INFO L82 PathProgramCache]: Analyzing trace with hash -167038637, now seen corresponding path program 121 times [2020-10-11 12:48:45,524 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:48:45,524 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267991145] [2020-10-11 12:48:45,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:48:45,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:48:45,636 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:48:45,637 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267991145] [2020-10-11 12:48:45,637 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [715719618] [2020-10-11 12:48:45,637 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 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 [2020-10-11 12:48:45,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:48:45,676 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:48:45,677 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:48:45,861 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:48:45,861 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:48:45,861 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:48:45,861 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893466028] [2020-10-11 12:48:45,862 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:48:45,862 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:48:45,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:48:45,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=189, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:48:45,863 INFO L87 Difference]: Start difference. First operand 156 states and 397 transitions. Second operand 17 states. [2020-10-11 12:48:46,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:48:46,210 INFO L93 Difference]: Finished difference Result 218 states and 519 transitions. [2020-10-11 12:48:46,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-11 12:48:46,211 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-11 12:48:46,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:48:46,211 INFO L225 Difference]: With dead ends: 218 [2020-10-11 12:48:46,212 INFO L226 Difference]: Without dead ends: 216 [2020-10-11 12:48:46,212 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=200, Invalid=400, Unknown=0, NotChecked=0, Total=600 [2020-10-11 12:48:46,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2020-10-11 12:48:46,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 156. [2020-10-11 12:48:46,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2020-10-11 12:48:46,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 397 transitions. [2020-10-11 12:48:46,215 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 397 transitions. Word has length 14 [2020-10-11 12:48:46,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:48:46,215 INFO L481 AbstractCegarLoop]: Abstraction has 156 states and 397 transitions. [2020-10-11 12:48:46,215 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:48:46,215 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 397 transitions. [2020-10-11 12:48:46,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:48:46,215 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:48:46,215 INFO L421 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:48:46,416 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154,148 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:48:46,416 INFO L429 AbstractCegarLoop]: === Iteration 156 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:48:46,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:48:46,419 INFO L82 PathProgramCache]: Analyzing trace with hash -166114155, now seen corresponding path program 122 times [2020-10-11 12:48:46,419 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:48:46,420 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032940084] [2020-10-11 12:48:46,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:48:46,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:48:46,546 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:48:46,546 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032940084] [2020-10-11 12:48:46,546 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1419768850] [2020-10-11 12:48:46,547 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 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 [2020-10-11 12:48:46,585 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-11 12:48:46,585 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:48:46,586 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:48:46,587 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:48:46,765 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:48:46,766 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:48:46,766 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:48:46,766 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633388407] [2020-10-11 12:48:46,766 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:48:46,766 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:48:46,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:48:46,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:48:46,767 INFO L87 Difference]: Start difference. First operand 156 states and 397 transitions. Second operand 17 states. [2020-10-11 12:48:47,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:48:47,061 INFO L93 Difference]: Finished difference Result 206 states and 492 transitions. [2020-10-11 12:48:47,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-11 12:48:47,061 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-11 12:48:47,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:48:47,062 INFO L225 Difference]: With dead ends: 206 [2020-10-11 12:48:47,062 INFO L226 Difference]: Without dead ends: 204 [2020-10-11 12:48:47,062 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 [2020-10-11 12:48:47,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2020-10-11 12:48:47,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 154. [2020-10-11 12:48:47,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2020-10-11 12:48:47,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 389 transitions. [2020-10-11 12:48:47,064 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 389 transitions. Word has length 14 [2020-10-11 12:48:47,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:48:47,065 INFO L481 AbstractCegarLoop]: Abstraction has 154 states and 389 transitions. [2020-10-11 12:48:47,065 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:48:47,065 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 389 transitions. [2020-10-11 12:48:47,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:48:47,065 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:48:47,065 INFO L421 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:48:47,266 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 149 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable155 [2020-10-11 12:48:47,266 INFO L429 AbstractCegarLoop]: === Iteration 157 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:48:47,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:48:47,267 INFO L82 PathProgramCache]: Analyzing trace with hash 691806102, now seen corresponding path program 123 times [2020-10-11 12:48:47,267 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:48:47,267 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595264084] [2020-10-11 12:48:47,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:48:47,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:48:47,391 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:48:47,391 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595264084] [2020-10-11 12:48:47,391 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1767146425] [2020-10-11 12:48:47,391 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 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 [2020-10-11 12:48:47,432 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-10-11 12:48:47,432 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:48:47,433 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:48:47,434 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:48:47,607 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:48:47,607 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:48:47,608 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:48:47,608 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292062086] [2020-10-11 12:48:47,608 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:48:47,608 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:48:47,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:48:47,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:48:47,609 INFO L87 Difference]: Start difference. First operand 154 states and 389 transitions. Second operand 17 states. [2020-10-11 12:48:47,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:48:47,906 INFO L93 Difference]: Finished difference Result 207 states and 495 transitions. [2020-10-11 12:48:47,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-11 12:48:47,906 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-11 12:48:47,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:48:47,907 INFO L225 Difference]: With dead ends: 207 [2020-10-11 12:48:47,907 INFO L226 Difference]: Without dead ends: 205 [2020-10-11 12:48:47,907 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 [2020-10-11 12:48:47,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2020-10-11 12:48:47,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 159. [2020-10-11 12:48:47,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2020-10-11 12:48:47,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 403 transitions. [2020-10-11 12:48:47,912 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 403 transitions. Word has length 14 [2020-10-11 12:48:47,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:48:47,912 INFO L481 AbstractCegarLoop]: Abstraction has 159 states and 403 transitions. [2020-10-11 12:48:47,912 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:48:47,912 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 403 transitions. [2020-10-11 12:48:47,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:48:47,913 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:48:47,913 INFO L421 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:48:48,118 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 150 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable156 [2020-10-11 12:48:48,119 INFO L429 AbstractCegarLoop]: === Iteration 158 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:48:48,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:48:48,119 INFO L82 PathProgramCache]: Analyzing trace with hash 691807063, now seen corresponding path program 124 times [2020-10-11 12:48:48,119 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:48:48,120 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855490173] [2020-10-11 12:48:48,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:48:48,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:48:48,239 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:48:48,240 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855490173] [2020-10-11 12:48:48,240 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1129217523] [2020-10-11 12:48:48,240 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 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 [2020-10-11 12:48:48,283 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-11 12:48:48,283 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:48:48,284 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:48:48,285 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:48:48,486 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:48:48,486 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:48:48,486 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:48:48,487 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306534073] [2020-10-11 12:48:48,487 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:48:48,487 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:48:48,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:48:48,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:48:48,488 INFO L87 Difference]: Start difference. First operand 159 states and 403 transitions. Second operand 17 states. [2020-10-11 12:48:48,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:48:48,841 INFO L93 Difference]: Finished difference Result 217 states and 516 transitions. [2020-10-11 12:48:48,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-11 12:48:48,842 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-11 12:48:48,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:48:48,842 INFO L225 Difference]: With dead ends: 217 [2020-10-11 12:48:48,842 INFO L226 Difference]: Without dead ends: 215 [2020-10-11 12:48:48,842 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=176, Invalid=376, Unknown=0, NotChecked=0, Total=552 [2020-10-11 12:48:48,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2020-10-11 12:48:48,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 158. [2020-10-11 12:48:48,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2020-10-11 12:48:48,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 400 transitions. [2020-10-11 12:48:48,845 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 400 transitions. Word has length 14 [2020-10-11 12:48:48,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:48:48,845 INFO L481 AbstractCegarLoop]: Abstraction has 158 states and 400 transitions. [2020-10-11 12:48:48,845 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:48:48,845 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 400 transitions. [2020-10-11 12:48:48,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:48:48,845 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:48:48,845 INFO L421 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:48:49,046 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 151 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable157 [2020-10-11 12:48:49,046 INFO L429 AbstractCegarLoop]: === Iteration 159 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:48:49,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:48:49,047 INFO L82 PathProgramCache]: Analyzing trace with hash 691835893, now seen corresponding path program 125 times [2020-10-11 12:48:49,047 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:48:49,047 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784760028] [2020-10-11 12:48:49,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:48:49,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:48:49,170 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:48:49,170 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784760028] [2020-10-11 12:48:49,171 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1888938268] [2020-10-11 12:48:49,171 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 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 [2020-10-11 12:48:49,210 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-11 12:48:49,211 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:48:49,211 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:48:49,212 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:48:50,305 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:48:50,305 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:48:50,305 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:48:50,305 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398446498] [2020-10-11 12:48:50,305 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:48:50,305 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:48:50,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:48:50,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:48:50,306 INFO L87 Difference]: Start difference. First operand 158 states and 400 transitions. Second operand 17 states. [2020-10-11 12:48:50,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:48:50,730 INFO L93 Difference]: Finished difference Result 223 states and 528 transitions. [2020-10-11 12:48:50,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-11 12:48:50,731 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-11 12:48:50,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:48:50,731 INFO L225 Difference]: With dead ends: 223 [2020-10-11 12:48:50,732 INFO L226 Difference]: Without dead ends: 221 [2020-10-11 12:48:50,732 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=197, Invalid=403, Unknown=0, NotChecked=0, Total=600 [2020-10-11 12:48:50,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2020-10-11 12:48:50,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 162. [2020-10-11 12:48:50,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-10-11 12:48:50,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 411 transitions. [2020-10-11 12:48:50,736 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 411 transitions. Word has length 14 [2020-10-11 12:48:50,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:48:50,736 INFO L481 AbstractCegarLoop]: Abstraction has 162 states and 411 transitions. [2020-10-11 12:48:50,736 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:48:50,736 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 411 transitions. [2020-10-11 12:48:50,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:48:50,737 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:48:50,737 INFO L421 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:48:50,937 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 152 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable158 [2020-10-11 12:48:50,938 INFO L429 AbstractCegarLoop]: === Iteration 160 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:48:50,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:48:50,938 INFO L82 PathProgramCache]: Analyzing trace with hash 692730584, now seen corresponding path program 126 times [2020-10-11 12:48:50,938 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:48:50,938 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856541451] [2020-10-11 12:48:50,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:48:50,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:48:51,065 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:48:51,066 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856541451] [2020-10-11 12:48:51,066 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [572190473] [2020-10-11 12:48:51,066 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 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 [2020-10-11 12:48:51,105 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-11 12:48:51,105 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:48:51,106 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:48:51,107 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:48:51,266 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:48:51,267 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:48:51,267 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:48:51,267 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040750117] [2020-10-11 12:48:51,267 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:48:51,267 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:48:51,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:48:51,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=189, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:48:51,268 INFO L87 Difference]: Start difference. First operand 162 states and 411 transitions. Second operand 17 states. [2020-10-11 12:48:51,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:48:51,615 INFO L93 Difference]: Finished difference Result 225 states and 531 transitions. [2020-10-11 12:48:51,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-11 12:48:51,616 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-11 12:48:51,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:48:51,617 INFO L225 Difference]: With dead ends: 225 [2020-10-11 12:48:51,617 INFO L226 Difference]: Without dead ends: 223 [2020-10-11 12:48:51,617 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=200, Invalid=400, Unknown=0, NotChecked=0, Total=600 [2020-10-11 12:48:51,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2020-10-11 12:48:51,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 161. [2020-10-11 12:48:51,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2020-10-11 12:48:51,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 407 transitions. [2020-10-11 12:48:51,626 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 407 transitions. Word has length 14 [2020-10-11 12:48:51,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:48:51,627 INFO L481 AbstractCegarLoop]: Abstraction has 161 states and 407 transitions. [2020-10-11 12:48:51,627 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:48:51,627 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 407 transitions. [2020-10-11 12:48:51,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:48:51,627 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:48:51,627 INFO L421 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:48:51,827 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159,153 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:48:51,828 INFO L429 AbstractCegarLoop]: === Iteration 161 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:48:51,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:48:51,828 INFO L82 PathProgramCache]: Analyzing trace with hash 720435253, now seen corresponding path program 127 times [2020-10-11 12:48:51,829 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:48:51,829 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237051226] [2020-10-11 12:48:51,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:48:51,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:48:51,976 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:48:51,977 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237051226] [2020-10-11 12:48:51,977 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1753934355] [2020-10-11 12:48:51,977 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 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 [2020-10-11 12:48:52,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:48:52,016 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:48:52,016 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:48:52,225 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:48:52,225 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:48:52,225 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:48:52,225 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388825992] [2020-10-11 12:48:52,226 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:48:52,226 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:48:52,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:48:52,226 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:48:52,226 INFO L87 Difference]: Start difference. First operand 161 states and 407 transitions. Second operand 17 states. [2020-10-11 12:48:52,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:48:52,564 INFO L93 Difference]: Finished difference Result 214 states and 509 transitions. [2020-10-11 12:48:52,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-11 12:48:52,565 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-11 12:48:52,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:48:52,565 INFO L225 Difference]: With dead ends: 214 [2020-10-11 12:48:52,566 INFO L226 Difference]: Without dead ends: 212 [2020-10-11 12:48:52,566 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 [2020-10-11 12:48:52,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2020-10-11 12:48:52,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 160. [2020-10-11 12:48:52,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2020-10-11 12:48:52,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 404 transitions. [2020-10-11 12:48:52,569 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 404 transitions. Word has length 14 [2020-10-11 12:48:52,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:48:52,570 INFO L481 AbstractCegarLoop]: Abstraction has 160 states and 404 transitions. [2020-10-11 12:48:52,570 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:48:52,570 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 404 transitions. [2020-10-11 12:48:52,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:48:52,570 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:48:52,570 INFO L421 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:48:52,774 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160,154 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:48:52,775 INFO L429 AbstractCegarLoop]: === Iteration 162 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:48:52,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:48:52,775 INFO L82 PathProgramCache]: Analyzing trace with hash 721388565, now seen corresponding path program 128 times [2020-10-11 12:48:52,775 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:48:52,776 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375333231] [2020-10-11 12:48:52,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:48:52,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:48:52,936 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:48:52,936 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375333231] [2020-10-11 12:48:52,937 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1233271975] [2020-10-11 12:48:52,937 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 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 [2020-10-11 12:48:52,974 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-11 12:48:52,974 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:48:52,975 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:48:52,976 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:48:53,161 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:48:53,161 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:48:53,162 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:48:53,162 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531818877] [2020-10-11 12:48:53,162 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:48:53,162 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:48:53,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:48:53,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=189, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:48:53,163 INFO L87 Difference]: Start difference. First operand 160 states and 404 transitions. Second operand 17 states. [2020-10-11 12:48:53,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:48:53,404 INFO L93 Difference]: Finished difference Result 203 states and 486 transitions. [2020-10-11 12:48:53,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-11 12:48:53,405 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-11 12:48:53,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:48:53,405 INFO L225 Difference]: With dead ends: 203 [2020-10-11 12:48:53,405 INFO L226 Difference]: Without dead ends: 201 [2020-10-11 12:48:53,405 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 [2020-10-11 12:48:53,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2020-10-11 12:48:53,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 158. [2020-10-11 12:48:53,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2020-10-11 12:48:53,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 397 transitions. [2020-10-11 12:48:53,408 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 397 transitions. Word has length 14 [2020-10-11 12:48:53,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:48:53,408 INFO L481 AbstractCegarLoop]: Abstraction has 158 states and 397 transitions. [2020-10-11 12:48:53,408 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:48:53,408 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 397 transitions. [2020-10-11 12:48:53,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:48:53,408 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:48:53,408 INFO L421 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:48:53,609 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 155 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable161 [2020-10-11 12:48:53,609 INFO L429 AbstractCegarLoop]: === Iteration 163 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:48:53,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:48:53,610 INFO L82 PathProgramCache]: Analyzing trace with hash -1998481017, now seen corresponding path program 129 times [2020-10-11 12:48:53,610 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:48:53,610 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433666650] [2020-10-11 12:48:53,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:48:53,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:48:53,806 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:48:53,806 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433666650] [2020-10-11 12:48:53,806 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1194544169] [2020-10-11 12:48:53,806 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 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 [2020-10-11 12:48:53,845 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-11 12:48:53,845 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:48:53,846 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:48:53,846 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:48:54,046 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:48:54,046 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:48:54,046 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:48:54,046 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288353950] [2020-10-11 12:48:54,047 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:48:54,047 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:48:54,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:48:54,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:48:54,047 INFO L87 Difference]: Start difference. First operand 158 states and 397 transitions. Second operand 17 states. [2020-10-11 12:48:54,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:48:54,119 INFO L93 Difference]: Finished difference Result 212 states and 504 transitions. [2020-10-11 12:48:54,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-11 12:48:54,120 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-11 12:48:54,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:48:54,120 INFO L225 Difference]: With dead ends: 212 [2020-10-11 12:48:54,120 INFO L226 Difference]: Without dead ends: 210 [2020-10-11 12:48:54,121 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 [2020-10-11 12:48:54,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2020-10-11 12:48:54,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 166. [2020-10-11 12:48:54,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states. [2020-10-11 12:48:54,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 421 transitions. [2020-10-11 12:48:54,123 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 421 transitions. Word has length 14 [2020-10-11 12:48:54,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:48:54,123 INFO L481 AbstractCegarLoop]: Abstraction has 166 states and 421 transitions. [2020-10-11 12:48:54,123 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:48:54,123 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 421 transitions. [2020-10-11 12:48:54,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:48:54,124 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:48:54,124 INFO L421 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:48:54,324 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162,156 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:48:54,324 INFO L429 AbstractCegarLoop]: === Iteration 164 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:48:54,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:48:54,325 INFO L82 PathProgramCache]: Analyzing trace with hash -1998480056, now seen corresponding path program 130 times [2020-10-11 12:48:54,325 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:48:54,326 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745437356] [2020-10-11 12:48:54,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:48:54,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:48:54,524 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:48:54,524 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745437356] [2020-10-11 12:48:54,525 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [322922988] [2020-10-11 12:48:54,525 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 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 [2020-10-11 12:48:54,567 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-11 12:48:54,568 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:48:54,569 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:48:54,569 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:48:54,775 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:48:54,775 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:48:54,775 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:48:54,776 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22694368] [2020-10-11 12:48:54,776 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:48:54,776 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:48:54,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:48:54,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:48:54,777 INFO L87 Difference]: Start difference. First operand 166 states and 421 transitions. Second operand 17 states. [2020-10-11 12:48:55,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:48:55,051 INFO L93 Difference]: Finished difference Result 217 states and 513 transitions. [2020-10-11 12:48:55,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-11 12:48:55,053 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-11 12:48:55,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:48:55,053 INFO L225 Difference]: With dead ends: 217 [2020-10-11 12:48:55,053 INFO L226 Difference]: Without dead ends: 215 [2020-10-11 12:48:55,054 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=159, Invalid=347, Unknown=0, NotChecked=0, Total=506 [2020-10-11 12:48:55,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2020-10-11 12:48:55,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 164. [2020-10-11 12:48:55,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2020-10-11 12:48:55,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 415 transitions. [2020-10-11 12:48:55,058 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 415 transitions. Word has length 14 [2020-10-11 12:48:55,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:48:55,058 INFO L481 AbstractCegarLoop]: Abstraction has 164 states and 415 transitions. [2020-10-11 12:48:55,059 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:48:55,059 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 415 transitions. [2020-10-11 12:48:55,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:48:55,059 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:48:55,059 INFO L421 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:48:55,265 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163,157 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:48:55,266 INFO L429 AbstractCegarLoop]: === Iteration 165 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:48:55,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:48:55,266 INFO L82 PathProgramCache]: Analyzing trace with hash -1998451226, now seen corresponding path program 131 times [2020-10-11 12:48:55,266 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:48:55,267 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004993489] [2020-10-11 12:48:55,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:48:55,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:48:55,422 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:48:55,422 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004993489] [2020-10-11 12:48:55,422 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [375487752] [2020-10-11 12:48:55,422 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 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 [2020-10-11 12:48:55,463 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-11 12:48:55,463 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:48:55,464 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:48:55,465 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:48:55,720 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:48:55,720 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:48:55,720 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:48:55,720 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990055384] [2020-10-11 12:48:55,720 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:48:55,720 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:48:55,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:48:55,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=196, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:48:55,721 INFO L87 Difference]: Start difference. First operand 164 states and 415 transitions. Second operand 17 states. [2020-10-11 12:48:56,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:48:56,075 INFO L93 Difference]: Finished difference Result 227 states and 533 transitions. [2020-10-11 12:48:56,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-11 12:48:56,076 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-11 12:48:56,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:48:56,077 INFO L225 Difference]: With dead ends: 227 [2020-10-11 12:48:56,077 INFO L226 Difference]: Without dead ends: 225 [2020-10-11 12:48:56,078 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 [2020-10-11 12:48:56,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2020-10-11 12:48:56,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 162. [2020-10-11 12:48:56,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-10-11 12:48:56,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 409 transitions. [2020-10-11 12:48:56,081 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 409 transitions. Word has length 14 [2020-10-11 12:48:56,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:48:56,081 INFO L481 AbstractCegarLoop]: Abstraction has 162 states and 409 transitions. [2020-10-11 12:48:56,081 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:48:56,081 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 409 transitions. [2020-10-11 12:48:56,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:48:56,081 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:48:56,082 INFO L421 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:48:56,282 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164,158 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:48:56,282 INFO L429 AbstractCegarLoop]: === Iteration 166 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:48:56,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:48:56,283 INFO L82 PathProgramCache]: Analyzing trace with hash -1997557496, now seen corresponding path program 132 times [2020-10-11 12:48:56,283 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:48:56,283 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291053737] [2020-10-11 12:48:56,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:48:56,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:48:56,415 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:48:56,416 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291053737] [2020-10-11 12:48:56,416 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1927930260] [2020-10-11 12:48:56,416 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 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 [2020-10-11 12:48:56,457 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-11 12:48:56,457 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:48:56,458 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:48:56,459 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:48:56,692 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:48:56,692 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:48:56,692 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:48:56,692 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600945688] [2020-10-11 12:48:56,693 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:48:56,693 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:48:56,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:48:56,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=198, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:48:56,693 INFO L87 Difference]: Start difference. First operand 162 states and 409 transitions. Second operand 17 states. [2020-10-11 12:48:57,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:48:57,169 INFO L93 Difference]: Finished difference Result 227 states and 533 transitions. [2020-10-11 12:48:57,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-11 12:48:57,170 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-11 12:48:57,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:48:57,171 INFO L225 Difference]: With dead ends: 227 [2020-10-11 12:48:57,171 INFO L226 Difference]: Without dead ends: 225 [2020-10-11 12:48:57,171 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=208, Invalid=442, Unknown=0, NotChecked=0, Total=650 [2020-10-11 12:48:57,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2020-10-11 12:48:57,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 164. [2020-10-11 12:48:57,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2020-10-11 12:48:57,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 415 transitions. [2020-10-11 12:48:57,174 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 415 transitions. Word has length 14 [2020-10-11 12:48:57,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:48:57,174 INFO L481 AbstractCegarLoop]: Abstraction has 164 states and 415 transitions. [2020-10-11 12:48:57,174 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:48:57,174 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 415 transitions. [2020-10-11 12:48:57,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:48:57,174 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:48:57,176 INFO L421 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:48:57,377 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 159 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable165 [2020-10-11 12:48:57,377 INFO L429 AbstractCegarLoop]: === Iteration 167 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:48:57,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:48:57,379 INFO L82 PathProgramCache]: Analyzing trace with hash -1997556535, now seen corresponding path program 133 times [2020-10-11 12:48:57,380 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:48:57,380 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840341089] [2020-10-11 12:48:57,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:48:57,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:48:57,536 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:48:57,536 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840341089] [2020-10-11 12:48:57,537 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1531583780] [2020-10-11 12:48:57,537 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 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 [2020-10-11 12:48:57,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:48:57,576 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:48:57,577 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:49:00,643 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:49:00,643 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:49:00,643 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:49:00,643 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299529626] [2020-10-11 12:49:00,643 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:49:00,644 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:49:00,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:49:00,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=200, Unknown=1, NotChecked=0, Total=272 [2020-10-11 12:49:00,644 INFO L87 Difference]: Start difference. First operand 164 states and 415 transitions. Second operand 17 states. [2020-10-11 12:49:04,893 WARN L193 SmtUtils]: Spent 4.10 s on a formula simplification. DAG size of input: 41 DAG size of output: 37 [2020-10-11 12:49:05,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:49:05,249 INFO L93 Difference]: Finished difference Result 237 states and 553 transitions. [2020-10-11 12:49:05,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-11 12:49:05,250 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-11 12:49:05,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:49:05,250 INFO L225 Difference]: With dead ends: 237 [2020-10-11 12:49:05,250 INFO L226 Difference]: Without dead ends: 235 [2020-10-11 12:49:05,251 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 7.6s TimeCoverageRelationStatistics Valid=205, Invalid=444, Unknown=1, NotChecked=0, Total=650 [2020-10-11 12:49:05,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2020-10-11 12:49:05,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 163. [2020-10-11 12:49:05,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-10-11 12:49:05,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 412 transitions. [2020-10-11 12:49:05,254 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 412 transitions. Word has length 14 [2020-10-11 12:49:05,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:49:05,254 INFO L481 AbstractCegarLoop]: Abstraction has 163 states and 412 transitions. [2020-10-11 12:49:05,255 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:49:05,255 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 412 transitions. [2020-10-11 12:49:05,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:49:05,255 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:49:05,255 INFO L421 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:49:05,456 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 160 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable166 [2020-10-11 12:49:05,456 INFO L429 AbstractCegarLoop]: === Iteration 168 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:49:05,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:49:05,456 INFO L82 PathProgramCache]: Analyzing trace with hash -1997527705, now seen corresponding path program 134 times [2020-10-11 12:49:05,456 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:49:05,456 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816844422] [2020-10-11 12:49:05,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:49:05,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:49:05,608 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:49:05,608 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816844422] [2020-10-11 12:49:05,608 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1734507764] [2020-10-11 12:49:05,609 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 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 [2020-10-11 12:49:05,670 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-11 12:49:05,670 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:49:05,672 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:49:05,673 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:49:06,043 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:49:06,044 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:49:06,044 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:49:06,044 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963968612] [2020-10-11 12:49:06,044 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:49:06,044 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:49:06,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:49:06,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=201, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:49:06,045 INFO L87 Difference]: Start difference. First operand 163 states and 412 transitions. Second operand 17 states. [2020-10-11 12:49:06,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:49:06,551 INFO L93 Difference]: Finished difference Result 229 states and 539 transitions. [2020-10-11 12:49:06,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-11 12:49:06,551 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-11 12:49:06,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:49:06,552 INFO L225 Difference]: With dead ends: 229 [2020-10-11 12:49:06,552 INFO L226 Difference]: Without dead ends: 227 [2020-10-11 12:49:06,552 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=210, Invalid=440, Unknown=0, NotChecked=0, Total=650 [2020-10-11 12:49:06,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2020-10-11 12:49:06,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 160. [2020-10-11 12:49:06,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2020-10-11 12:49:06,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 403 transitions. [2020-10-11 12:49:06,555 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 403 transitions. Word has length 14 [2020-10-11 12:49:06,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:49:06,555 INFO L481 AbstractCegarLoop]: Abstraction has 160 states and 403 transitions. [2020-10-11 12:49:06,555 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:49:06,555 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 403 transitions. [2020-10-11 12:49:06,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:49:06,555 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:49:06,556 INFO L421 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:49:06,756 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 161 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable167 [2020-10-11 12:49:06,757 INFO L429 AbstractCegarLoop]: === Iteration 169 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:49:06,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:49:06,757 INFO L82 PathProgramCache]: Analyzing trace with hash -1969851866, now seen corresponding path program 135 times [2020-10-11 12:49:06,757 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:49:06,758 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181833562] [2020-10-11 12:49:06,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:49:06,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:49:06,875 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:49:06,875 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181833562] [2020-10-11 12:49:06,876 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2036141731] [2020-10-11 12:49:06,876 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 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 [2020-10-11 12:49:06,915 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-11 12:49:06,915 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:49:06,916 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:49:06,917 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:49:07,124 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:49:07,124 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:49:07,124 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:49:07,125 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467001974] [2020-10-11 12:49:07,125 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:49:07,125 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:49:07,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:49:07,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:49:07,125 INFO L87 Difference]: Start difference. First operand 160 states and 403 transitions. Second operand 17 states. [2020-10-11 12:49:07,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:49:07,649 INFO L93 Difference]: Finished difference Result 225 states and 529 transitions. [2020-10-11 12:49:07,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-11 12:49:07,649 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-11 12:49:07,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:49:07,650 INFO L225 Difference]: With dead ends: 225 [2020-10-11 12:49:07,650 INFO L226 Difference]: Without dead ends: 223 [2020-10-11 12:49:07,651 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=250, Invalid=562, Unknown=0, NotChecked=0, Total=812 [2020-10-11 12:49:07,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2020-10-11 12:49:07,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 163. [2020-10-11 12:49:07,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-10-11 12:49:07,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 412 transitions. [2020-10-11 12:49:07,653 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 412 transitions. Word has length 14 [2020-10-11 12:49:07,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:49:07,654 INFO L481 AbstractCegarLoop]: Abstraction has 163 states and 412 transitions. [2020-10-11 12:49:07,654 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:49:07,654 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 412 transitions. [2020-10-11 12:49:07,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:49:07,654 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:49:07,654 INFO L421 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:49:07,855 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 162 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable168 [2020-10-11 12:49:07,855 INFO L429 AbstractCegarLoop]: === Iteration 170 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:49:07,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:49:07,855 INFO L82 PathProgramCache]: Analyzing trace with hash -1969850905, now seen corresponding path program 136 times [2020-10-11 12:49:07,856 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:49:07,856 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952126235] [2020-10-11 12:49:07,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:49:07,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:49:07,980 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:49:07,980 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952126235] [2020-10-11 12:49:07,980 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1064616043] [2020-10-11 12:49:07,980 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 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 [2020-10-11 12:49:08,021 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-11 12:49:08,021 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:49:08,022 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:49:08,023 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:49:08,252 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:49:08,253 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:49:08,253 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:49:08,253 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902312247] [2020-10-11 12:49:08,254 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:49:08,254 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:49:08,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:49:08,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:49:08,255 INFO L87 Difference]: Start difference. First operand 163 states and 412 transitions. Second operand 17 states. [2020-10-11 12:49:09,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:49:09,029 INFO L93 Difference]: Finished difference Result 239 states and 557 transitions. [2020-10-11 12:49:09,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-11 12:49:09,031 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-11 12:49:09,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:49:09,032 INFO L225 Difference]: With dead ends: 239 [2020-10-11 12:49:09,032 INFO L226 Difference]: Without dead ends: 237 [2020-10-11 12:49:09,032 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 201 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=248, Invalid=564, Unknown=0, NotChecked=0, Total=812 [2020-10-11 12:49:09,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2020-10-11 12:49:09,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 163. [2020-10-11 12:49:09,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-10-11 12:49:09,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 412 transitions. [2020-10-11 12:49:09,038 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 412 transitions. Word has length 14 [2020-10-11 12:49:09,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:49:09,038 INFO L481 AbstractCegarLoop]: Abstraction has 163 states and 412 transitions. [2020-10-11 12:49:09,038 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:49:09,039 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 412 transitions. [2020-10-11 12:49:09,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:49:09,039 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:49:09,040 INFO L421 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:49:09,252 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 163 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable169 [2020-10-11 12:49:09,252 INFO L429 AbstractCegarLoop]: === Iteration 171 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:49:09,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:49:09,253 INFO L82 PathProgramCache]: Analyzing trace with hash -1969822075, now seen corresponding path program 137 times [2020-10-11 12:49:09,253 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:49:09,253 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106460245] [2020-10-11 12:49:09,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:49:09,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:49:09,376 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:49:09,377 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106460245] [2020-10-11 12:49:09,377 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1483680336] [2020-10-11 12:49:09,377 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 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 [2020-10-11 12:49:09,417 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-11 12:49:09,418 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:49:09,418 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:49:09,419 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:49:09,602 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:49:09,602 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:49:09,602 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:49:09,602 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099490263] [2020-10-11 12:49:09,603 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:49:09,603 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:49:09,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:49:09,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=203, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:49:09,603 INFO L87 Difference]: Start difference. First operand 163 states and 412 transitions. Second operand 17 states. [2020-10-11 12:49:10,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:49:10,025 INFO L93 Difference]: Finished difference Result 234 states and 550 transitions. [2020-10-11 12:49:10,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-11 12:49:10,026 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-11 12:49:10,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:49:10,027 INFO L225 Difference]: With dead ends: 234 [2020-10-11 12:49:10,027 INFO L226 Difference]: Without dead ends: 232 [2020-10-11 12:49:10,027 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=222, Invalid=480, Unknown=0, NotChecked=0, Total=702 [2020-10-11 12:49:10,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2020-10-11 12:49:10,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 163. [2020-10-11 12:49:10,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-10-11 12:49:10,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 412 transitions. [2020-10-11 12:49:10,031 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 412 transitions. Word has length 14 [2020-10-11 12:49:10,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:49:10,031 INFO L481 AbstractCegarLoop]: Abstraction has 163 states and 412 transitions. [2020-10-11 12:49:10,031 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:49:10,031 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 412 transitions. [2020-10-11 12:49:10,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:49:10,032 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:49:10,032 INFO L421 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:49:10,240 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 164 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable170 [2020-10-11 12:49:10,241 INFO L429 AbstractCegarLoop]: === Iteration 172 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:49:10,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:49:10,241 INFO L82 PathProgramCache]: Analyzing trace with hash -1968897593, now seen corresponding path program 138 times [2020-10-11 12:49:10,241 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:49:10,242 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250905141] [2020-10-11 12:49:10,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:49:10,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:49:10,368 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:49:10,369 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250905141] [2020-10-11 12:49:10,369 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [312834407] [2020-10-11 12:49:10,369 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 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 [2020-10-11 12:49:10,409 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-11 12:49:10,409 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:49:10,410 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:49:10,410 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:49:10,600 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:49:10,600 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:49:10,601 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:49:10,601 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631619757] [2020-10-11 12:49:10,601 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:49:10,601 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:49:10,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:49:10,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:49:10,602 INFO L87 Difference]: Start difference. First operand 163 states and 412 transitions. Second operand 17 states. [2020-10-11 12:49:10,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:49:10,967 INFO L93 Difference]: Finished difference Result 218 states and 515 transitions. [2020-10-11 12:49:10,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-11 12:49:10,968 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-11 12:49:10,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:49:10,969 INFO L225 Difference]: With dead ends: 218 [2020-10-11 12:49:10,969 INFO L226 Difference]: Without dead ends: 216 [2020-10-11 12:49:10,969 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 [2020-10-11 12:49:10,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2020-10-11 12:49:10,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 159. [2020-10-11 12:49:10,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2020-10-11 12:49:10,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 399 transitions. [2020-10-11 12:49:10,972 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 399 transitions. Word has length 14 [2020-10-11 12:49:10,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:49:10,972 INFO L481 AbstractCegarLoop]: Abstraction has 159 states and 399 transitions. [2020-10-11 12:49:10,972 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:49:10,972 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 399 transitions. [2020-10-11 12:49:10,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:49:10,972 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:49:10,973 INFO L421 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:49:11,173 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable171,165 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:49:11,173 INFO L429 AbstractCegarLoop]: === Iteration 173 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:49:11,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:49:11,174 INFO L82 PathProgramCache]: Analyzing trace with hash 575763989, now seen corresponding path program 139 times [2020-10-11 12:49:11,174 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:49:11,174 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639410559] [2020-10-11 12:49:11,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:49:11,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:49:11,346 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:49:11,347 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639410559] [2020-10-11 12:49:11,347 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [939120668] [2020-10-11 12:49:11,347 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 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 [2020-10-11 12:49:11,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:49:11,388 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:49:11,389 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:49:11,594 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:49:11,595 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:49:11,595 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:49:11,595 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125428758] [2020-10-11 12:49:11,595 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:49:11,595 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:49:11,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:49:11,596 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:49:11,596 INFO L87 Difference]: Start difference. First operand 159 states and 399 transitions. Second operand 17 states. [2020-10-11 12:49:11,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:49:11,714 INFO L93 Difference]: Finished difference Result 208 states and 495 transitions. [2020-10-11 12:49:11,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-11 12:49:11,714 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-11 12:49:11,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:49:11,715 INFO L225 Difference]: With dead ends: 208 [2020-10-11 12:49:11,715 INFO L226 Difference]: Without dead ends: 206 [2020-10-11 12:49:11,715 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 [2020-10-11 12:49:11,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2020-10-11 12:49:11,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 165. [2020-10-11 12:49:11,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2020-10-11 12:49:11,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 417 transitions. [2020-10-11 12:49:11,718 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 417 transitions. Word has length 14 [2020-10-11 12:49:11,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:49:11,718 INFO L481 AbstractCegarLoop]: Abstraction has 165 states and 417 transitions. [2020-10-11 12:49:11,718 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:49:11,719 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 417 transitions. [2020-10-11 12:49:11,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:49:11,719 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:49:11,719 INFO L421 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:49:11,919 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable172,166 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:49:11,920 INFO L429 AbstractCegarLoop]: === Iteration 174 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:49:11,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:49:11,920 INFO L82 PathProgramCache]: Analyzing trace with hash 575764950, now seen corresponding path program 140 times [2020-10-11 12:49:11,921 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:49:11,921 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082595864] [2020-10-11 12:49:11,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:49:11,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:49:12,081 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:49:12,082 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082595864] [2020-10-11 12:49:12,082 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1339457932] [2020-10-11 12:49:12,082 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 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 [2020-10-11 12:49:12,118 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-11 12:49:12,118 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:49:12,119 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:49:12,119 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:49:12,286 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:49:12,287 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:49:12,287 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:49:12,287 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468743199] [2020-10-11 12:49:12,287 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:49:12,287 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:49:12,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:49:12,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:49:12,287 INFO L87 Difference]: Start difference. First operand 165 states and 417 transitions. Second operand 17 states. [2020-10-11 12:49:12,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:49:12,594 INFO L93 Difference]: Finished difference Result 229 states and 536 transitions. [2020-10-11 12:49:12,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-11 12:49:12,595 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-11 12:49:12,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:49:12,596 INFO L225 Difference]: With dead ends: 229 [2020-10-11 12:49:12,596 INFO L226 Difference]: Without dead ends: 227 [2020-10-11 12:49:12,596 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 [2020-10-11 12:49:12,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2020-10-11 12:49:12,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 163. [2020-10-11 12:49:12,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-10-11 12:49:12,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 411 transitions. [2020-10-11 12:49:12,600 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 411 transitions. Word has length 14 [2020-10-11 12:49:12,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:49:12,600 INFO L481 AbstractCegarLoop]: Abstraction has 163 states and 411 transitions. [2020-10-11 12:49:12,600 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:49:12,601 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 411 transitions. [2020-10-11 12:49:12,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:49:12,601 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:49:12,601 INFO L421 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:49:12,803 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173,167 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:49:12,804 INFO L429 AbstractCegarLoop]: === Iteration 175 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:49:12,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:49:12,804 INFO L82 PathProgramCache]: Analyzing trace with hash 575793780, now seen corresponding path program 141 times [2020-10-11 12:49:12,804 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:49:12,805 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471050849] [2020-10-11 12:49:12,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:49:12,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:49:12,945 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:49:12,946 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471050849] [2020-10-11 12:49:12,946 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1996842397] [2020-10-11 12:49:12,946 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 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 [2020-10-11 12:49:12,985 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-11 12:49:12,985 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:49:12,986 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:49:12,987 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:49:13,234 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:49:13,235 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:49:13,235 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:49:13,235 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696101640] [2020-10-11 12:49:13,235 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:49:13,235 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:49:13,235 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:49:13,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:49:13,236 INFO L87 Difference]: Start difference. First operand 163 states and 411 transitions. Second operand 17 states. [2020-10-11 12:49:13,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:49:13,618 INFO L93 Difference]: Finished difference Result 235 states and 548 transitions. [2020-10-11 12:49:13,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-11 12:49:13,619 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-11 12:49:13,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:49:13,620 INFO L225 Difference]: With dead ends: 235 [2020-10-11 12:49:13,620 INFO L226 Difference]: Without dead ends: 233 [2020-10-11 12:49:13,620 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=188, Invalid=412, Unknown=0, NotChecked=0, Total=600 [2020-10-11 12:49:13,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2020-10-11 12:49:13,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 161. [2020-10-11 12:49:13,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2020-10-11 12:49:13,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 405 transitions. [2020-10-11 12:49:13,623 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 405 transitions. Word has length 14 [2020-10-11 12:49:13,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:49:13,623 INFO L481 AbstractCegarLoop]: Abstraction has 161 states and 405 transitions. [2020-10-11 12:49:13,623 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:49:13,623 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 405 transitions. [2020-10-11 12:49:13,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:49:13,624 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:49:13,624 INFO L421 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:49:13,824 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174,168 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:49:13,825 INFO L429 AbstractCegarLoop]: === Iteration 176 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:49:13,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:49:13,825 INFO L82 PathProgramCache]: Analyzing trace with hash 576687510, now seen corresponding path program 142 times [2020-10-11 12:49:13,826 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:49:13,826 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309763615] [2020-10-11 12:49:13,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:49:13,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:49:13,956 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:49:13,956 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309763615] [2020-10-11 12:49:13,956 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1643732385] [2020-10-11 12:49:13,957 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 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 [2020-10-11 12:49:13,994 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-11 12:49:13,994 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:49:13,995 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:49:13,995 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:49:14,240 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:49:14,240 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:49:14,241 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:49:14,241 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570258864] [2020-10-11 12:49:14,241 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:49:14,241 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:49:14,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:49:14,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=207, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:49:14,242 INFO L87 Difference]: Start difference. First operand 161 states and 405 transitions. Second operand 17 states. [2020-10-11 12:49:14,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:49:14,751 INFO L93 Difference]: Finished difference Result 233 states and 544 transitions. [2020-10-11 12:49:14,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-11 12:49:14,752 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-11 12:49:14,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:49:14,752 INFO L225 Difference]: With dead ends: 233 [2020-10-11 12:49:14,752 INFO L226 Difference]: Without dead ends: 231 [2020-10-11 12:49:14,753 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=216, Invalid=486, Unknown=0, NotChecked=0, Total=702 [2020-10-11 12:49:14,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2020-10-11 12:49:14,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 163. [2020-10-11 12:49:14,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-10-11 12:49:14,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 411 transitions. [2020-10-11 12:49:14,756 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 411 transitions. Word has length 14 [2020-10-11 12:49:14,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:49:14,756 INFO L481 AbstractCegarLoop]: Abstraction has 163 states and 411 transitions. [2020-10-11 12:49:14,756 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:49:14,756 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 411 transitions. [2020-10-11 12:49:14,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:49:14,757 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:49:14,757 INFO L421 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:49:14,966 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable175,169 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:49:14,966 INFO L429 AbstractCegarLoop]: === Iteration 177 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:49:14,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:49:14,967 INFO L82 PathProgramCache]: Analyzing trace with hash 576688471, now seen corresponding path program 143 times [2020-10-11 12:49:14,967 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:49:14,967 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137237183] [2020-10-11 12:49:14,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:49:14,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:49:15,089 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:49:15,090 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137237183] [2020-10-11 12:49:15,090 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [267071224] [2020-10-11 12:49:15,090 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 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 [2020-10-11 12:49:15,127 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-11 12:49:15,128 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:49:15,129 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:49:15,129 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:49:18,852 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:49:18,853 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:49:18,853 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:49:18,853 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127162008] [2020-10-11 12:49:18,853 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:49:18,853 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:49:18,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:49:18,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=208, Unknown=1, NotChecked=0, Total=272 [2020-10-11 12:49:18,854 INFO L87 Difference]: Start difference. First operand 163 states and 411 transitions. Second operand 17 states. [2020-10-11 12:49:23,143 WARN L193 SmtUtils]: Spent 4.10 s on a formula simplification. DAG size of input: 41 DAG size of output: 37 [2020-10-11 12:49:23,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:49:23,508 INFO L93 Difference]: Finished difference Result 241 states and 560 transitions. [2020-10-11 12:49:23,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-11 12:49:23,508 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-11 12:49:23,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:49:23,509 INFO L225 Difference]: With dead ends: 241 [2020-10-11 12:49:23,509 INFO L226 Difference]: Without dead ends: 239 [2020-10-11 12:49:23,509 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 [2020-10-11 12:49:23,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2020-10-11 12:49:23,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 163. [2020-10-11 12:49:23,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-10-11 12:49:23,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 410 transitions. [2020-10-11 12:49:23,512 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 410 transitions. Word has length 14 [2020-10-11 12:49:23,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:49:23,513 INFO L481 AbstractCegarLoop]: Abstraction has 163 states and 410 transitions. [2020-10-11 12:49:23,513 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:49:23,513 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 410 transitions. [2020-10-11 12:49:23,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:49:23,513 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:49:23,513 INFO L421 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:49:23,714 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable176,170 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:49:23,714 INFO L429 AbstractCegarLoop]: === Iteration 178 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:49:23,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:49:23,715 INFO L82 PathProgramCache]: Analyzing trace with hash 576717301, now seen corresponding path program 144 times [2020-10-11 12:49:23,715 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:49:23,715 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433825016] [2020-10-11 12:49:23,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:49:23,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:49:23,837 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:49:23,838 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433825016] [2020-10-11 12:49:23,838 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1474984815] [2020-10-11 12:49:23,838 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 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 [2020-10-11 12:49:23,876 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-11 12:49:23,876 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:49:23,877 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:49:23,877 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:49:24,146 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:49:24,146 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:49:24,146 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:49:24,146 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470772644] [2020-10-11 12:49:24,146 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:49:24,146 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:49:24,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:49:24,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:49:24,147 INFO L87 Difference]: Start difference. First operand 163 states and 410 transitions. Second operand 17 states. [2020-10-11 12:49:24,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:49:24,664 INFO L93 Difference]: Finished difference Result 233 states and 548 transitions. [2020-10-11 12:49:24,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-11 12:49:24,665 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-11 12:49:24,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:49:24,666 INFO L225 Difference]: With dead ends: 233 [2020-10-11 12:49:24,666 INFO L226 Difference]: Without dead ends: 231 [2020-10-11 12:49:24,666 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 [2020-10-11 12:49:24,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2020-10-11 12:49:24,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 160. [2020-10-11 12:49:24,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2020-10-11 12:49:24,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 401 transitions. [2020-10-11 12:49:24,668 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 401 transitions. Word has length 14 [2020-10-11 12:49:24,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:49:24,668 INFO L481 AbstractCegarLoop]: Abstraction has 160 states and 401 transitions. [2020-10-11 12:49:24,668 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:49:24,669 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 401 transitions. [2020-10-11 12:49:24,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:49:24,669 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:49:24,669 INFO L421 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:49:24,869 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 171 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable177 [2020-10-11 12:49:24,870 INFO L429 AbstractCegarLoop]: === Iteration 179 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:49:24,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:49:24,870 INFO L82 PathProgramCache]: Analyzing trace with hash 1212993479, now seen corresponding path program 145 times [2020-10-11 12:49:24,871 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:49:24,871 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165376073] [2020-10-11 12:49:24,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:49:24,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:49:25,034 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:49:25,035 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165376073] [2020-10-11 12:49:25,035 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [13512906] [2020-10-11 12:49:25,035 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 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 [2020-10-11 12:49:25,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:49:25,075 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:49:25,076 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:49:25,278 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:49:25,278 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:49:25,279 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:49:25,279 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982763513] [2020-10-11 12:49:25,279 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:49:25,279 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:49:25,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:49:25,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=207, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:49:25,280 INFO L87 Difference]: Start difference. First operand 160 states and 401 transitions. Second operand 17 states. [2020-10-11 12:49:25,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:49:25,428 INFO L93 Difference]: Finished difference Result 204 states and 486 transitions. [2020-10-11 12:49:25,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-11 12:49:25,429 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-11 12:49:25,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:49:25,430 INFO L225 Difference]: With dead ends: 204 [2020-10-11 12:49:25,430 INFO L226 Difference]: Without dead ends: 202 [2020-10-11 12:49:25,430 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=113, Invalid=267, Unknown=0, NotChecked=0, Total=380 [2020-10-11 12:49:25,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-10-11 12:49:25,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 164. [2020-10-11 12:49:25,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2020-10-11 12:49:25,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 413 transitions. [2020-10-11 12:49:25,433 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 413 transitions. Word has length 14 [2020-10-11 12:49:25,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:49:25,433 INFO L481 AbstractCegarLoop]: Abstraction has 164 states and 413 transitions. [2020-10-11 12:49:25,433 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:49:25,434 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 413 transitions. [2020-10-11 12:49:25,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:49:25,434 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:49:25,434 INFO L421 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:49:25,634 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable178,172 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:49:25,635 INFO L429 AbstractCegarLoop]: === Iteration 180 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:49:25,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:49:25,635 INFO L82 PathProgramCache]: Analyzing trace with hash 1212994440, now seen corresponding path program 146 times [2020-10-11 12:49:25,636 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:49:25,636 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707593250] [2020-10-11 12:49:25,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:49:25,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:49:25,770 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:49:25,770 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707593250] [2020-10-11 12:49:25,770 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [641432512] [2020-10-11 12:49:25,770 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 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 [2020-10-11 12:49:25,807 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-11 12:49:25,808 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:49:25,808 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:49:25,809 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:49:26,001 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:49:26,002 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:49:26,002 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:49:26,002 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909766066] [2020-10-11 12:49:26,002 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:49:26,003 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:49:26,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:49:26,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:49:26,003 INFO L87 Difference]: Start difference. First operand 164 states and 413 transitions. Second operand 17 states. [2020-10-11 12:49:26,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:49:26,355 INFO L93 Difference]: Finished difference Result 225 states and 527 transitions. [2020-10-11 12:49:26,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-11 12:49:26,356 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-11 12:49:26,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:49:26,356 INFO L225 Difference]: With dead ends: 225 [2020-10-11 12:49:26,356 INFO L226 Difference]: Without dead ends: 223 [2020-10-11 12:49:26,356 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 [2020-10-11 12:49:26,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2020-10-11 12:49:26,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 162. [2020-10-11 12:49:26,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-10-11 12:49:26,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 407 transitions. [2020-10-11 12:49:26,359 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 407 transitions. Word has length 14 [2020-10-11 12:49:26,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:49:26,359 INFO L481 AbstractCegarLoop]: Abstraction has 162 states and 407 transitions. [2020-10-11 12:49:26,359 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:49:26,359 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 407 transitions. [2020-10-11 12:49:26,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:49:26,359 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:49:26,359 INFO L421 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:49:26,560 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 173 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable179 [2020-10-11 12:49:26,560 INFO L429 AbstractCegarLoop]: === Iteration 181 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:49:26,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:49:26,561 INFO L82 PathProgramCache]: Analyzing trace with hash 1213023270, now seen corresponding path program 147 times [2020-10-11 12:49:26,561 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:49:26,561 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390410125] [2020-10-11 12:49:26,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:49:26,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:49:26,689 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:49:26,689 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390410125] [2020-10-11 12:49:26,689 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1438202177] [2020-10-11 12:49:26,689 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 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 [2020-10-11 12:49:26,728 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-11 12:49:26,728 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:49:26,729 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:49:26,729 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:49:26,997 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:49:26,997 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:49:26,997 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:49:26,997 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493553864] [2020-10-11 12:49:26,997 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:49:26,998 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:49:26,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:49:26,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:49:26,998 INFO L87 Difference]: Start difference. First operand 162 states and 407 transitions. Second operand 17 states. [2020-10-11 12:49:27,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:49:27,475 INFO L93 Difference]: Finished difference Result 231 states and 539 transitions. [2020-10-11 12:49:27,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-11 12:49:27,476 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-11 12:49:27,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:49:27,477 INFO L225 Difference]: With dead ends: 231 [2020-10-11 12:49:27,477 INFO L226 Difference]: Without dead ends: 229 [2020-10-11 12:49:27,477 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 [2020-10-11 12:49:27,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2020-10-11 12:49:27,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 161. [2020-10-11 12:49:27,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2020-10-11 12:49:27,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 403 transitions. [2020-10-11 12:49:27,480 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 403 transitions. Word has length 14 [2020-10-11 12:49:27,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:49:27,480 INFO L481 AbstractCegarLoop]: Abstraction has 161 states and 403 transitions. [2020-10-11 12:49:27,481 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:49:27,481 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 403 transitions. [2020-10-11 12:49:27,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:49:27,481 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:49:27,481 INFO L421 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:49:27,681 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable180,174 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:49:27,682 INFO L429 AbstractCegarLoop]: === Iteration 182 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:49:27,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:49:27,682 INFO L82 PathProgramCache]: Analyzing trace with hash 1233549269, now seen corresponding path program 148 times [2020-10-11 12:49:27,683 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:49:27,683 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024769996] [2020-10-11 12:49:27,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:49:27,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:49:27,817 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:49:27,817 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024769996] [2020-10-11 12:49:27,817 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1551842086] [2020-10-11 12:49:27,817 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 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 [2020-10-11 12:49:27,855 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-11 12:49:27,856 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:49:27,857 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:49:27,857 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:49:28,055 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:49:28,056 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:49:28,056 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:49:28,056 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365383678] [2020-10-11 12:49:28,056 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:49:28,056 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:49:28,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:49:28,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:49:28,057 INFO L87 Difference]: Start difference. First operand 161 states and 403 transitions. Second operand 17 states. [2020-10-11 12:49:28,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:49:28,329 INFO L93 Difference]: Finished difference Result 200 states and 477 transitions. [2020-10-11 12:49:28,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-11 12:49:28,331 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-11 12:49:28,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:49:28,332 INFO L225 Difference]: With dead ends: 200 [2020-10-11 12:49:28,332 INFO L226 Difference]: Without dead ends: 198 [2020-10-11 12:49:28,333 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=129, Invalid=291, Unknown=0, NotChecked=0, Total=420 [2020-10-11 12:49:28,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2020-10-11 12:49:28,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 163. [2020-10-11 12:49:28,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-10-11 12:49:28,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 409 transitions. [2020-10-11 12:49:28,338 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 409 transitions. Word has length 14 [2020-10-11 12:49:28,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:49:28,338 INFO L481 AbstractCegarLoop]: Abstraction has 163 states and 409 transitions. [2020-10-11 12:49:28,339 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:49:28,339 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 409 transitions. [2020-10-11 12:49:28,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:49:28,339 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:49:28,340 INFO L421 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:49:28,540 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable181,175 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:49:28,540 INFO L429 AbstractCegarLoop]: === Iteration 183 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:49:28,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:49:28,541 INFO L82 PathProgramCache]: Analyzing trace with hash 1233550230, now seen corresponding path program 149 times [2020-10-11 12:49:28,541 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:49:28,541 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885937536] [2020-10-11 12:49:28,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:49:28,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:49:28,665 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:49:28,665 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885937536] [2020-10-11 12:49:28,665 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1594335748] [2020-10-11 12:49:28,665 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 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 [2020-10-11 12:49:28,710 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-11 12:49:28,710 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:49:28,711 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:49:28,711 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:49:28,908 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:49:28,908 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:49:28,908 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:49:28,909 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779040694] [2020-10-11 12:49:28,909 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:49:28,909 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:49:28,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:49:28,910 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:49:28,910 INFO L87 Difference]: Start difference. First operand 163 states and 409 transitions. Second operand 17 states. [2020-10-11 12:49:29,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:49:29,340 INFO L93 Difference]: Finished difference Result 221 states and 518 transitions. [2020-10-11 12:49:29,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-11 12:49:29,340 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-11 12:49:29,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:49:29,341 INFO L225 Difference]: With dead ends: 221 [2020-10-11 12:49:29,341 INFO L226 Difference]: Without dead ends: 219 [2020-10-11 12:49:29,341 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 [2020-10-11 12:49:29,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2020-10-11 12:49:29,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 162. [2020-10-11 12:49:29,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-10-11 12:49:29,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 405 transitions. [2020-10-11 12:49:29,345 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 405 transitions. Word has length 14 [2020-10-11 12:49:29,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:49:29,345 INFO L481 AbstractCegarLoop]: Abstraction has 162 states and 405 transitions. [2020-10-11 12:49:29,345 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:49:29,345 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 405 transitions. [2020-10-11 12:49:29,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:49:29,346 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:49:29,346 INFO L421 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:49:29,555 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 176 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable182 [2020-10-11 12:49:29,556 INFO L429 AbstractCegarLoop]: === Iteration 184 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:49:29,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:49:29,556 INFO L82 PathProgramCache]: Analyzing trace with hash 1234212359, now seen corresponding path program 150 times [2020-10-11 12:49:29,556 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:49:29,557 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595711213] [2020-10-11 12:49:29,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:49:29,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:49:29,691 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:49:29,692 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595711213] [2020-10-11 12:49:29,692 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2014332809] [2020-10-11 12:49:29,692 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 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 [2020-10-11 12:49:29,732 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-11 12:49:29,732 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:49:29,733 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 13 conjunts are in the unsatisfiable core [2020-10-11 12:49:29,733 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:49:29,761 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:49:29,761 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:49:29,762 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2020-10-11 12:49:29,762 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021869920] [2020-10-11 12:49:29,762 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-11 12:49:29,762 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:49:29,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-11 12:49:29,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-10-11 12:49:29,763 INFO L87 Difference]: Start difference. First operand 162 states and 405 transitions. Second operand 11 states. [2020-10-11 12:49:29,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:49:29,958 INFO L93 Difference]: Finished difference Result 201 states and 476 transitions. [2020-10-11 12:49:29,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-11 12:49:29,959 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 14 [2020-10-11 12:49:29,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:49:29,960 INFO L225 Difference]: With dead ends: 201 [2020-10-11 12:49:29,960 INFO L226 Difference]: Without dead ends: 199 [2020-10-11 12:49:29,960 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 [2020-10-11 12:49:29,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2020-10-11 12:49:29,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 166. [2020-10-11 12:49:29,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states. [2020-10-11 12:49:29,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 411 transitions. [2020-10-11 12:49:29,963 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 411 transitions. Word has length 14 [2020-10-11 12:49:29,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:49:29,963 INFO L481 AbstractCegarLoop]: Abstraction has 166 states and 411 transitions. [2020-10-11 12:49:29,963 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-11 12:49:29,963 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 411 transitions. [2020-10-11 12:49:29,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:49:29,964 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:49:29,964 INFO L421 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:49:30,164 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable183,177 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:49:30,165 INFO L429 AbstractCegarLoop]: === Iteration 185 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:49:30,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:49:30,165 INFO L82 PathProgramCache]: Analyzing trace with hash 1234234679, now seen corresponding path program 151 times [2020-10-11 12:49:30,165 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:49:30,166 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503630147] [2020-10-11 12:49:30,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:49:30,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:49:30,296 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:49:30,297 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503630147] [2020-10-11 12:49:30,297 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [38631181] [2020-10-11 12:49:30,297 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 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 [2020-10-11 12:49:30,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:49:30,337 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:49:30,338 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:49:30,523 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-11 12:49:30,568 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:49:30,568 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:49:30,568 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:49:30,568 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24264009] [2020-10-11 12:49:30,569 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:49:30,569 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:49:30,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:49:30,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:49:30,570 INFO L87 Difference]: Start difference. First operand 166 states and 411 transitions. Second operand 17 states. [2020-10-11 12:49:31,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:49:31,113 INFO L93 Difference]: Finished difference Result 226 states and 539 transitions. [2020-10-11 12:49:31,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-11 12:49:31,114 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-11 12:49:31,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:49:31,114 INFO L225 Difference]: With dead ends: 226 [2020-10-11 12:49:31,114 INFO L226 Difference]: Without dead ends: 221 [2020-10-11 12:49:31,114 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=264, Invalid=548, Unknown=0, NotChecked=0, Total=812 [2020-10-11 12:49:31,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2020-10-11 12:49:31,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 164. [2020-10-11 12:49:31,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2020-10-11 12:49:31,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 404 transitions. [2020-10-11 12:49:31,118 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 404 transitions. Word has length 14 [2020-10-11 12:49:31,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:49:31,118 INFO L481 AbstractCegarLoop]: Abstraction has 164 states and 404 transitions. [2020-10-11 12:49:31,118 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:49:31,118 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 404 transitions. [2020-10-11 12:49:31,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:49:31,119 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:49:31,119 INFO L421 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:49:31,319 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable184,178 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:49:31,320 INFO L429 AbstractCegarLoop]: === Iteration 186 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:49:31,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:49:31,320 INFO L82 PathProgramCache]: Analyzing trace with hash 1234242150, now seen corresponding path program 152 times [2020-10-11 12:49:31,320 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:49:31,321 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697812850] [2020-10-11 12:49:31,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:49:31,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:49:31,437 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:49:31,437 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697812850] [2020-10-11 12:49:31,437 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [569794184] [2020-10-11 12:49:31,437 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 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 [2020-10-11 12:49:31,476 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-11 12:49:31,476 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:49:31,477 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:49:31,478 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:49:31,705 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:49:31,706 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:49:31,706 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:49:31,706 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357056001] [2020-10-11 12:49:31,707 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:49:31,707 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:49:31,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:49:31,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:49:31,707 INFO L87 Difference]: Start difference. First operand 164 states and 404 transitions. Second operand 17 states. [2020-10-11 12:49:32,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:49:32,147 INFO L93 Difference]: Finished difference Result 218 states and 517 transitions. [2020-10-11 12:49:32,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-11 12:49:32,148 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-11 12:49:32,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:49:32,149 INFO L225 Difference]: With dead ends: 218 [2020-10-11 12:49:32,149 INFO L226 Difference]: Without dead ends: 216 [2020-10-11 12:49:32,150 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 [2020-10-11 12:49:32,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2020-10-11 12:49:32,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 166. [2020-10-11 12:49:32,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states. [2020-10-11 12:49:32,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 411 transitions. [2020-10-11 12:49:32,157 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 411 transitions. Word has length 14 [2020-10-11 12:49:32,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:49:32,158 INFO L481 AbstractCegarLoop]: Abstraction has 166 states and 411 transitions. [2020-10-11 12:49:32,158 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:49:32,158 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 411 transitions. [2020-10-11 12:49:32,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:49:32,158 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:49:32,158 INFO L421 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:49:32,359 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable185,179 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:49:32,359 INFO L429 AbstractCegarLoop]: === Iteration 187 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:49:32,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:49:32,360 INFO L82 PathProgramCache]: Analyzing trace with hash 1234263509, now seen corresponding path program 153 times [2020-10-11 12:49:32,360 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:49:32,360 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471494763] [2020-10-11 12:49:32,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:49:32,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:49:32,466 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:49:32,466 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471494763] [2020-10-11 12:49:32,466 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1932095927] [2020-10-11 12:49:32,467 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 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 [2020-10-11 12:49:32,508 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-11 12:49:32,508 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:49:32,509 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:49:32,509 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:49:32,700 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-11 12:49:32,737 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:49:32,737 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:49:32,738 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:49:32,738 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481118588] [2020-10-11 12:49:32,738 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:49:32,738 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:49:32,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:49:32,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=183, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:49:32,739 INFO L87 Difference]: Start difference. First operand 166 states and 411 transitions. Second operand 17 states. [2020-10-11 12:49:33,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:49:33,492 INFO L93 Difference]: Finished difference Result 248 states and 590 transitions. [2020-10-11 12:49:33,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-11 12:49:33,493 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-11 12:49:33,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:49:33,493 INFO L225 Difference]: With dead ends: 248 [2020-10-11 12:49:33,493 INFO L226 Difference]: Without dead ends: 243 [2020-10-11 12:49:33,494 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=323, Invalid=669, Unknown=0, NotChecked=0, Total=992 [2020-10-11 12:49:33,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2020-10-11 12:49:33,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 166. [2020-10-11 12:49:33,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states. [2020-10-11 12:49:33,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 411 transitions. [2020-10-11 12:49:33,497 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 411 transitions. Word has length 14 [2020-10-11 12:49:33,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:49:33,498 INFO L481 AbstractCegarLoop]: Abstraction has 166 states and 411 transitions. [2020-10-11 12:49:33,498 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:49:33,498 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 411 transitions. [2020-10-11 12:49:33,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:49:33,498 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:49:33,498 INFO L421 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:49:33,700 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable186,180 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:49:33,700 INFO L429 AbstractCegarLoop]: === Iteration 188 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:49:33,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:49:33,701 INFO L82 PathProgramCache]: Analyzing trace with hash 1234264470, now seen corresponding path program 154 times [2020-10-11 12:49:33,701 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:49:33,701 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639054444] [2020-10-11 12:49:33,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:49:33,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:49:33,814 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:49:33,815 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639054444] [2020-10-11 12:49:33,815 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1688194096] [2020-10-11 12:49:33,815 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 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 [2020-10-11 12:49:33,852 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-11 12:49:33,853 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:49:33,854 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:49:33,854 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:49:34,042 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-11 12:49:34,067 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:49:34,067 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:49:34,067 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:49:34,067 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101927335] [2020-10-11 12:49:34,067 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:49:34,067 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:49:34,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:49:34,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:49:34,068 INFO L87 Difference]: Start difference. First operand 166 states and 411 transitions. Second operand 17 states. [2020-10-11 12:49:34,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:49:34,625 INFO L93 Difference]: Finished difference Result 238 states and 567 transitions. [2020-10-11 12:49:34,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-11 12:49:34,626 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-11 12:49:34,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:49:34,627 INFO L225 Difference]: With dead ends: 238 [2020-10-11 12:49:34,627 INFO L226 Difference]: Without dead ends: 233 [2020-10-11 12:49:34,627 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=264, Invalid=548, Unknown=0, NotChecked=0, Total=812 [2020-10-11 12:49:34,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2020-10-11 12:49:34,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 162. [2020-10-11 12:49:34,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-10-11 12:49:34,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 397 transitions. [2020-10-11 12:49:34,631 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 397 transitions. Word has length 14 [2020-10-11 12:49:34,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:49:34,631 INFO L481 AbstractCegarLoop]: Abstraction has 162 states and 397 transitions. [2020-10-11 12:49:34,631 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:49:34,632 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 397 transitions. [2020-10-11 12:49:34,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:49:34,632 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:49:34,632 INFO L421 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:49:34,832 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable187,181 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:49:34,833 INFO L429 AbstractCegarLoop]: === Iteration 189 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:49:34,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:49:34,833 INFO L82 PathProgramCache]: Analyzing trace with hash 1234472790, now seen corresponding path program 155 times [2020-10-11 12:49:34,833 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:49:34,834 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945185386] [2020-10-11 12:49:34,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:49:34,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:49:34,944 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:49:34,944 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945185386] [2020-10-11 12:49:34,944 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1043590194] [2020-10-11 12:49:34,945 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 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 [2020-10-11 12:49:34,984 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-11 12:49:34,984 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:49:34,985 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:49:34,986 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:49:35,237 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:49:35,238 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:49:35,238 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:49:35,238 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228774215] [2020-10-11 12:49:35,238 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:49:35,239 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:49:35,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:49:35,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:49:35,239 INFO L87 Difference]: Start difference. First operand 162 states and 397 transitions. Second operand 17 states. [2020-10-11 12:49:35,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:49:35,928 INFO L93 Difference]: Finished difference Result 235 states and 547 transitions. [2020-10-11 12:49:35,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-11 12:49:35,929 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-11 12:49:35,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:49:35,929 INFO L225 Difference]: With dead ends: 235 [2020-10-11 12:49:35,929 INFO L226 Difference]: Without dead ends: 233 [2020-10-11 12:49:35,930 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=201, Invalid=501, Unknown=0, NotChecked=0, Total=702 [2020-10-11 12:49:35,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2020-10-11 12:49:35,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 164. [2020-10-11 12:49:35,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2020-10-11 12:49:35,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 404 transitions. [2020-10-11 12:49:35,933 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 404 transitions. Word has length 14 [2020-10-11 12:49:35,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:49:35,934 INFO L481 AbstractCegarLoop]: Abstraction has 164 states and 404 transitions. [2020-10-11 12:49:35,934 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:49:35,934 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 404 transitions. [2020-10-11 12:49:35,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:49:35,934 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:49:35,934 INFO L421 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:49:36,144 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable188,182 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:49:36,144 INFO L429 AbstractCegarLoop]: === Iteration 190 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:49:36,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:49:36,145 INFO L82 PathProgramCache]: Analyzing trace with hash 1235135880, now seen corresponding path program 156 times [2020-10-11 12:49:36,145 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:49:36,145 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601914987] [2020-10-11 12:49:36,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:49:36,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:49:36,267 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:49:36,268 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601914987] [2020-10-11 12:49:36,268 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [913616105] [2020-10-11 12:49:36,268 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 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 [2020-10-11 12:49:36,306 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-11 12:49:36,306 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:49:36,307 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:49:36,308 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:49:36,602 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:49:36,602 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:49:36,602 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:49:36,602 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80308297] [2020-10-11 12:49:36,603 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:49:36,603 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:49:36,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:49:36,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:49:36,603 INFO L87 Difference]: Start difference. First operand 164 states and 404 transitions. Second operand 17 states. [2020-10-11 12:49:37,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:49:37,378 INFO L93 Difference]: Finished difference Result 252 states and 594 transitions. [2020-10-11 12:49:37,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-11 12:49:37,379 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-11 12:49:37,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:49:37,379 INFO L225 Difference]: With dead ends: 252 [2020-10-11 12:49:37,379 INFO L226 Difference]: Without dead ends: 250 [2020-10-11 12:49:37,380 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 163 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=272, Invalid=598, Unknown=0, NotChecked=0, Total=870 [2020-10-11 12:49:37,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2020-10-11 12:49:37,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 166. [2020-10-11 12:49:37,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states. [2020-10-11 12:49:37,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 411 transitions. [2020-10-11 12:49:37,383 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 411 transitions. Word has length 14 [2020-10-11 12:49:37,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:49:37,383 INFO L481 AbstractCegarLoop]: Abstraction has 166 states and 411 transitions. [2020-10-11 12:49:37,383 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:49:37,383 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 411 transitions. [2020-10-11 12:49:37,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:49:37,384 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:49:37,384 INFO L421 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:49:37,584 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 183 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable189 [2020-10-11 12:49:37,585 INFO L429 AbstractCegarLoop]: === Iteration 191 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:49:37,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:49:37,585 INFO L82 PathProgramCache]: Analyzing trace with hash 1235157239, now seen corresponding path program 157 times [2020-10-11 12:49:37,585 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:49:37,586 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016356664] [2020-10-11 12:49:37,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:49:37,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:49:37,711 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:49:37,711 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016356664] [2020-10-11 12:49:37,711 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [980096645] [2020-10-11 12:49:37,712 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 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 [2020-10-11 12:49:37,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:49:37,749 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:49:37,750 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:49:37,982 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-11 12:49:38,033 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:49:38,034 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:49:38,034 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:49:38,034 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721987028] [2020-10-11 12:49:38,034 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:49:38,034 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:49:38,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:49:38,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=181, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:49:38,035 INFO L87 Difference]: Start difference. First operand 166 states and 411 transitions. Second operand 17 states. [2020-10-11 12:49:38,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:49:38,934 INFO L93 Difference]: Finished difference Result 258 states and 617 transitions. [2020-10-11 12:49:38,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-11 12:49:38,936 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-11 12:49:38,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:49:38,936 INFO L225 Difference]: With dead ends: 258 [2020-10-11 12:49:38,937 INFO L226 Difference]: Without dead ends: 253 [2020-10-11 12:49:38,937 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 240 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=371, Invalid=751, Unknown=0, NotChecked=0, Total=1122 [2020-10-11 12:49:38,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2020-10-11 12:49:38,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 167. [2020-10-11 12:49:38,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2020-10-11 12:49:38,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 416 transitions. [2020-10-11 12:49:38,940 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 416 transitions. Word has length 14 [2020-10-11 12:49:38,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:49:38,940 INFO L481 AbstractCegarLoop]: Abstraction has 167 states and 416 transitions. [2020-10-11 12:49:38,940 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:49:38,941 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 416 transitions. [2020-10-11 12:49:38,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:49:38,941 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:49:38,941 INFO L421 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:49:39,142 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 184 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable190 [2020-10-11 12:49:39,143 INFO L429 AbstractCegarLoop]: === Iteration 192 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:49:39,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:49:39,143 INFO L82 PathProgramCache]: Analyzing trace with hash 1235158200, now seen corresponding path program 158 times [2020-10-11 12:49:39,143 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:49:39,144 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991871850] [2020-10-11 12:49:39,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:49:39,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:49:39,286 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:49:39,286 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991871850] [2020-10-11 12:49:39,286 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [843121603] [2020-10-11 12:49:39,286 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 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 [2020-10-11 12:49:39,335 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-11 12:49:39,336 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:49:39,337 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:49:39,337 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:49:41,590 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-11 12:49:41,660 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:49:41,660 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:49:41,660 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:49:41,660 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969574863] [2020-10-11 12:49:41,661 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:49:41,661 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:49:41,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:49:41,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=185, Unknown=1, NotChecked=0, Total=272 [2020-10-11 12:49:41,661 INFO L87 Difference]: Start difference. First operand 167 states and 416 transitions. Second operand 17 states. [2020-10-11 12:49:46,106 WARN L193 SmtUtils]: Spent 4.09 s on a formula simplification. DAG size of input: 39 DAG size of output: 35 [2020-10-11 12:49:50,401 WARN L193 SmtUtils]: Spent 4.09 s on a formula simplification. DAG size of input: 44 DAG size of output: 38 [2020-10-11 12:49:51,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:49:51,131 INFO L93 Difference]: Finished difference Result 287 states and 685 transitions. [2020-10-11 12:49:51,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-11 12:49:51,132 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-11 12:49:51,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:49:51,133 INFO L225 Difference]: With dead ends: 287 [2020-10-11 12:49:51,133 INFO L226 Difference]: Without dead ends: 279 [2020-10-11 12:49:51,133 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 265 ImplicationChecksByTransitivity, 11.6s TimeCoverageRelationStatistics Valid=370, Invalid=819, Unknown=1, NotChecked=0, Total=1190 [2020-10-11 12:49:51,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2020-10-11 12:49:51,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 162. [2020-10-11 12:49:51,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-10-11 12:49:51,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 400 transitions. [2020-10-11 12:49:51,142 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 400 transitions. Word has length 14 [2020-10-11 12:49:51,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:49:51,142 INFO L481 AbstractCegarLoop]: Abstraction has 162 states and 400 transitions. [2020-10-11 12:49:51,142 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:49:51,142 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 400 transitions. [2020-10-11 12:49:51,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:49:51,143 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:49:51,143 INFO L421 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:49:51,349 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 185 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable191 [2020-10-11 12:49:51,350 INFO L429 AbstractCegarLoop]: === Iteration 193 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:49:51,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:49:51,350 INFO L82 PathProgramCache]: Analyzing trace with hash 1235187030, now seen corresponding path program 159 times [2020-10-11 12:49:51,351 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:49:51,351 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485284352] [2020-10-11 12:49:51,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:49:51,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:49:51,478 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:49:51,478 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485284352] [2020-10-11 12:49:51,478 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1410929686] [2020-10-11 12:49:51,478 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 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 [2020-10-11 12:49:51,521 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-11 12:49:51,521 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:49:51,522 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:49:51,522 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:49:51,742 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-11 12:49:51,743 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-11 12:49:53,161 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:49:53,161 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:49:53,161 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 16 [2020-10-11 12:49:53,161 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332431858] [2020-10-11 12:49:53,162 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-11 12:49:53,162 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:49:53,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-11 12:49:53,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=216, Unknown=1, NotChecked=0, Total=306 [2020-10-11 12:49:53,163 INFO L87 Difference]: Start difference. First operand 162 states and 400 transitions. Second operand 18 states. [2020-10-11 12:49:55,612 WARN L193 SmtUtils]: Spent 1.89 s on a formula simplification that was a NOOP. DAG size: 39 [2020-10-11 12:50:03,591 WARN L193 SmtUtils]: Spent 2.05 s on a formula simplification that was a NOOP. DAG size: 46 [2020-10-11 12:50:17,785 WARN L193 SmtUtils]: Spent 3.92 s on a formula simplification. DAG size of input: 55 DAG size of output: 53 [2020-10-11 12:50:28,075 WARN L193 SmtUtils]: Spent 2.07 s on a formula simplification. DAG size of input: 34 DAG size of output: 32 [2020-10-11 12:50:53,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:50:53,794 INFO L93 Difference]: Finished difference Result 283 states and 667 transitions. [2020-10-11 12:50:53,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-11 12:50:53,796 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 14 [2020-10-11 12:50:53,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:50:53,797 INFO L225 Difference]: With dead ends: 283 [2020-10-11 12:50:53,797 INFO L226 Difference]: Without dead ends: 278 [2020-10-11 12:50:53,797 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 302 ImplicationChecksByTransitivity, 31.5s TimeCoverageRelationStatistics Valid=391, Invalid=930, Unknown=11, NotChecked=0, Total=1332 [2020-10-11 12:50:53,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2020-10-11 12:50:53,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 160. [2020-10-11 12:50:53,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2020-10-11 12:50:53,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 390 transitions. [2020-10-11 12:50:53,801 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 390 transitions. Word has length 14 [2020-10-11 12:50:53,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:50:53,801 INFO L481 AbstractCegarLoop]: Abstraction has 160 states and 390 transitions. [2020-10-11 12:50:53,802 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-11 12:50:53,802 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 390 transitions. [2020-10-11 12:50:53,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:50:53,802 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:50:53,802 INFO L421 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:50:54,002 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable192,186 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:50:54,003 INFO L429 AbstractCegarLoop]: === Iteration 194 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:50:54,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:50:54,003 INFO L82 PathProgramCache]: Analyzing trace with hash 1241622630, now seen corresponding path program 160 times [2020-10-11 12:50:54,004 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:50:54,004 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155972506] [2020-10-11 12:50:54,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:50:54,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:50:54,129 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:50:54,130 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155972506] [2020-10-11 12:50:54,130 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1377572696] [2020-10-11 12:50:54,130 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 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 [2020-10-11 12:50:54,168 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-11 12:50:54,168 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:50:54,169 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:50:54,169 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:50:54,530 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:50:54,531 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:50:54,531 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:50:54,531 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807589952] [2020-10-11 12:50:54,531 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:50:54,531 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:50:54,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:50:54,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:50:54,532 INFO L87 Difference]: Start difference. First operand 160 states and 390 transitions. Second operand 17 states. [2020-10-11 12:50:55,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:50:55,163 INFO L93 Difference]: Finished difference Result 235 states and 543 transitions. [2020-10-11 12:50:55,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-11 12:50:55,164 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-11 12:50:55,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:50:55,165 INFO L225 Difference]: With dead ends: 235 [2020-10-11 12:50:55,165 INFO L226 Difference]: Without dead ends: 233 [2020-10-11 12:50:55,165 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=193, Invalid=509, Unknown=0, NotChecked=0, Total=702 [2020-10-11 12:50:55,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2020-10-11 12:50:55,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 163. [2020-10-11 12:50:55,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-10-11 12:50:55,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 401 transitions. [2020-10-11 12:50:55,169 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 401 transitions. Word has length 14 [2020-10-11 12:50:55,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:50:55,169 INFO L481 AbstractCegarLoop]: Abstraction has 163 states and 401 transitions. [2020-10-11 12:50:55,169 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:50:55,169 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 401 transitions. [2020-10-11 12:50:55,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:50:55,169 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:50:55,169 INFO L421 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:50:55,370 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable193,187 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:50:55,370 INFO L429 AbstractCegarLoop]: === Iteration 195 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:50:55,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:50:55,371 INFO L82 PathProgramCache]: Analyzing trace with hash 1241623591, now seen corresponding path program 161 times [2020-10-11 12:50:55,371 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:50:55,371 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527554543] [2020-10-11 12:50:55,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:50:55,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:50:55,515 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:50:55,515 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527554543] [2020-10-11 12:50:55,515 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1919849558] [2020-10-11 12:50:55,515 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 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 [2020-10-11 12:50:55,554 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-11 12:50:55,555 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:50:55,555 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:50:55,556 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:51:00,263 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:51:00,263 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:51:00,263 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:51:00,264 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084047709] [2020-10-11 12:51:00,264 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:51:00,264 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:51:00,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:51:00,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=212, Unknown=1, NotChecked=0, Total=272 [2020-10-11 12:51:00,264 INFO L87 Difference]: Start difference. First operand 163 states and 401 transitions. Second operand 17 states. [2020-10-11 12:51:04,592 WARN L193 SmtUtils]: Spent 4.10 s on a formula simplification. DAG size of input: 41 DAG size of output: 37 [2020-10-11 12:51:11,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:51:11,090 INFO L93 Difference]: Finished difference Result 241 states and 556 transitions. [2020-10-11 12:51:11,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-11 12:51:11,091 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-11 12:51:11,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:51:11,092 INFO L225 Difference]: With dead ends: 241 [2020-10-11 12:51:11,092 INFO L226 Difference]: Without dead ends: 239 [2020-10-11 12:51:11,092 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 9.3s TimeCoverageRelationStatistics Valid=193, Invalid=508, Unknown=1, NotChecked=0, Total=702 [2020-10-11 12:51:11,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2020-10-11 12:51:11,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 163. [2020-10-11 12:51:11,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-10-11 12:51:11,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 400 transitions. [2020-10-11 12:51:11,094 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 400 transitions. Word has length 14 [2020-10-11 12:51:11,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:51:11,095 INFO L481 AbstractCegarLoop]: Abstraction has 163 states and 400 transitions. [2020-10-11 12:51:11,095 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:51:11,095 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 400 transitions. [2020-10-11 12:51:11,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:51:11,095 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:51:11,095 INFO L421 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:51:11,296 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 188 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable194 [2020-10-11 12:51:11,296 INFO L429 AbstractCegarLoop]: === Iteration 196 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:51:11,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:51:11,297 INFO L82 PathProgramCache]: Analyzing trace with hash 1241652421, now seen corresponding path program 162 times [2020-10-11 12:51:11,297 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:51:11,297 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866814755] [2020-10-11 12:51:11,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:51:11,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:51:11,442 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:51:11,442 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866814755] [2020-10-11 12:51:11,442 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [333585551] [2020-10-11 12:51:11,443 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 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 [2020-10-11 12:51:11,485 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-11 12:51:11,485 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:51:11,486 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:51:11,486 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:51:11,864 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:51:11,864 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:51:11,864 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:51:11,864 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402700213] [2020-10-11 12:51:11,865 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:51:11,865 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:51:11,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:51:11,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:51:11,865 INFO L87 Difference]: Start difference. First operand 163 states and 400 transitions. Second operand 17 states. [2020-10-11 12:51:12,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:51:12,470 INFO L93 Difference]: Finished difference Result 235 states and 546 transitions. [2020-10-11 12:51:12,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-11 12:51:12,471 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-11 12:51:12,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:51:12,472 INFO L225 Difference]: With dead ends: 235 [2020-10-11 12:51:12,472 INFO L226 Difference]: Without dead ends: 233 [2020-10-11 12:51:12,472 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=192, Invalid=510, Unknown=0, NotChecked=0, Total=702 [2020-10-11 12:51:12,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2020-10-11 12:51:12,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 162. [2020-10-11 12:51:12,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-10-11 12:51:12,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 397 transitions. [2020-10-11 12:51:12,475 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 397 transitions. Word has length 14 [2020-10-11 12:51:12,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:51:12,475 INFO L481 AbstractCegarLoop]: Abstraction has 162 states and 397 transitions. [2020-10-11 12:51:12,475 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:51:12,475 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 397 transitions. [2020-10-11 12:51:12,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:51:12,476 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:51:12,476 INFO L421 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:51:12,676 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable195,189 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:51:12,677 INFO L429 AbstractCegarLoop]: === Iteration 197 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:51:12,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:51:12,677 INFO L82 PathProgramCache]: Analyzing trace with hash 1262178420, now seen corresponding path program 163 times [2020-10-11 12:51:12,677 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:51:12,678 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625759082] [2020-10-11 12:51:12,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:51:12,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:51:12,836 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:51:12,836 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625759082] [2020-10-11 12:51:12,836 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [240249375] [2020-10-11 12:51:12,836 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 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 [2020-10-11 12:51:12,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:51:12,876 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:51:12,877 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:51:13,207 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:51:13,207 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:51:13,207 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:51:13,207 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817527271] [2020-10-11 12:51:13,208 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:51:13,208 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:51:13,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:51:13,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:51:13,208 INFO L87 Difference]: Start difference. First operand 162 states and 397 transitions. Second operand 17 states. [2020-10-11 12:51:14,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:51:14,145 INFO L93 Difference]: Finished difference Result 254 states and 587 transitions. [2020-10-11 12:51:14,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-11 12:51:14,146 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-11 12:51:14,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:51:14,147 INFO L225 Difference]: With dead ends: 254 [2020-10-11 12:51:14,147 INFO L226 Difference]: Without dead ends: 252 [2020-10-11 12:51:14,148 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 209 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=290, Invalid=702, Unknown=0, NotChecked=0, Total=992 [2020-10-11 12:51:14,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2020-10-11 12:51:14,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 164. [2020-10-11 12:51:14,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2020-10-11 12:51:14,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 405 transitions. [2020-10-11 12:51:14,151 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 405 transitions. Word has length 14 [2020-10-11 12:51:14,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:51:14,152 INFO L481 AbstractCegarLoop]: Abstraction has 164 states and 405 transitions. [2020-10-11 12:51:14,152 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:51:14,152 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 405 transitions. [2020-10-11 12:51:14,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:51:14,152 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:51:14,152 INFO L421 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:51:14,352 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 190 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable196 [2020-10-11 12:51:14,353 INFO L429 AbstractCegarLoop]: === Iteration 198 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:51:14,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:51:14,354 INFO L82 PathProgramCache]: Analyzing trace with hash 1262179381, now seen corresponding path program 164 times [2020-10-11 12:51:14,354 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:51:14,354 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793897065] [2020-10-11 12:51:14,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:51:14,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:51:14,488 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:51:14,488 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793897065] [2020-10-11 12:51:14,488 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1559633991] [2020-10-11 12:51:14,488 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 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 [2020-10-11 12:51:14,526 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-11 12:51:14,527 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:51:14,527 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:51:14,528 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:51:16,471 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:51:16,471 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:51:16,471 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:51:16,471 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008422876] [2020-10-11 12:51:16,472 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:51:16,472 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:51:16,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:51:16,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:51:16,472 INFO L87 Difference]: Start difference. First operand 164 states and 405 transitions. Second operand 17 states. [2020-10-11 12:51:20,961 WARN L193 SmtUtils]: Spent 4.10 s on a formula simplification. DAG size of input: 41 DAG size of output: 37 [2020-10-11 12:51:35,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:51:35,852 INFO L93 Difference]: Finished difference Result 264 states and 610 transitions. [2020-10-11 12:51:35,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-11 12:51:35,853 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-11 12:51:35,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:51:35,854 INFO L225 Difference]: With dead ends: 264 [2020-10-11 12:51:35,854 INFO L226 Difference]: Without dead ends: 262 [2020-10-11 12:51:35,854 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 214 ImplicationChecksByTransitivity, 15.0s TimeCoverageRelationStatistics Valid=289, Invalid=699, Unknown=4, NotChecked=0, Total=992 [2020-10-11 12:51:35,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2020-10-11 12:51:35,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 165. [2020-10-11 12:51:35,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2020-10-11 12:51:35,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 409 transitions. [2020-10-11 12:51:35,858 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 409 transitions. Word has length 14 [2020-10-11 12:51:35,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:51:35,858 INFO L481 AbstractCegarLoop]: Abstraction has 165 states and 409 transitions. [2020-10-11 12:51:35,858 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:51:35,858 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 409 transitions. [2020-10-11 12:51:35,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:51:35,859 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:51:35,859 INFO L421 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:51:36,059 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable197,191 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:51:36,060 INFO L429 AbstractCegarLoop]: === Iteration 199 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:51:36,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:51:36,060 INFO L82 PathProgramCache]: Analyzing trace with hash 1262841510, now seen corresponding path program 165 times [2020-10-11 12:51:36,060 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:51:36,061 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513564584] [2020-10-11 12:51:36,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:51:36,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:51:36,202 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:51:36,203 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513564584] [2020-10-11 12:51:36,203 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1818925281] [2020-10-11 12:51:36,203 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 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 [2020-10-11 12:51:36,257 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-11 12:51:36,258 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:51:36,259 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:51:36,259 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:51:36,563 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:51:36,563 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:51:36,563 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:51:36,564 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131362860] [2020-10-11 12:51:36,564 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:51:36,564 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:51:36,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:51:36,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:51:36,564 INFO L87 Difference]: Start difference. First operand 165 states and 409 transitions. Second operand 17 states. [2020-10-11 12:51:37,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:51:37,452 INFO L93 Difference]: Finished difference Result 255 states and 604 transitions. [2020-10-11 12:51:37,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-11 12:51:37,453 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-11 12:51:37,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:51:37,453 INFO L225 Difference]: With dead ends: 255 [2020-10-11 12:51:37,453 INFO L226 Difference]: Without dead ends: 253 [2020-10-11 12:51:37,454 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=313, Invalid=679, Unknown=0, NotChecked=0, Total=992 [2020-10-11 12:51:37,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2020-10-11 12:51:37,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 167. [2020-10-11 12:51:37,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2020-10-11 12:51:37,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 416 transitions. [2020-10-11 12:51:37,457 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 416 transitions. Word has length 14 [2020-10-11 12:51:37,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:51:37,458 INFO L481 AbstractCegarLoop]: Abstraction has 167 states and 416 transitions. [2020-10-11 12:51:37,458 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:51:37,458 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 416 transitions. [2020-10-11 12:51:37,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:51:37,458 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:51:37,458 INFO L421 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:51:37,659 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable198,192 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:51:37,659 INFO L429 AbstractCegarLoop]: === Iteration 200 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:51:37,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:51:37,660 INFO L82 PathProgramCache]: Analyzing trace with hash 1262862869, now seen corresponding path program 166 times [2020-10-11 12:51:37,660 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:51:37,660 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334439785] [2020-10-11 12:51:37,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:51:37,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:51:37,803 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:51:37,803 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334439785] [2020-10-11 12:51:37,803 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1531153263] [2020-10-11 12:51:37,803 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 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 [2020-10-11 12:51:37,844 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-11 12:51:37,844 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:51:37,845 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:51:37,846 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:51:38,116 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-11 12:51:38,180 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:51:38,180 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:51:38,181 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:51:38,181 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615611282] [2020-10-11 12:51:38,181 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:51:38,181 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:51:38,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:51:38,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=185, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:51:38,182 INFO L87 Difference]: Start difference. First operand 167 states and 416 transitions. Second operand 17 states. [2020-10-11 12:51:39,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:51:39,379 INFO L93 Difference]: Finished difference Result 256 states and 613 transitions. [2020-10-11 12:51:39,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-11 12:51:39,381 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-11 12:51:39,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:51:39,382 INFO L225 Difference]: With dead ends: 256 [2020-10-11 12:51:39,382 INFO L226 Difference]: Without dead ends: 251 [2020-10-11 12:51:39,382 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 303 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=408, Invalid=852, Unknown=0, NotChecked=0, Total=1260 [2020-10-11 12:51:39,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2020-10-11 12:51:39,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 167. [2020-10-11 12:51:39,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2020-10-11 12:51:39,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 416 transitions. [2020-10-11 12:51:39,385 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 416 transitions. Word has length 14 [2020-10-11 12:51:39,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:51:39,385 INFO L481 AbstractCegarLoop]: Abstraction has 167 states and 416 transitions. [2020-10-11 12:51:39,385 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:51:39,385 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 416 transitions. [2020-10-11 12:51:39,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:51:39,386 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:51:39,386 INFO L421 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:51:39,586 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 193 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable199 [2020-10-11 12:51:39,587 INFO L429 AbstractCegarLoop]: === Iteration 201 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:51:39,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:51:39,587 INFO L82 PathProgramCache]: Analyzing trace with hash 1262863830, now seen corresponding path program 167 times [2020-10-11 12:51:39,588 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:51:39,588 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301502786] [2020-10-11 12:51:39,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:51:39,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:51:39,721 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:51:39,721 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301502786] [2020-10-11 12:51:39,721 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [805154391] [2020-10-11 12:51:39,722 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 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 [2020-10-11 12:51:39,761 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-11 12:51:39,761 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:51:39,762 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:51:39,762 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:51:40,065 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-11 12:51:40,072 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-11 12:51:40,078 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-11 12:51:42,138 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:51:42,139 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:51:42,139 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 16 [2020-10-11 12:51:42,139 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533790148] [2020-10-11 12:51:42,140 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-11 12:51:42,140 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:51:42,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-11 12:51:42,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=216, Unknown=1, NotChecked=0, Total=306 [2020-10-11 12:51:42,140 INFO L87 Difference]: Start difference. First operand 167 states and 416 transitions. Second operand 18 states. [2020-10-11 12:51:47,175 WARN L193 SmtUtils]: Spent 4.10 s on a formula simplification. DAG size of input: 46 DAG size of output: 39 [2020-10-11 12:51:49,335 WARN L193 SmtUtils]: Spent 2.05 s on a formula simplification that was a NOOP. DAG size: 42 [2020-10-11 12:51:55,857 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 31 [2020-10-11 12:52:06,085 WARN L193 SmtUtils]: Spent 2.05 s on a formula simplification that was a NOOP. DAG size: 39 [2020-10-11 12:52:26,812 WARN L193 SmtUtils]: Spent 4.10 s on a formula simplification. DAG size of input: 46 DAG size of output: 42 [2020-10-11 12:53:26,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:53:26,104 INFO L93 Difference]: Finished difference Result 311 states and 731 transitions. [2020-10-11 12:53:26,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-11 12:53:26,106 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 14 [2020-10-11 12:53:26,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:53:26,107 INFO L225 Difference]: With dead ends: 311 [2020-10-11 12:53:26,107 INFO L226 Difference]: Without dead ends: 306 [2020-10-11 12:53:26,108 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 455 ImplicationChecksByTransitivity, 47.0s TimeCoverageRelationStatistics Valid=499, Invalid=1207, Unknown=16, NotChecked=0, Total=1722 [2020-10-11 12:53:26,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2020-10-11 12:53:26,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 165. [2020-10-11 12:53:26,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2020-10-11 12:53:26,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 409 transitions. [2020-10-11 12:53:26,111 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 409 transitions. Word has length 14 [2020-10-11 12:53:26,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:53:26,111 INFO L481 AbstractCegarLoop]: Abstraction has 165 states and 409 transitions. [2020-10-11 12:53:26,111 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-11 12:53:26,111 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 409 transitions. [2020-10-11 12:53:26,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:53:26,112 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:53:26,112 INFO L421 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:53:26,312 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 194 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable200 [2020-10-11 12:53:26,313 INFO L429 AbstractCegarLoop]: === Iteration 202 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:53:26,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:53:26,313 INFO L82 PathProgramCache]: Analyzing trace with hash 1262871301, now seen corresponding path program 168 times [2020-10-11 12:53:26,313 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:53:26,314 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624390871] [2020-10-11 12:53:26,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:53:26,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:53:26,476 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:53:26,477 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624390871] [2020-10-11 12:53:26,477 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1329104952] [2020-10-11 12:53:26,477 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 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 [2020-10-11 12:53:26,517 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-10-11 12:53:26,518 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:53:26,518 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:53:26,519 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:53:29,036 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:53:29,036 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:53:29,037 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:53:29,037 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848585278] [2020-10-11 12:53:29,037 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:53:29,037 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:53:29,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:53:29,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=196, Unknown=1, NotChecked=0, Total=272 [2020-10-11 12:53:29,037 INFO L87 Difference]: Start difference. First operand 165 states and 409 transitions. Second operand 17 states. [2020-10-11 12:53:33,527 WARN L193 SmtUtils]: Spent 4.10 s on a formula simplification. DAG size of input: 38 DAG size of output: 34 [2020-10-11 12:53:37,817 WARN L193 SmtUtils]: Spent 4.10 s on a formula simplification. DAG size of input: 41 DAG size of output: 37 [2020-10-11 12:53:38,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:53:38,642 INFO L93 Difference]: Finished difference Result 271 states and 639 transitions. [2020-10-11 12:53:38,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-11 12:53:38,644 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-11 12:53:38,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:53:38,645 INFO L225 Difference]: With dead ends: 271 [2020-10-11 12:53:38,645 INFO L226 Difference]: Without dead ends: 269 [2020-10-11 12:53:38,646 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 294 ImplicationChecksByTransitivity, 11.8s TimeCoverageRelationStatistics Valid=348, Invalid=841, Unknown=1, NotChecked=0, Total=1190 [2020-10-11 12:53:38,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2020-10-11 12:53:38,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 167. [2020-10-11 12:53:38,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2020-10-11 12:53:38,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 416 transitions. [2020-10-11 12:53:38,649 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 416 transitions. Word has length 14 [2020-10-11 12:53:38,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:53:38,649 INFO L481 AbstractCegarLoop]: Abstraction has 167 states and 416 transitions. [2020-10-11 12:53:38,650 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:53:38,650 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 416 transitions. [2020-10-11 12:53:38,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:53:38,650 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:53:38,650 INFO L421 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:53:38,857 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 195 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable201 [2020-10-11 12:53:38,858 INFO L429 AbstractCegarLoop]: === Iteration 203 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:53:38,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:53:38,858 INFO L82 PathProgramCache]: Analyzing trace with hash 1262892660, now seen corresponding path program 169 times [2020-10-11 12:53:38,858 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:53:38,859 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962941400] [2020-10-11 12:53:38,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:53:38,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:53:39,005 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:53:39,006 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962941400] [2020-10-11 12:53:39,006 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [566692180] [2020-10-11 12:53:39,006 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 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 [2020-10-11 12:53:39,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:53:39,045 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:53:39,046 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:53:47,022 WARN L193 SmtUtils]: Spent 382.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2020-10-11 12:53:47,029 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-11 12:53:47,035 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-11 12:53:47,107 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:53:47,107 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:53:47,107 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:53:47,108 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942529445] [2020-10-11 12:53:47,108 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:53:47,108 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:53:47,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:53:47,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=182, Unknown=3, NotChecked=0, Total=272 [2020-10-11 12:53:47,108 INFO L87 Difference]: Start difference. First operand 167 states and 416 transitions. Second operand 17 states. [2020-10-11 12:53:51,539 WARN L193 SmtUtils]: Spent 4.10 s on a formula simplification. DAG size of input: 38 DAG size of output: 34 [2020-10-11 12:53:55,900 WARN L193 SmtUtils]: Spent 4.11 s on a formula simplification. DAG size of input: 43 DAG size of output: 37 [2020-10-11 12:54:10,519 WARN L193 SmtUtils]: Spent 3.05 s on a formula simplification. DAG size of input: 31 DAG size of output: 29 [2020-10-11 12:54:17,377 WARN L193 SmtUtils]: Spent 2.22 s on a formula simplification. DAG size of input: 34 DAG size of output: 32 [2020-10-11 12:54:35,133 WARN L193 SmtUtils]: Spent 1.89 s on a formula simplification. DAG size of input: 31 DAG size of output: 29 [2020-10-11 12:54:37,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:54:37,349 INFO L93 Difference]: Finished difference Result 299 states and 714 transitions. [2020-10-11 12:54:37,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-11 12:54:37,351 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-11 12:54:37,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:54:37,352 INFO L225 Difference]: With dead ends: 299 [2020-10-11 12:54:37,352 INFO L226 Difference]: Without dead ends: 291 [2020-10-11 12:54:37,353 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 351 ImplicationChecksByTransitivity, 38.7s TimeCoverageRelationStatistics Valid=434, Invalid=962, Unknown=10, NotChecked=0, Total=1406 [2020-10-11 12:54:37,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2020-10-11 12:54:37,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 168. [2020-10-11 12:54:37,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168 states. [2020-10-11 12:54:37,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 421 transitions. [2020-10-11 12:54:37,357 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 421 transitions. Word has length 14 [2020-10-11 12:54:37,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:54:37,357 INFO L481 AbstractCegarLoop]: Abstraction has 168 states and 421 transitions. [2020-10-11 12:54:37,357 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:54:37,357 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 421 transitions. [2020-10-11 12:54:37,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:54:37,358 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:54:37,358 INFO L421 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:54:37,558 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 196 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable202 [2020-10-11 12:54:37,559 INFO L429 AbstractCegarLoop]: === Iteration 204 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:54:37,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:54:37,559 INFO L82 PathProgramCache]: Analyzing trace with hash 1262893621, now seen corresponding path program 170 times [2020-10-11 12:54:37,560 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:54:37,560 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032639859] [2020-10-11 12:54:37,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:54:37,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:54:37,741 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:54:37,741 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032639859] [2020-10-11 12:54:37,741 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2139600886] [2020-10-11 12:54:37,742 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 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 [2020-10-11 12:54:37,783 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-11 12:54:37,783 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:54:37,784 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:54:37,784 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:54:40,173 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-11 12:54:40,246 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:54:40,246 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:54:40,247 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:54:40,247 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068872938] [2020-10-11 12:54:40,247 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:54:40,247 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:54:40,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:54:40,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=189, Unknown=1, NotChecked=0, Total=272 [2020-10-11 12:54:40,247 INFO L87 Difference]: Start difference. First operand 168 states and 421 transitions. Second operand 17 states. [2020-10-11 12:54:42,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:54:42,651 INFO L93 Difference]: Finished difference Result 292 states and 701 transitions. [2020-10-11 12:54:42,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-11 12:54:42,653 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-11 12:54:42,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:54:42,654 INFO L225 Difference]: With dead ends: 292 [2020-10-11 12:54:42,655 INFO L226 Difference]: Without dead ends: 284 [2020-10-11 12:54:42,655 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 365 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=425, Invalid=980, Unknown=1, NotChecked=0, Total=1406 [2020-10-11 12:54:42,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2020-10-11 12:54:42,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 162. [2020-10-11 12:54:42,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-10-11 12:54:42,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 403 transitions. [2020-10-11 12:54:42,659 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 403 transitions. Word has length 14 [2020-10-11 12:54:42,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:54:42,659 INFO L481 AbstractCegarLoop]: Abstraction has 162 states and 403 transitions. [2020-10-11 12:54:42,659 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:54:42,659 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 403 transitions. [2020-10-11 12:54:42,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:54:42,659 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:54:42,659 INFO L421 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:54:42,860 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 197 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable203 [2020-10-11 12:54:42,860 INFO L429 AbstractCegarLoop]: === Iteration 205 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:54:42,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:54:42,861 INFO L82 PathProgramCache]: Analyzing trace with hash 1263101941, now seen corresponding path program 171 times [2020-10-11 12:54:42,861 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:54:42,861 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769396522] [2020-10-11 12:54:42,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:54:42,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:54:43,043 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:54:43,043 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769396522] [2020-10-11 12:54:43,043 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2065364895] [2020-10-11 12:54:43,044 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 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 [2020-10-11 12:54:43,094 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-11 12:54:43,094 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:54:43,095 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:54:43,096 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:54:43,555 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:54:43,556 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:54:43,556 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:54:43,556 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780342466] [2020-10-11 12:54:43,556 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:54:43,556 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:54:43,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:54:43,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:54:43,556 INFO L87 Difference]: Start difference. First operand 162 states and 403 transitions. Second operand 17 states. [2020-10-11 12:54:44,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:54:44,407 INFO L93 Difference]: Finished difference Result 231 states and 545 transitions. [2020-10-11 12:54:44,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-11 12:54:44,409 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-11 12:54:44,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:54:44,410 INFO L225 Difference]: With dead ends: 231 [2020-10-11 12:54:44,410 INFO L226 Difference]: Without dead ends: 229 [2020-10-11 12:54:44,411 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=202, Invalid=500, Unknown=0, NotChecked=0, Total=702 [2020-10-11 12:54:44,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2020-10-11 12:54:44,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 162. [2020-10-11 12:54:44,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-10-11 12:54:44,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 403 transitions. [2020-10-11 12:54:44,414 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 403 transitions. Word has length 14 [2020-10-11 12:54:44,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:54:44,414 INFO L481 AbstractCegarLoop]: Abstraction has 162 states and 403 transitions. [2020-10-11 12:54:44,414 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:54:44,414 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 403 transitions. [2020-10-11 12:54:44,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:54:44,415 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:54:44,415 INFO L421 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:54:44,615 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 198 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable204 [2020-10-11 12:54:44,616 INFO L429 AbstractCegarLoop]: === Iteration 206 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:54:44,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:54:44,616 INFO L82 PathProgramCache]: Analyzing trace with hash 1263765031, now seen corresponding path program 172 times [2020-10-11 12:54:44,617 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:54:44,617 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654710704] [2020-10-11 12:54:44,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:54:44,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:54:44,779 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:54:44,779 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654710704] [2020-10-11 12:54:44,779 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [778866599] [2020-10-11 12:54:44,780 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 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 [2020-10-11 12:54:44,826 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-11 12:54:44,827 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:54:44,827 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:54:44,828 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:54:45,233 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:54:45,233 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:54:45,233 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:54:45,233 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204112552] [2020-10-11 12:54:45,233 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:54:45,234 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:54:45,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:54:45,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:54:45,234 INFO L87 Difference]: Start difference. First operand 162 states and 403 transitions. Second operand 17 states. [2020-10-11 12:54:46,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:54:46,442 INFO L93 Difference]: Finished difference Result 250 states and 594 transitions. [2020-10-11 12:54:46,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-11 12:54:46,444 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-11 12:54:46,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:54:46,445 INFO L225 Difference]: With dead ends: 250 [2020-10-11 12:54:46,445 INFO L226 Difference]: Without dead ends: 248 [2020-10-11 12:54:46,445 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=300, Invalid=692, Unknown=0, NotChecked=0, Total=992 [2020-10-11 12:54:46,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2020-10-11 12:54:46,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 163. [2020-10-11 12:54:46,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-10-11 12:54:46,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 405 transitions. [2020-10-11 12:54:46,449 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 405 transitions. Word has length 14 [2020-10-11 12:54:46,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:54:46,449 INFO L481 AbstractCegarLoop]: Abstraction has 163 states and 405 transitions. [2020-10-11 12:54:46,449 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:54:46,450 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 405 transitions. [2020-10-11 12:54:46,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:54:46,450 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:54:46,450 INFO L421 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:54:46,650 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable205,199 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:54:46,651 INFO L429 AbstractCegarLoop]: === Iteration 207 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:54:46,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:54:46,651 INFO L82 PathProgramCache]: Analyzing trace with hash 1263787351, now seen corresponding path program 173 times [2020-10-11 12:54:46,652 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:54:46,652 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595171813] [2020-10-11 12:54:46,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:54:46,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:54:46,824 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:54:46,825 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595171813] [2020-10-11 12:54:46,825 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [322358092] [2020-10-11 12:54:46,825 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 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 [2020-10-11 12:54:46,865 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-11 12:54:46,865 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:54:46,866 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:54:46,866 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:54:47,331 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-11 12:54:47,375 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:54:47,375 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:54:47,376 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:54:47,376 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734354138] [2020-10-11 12:54:47,376 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:54:47,376 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:54:47,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:54:47,376 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=188, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:54:47,376 INFO L87 Difference]: Start difference. First operand 163 states and 405 transitions. Second operand 17 states. [2020-10-11 12:54:49,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:54:49,421 INFO L93 Difference]: Finished difference Result 288 states and 686 transitions. [2020-10-11 12:54:49,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-11 12:54:49,423 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-11 12:54:49,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:54:49,424 INFO L225 Difference]: With dead ends: 288 [2020-10-11 12:54:49,424 INFO L226 Difference]: Without dead ends: 283 [2020-10-11 12:54:49,424 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 356 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=426, Invalid=980, Unknown=0, NotChecked=0, Total=1406 [2020-10-11 12:54:49,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2020-10-11 12:54:49,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 159. [2020-10-11 12:54:49,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2020-10-11 12:54:49,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 388 transitions. [2020-10-11 12:54:49,427 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 388 transitions. Word has length 14 [2020-10-11 12:54:49,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:54:49,427 INFO L481 AbstractCegarLoop]: Abstraction has 159 states and 388 transitions. [2020-10-11 12:54:49,427 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:54:49,427 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 388 transitions. [2020-10-11 12:54:49,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:54:49,428 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:54:49,428 INFO L421 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:54:49,628 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 200 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable206 [2020-10-11 12:54:49,629 INFO L429 AbstractCegarLoop]: === Iteration 208 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:54:49,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:54:49,629 INFO L82 PathProgramCache]: Analyzing trace with hash 1463267670, now seen corresponding path program 174 times [2020-10-11 12:54:49,629 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:54:49,630 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439709213] [2020-10-11 12:54:49,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:54:49,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:54:49,779 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:54:49,779 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439709213] [2020-10-11 12:54:49,779 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [3051605] [2020-10-11 12:54:49,780 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 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 [2020-10-11 12:54:49,828 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-11 12:54:49,829 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:54:49,830 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:54:49,830 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:54:50,139 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:54:50,139 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:54:50,139 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:54:50,140 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677468146] [2020-10-11 12:54:50,140 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:54:50,140 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:54:50,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:54:50,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:54:50,140 INFO L87 Difference]: Start difference. First operand 159 states and 388 transitions. Second operand 17 states. [2020-10-11 12:54:50,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:54:50,859 INFO L93 Difference]: Finished difference Result 236 states and 544 transitions. [2020-10-11 12:54:50,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-11 12:54:50,861 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-11 12:54:50,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:54:50,861 INFO L225 Difference]: With dead ends: 236 [2020-10-11 12:54:50,862 INFO L226 Difference]: Without dead ends: 234 [2020-10-11 12:54:50,862 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=212, Invalid=544, Unknown=0, NotChecked=0, Total=756 [2020-10-11 12:54:50,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2020-10-11 12:54:50,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 163. [2020-10-11 12:54:50,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-10-11 12:54:50,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 402 transitions. [2020-10-11 12:54:50,866 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 402 transitions. Word has length 14 [2020-10-11 12:54:50,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:54:50,866 INFO L481 AbstractCegarLoop]: Abstraction has 163 states and 402 transitions. [2020-10-11 12:54:50,866 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:54:50,866 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 402 transitions. [2020-10-11 12:54:50,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:54:50,867 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:54:50,867 INFO L421 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:54:51,076 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable207,201 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:54:51,077 INFO L429 AbstractCegarLoop]: === Iteration 209 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:54:51,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:54:51,077 INFO L82 PathProgramCache]: Analyzing trace with hash 1463268631, now seen corresponding path program 175 times [2020-10-11 12:54:51,077 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:54:51,078 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755143329] [2020-10-11 12:54:51,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:54:51,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:54:51,260 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:54:51,261 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755143329] [2020-10-11 12:54:51,261 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1833000355] [2020-10-11 12:54:51,261 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 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 [2020-10-11 12:54:51,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:54:51,309 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:54:51,310 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:54:51,640 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:54:51,641 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:54:51,641 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:54:51,641 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501346222] [2020-10-11 12:54:51,641 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:54:51,641 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:54:51,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:54:51,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:54:51,642 INFO L87 Difference]: Start difference. First operand 163 states and 402 transitions. Second operand 17 states. [2020-10-11 12:54:52,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:54:52,406 INFO L93 Difference]: Finished difference Result 246 states and 565 transitions. [2020-10-11 12:54:52,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-11 12:54:52,408 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-11 12:54:52,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:54:52,409 INFO L225 Difference]: With dead ends: 246 [2020-10-11 12:54:52,409 INFO L226 Difference]: Without dead ends: 244 [2020-10-11 12:54:52,409 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 170 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=209, Invalid=547, Unknown=0, NotChecked=0, Total=756 [2020-10-11 12:54:52,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2020-10-11 12:54:52,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 163. [2020-10-11 12:54:52,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-10-11 12:54:52,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 402 transitions. [2020-10-11 12:54:52,412 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 402 transitions. Word has length 14 [2020-10-11 12:54:52,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:54:52,412 INFO L481 AbstractCegarLoop]: Abstraction has 163 states and 402 transitions. [2020-10-11 12:54:52,412 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:54:52,412 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 402 transitions. [2020-10-11 12:54:52,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:54:52,413 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:54:52,413 INFO L421 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:54:52,613 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable208,202 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:54:52,614 INFO L429 AbstractCegarLoop]: === Iteration 210 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:54:52,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:54:52,614 INFO L82 PathProgramCache]: Analyzing trace with hash 1463297461, now seen corresponding path program 176 times [2020-10-11 12:54:52,615 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:54:52,615 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773262441] [2020-10-11 12:54:52,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:54:52,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:54:52,795 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:54:52,796 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773262441] [2020-10-11 12:54:52,796 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [74185012] [2020-10-11 12:54:52,796 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 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 [2020-10-11 12:54:52,848 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-11 12:54:52,849 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:54:52,850 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:54:52,851 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:54:53,209 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:54:53,210 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:54:53,210 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:54:53,210 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681468634] [2020-10-11 12:54:53,210 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:54:53,210 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:54:53,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:54:53,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:54:53,211 INFO L87 Difference]: Start difference. First operand 163 states and 402 transitions. Second operand 17 states. [2020-10-11 12:54:53,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:54:53,828 INFO L93 Difference]: Finished difference Result 239 states and 554 transitions. [2020-10-11 12:54:53,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-11 12:54:53,830 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-11 12:54:53,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:54:53,831 INFO L225 Difference]: With dead ends: 239 [2020-10-11 12:54:53,831 INFO L226 Difference]: Without dead ends: 237 [2020-10-11 12:54:53,831 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=196, Invalid=506, Unknown=0, NotChecked=0, Total=702 [2020-10-11 12:54:53,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2020-10-11 12:54:53,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 163. [2020-10-11 12:54:53,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-10-11 12:54:53,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 402 transitions. [2020-10-11 12:54:53,835 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 402 transitions. Word has length 14 [2020-10-11 12:54:53,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:54:53,835 INFO L481 AbstractCegarLoop]: Abstraction has 163 states and 402 transitions. [2020-10-11 12:54:53,835 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:54:53,835 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 402 transitions. [2020-10-11 12:54:53,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:54:53,835 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:54:53,835 INFO L421 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:54:54,036 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable209,203 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:54:54,036 INFO L429 AbstractCegarLoop]: === Iteration 211 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:54:54,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:54:54,037 INFO L82 PathProgramCache]: Analyzing trace with hash 1464221943, now seen corresponding path program 177 times [2020-10-11 12:54:54,037 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:54:54,037 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798695945] [2020-10-11 12:54:54,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:54:54,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:54:54,218 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:54:54,219 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798695945] [2020-10-11 12:54:54,219 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [387594498] [2020-10-11 12:54:54,219 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 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 [2020-10-11 12:54:54,261 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-11 12:54:54,262 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:54:54,262 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:54:54,263 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:54:54,592 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:54:54,592 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:54:54,593 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:54:54,593 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249167051] [2020-10-11 12:54:54,593 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:54:54,593 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:54:54,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:54:54,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:54:54,594 INFO L87 Difference]: Start difference. First operand 163 states and 402 transitions. Second operand 17 states. [2020-10-11 12:54:55,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:54:55,192 INFO L93 Difference]: Finished difference Result 229 states and 529 transitions. [2020-10-11 12:54:55,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-11 12:54:55,194 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-11 12:54:55,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:54:55,194 INFO L225 Difference]: With dead ends: 229 [2020-10-11 12:54:55,194 INFO L226 Difference]: Without dead ends: 227 [2020-10-11 12:54:55,194 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=178, Invalid=472, Unknown=0, NotChecked=0, Total=650 [2020-10-11 12:54:55,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2020-10-11 12:54:55,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 161. [2020-10-11 12:54:55,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2020-10-11 12:54:55,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 395 transitions. [2020-10-11 12:54:55,197 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 395 transitions. Word has length 14 [2020-10-11 12:54:55,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:54:55,197 INFO L481 AbstractCegarLoop]: Abstraction has 161 states and 395 transitions. [2020-10-11 12:54:55,197 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:54:55,197 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 395 transitions. [2020-10-11 12:54:55,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:54:55,198 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:54:55,198 INFO L421 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:54:55,398 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 204 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable210 [2020-10-11 12:54:55,399 INFO L429 AbstractCegarLoop]: === Iteration 212 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:54:55,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:54:55,399 INFO L82 PathProgramCache]: Analyzing trace with hash 2100497160, now seen corresponding path program 178 times [2020-10-11 12:54:55,400 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:54:55,400 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106647366] [2020-10-11 12:54:55,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:54:55,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:54:55,550 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:54:55,551 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106647366] [2020-10-11 12:54:55,551 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [966288632] [2020-10-11 12:54:55,551 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 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 [2020-10-11 12:54:55,592 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-11 12:54:55,592 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:54:55,593 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:54:55,593 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:54:55,865 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:54:55,865 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:54:55,865 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:54:55,866 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356243048] [2020-10-11 12:54:55,866 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:54:55,866 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:54:55,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:54:55,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:54:55,867 INFO L87 Difference]: Start difference. First operand 161 states and 395 transitions. Second operand 17 states. [2020-10-11 12:54:57,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:54:57,078 INFO L93 Difference]: Finished difference Result 261 states and 599 transitions. [2020-10-11 12:54:57,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-11 12:54:57,080 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-11 12:54:57,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:54:57,081 INFO L225 Difference]: With dead ends: 261 [2020-10-11 12:54:57,081 INFO L226 Difference]: Without dead ends: 259 [2020-10-11 12:54:57,081 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 321 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=353, Invalid=907, Unknown=0, NotChecked=0, Total=1260 [2020-10-11 12:54:57,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2020-10-11 12:54:57,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 164. [2020-10-11 12:54:57,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2020-10-11 12:54:57,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 406 transitions. [2020-10-11 12:54:57,085 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 406 transitions. Word has length 14 [2020-10-11 12:54:57,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:54:57,085 INFO L481 AbstractCegarLoop]: Abstraction has 164 states and 406 transitions. [2020-10-11 12:54:57,085 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:54:57,085 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 406 transitions. [2020-10-11 12:54:57,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:54:57,086 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:54:57,086 INFO L421 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:54:57,290 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable211,205 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:54:57,291 INFO L429 AbstractCegarLoop]: === Iteration 213 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:54:57,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:54:57,291 INFO L82 PathProgramCache]: Analyzing trace with hash 2100498121, now seen corresponding path program 179 times [2020-10-11 12:54:57,292 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:54:57,292 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403977519] [2020-10-11 12:54:57,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:54:57,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:54:57,494 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:54:57,495 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403977519] [2020-10-11 12:54:57,495 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [782014493] [2020-10-11 12:54:57,495 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 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 [2020-10-11 12:54:57,532 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-11 12:54:57,532 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:54:57,533 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:54:57,534 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:54:57,896 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:54:57,896 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:54:57,896 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:54:57,896 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834355657] [2020-10-11 12:54:57,897 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:54:57,897 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:54:57,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:54:57,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:54:57,897 INFO L87 Difference]: Start difference. First operand 164 states and 406 transitions. Second operand 17 states. [2020-10-11 12:54:59,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:54:59,040 INFO L93 Difference]: Finished difference Result 271 states and 622 transitions. [2020-10-11 12:54:59,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-11 12:54:59,042 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-11 12:54:59,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:54:59,043 INFO L225 Difference]: With dead ends: 271 [2020-10-11 12:54:59,043 INFO L226 Difference]: Without dead ends: 269 [2020-10-11 12:54:59,044 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 246 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=296, Invalid=760, Unknown=0, NotChecked=0, Total=1056 [2020-10-11 12:54:59,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2020-10-11 12:54:59,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 166. [2020-10-11 12:54:59,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states. [2020-10-11 12:54:59,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 413 transitions. [2020-10-11 12:54:59,047 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 413 transitions. Word has length 14 [2020-10-11 12:54:59,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:54:59,055 INFO L481 AbstractCegarLoop]: Abstraction has 166 states and 413 transitions. [2020-10-11 12:54:59,055 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:54:59,056 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 413 transitions. [2020-10-11 12:54:59,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:54:59,056 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:54:59,056 INFO L421 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:54:59,266 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 206 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable212 [2020-10-11 12:54:59,267 INFO L429 AbstractCegarLoop]: === Iteration 214 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:54:59,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:54:59,267 INFO L82 PathProgramCache]: Analyzing trace with hash 2100526951, now seen corresponding path program 180 times [2020-10-11 12:54:59,268 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:54:59,268 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772841211] [2020-10-11 12:54:59,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:54:59,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:54:59,465 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:54:59,465 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772841211] [2020-10-11 12:54:59,465 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1663387502] [2020-10-11 12:54:59,466 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 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 [2020-10-11 12:54:59,506 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-11 12:54:59,506 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:54:59,507 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:54:59,507 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:54:59,767 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:54:59,768 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:54:59,768 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:54:59,768 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206064656] [2020-10-11 12:54:59,768 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:54:59,768 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:54:59,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:54:59,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=210, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:54:59,769 INFO L87 Difference]: Start difference. First operand 166 states and 413 transitions. Second operand 17 states. [2020-10-11 12:55:00,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:55:00,844 INFO L93 Difference]: Finished difference Result 253 states and 588 transitions. [2020-10-11 12:55:00,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-11 12:55:00,846 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-11 12:55:00,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:55:00,847 INFO L225 Difference]: With dead ends: 253 [2020-10-11 12:55:00,847 INFO L226 Difference]: Without dead ends: 251 [2020-10-11 12:55:00,848 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=274, Invalid=718, Unknown=0, NotChecked=0, Total=992 [2020-10-11 12:55:00,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2020-10-11 12:55:00,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 165. [2020-10-11 12:55:00,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2020-10-11 12:55:00,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 410 transitions. [2020-10-11 12:55:00,851 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 410 transitions. Word has length 14 [2020-10-11 12:55:00,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:55:00,851 INFO L481 AbstractCegarLoop]: Abstraction has 165 states and 410 transitions. [2020-10-11 12:55:00,851 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:55:00,851 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 410 transitions. [2020-10-11 12:55:00,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:55:00,852 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:55:00,852 INFO L421 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:55:01,052 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 207 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable213 [2020-10-11 12:55:01,053 INFO L429 AbstractCegarLoop]: === Iteration 215 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:55:01,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:55:01,053 INFO L82 PathProgramCache]: Analyzing trace with hash 2121052950, now seen corresponding path program 181 times [2020-10-11 12:55:01,054 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:55:01,054 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641072793] [2020-10-11 12:55:01,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:55:01,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:55:01,235 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:55:01,236 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641072793] [2020-10-11 12:55:01,236 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [174472826] [2020-10-11 12:55:01,236 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 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 [2020-10-11 12:55:01,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:55:01,274 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:55:01,275 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:55:01,632 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:55:01,632 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:55:01,632 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:55:01,633 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400561192] [2020-10-11 12:55:01,633 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:55:01,633 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:55:01,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:55:01,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:55:01,634 INFO L87 Difference]: Start difference. First operand 165 states and 410 transitions. Second operand 17 states. [2020-10-11 12:55:03,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:55:03,048 INFO L93 Difference]: Finished difference Result 268 states and 622 transitions. [2020-10-11 12:55:03,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-11 12:55:03,051 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-11 12:55:03,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:55:03,051 INFO L225 Difference]: With dead ends: 268 [2020-10-11 12:55:03,052 INFO L226 Difference]: Without dead ends: 266 [2020-10-11 12:55:03,052 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 317 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=395, Invalid=937, Unknown=0, NotChecked=0, Total=1332 [2020-10-11 12:55:03,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2020-10-11 12:55:03,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 167. [2020-10-11 12:55:03,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2020-10-11 12:55:03,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 418 transitions. [2020-10-11 12:55:03,055 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 418 transitions. Word has length 14 [2020-10-11 12:55:03,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:55:03,055 INFO L481 AbstractCegarLoop]: Abstraction has 167 states and 418 transitions. [2020-10-11 12:55:03,055 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:55:03,055 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 418 transitions. [2020-10-11 12:55:03,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:55:03,056 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:55:03,056 INFO L421 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:55:03,256 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable214,208 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:55:03,257 INFO L429 AbstractCegarLoop]: === Iteration 216 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:55:03,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:55:03,257 INFO L82 PathProgramCache]: Analyzing trace with hash 2121053911, now seen corresponding path program 182 times [2020-10-11 12:55:03,258 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:55:03,258 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198716069] [2020-10-11 12:55:03,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:55:03,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:55:03,472 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:55:03,472 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198716069] [2020-10-11 12:55:03,472 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [401568326] [2020-10-11 12:55:03,472 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 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 [2020-10-11 12:55:03,513 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-11 12:55:03,513 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:55:03,515 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:55:03,516 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:55:03,916 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:55:03,916 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:55:03,916 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:55:03,917 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911955006] [2020-10-11 12:55:03,917 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:55:03,917 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:55:03,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:55:03,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:55:03,917 INFO L87 Difference]: Start difference. First operand 167 states and 418 transitions. Second operand 17 states. [2020-10-11 12:55:05,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:55:05,616 INFO L93 Difference]: Finished difference Result 271 states and 630 transitions. [2020-10-11 12:55:05,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-11 12:55:05,619 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-11 12:55:05,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:55:05,620 INFO L225 Difference]: With dead ends: 271 [2020-10-11 12:55:05,620 INFO L226 Difference]: Without dead ends: 269 [2020-10-11 12:55:05,620 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 315 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=361, Invalid=899, Unknown=0, NotChecked=0, Total=1260 [2020-10-11 12:55:05,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2020-10-11 12:55:05,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 169. [2020-10-11 12:55:05,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2020-10-11 12:55:05,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 424 transitions. [2020-10-11 12:55:05,624 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 424 transitions. Word has length 14 [2020-10-11 12:55:05,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:55:05,624 INFO L481 AbstractCegarLoop]: Abstraction has 169 states and 424 transitions. [2020-10-11 12:55:05,624 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:55:05,624 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 424 transitions. [2020-10-11 12:55:05,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:55:05,624 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:55:05,625 INFO L421 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:55:05,825 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 209 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable215 [2020-10-11 12:55:05,825 INFO L429 AbstractCegarLoop]: === Iteration 217 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:55:05,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:55:05,826 INFO L82 PathProgramCache]: Analyzing trace with hash 2121716040, now seen corresponding path program 183 times [2020-10-11 12:55:05,826 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:55:05,826 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605324176] [2020-10-11 12:55:05,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:55:05,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:55:06,039 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:55:06,039 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605324176] [2020-10-11 12:55:06,039 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2083281386] [2020-10-11 12:55:06,039 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 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 [2020-10-11 12:55:06,081 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-11 12:55:06,081 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:55:06,082 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:55:06,083 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:55:06,348 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:55:06,348 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:55:06,349 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:55:06,349 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876602415] [2020-10-11 12:55:06,349 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:55:06,349 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:55:06,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:55:06,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:55:06,350 INFO L87 Difference]: Start difference. First operand 169 states and 424 transitions. Second operand 17 states. [2020-10-11 12:55:07,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:55:07,796 INFO L93 Difference]: Finished difference Result 262 states and 620 transitions. [2020-10-11 12:55:07,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-11 12:55:07,798 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-11 12:55:07,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:55:07,799 INFO L225 Difference]: With dead ends: 262 [2020-10-11 12:55:07,800 INFO L226 Difference]: Without dead ends: 260 [2020-10-11 12:55:07,800 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 329 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=408, Invalid=924, Unknown=0, NotChecked=0, Total=1332 [2020-10-11 12:55:07,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2020-10-11 12:55:07,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 171. [2020-10-11 12:55:07,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2020-10-11 12:55:07,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 431 transitions. [2020-10-11 12:55:07,803 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 431 transitions. Word has length 14 [2020-10-11 12:55:07,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:55:07,804 INFO L481 AbstractCegarLoop]: Abstraction has 171 states and 431 transitions. [2020-10-11 12:55:07,804 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:55:07,804 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 431 transitions. [2020-10-11 12:55:07,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:55:07,804 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:55:07,804 INFO L421 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:55:08,005 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 210 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable216 [2020-10-11 12:55:08,005 INFO L429 AbstractCegarLoop]: === Iteration 218 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:55:08,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:55:08,006 INFO L82 PathProgramCache]: Analyzing trace with hash 2121737399, now seen corresponding path program 184 times [2020-10-11 12:55:08,006 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:55:08,006 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104606751] [2020-10-11 12:55:08,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:55:08,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:55:08,248 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:55:08,248 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104606751] [2020-10-11 12:55:08,248 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [724784784] [2020-10-11 12:55:08,249 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 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 [2020-10-11 12:55:08,291 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-11 12:55:08,291 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:55:08,292 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:55:08,293 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:55:08,633 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-11 12:55:08,658 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:55:08,659 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:55:08,659 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:55:08,659 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177070283] [2020-10-11 12:55:08,659 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:55:08,659 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:55:08,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:55:08,659 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:55:08,660 INFO L87 Difference]: Start difference. First operand 171 states and 431 transitions. Second operand 17 states. [2020-10-11 12:55:10,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:55:10,243 INFO L93 Difference]: Finished difference Result 248 states and 600 transitions. [2020-10-11 12:55:10,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-11 12:55:10,246 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-11 12:55:10,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:55:10,247 INFO L225 Difference]: With dead ends: 248 [2020-10-11 12:55:10,247 INFO L226 Difference]: Without dead ends: 243 [2020-10-11 12:55:10,248 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 346 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=451, Invalid=955, Unknown=0, NotChecked=0, Total=1406 [2020-10-11 12:55:10,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2020-10-11 12:55:10,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 171. [2020-10-11 12:55:10,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2020-10-11 12:55:10,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 431 transitions. [2020-10-11 12:55:10,251 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 431 transitions. Word has length 14 [2020-10-11 12:55:10,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:55:10,251 INFO L481 AbstractCegarLoop]: Abstraction has 171 states and 431 transitions. [2020-10-11 12:55:10,251 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:55:10,252 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 431 transitions. [2020-10-11 12:55:10,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:55:10,252 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:55:10,252 INFO L421 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:55:10,452 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable217,211 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:55:10,453 INFO L429 AbstractCegarLoop]: === Iteration 219 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:55:10,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:55:10,454 INFO L82 PathProgramCache]: Analyzing trace with hash 2121738360, now seen corresponding path program 185 times [2020-10-11 12:55:10,454 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:55:10,454 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819476444] [2020-10-11 12:55:10,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:55:10,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:55:10,696 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:55:10,696 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819476444] [2020-10-11 12:55:10,697 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [986688324] [2020-10-11 12:55:10,697 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 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 [2020-10-11 12:55:10,739 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-11 12:55:10,739 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:55:10,740 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:55:10,741 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:55:11,097 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-11 12:55:11,201 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:55:11,201 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:55:11,202 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:55:11,202 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403426572] [2020-10-11 12:55:11,202 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:55:11,202 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:55:11,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:55:11,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:55:11,203 INFO L87 Difference]: Start difference. First operand 171 states and 431 transitions. Second operand 17 states. [2020-10-11 12:55:13,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:55:13,261 INFO L93 Difference]: Finished difference Result 287 states and 694 transitions. [2020-10-11 12:55:13,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-11 12:55:13,263 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-11 12:55:13,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:55:13,264 INFO L225 Difference]: With dead ends: 287 [2020-10-11 12:55:13,265 INFO L226 Difference]: Without dead ends: 282 [2020-10-11 12:55:13,265 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 424 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=487, Invalid=1153, Unknown=0, NotChecked=0, Total=1640 [2020-10-11 12:55:13,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2020-10-11 12:55:13,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 169. [2020-10-11 12:55:13,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2020-10-11 12:55:13,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 424 transitions. [2020-10-11 12:55:13,268 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 424 transitions. Word has length 14 [2020-10-11 12:55:13,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:55:13,269 INFO L481 AbstractCegarLoop]: Abstraction has 169 states and 424 transitions. [2020-10-11 12:55:13,269 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:55:13,269 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 424 transitions. [2020-10-11 12:55:13,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:55:13,269 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:55:13,269 INFO L421 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:55:13,470 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable218,212 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:55:13,470 INFO L429 AbstractCegarLoop]: === Iteration 220 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:55:13,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:55:13,471 INFO L82 PathProgramCache]: Analyzing trace with hash 2121745831, now seen corresponding path program 186 times [2020-10-11 12:55:13,471 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:55:13,471 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856316550] [2020-10-11 12:55:13,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:55:13,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:55:13,754 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:55:13,755 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856316550] [2020-10-11 12:55:13,755 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1881727210] [2020-10-11 12:55:13,755 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 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 [2020-10-11 12:55:13,829 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-10-11 12:55:13,829 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:55:13,831 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:55:13,832 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:55:14,433 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:55:14,434 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:55:14,434 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:55:14,435 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391753008] [2020-10-11 12:55:14,435 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:55:14,435 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:55:14,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:55:14,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:55:14,436 INFO L87 Difference]: Start difference. First operand 169 states and 424 transitions. Second operand 17 states. [2020-10-11 12:55:16,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:55:16,876 INFO L93 Difference]: Finished difference Result 284 states and 678 transitions. [2020-10-11 12:55:16,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-11 12:55:16,878 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-11 12:55:16,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:55:16,879 INFO L225 Difference]: With dead ends: 284 [2020-10-11 12:55:16,879 INFO L226 Difference]: Without dead ends: 282 [2020-10-11 12:55:16,880 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 392 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=423, Invalid=1059, Unknown=0, NotChecked=0, Total=1482 [2020-10-11 12:55:16,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2020-10-11 12:55:16,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 171. [2020-10-11 12:55:16,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2020-10-11 12:55:16,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 431 transitions. [2020-10-11 12:55:16,883 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 431 transitions. Word has length 14 [2020-10-11 12:55:16,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:55:16,884 INFO L481 AbstractCegarLoop]: Abstraction has 171 states and 431 transitions. [2020-10-11 12:55:16,884 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:55:16,884 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 431 transitions. [2020-10-11 12:55:16,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:55:16,884 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:55:16,884 INFO L421 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:55:17,085 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable219,213 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:55:17,085 INFO L429 AbstractCegarLoop]: === Iteration 221 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:55:17,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:55:17,086 INFO L82 PathProgramCache]: Analyzing trace with hash 2121767190, now seen corresponding path program 187 times [2020-10-11 12:55:17,086 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:55:17,086 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287401] [2020-10-11 12:55:17,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:55:17,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:55:17,261 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:55:17,262 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287401] [2020-10-11 12:55:17,262 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1598360186] [2020-10-11 12:55:17,262 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 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 [2020-10-11 12:55:17,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:55:17,304 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:55:17,305 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:55:17,629 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-11 12:55:17,711 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:55:17,712 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:55:17,712 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:55:17,712 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141630086] [2020-10-11 12:55:17,712 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:55:17,713 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:55:17,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:55:17,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=189, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:55:17,713 INFO L87 Difference]: Start difference. First operand 171 states and 431 transitions. Second operand 17 states. [2020-10-11 12:55:19,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:55:19,986 INFO L93 Difference]: Finished difference Result 289 states and 702 transitions. [2020-10-11 12:55:19,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-11 12:55:19,989 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-11 12:55:19,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:55:19,990 INFO L225 Difference]: With dead ends: 289 [2020-10-11 12:55:19,990 INFO L226 Difference]: Without dead ends: 284 [2020-10-11 12:55:19,991 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 396 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=481, Invalid=1079, Unknown=0, NotChecked=0, Total=1560 [2020-10-11 12:55:19,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2020-10-11 12:55:19,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 172. [2020-10-11 12:55:19,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172 states. [2020-10-11 12:55:19,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 436 transitions. [2020-10-11 12:55:19,995 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 436 transitions. Word has length 14 [2020-10-11 12:55:19,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:55:19,995 INFO L481 AbstractCegarLoop]: Abstraction has 172 states and 436 transitions. [2020-10-11 12:55:19,995 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:55:19,995 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 436 transitions. [2020-10-11 12:55:19,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:55:19,995 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:55:19,996 INFO L421 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:55:20,196 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable220,214 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:55:20,196 INFO L429 AbstractCegarLoop]: === Iteration 222 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:55:20,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:55:20,197 INFO L82 PathProgramCache]: Analyzing trace with hash 2121768151, now seen corresponding path program 188 times [2020-10-11 12:55:20,197 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:55:20,198 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123577403] [2020-10-11 12:55:20,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:55:20,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:55:20,416 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:55:20,416 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123577403] [2020-10-11 12:55:20,416 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [263364792] [2020-10-11 12:55:20,416 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 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 [2020-10-11 12:55:20,458 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-11 12:55:20,458 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:55:20,459 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:55:20,459 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:55:20,758 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-11 12:55:20,797 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:55:20,797 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:55:20,797 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:55:20,798 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17623951] [2020-10-11 12:55:20,798 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:55:20,798 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:55:20,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:55:20,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:55:20,798 INFO L87 Difference]: Start difference. First operand 172 states and 436 transitions. Second operand 17 states. [2020-10-11 12:55:23,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:55:23,069 INFO L93 Difference]: Finished difference Result 312 states and 753 transitions. [2020-10-11 12:55:23,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-11 12:55:23,072 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-11 12:55:23,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:55:23,073 INFO L225 Difference]: With dead ends: 312 [2020-10-11 12:55:23,073 INFO L226 Difference]: Without dead ends: 304 [2020-10-11 12:55:23,073 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 530 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=543, Invalid=1349, Unknown=0, NotChecked=0, Total=1892 [2020-10-11 12:55:23,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2020-10-11 12:55:23,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 165. [2020-10-11 12:55:23,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2020-10-11 12:55:23,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 410 transitions. [2020-10-11 12:55:23,077 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 410 transitions. Word has length 14 [2020-10-11 12:55:23,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:55:23,077 INFO L481 AbstractCegarLoop]: Abstraction has 165 states and 410 transitions. [2020-10-11 12:55:23,077 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:55:23,077 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 410 transitions. [2020-10-11 12:55:23,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:55:23,078 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:55:23,078 INFO L421 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:55:23,278 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable221,215 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:55:23,278 INFO L429 AbstractCegarLoop]: === Iteration 223 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:55:23,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:55:23,279 INFO L82 PathProgramCache]: Analyzing trace with hash 2121976471, now seen corresponding path program 189 times [2020-10-11 12:55:23,279 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:55:23,279 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162801976] [2020-10-11 12:55:23,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:55:23,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:55:23,457 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:55:23,457 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162801976] [2020-10-11 12:55:23,457 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1391125423] [2020-10-11 12:55:23,457 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 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 [2020-10-11 12:55:23,498 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-11 12:55:23,498 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:55:23,499 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:55:23,506 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:55:23,785 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:55:23,785 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:55:23,785 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:55:23,785 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887166369] [2020-10-11 12:55:23,785 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:55:23,785 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:55:23,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:55:23,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:55:23,786 INFO L87 Difference]: Start difference. First operand 165 states and 410 transitions. Second operand 17 states. [2020-10-11 12:55:25,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:55:25,001 INFO L93 Difference]: Finished difference Result 262 states and 617 transitions. [2020-10-11 12:55:25,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-11 12:55:25,002 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-11 12:55:25,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:55:25,003 INFO L225 Difference]: With dead ends: 262 [2020-10-11 12:55:25,003 INFO L226 Difference]: Without dead ends: 260 [2020-10-11 12:55:25,003 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 260 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=314, Invalid=808, Unknown=0, NotChecked=0, Total=1122 [2020-10-11 12:55:25,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2020-10-11 12:55:25,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 167. [2020-10-11 12:55:25,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2020-10-11 12:55:25,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 419 transitions. [2020-10-11 12:55:25,007 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 419 transitions. Word has length 14 [2020-10-11 12:55:25,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:55:25,007 INFO L481 AbstractCegarLoop]: Abstraction has 167 states and 419 transitions. [2020-10-11 12:55:25,007 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:55:25,007 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 419 transitions. [2020-10-11 12:55:25,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:55:25,007 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:55:25,008 INFO L421 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:55:25,215 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 216 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable222 [2020-10-11 12:55:25,215 INFO L429 AbstractCegarLoop]: === Iteration 224 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:55:25,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:55:25,216 INFO L82 PathProgramCache]: Analyzing trace with hash 2122639561, now seen corresponding path program 190 times [2020-10-11 12:55:25,216 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:55:25,216 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755445836] [2020-10-11 12:55:25,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:55:25,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:55:25,413 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:55:25,414 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755445836] [2020-10-11 12:55:25,414 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1901789912] [2020-10-11 12:55:25,414 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 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 [2020-10-11 12:55:25,454 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-11 12:55:25,454 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:55:25,455 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:55:25,456 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:55:25,840 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:55:25,840 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:55:25,840 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:55:25,841 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578002096] [2020-10-11 12:55:25,841 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:55:25,841 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:55:25,841 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:55:25,841 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:55:25,841 INFO L87 Difference]: Start difference. First operand 167 states and 419 transitions. Second operand 17 states. [2020-10-11 12:55:27,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:55:27,409 INFO L93 Difference]: Finished difference Result 271 states and 650 transitions. [2020-10-11 12:55:27,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-11 12:55:27,412 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-11 12:55:27,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:55:27,413 INFO L225 Difference]: With dead ends: 271 [2020-10-11 12:55:27,413 INFO L226 Difference]: Without dead ends: 269 [2020-10-11 12:55:27,413 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 344 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=396, Invalid=936, Unknown=0, NotChecked=0, Total=1332 [2020-10-11 12:55:27,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2020-10-11 12:55:27,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 169. [2020-10-11 12:55:27,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2020-10-11 12:55:27,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 426 transitions. [2020-10-11 12:55:27,416 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 426 transitions. Word has length 14 [2020-10-11 12:55:27,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:55:27,417 INFO L481 AbstractCegarLoop]: Abstraction has 169 states and 426 transitions. [2020-10-11 12:55:27,417 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:55:27,417 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 426 transitions. [2020-10-11 12:55:27,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:55:27,417 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:55:27,417 INFO L421 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:55:27,617 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 217 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable223 [2020-10-11 12:55:27,618 INFO L429 AbstractCegarLoop]: === Iteration 225 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:55:27,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:55:27,619 INFO L82 PathProgramCache]: Analyzing trace with hash 2122660920, now seen corresponding path program 191 times [2020-10-11 12:55:27,619 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:55:27,619 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382726757] [2020-10-11 12:55:27,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:55:27,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:55:27,847 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:55:27,848 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382726757] [2020-10-11 12:55:27,848 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [267599031] [2020-10-11 12:55:27,848 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 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 [2020-10-11 12:55:27,889 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-11 12:55:27,890 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:55:27,891 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:55:27,891 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:55:28,192 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-11 12:55:28,218 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:55:28,218 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:55:28,219 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:55:28,219 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729292211] [2020-10-11 12:55:28,219 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:55:28,219 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:55:28,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:55:28,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:55:28,219 INFO L87 Difference]: Start difference. First operand 169 states and 426 transitions. Second operand 17 states. [2020-10-11 12:55:30,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:55:30,150 INFO L93 Difference]: Finished difference Result 296 states and 714 transitions. [2020-10-11 12:55:30,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-11 12:55:30,153 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-11 12:55:30,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:55:30,154 INFO L225 Difference]: With dead ends: 296 [2020-10-11 12:55:30,154 INFO L226 Difference]: Without dead ends: 288 [2020-10-11 12:55:30,154 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 538 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=559, Invalid=1333, Unknown=0, NotChecked=0, Total=1892 [2020-10-11 12:55:30,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2020-10-11 12:55:30,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 171. [2020-10-11 12:55:30,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2020-10-11 12:55:30,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 436 transitions. [2020-10-11 12:55:30,158 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 436 transitions. Word has length 14 [2020-10-11 12:55:30,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:55:30,158 INFO L481 AbstractCegarLoop]: Abstraction has 171 states and 436 transitions. [2020-10-11 12:55:30,158 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:55:30,158 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 436 transitions. [2020-10-11 12:55:30,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:55:30,159 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:55:30,159 INFO L421 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:55:30,359 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 218 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable224 [2020-10-11 12:55:30,360 INFO L429 AbstractCegarLoop]: === Iteration 226 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:55:30,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:55:30,360 INFO L82 PathProgramCache]: Analyzing trace with hash 2122661881, now seen corresponding path program 192 times [2020-10-11 12:55:30,360 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:55:30,361 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369971452] [2020-10-11 12:55:30,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:55:30,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:55:30,586 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:55:30,586 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369971452] [2020-10-11 12:55:30,586 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [353284108] [2020-10-11 12:55:30,586 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 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 [2020-10-11 12:55:30,629 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-11 12:55:30,630 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:55:30,631 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:55:30,631 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:55:30,943 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-11 12:55:30,968 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:55:30,969 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:55:30,969 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:55:30,969 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352733595] [2020-10-11 12:55:30,969 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:55:30,970 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:55:30,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:55:30,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=189, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:55:30,970 INFO L87 Difference]: Start difference. First operand 171 states and 436 transitions. Second operand 17 states. [2020-10-11 12:55:32,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:55:32,754 INFO L93 Difference]: Finished difference Result 298 states and 732 transitions. [2020-10-11 12:55:32,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-11 12:55:32,757 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-11 12:55:32,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:55:32,758 INFO L225 Difference]: With dead ends: 298 [2020-10-11 12:55:32,759 INFO L226 Difference]: Without dead ends: 290 [2020-10-11 12:55:32,759 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 429 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=483, Invalid=1157, Unknown=0, NotChecked=0, Total=1640 [2020-10-11 12:55:32,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2020-10-11 12:55:32,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 169. [2020-10-11 12:55:32,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2020-10-11 12:55:32,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 429 transitions. [2020-10-11 12:55:32,762 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 429 transitions. Word has length 14 [2020-10-11 12:55:32,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:55:32,763 INFO L481 AbstractCegarLoop]: Abstraction has 169 states and 429 transitions. [2020-10-11 12:55:32,763 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:55:32,763 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 429 transitions. [2020-10-11 12:55:32,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:55:32,763 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:55:32,763 INFO L421 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:55:32,964 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 219 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable225 [2020-10-11 12:55:32,964 INFO L429 AbstractCegarLoop]: === Iteration 227 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:55:32,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:55:32,965 INFO L82 PathProgramCache]: Analyzing trace with hash 2122690711, now seen corresponding path program 193 times [2020-10-11 12:55:32,965 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:55:32,965 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156698003] [2020-10-11 12:55:32,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:55:32,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:55:33,210 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:55:33,211 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156698003] [2020-10-11 12:55:33,211 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1226088945] [2020-10-11 12:55:33,211 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 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 [2020-10-11 12:55:33,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:55:33,252 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:55:33,253 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:55:33,565 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-11 12:55:33,592 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:55:33,593 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:55:33,593 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:55:33,593 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104819080] [2020-10-11 12:55:33,593 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:55:33,593 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:55:33,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:55:33,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:55:33,594 INFO L87 Difference]: Start difference. First operand 169 states and 429 transitions. Second operand 17 states. [2020-10-11 12:55:35,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:55:35,521 INFO L93 Difference]: Finished difference Result 291 states and 709 transitions. [2020-10-11 12:55:35,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-11 12:55:35,525 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-11 12:55:35,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:55:35,526 INFO L225 Difference]: With dead ends: 291 [2020-10-11 12:55:35,526 INFO L226 Difference]: Without dead ends: 283 [2020-10-11 12:55:35,526 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 444 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=480, Invalid=1160, Unknown=0, NotChecked=0, Total=1640 [2020-10-11 12:55:35,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2020-10-11 12:55:35,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 167. [2020-10-11 12:55:35,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2020-10-11 12:55:35,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 419 transitions. [2020-10-11 12:55:35,532 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 419 transitions. Word has length 14 [2020-10-11 12:55:35,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:55:35,532 INFO L481 AbstractCegarLoop]: Abstraction has 167 states and 419 transitions. [2020-10-11 12:55:35,532 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:55:35,532 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 419 transitions. [2020-10-11 12:55:35,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:55:35,533 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:55:35,533 INFO L421 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:55:35,733 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 220 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable226 [2020-10-11 12:55:35,734 INFO L429 AbstractCegarLoop]: === Iteration 228 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:55:35,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:55:35,735 INFO L82 PathProgramCache]: Analyzing trace with hash -2145285195, now seen corresponding path program 194 times [2020-10-11 12:55:35,735 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:55:35,735 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008294021] [2020-10-11 12:55:35,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:55:35,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:55:35,984 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:55:35,984 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008294021] [2020-10-11 12:55:35,984 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1699360943] [2020-10-11 12:55:35,984 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 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 [2020-10-11 12:55:36,026 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-11 12:55:36,026 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:55:36,027 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:55:36,028 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:55:36,514 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:55:36,515 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:55:36,515 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:55:36,515 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898247060] [2020-10-11 12:55:36,515 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:55:36,515 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:55:36,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:55:36,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=207, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:55:36,516 INFO L87 Difference]: Start difference. First operand 167 states and 419 transitions. Second operand 17 states. [2020-10-11 12:55:38,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:55:38,492 INFO L93 Difference]: Finished difference Result 265 states and 622 transitions. [2020-10-11 12:55:38,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-11 12:55:38,495 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-11 12:55:38,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:55:38,496 INFO L225 Difference]: With dead ends: 265 [2020-10-11 12:55:38,496 INFO L226 Difference]: Without dead ends: 263 [2020-10-11 12:55:38,496 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 321 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=361, Invalid=899, Unknown=0, NotChecked=0, Total=1260 [2020-10-11 12:55:38,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2020-10-11 12:55:38,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 167. [2020-10-11 12:55:38,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2020-10-11 12:55:38,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 419 transitions. [2020-10-11 12:55:38,506 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 419 transitions. Word has length 14 [2020-10-11 12:55:38,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:55:38,506 INFO L481 AbstractCegarLoop]: Abstraction has 167 states and 419 transitions. [2020-10-11 12:55:38,506 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:55:38,506 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 419 transitions. [2020-10-11 12:55:38,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:55:38,507 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:55:38,507 INFO L421 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:55:38,707 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable227,221 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:55:38,708 INFO L429 AbstractCegarLoop]: === Iteration 229 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:55:38,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:55:38,708 INFO L82 PathProgramCache]: Analyzing trace with hash -2144622105, now seen corresponding path program 195 times [2020-10-11 12:55:38,709 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:55:38,709 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551066666] [2020-10-11 12:55:38,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:55:38,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:55:38,955 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:55:38,955 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551066666] [2020-10-11 12:55:38,956 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [844239087] [2020-10-11 12:55:38,956 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 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 [2020-10-11 12:55:38,998 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-11 12:55:38,999 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:55:38,999 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:55:39,000 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:55:39,484 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:55:39,484 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:55:39,484 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:55:39,484 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856333384] [2020-10-11 12:55:39,485 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:55:39,485 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:55:39,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:55:39,485 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:55:39,485 INFO L87 Difference]: Start difference. First operand 167 states and 419 transitions. Second operand 17 states. [2020-10-11 12:55:41,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:55:41,842 INFO L93 Difference]: Finished difference Result 262 states and 627 transitions. [2020-10-11 12:55:41,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-11 12:55:41,846 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-11 12:55:41,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:55:41,847 INFO L225 Difference]: With dead ends: 262 [2020-10-11 12:55:41,847 INFO L226 Difference]: Without dead ends: 260 [2020-10-11 12:55:41,848 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 423 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=448, Invalid=1112, Unknown=0, NotChecked=0, Total=1560 [2020-10-11 12:55:41,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2020-10-11 12:55:41,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 169. [2020-10-11 12:55:41,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2020-10-11 12:55:41,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 426 transitions. [2020-10-11 12:55:41,852 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 426 transitions. Word has length 14 [2020-10-11 12:55:41,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:55:41,852 INFO L481 AbstractCegarLoop]: Abstraction has 169 states and 426 transitions. [2020-10-11 12:55:41,852 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:55:41,852 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 426 transitions. [2020-10-11 12:55:41,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:55:41,852 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:55:41,853 INFO L421 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:55:42,053 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 222 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable228 [2020-10-11 12:55:42,054 INFO L429 AbstractCegarLoop]: === Iteration 230 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:55:42,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:55:42,054 INFO L82 PathProgramCache]: Analyzing trace with hash -2144599785, now seen corresponding path program 196 times [2020-10-11 12:55:42,054 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:55:42,055 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543309939] [2020-10-11 12:55:42,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:55:42,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:55:42,322 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:55:42,322 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543309939] [2020-10-11 12:55:42,322 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1973815399] [2020-10-11 12:55:42,323 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 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 [2020-10-11 12:55:42,366 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-11 12:55:42,367 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:55:42,368 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:55:42,368 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:55:42,795 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-11 12:55:42,858 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:55:42,859 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:55:42,859 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:55:42,859 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166733503] [2020-10-11 12:55:42,859 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:55:42,859 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:55:42,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:55:42,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:55:42,860 INFO L87 Difference]: Start difference. First operand 169 states and 426 transitions. Second operand 17 states. [2020-10-11 12:55:46,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:55:46,373 INFO L93 Difference]: Finished difference Result 285 states and 688 transitions. [2020-10-11 12:55:46,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-11 12:55:46,377 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-11 12:55:46,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:55:46,378 INFO L225 Difference]: With dead ends: 285 [2020-10-11 12:55:46,378 INFO L226 Difference]: Without dead ends: 280 [2020-10-11 12:55:46,378 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 562 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=587, Invalid=1393, Unknown=0, NotChecked=0, Total=1980 [2020-10-11 12:55:46,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2020-10-11 12:55:46,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 167. [2020-10-11 12:55:46,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2020-10-11 12:55:46,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 419 transitions. [2020-10-11 12:55:46,382 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 419 transitions. Word has length 14 [2020-10-11 12:55:46,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:55:46,382 INFO L481 AbstractCegarLoop]: Abstraction has 167 states and 419 transitions. [2020-10-11 12:55:46,383 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:55:46,383 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 419 transitions. [2020-10-11 12:55:46,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:55:46,383 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:55:46,383 INFO L421 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:55:46,584 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable229,223 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:55:46,584 INFO L429 AbstractCegarLoop]: === Iteration 231 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:55:46,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:55:46,585 INFO L82 PathProgramCache]: Analyzing trace with hash -2144570955, now seen corresponding path program 197 times [2020-10-11 12:55:46,585 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:55:46,585 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934933343] [2020-10-11 12:55:46,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:55:46,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:55:46,859 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:55:46,859 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934933343] [2020-10-11 12:55:46,860 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [20603875] [2020-10-11 12:55:46,860 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 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 [2020-10-11 12:55:46,904 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-11 12:55:46,904 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:55:46,905 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:55:46,906 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:55:51,554 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-11 12:55:55,691 WARN L193 SmtUtils]: Spent 2.09 s on a formula simplification. DAG size of input: 42 DAG size of output: 19 [2020-10-11 12:55:55,694 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:55:55,694 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:55:55,694 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 16 [2020-10-11 12:55:55,694 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628672476] [2020-10-11 12:55:55,695 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-11 12:55:55,695 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:55:55,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-11 12:55:55,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=220, Unknown=3, NotChecked=0, Total=306 [2020-10-11 12:55:55,696 INFO L87 Difference]: Start difference. First operand 167 states and 419 transitions. Second operand 18 states. [2020-10-11 12:55:59,985 WARN L193 SmtUtils]: Spent 4.13 s on a formula simplification. DAG size of input: 54 DAG size of output: 38 [2020-10-11 12:56:04,796 WARN L193 SmtUtils]: Spent 4.12 s on a formula simplification. DAG size of input: 47 DAG size of output: 37 [2020-10-11 12:56:05,261 WARN L193 SmtUtils]: Spent 348.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 23 [2020-10-11 12:56:08,110 WARN L193 SmtUtils]: Spent 327.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 22 [2020-10-11 12:56:10,446 WARN L193 SmtUtils]: Spent 2.05 s on a formula simplification that was a NOOP. DAG size: 32 [2020-10-11 12:56:35,884 WARN L193 SmtUtils]: Spent 4.10 s on a formula simplification. DAG size of input: 37 DAG size of output: 35 [2020-10-11 12:56:44,436 WARN L193 SmtUtils]: Spent 4.09 s on a formula simplification. DAG size of input: 24 DAG size of output: 22 [2020-10-11 12:57:31,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:57:31,574 INFO L93 Difference]: Finished difference Result 302 states and 718 transitions. [2020-10-11 12:57:31,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-11 12:57:31,577 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 14 [2020-10-11 12:57:31,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:57:31,578 INFO L225 Difference]: With dead ends: 302 [2020-10-11 12:57:31,578 INFO L226 Difference]: Without dead ends: 297 [2020-10-11 12:57:31,578 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 5 SyntacticMatches, 4 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 647 ImplicationChecksByTransitivity, 69.6s TimeCoverageRelationStatistics Valid=556, Invalid=1408, Unknown=16, NotChecked=0, Total=1980 [2020-10-11 12:57:31,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2020-10-11 12:57:31,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 166. [2020-10-11 12:57:31,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states. [2020-10-11 12:57:31,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 414 transitions. [2020-10-11 12:57:31,582 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 414 transitions. Word has length 14 [2020-10-11 12:57:31,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:57:31,582 INFO L481 AbstractCegarLoop]: Abstraction has 166 states and 414 transitions. [2020-10-11 12:57:31,582 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-11 12:57:31,582 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 414 transitions. [2020-10-11 12:57:31,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:57:31,582 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:57:31,582 INFO L421 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:57:31,783 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable230,224 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:57:31,783 INFO L429 AbstractCegarLoop]: === Iteration 232 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:57:31,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:57:31,784 INFO L82 PathProgramCache]: Analyzing trace with hash -2143668793, now seen corresponding path program 198 times [2020-10-11 12:57:31,784 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:57:31,784 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105623229] [2020-10-11 12:57:31,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:57:31,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:57:32,005 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:57:32,005 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105623229] [2020-10-11 12:57:32,006 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [451230273] [2020-10-11 12:57:32,006 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 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 [2020-10-11 12:57:32,053 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-11 12:57:32,054 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:57:32,054 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:57:32,055 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:57:32,422 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:57:32,423 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:57:32,423 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:57:32,423 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247910940] [2020-10-11 12:57:32,423 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:57:32,423 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:57:32,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:57:32,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=203, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:57:32,424 INFO L87 Difference]: Start difference. First operand 166 states and 414 transitions. Second operand 17 states. [2020-10-11 12:57:33,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:57:33,125 INFO L93 Difference]: Finished difference Result 219 states and 516 transitions. [2020-10-11 12:57:33,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-11 12:57:33,126 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-11 12:57:33,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:57:33,127 INFO L225 Difference]: With dead ends: 219 [2020-10-11 12:57:33,127 INFO L226 Difference]: Without dead ends: 217 [2020-10-11 12:57:33,127 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=214, Invalid=488, Unknown=0, NotChecked=0, Total=702 [2020-10-11 12:57:33,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2020-10-11 12:57:33,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 167. [2020-10-11 12:57:33,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2020-10-11 12:57:33,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 416 transitions. [2020-10-11 12:57:33,130 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 416 transitions. Word has length 14 [2020-10-11 12:57:33,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:57:33,130 INFO L481 AbstractCegarLoop]: Abstraction has 167 states and 416 transitions. [2020-10-11 12:57:33,130 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:57:33,130 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 416 transitions. [2020-10-11 12:57:33,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:57:33,131 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:57:33,131 INFO L421 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:57:33,331 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable231,225 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:57:33,332 INFO L429 AbstractCegarLoop]: === Iteration 233 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:57:33,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:57:33,332 INFO L82 PathProgramCache]: Analyzing trace with hash -2143646473, now seen corresponding path program 199 times [2020-10-11 12:57:33,332 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:57:33,333 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134182736] [2020-10-11 12:57:33,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:57:33,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:57:33,564 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:57:33,564 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134182736] [2020-10-11 12:57:33,564 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [25969178] [2020-10-11 12:57:33,564 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 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 [2020-10-11 12:57:33,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:57:33,604 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:57:33,605 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:57:33,923 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-11 12:57:33,961 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:57:33,961 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:57:33,961 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:57:33,961 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340226701] [2020-10-11 12:57:33,962 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:57:33,962 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:57:33,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:57:33,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:57:33,962 INFO L87 Difference]: Start difference. First operand 167 states and 416 transitions. Second operand 17 states. [2020-10-11 12:57:34,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:57:34,969 INFO L93 Difference]: Finished difference Result 229 states and 538 transitions. [2020-10-11 12:57:34,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-11 12:57:34,973 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-11 12:57:34,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:57:34,974 INFO L225 Difference]: With dead ends: 229 [2020-10-11 12:57:34,974 INFO L226 Difference]: Without dead ends: 224 [2020-10-11 12:57:34,975 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 182 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=258, Invalid=554, Unknown=0, NotChecked=0, Total=812 [2020-10-11 12:57:34,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2020-10-11 12:57:34,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 158. [2020-10-11 12:57:34,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2020-10-11 12:57:34,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 386 transitions. [2020-10-11 12:57:34,979 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 386 transitions. Word has length 14 [2020-10-11 12:57:34,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:57:34,979 INFO L481 AbstractCegarLoop]: Abstraction has 158 states and 386 transitions. [2020-10-11 12:57:34,979 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:57:34,980 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 386 transitions. [2020-10-11 12:57:34,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:57:34,980 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:57:34,980 INFO L421 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:57:35,186 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 226 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable232 [2020-10-11 12:57:35,187 INFO L429 AbstractCegarLoop]: === Iteration 234 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:57:35,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:57:35,187 INFO L82 PathProgramCache]: Analyzing trace with hash -255670682, now seen corresponding path program 200 times [2020-10-11 12:57:35,187 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:57:35,188 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119348311] [2020-10-11 12:57:35,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:57:35,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:57:35,342 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:57:35,342 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119348311] [2020-10-11 12:57:35,343 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1345666856] [2020-10-11 12:57:35,343 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 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 [2020-10-11 12:57:35,382 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-11 12:57:35,383 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:57:35,384 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:57:35,385 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:57:35,773 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:57:35,773 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:57:35,773 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:57:35,773 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973086377] [2020-10-11 12:57:35,774 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:57:35,774 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:57:35,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:57:35,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:57:35,774 INFO L87 Difference]: Start difference. First operand 158 states and 386 transitions. Second operand 17 states. [2020-10-11 12:57:36,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:57:36,548 INFO L93 Difference]: Finished difference Result 229 states and 528 transitions. [2020-10-11 12:57:36,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-11 12:57:36,551 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-11 12:57:36,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:57:36,552 INFO L225 Difference]: With dead ends: 229 [2020-10-11 12:57:36,552 INFO L226 Difference]: Without dead ends: 227 [2020-10-11 12:57:36,552 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=179, Invalid=421, Unknown=0, NotChecked=0, Total=600 [2020-10-11 12:57:36,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2020-10-11 12:57:36,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 161. [2020-10-11 12:57:36,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2020-10-11 12:57:36,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 395 transitions. [2020-10-11 12:57:36,556 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 395 transitions. Word has length 14 [2020-10-11 12:57:36,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:57:36,556 INFO L481 AbstractCegarLoop]: Abstraction has 161 states and 395 transitions. [2020-10-11 12:57:36,556 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:57:36,556 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 395 transitions. [2020-10-11 12:57:36,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:57:36,556 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:57:36,556 INFO L421 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:57:36,757 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 227 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable233 [2020-10-11 12:57:36,757 INFO L429 AbstractCegarLoop]: === Iteration 235 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:57:36,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:57:36,758 INFO L82 PathProgramCache]: Analyzing trace with hash -255669721, now seen corresponding path program 201 times [2020-10-11 12:57:36,758 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:57:36,758 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022648428] [2020-10-11 12:57:36,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:57:36,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:57:37,031 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:57:37,031 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022648428] [2020-10-11 12:57:37,031 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1331154369] [2020-10-11 12:57:37,031 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 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 [2020-10-11 12:57:37,072 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-11 12:57:37,072 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:57:37,073 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:57:37,073 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:57:37,420 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:57:37,421 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:57:37,421 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:57:37,421 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272034409] [2020-10-11 12:57:37,421 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:57:37,421 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:57:37,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:57:37,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=207, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:57:37,422 INFO L87 Difference]: Start difference. First operand 161 states and 395 transitions. Second operand 17 states. [2020-10-11 12:57:38,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:57:38,291 INFO L93 Difference]: Finished difference Result 237 states and 545 transitions. [2020-10-11 12:57:38,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-11 12:57:38,295 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-11 12:57:38,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:57:38,296 INFO L225 Difference]: With dead ends: 237 [2020-10-11 12:57:38,296 INFO L226 Difference]: Without dead ends: 235 [2020-10-11 12:57:38,296 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=195, Invalid=455, Unknown=0, NotChecked=0, Total=650 [2020-10-11 12:57:38,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2020-10-11 12:57:38,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 160. [2020-10-11 12:57:38,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2020-10-11 12:57:38,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 392 transitions. [2020-10-11 12:57:38,302 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 392 transitions. Word has length 14 [2020-10-11 12:57:38,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:57:38,302 INFO L481 AbstractCegarLoop]: Abstraction has 160 states and 392 transitions. [2020-10-11 12:57:38,302 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:57:38,303 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 392 transitions. [2020-10-11 12:57:38,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:57:38,303 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:57:38,305 INFO L421 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:57:38,508 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 228 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable234 [2020-10-11 12:57:38,509 INFO L429 AbstractCegarLoop]: === Iteration 236 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:57:38,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:57:38,509 INFO L82 PathProgramCache]: Analyzing trace with hash -255640891, now seen corresponding path program 202 times [2020-10-11 12:57:38,509 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:57:38,510 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434094362] [2020-10-11 12:57:38,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:57:38,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:57:38,765 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:57:38,765 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434094362] [2020-10-11 12:57:38,765 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [348338456] [2020-10-11 12:57:38,765 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 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 [2020-10-11 12:57:38,806 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-11 12:57:38,806 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:57:38,807 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:57:38,808 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:57:41,376 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:57:41,376 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:57:41,376 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:57:41,376 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851870010] [2020-10-11 12:57:41,376 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:57:41,377 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:57:41,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:57:41,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:57:41,377 INFO L87 Difference]: Start difference. First operand 160 states and 392 transitions. Second operand 17 states. [2020-10-11 12:57:42,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:57:42,648 INFO L93 Difference]: Finished difference Result 246 states and 562 transitions. [2020-10-11 12:57:42,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-11 12:57:42,649 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-11 12:57:42,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:57:42,650 INFO L225 Difference]: With dead ends: 246 [2020-10-11 12:57:42,650 INFO L226 Difference]: Without dead ends: 244 [2020-10-11 12:57:42,650 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 207 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=254, Invalid=558, Unknown=0, NotChecked=0, Total=812 [2020-10-11 12:57:42,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2020-10-11 12:57:42,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 164. [2020-10-11 12:57:42,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2020-10-11 12:57:42,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 403 transitions. [2020-10-11 12:57:42,653 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 403 transitions. Word has length 14 [2020-10-11 12:57:42,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:57:42,653 INFO L481 AbstractCegarLoop]: Abstraction has 164 states and 403 transitions. [2020-10-11 12:57:42,653 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:57:42,654 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 403 transitions. [2020-10-11 12:57:42,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:57:42,654 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:57:42,654 INFO L421 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:57:42,855 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 229 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable235 [2020-10-11 12:57:42,855 INFO L429 AbstractCegarLoop]: === Iteration 237 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:57:42,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:57:42,856 INFO L82 PathProgramCache]: Analyzing trace with hash -254746200, now seen corresponding path program 203 times [2020-10-11 12:57:42,856 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:57:42,856 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386890881] [2020-10-11 12:57:42,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:57:42,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:57:43,114 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:57:43,114 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386890881] [2020-10-11 12:57:43,115 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1977844971] [2020-10-11 12:57:43,115 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 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 [2020-10-11 12:57:43,157 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-11 12:57:43,157 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:57:43,158 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:57:43,159 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:57:43,583 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:57:43,583 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:57:43,584 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:57:43,584 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747059057] [2020-10-11 12:57:43,584 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:57:43,584 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:57:43,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:57:43,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=203, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:57:43,585 INFO L87 Difference]: Start difference. First operand 164 states and 403 transitions. Second operand 17 states. [2020-10-11 12:57:44,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:57:44,551 INFO L93 Difference]: Finished difference Result 245 states and 560 transitions. [2020-10-11 12:57:44,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-11 12:57:44,555 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-11 12:57:44,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:57:44,556 INFO L225 Difference]: With dead ends: 245 [2020-10-11 12:57:44,556 INFO L226 Difference]: Without dead ends: 243 [2020-10-11 12:57:44,557 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 173 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=222, Invalid=480, Unknown=0, NotChecked=0, Total=702 [2020-10-11 12:57:44,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2020-10-11 12:57:44,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 163. [2020-10-11 12:57:44,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-10-11 12:57:44,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 399 transitions. [2020-10-11 12:57:44,560 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 399 transitions. Word has length 14 [2020-10-11 12:57:44,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:57:44,560 INFO L481 AbstractCegarLoop]: Abstraction has 163 states and 399 transitions. [2020-10-11 12:57:44,560 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:57:44,560 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 399 transitions. [2020-10-11 12:57:44,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:57:44,561 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:57:44,561 INFO L421 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:57:44,761 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 230 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable236 [2020-10-11 12:57:44,762 INFO L429 AbstractCegarLoop]: === Iteration 238 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:57:44,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:57:44,762 INFO L82 PathProgramCache]: Analyzing trace with hash -227041531, now seen corresponding path program 204 times [2020-10-11 12:57:44,763 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:57:44,763 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834022919] [2020-10-11 12:57:44,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:57:44,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:57:45,077 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:57:45,077 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834022919] [2020-10-11 12:57:45,077 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [984651996] [2020-10-11 12:57:45,078 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 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 [2020-10-11 12:57:45,121 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-11 12:57:45,121 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:57:45,123 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:57:45,123 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:57:45,610 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:57:45,611 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:57:45,611 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:57:45,611 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102254631] [2020-10-11 12:57:45,611 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:57:45,611 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:57:45,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:57:45,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:57:45,612 INFO L87 Difference]: Start difference. First operand 163 states and 399 transitions. Second operand 17 states. [2020-10-11 12:57:46,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:57:46,575 INFO L93 Difference]: Finished difference Result 239 states and 549 transitions. [2020-10-11 12:57:46,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-11 12:57:46,579 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-11 12:57:46,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:57:46,580 INFO L225 Difference]: With dead ends: 239 [2020-10-11 12:57:46,580 INFO L226 Difference]: Without dead ends: 237 [2020-10-11 12:57:46,580 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=186, Invalid=414, Unknown=0, NotChecked=0, Total=600 [2020-10-11 12:57:46,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2020-10-11 12:57:46,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 162. [2020-10-11 12:57:46,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-10-11 12:57:46,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 396 transitions. [2020-10-11 12:57:46,583 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 396 transitions. Word has length 14 [2020-10-11 12:57:46,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:57:46,584 INFO L481 AbstractCegarLoop]: Abstraction has 162 states and 396 transitions. [2020-10-11 12:57:46,584 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:57:46,584 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 396 transitions. [2020-10-11 12:57:46,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:57:46,584 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:57:46,584 INFO L421 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:57:46,785 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 231 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable237 [2020-10-11 12:57:46,785 INFO L429 AbstractCegarLoop]: === Iteration 239 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:57:46,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:57:46,786 INFO L82 PathProgramCache]: Analyzing trace with hash -226088219, now seen corresponding path program 205 times [2020-10-11 12:57:46,786 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:57:46,786 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309785372] [2020-10-11 12:57:46,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:57:46,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:57:47,165 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:57:47,166 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309785372] [2020-10-11 12:57:47,166 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [504988437] [2020-10-11 12:57:47,166 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 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 [2020-10-11 12:57:47,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:57:47,210 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:57:47,210 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:57:47,668 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:57:47,669 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:57:47,669 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:57:47,669 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59874413] [2020-10-11 12:57:47,670 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:57:47,670 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:57:47,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:57:47,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:57:47,670 INFO L87 Difference]: Start difference. First operand 162 states and 396 transitions. Second operand 17 states. [2020-10-11 12:57:48,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:57:48,301 INFO L93 Difference]: Finished difference Result 220 states and 508 transitions. [2020-10-11 12:57:48,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-11 12:57:48,306 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-11 12:57:48,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:57:48,306 INFO L225 Difference]: With dead ends: 220 [2020-10-11 12:57:48,306 INFO L226 Difference]: Without dead ends: 218 [2020-10-11 12:57:48,307 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=159, Invalid=347, Unknown=0, NotChecked=0, Total=506 [2020-10-11 12:57:48,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-10-11 12:57:48,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 156. [2020-10-11 12:57:48,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2020-10-11 12:57:48,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 381 transitions. [2020-10-11 12:57:48,310 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 381 transitions. Word has length 14 [2020-10-11 12:57:48,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:57:48,310 INFO L481 AbstractCegarLoop]: Abstraction has 156 states and 381 transitions. [2020-10-11 12:57:48,310 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:57:48,310 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 381 transitions. [2020-10-11 12:57:48,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:57:48,311 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:57:48,311 INFO L421 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:57:48,511 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 232 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable238 [2020-10-11 12:57:48,512 INFO L429 AbstractCegarLoop]: === Iteration 240 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:57:48,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:57:48,512 INFO L82 PathProgramCache]: Analyzing trace with hash -1976392972, now seen corresponding path program 206 times [2020-10-11 12:57:48,513 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:57:48,513 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384745276] [2020-10-11 12:57:48,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:57:48,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:57:48,740 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:57:48,740 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384745276] [2020-10-11 12:57:48,740 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [319118780] [2020-10-11 12:57:48,740 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 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 [2020-10-11 12:57:48,786 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-11 12:57:48,786 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:57:48,787 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:57:48,788 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:57:49,223 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:57:49,224 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:57:49,224 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:57:49,224 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830254714] [2020-10-11 12:57:49,224 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:57:49,224 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:57:49,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:57:49,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:57:49,224 INFO L87 Difference]: Start difference. First operand 156 states and 381 transitions. Second operand 17 states. [2020-10-11 12:57:49,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:57:49,906 INFO L93 Difference]: Finished difference Result 229 states and 528 transitions. [2020-10-11 12:57:49,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-11 12:57:49,910 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-11 12:57:49,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:57:49,910 INFO L225 Difference]: With dead ends: 229 [2020-10-11 12:57:49,911 INFO L226 Difference]: Without dead ends: 227 [2020-10-11 12:57:49,911 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=178, Invalid=472, Unknown=0, NotChecked=0, Total=650 [2020-10-11 12:57:49,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2020-10-11 12:57:49,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 160. [2020-10-11 12:57:49,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2020-10-11 12:57:49,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 395 transitions. [2020-10-11 12:57:49,915 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 395 transitions. Word has length 14 [2020-10-11 12:57:49,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:57:49,915 INFO L481 AbstractCegarLoop]: Abstraction has 160 states and 395 transitions. [2020-10-11 12:57:49,915 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:57:49,915 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 395 transitions. [2020-10-11 12:57:49,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:57:49,915 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:57:49,915 INFO L421 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:57:50,116 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 233 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable239 [2020-10-11 12:57:50,116 INFO L429 AbstractCegarLoop]: === Iteration 241 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:57:50,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:57:50,117 INFO L82 PathProgramCache]: Analyzing trace with hash -1976392011, now seen corresponding path program 207 times [2020-10-11 12:57:50,117 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:57:50,117 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996200753] [2020-10-11 12:57:50,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:57:50,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:57:50,344 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:57:50,345 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996200753] [2020-10-11 12:57:50,345 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1816094490] [2020-10-11 12:57:50,345 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 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 [2020-10-11 12:57:50,387 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-11 12:57:50,387 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:57:50,388 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:57:50,389 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:57:50,859 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:57:50,860 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:57:50,860 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:57:50,860 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283112923] [2020-10-11 12:57:50,860 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:57:50,861 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:57:50,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:57:50,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:57:50,861 INFO L87 Difference]: Start difference. First operand 160 states and 395 transitions. Second operand 17 states. [2020-10-11 12:57:51,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:57:51,755 INFO L93 Difference]: Finished difference Result 233 states and 536 transitions. [2020-10-11 12:57:51,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-11 12:57:51,757 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-11 12:57:51,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:57:51,757 INFO L225 Difference]: With dead ends: 233 [2020-10-11 12:57:51,757 INFO L226 Difference]: Without dead ends: 231 [2020-10-11 12:57:51,758 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=174, Invalid=476, Unknown=0, NotChecked=0, Total=650 [2020-10-11 12:57:51,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2020-10-11 12:57:51,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 159. [2020-10-11 12:57:51,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2020-10-11 12:57:51,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 392 transitions. [2020-10-11 12:57:51,761 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 392 transitions. Word has length 14 [2020-10-11 12:57:51,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:57:51,761 INFO L481 AbstractCegarLoop]: Abstraction has 159 states and 392 transitions. [2020-10-11 12:57:51,761 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:57:51,761 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 392 transitions. [2020-10-11 12:57:51,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:57:51,762 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:57:51,762 INFO L421 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:57:51,962 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable240,234 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:57:51,963 INFO L429 AbstractCegarLoop]: === Iteration 242 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:57:51,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:57:51,963 INFO L82 PathProgramCache]: Analyzing trace with hash -1976363181, now seen corresponding path program 208 times [2020-10-11 12:57:51,964 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:57:51,964 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545132668] [2020-10-11 12:57:51,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:57:51,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:57:52,220 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:57:52,221 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545132668] [2020-10-11 12:57:52,221 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [495429738] [2020-10-11 12:57:52,221 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 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 [2020-10-11 12:57:52,261 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-11 12:57:52,262 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:57:52,262 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:57:52,263 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:57:54,056 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:57:54,057 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:57:54,057 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:57:54,057 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475195360] [2020-10-11 12:57:54,057 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:57:54,057 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:57:54,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:57:54,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:57:54,058 INFO L87 Difference]: Start difference. First operand 159 states and 392 transitions. Second operand 17 states. [2020-10-11 12:57:55,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:57:55,447 INFO L93 Difference]: Finished difference Result 256 states and 582 transitions. [2020-10-11 12:57:55,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-11 12:57:55,451 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-11 12:57:55,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:57:55,451 INFO L225 Difference]: With dead ends: 256 [2020-10-11 12:57:55,451 INFO L226 Difference]: Without dead ends: 254 [2020-10-11 12:57:55,452 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 236 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=259, Invalid=671, Unknown=0, NotChecked=0, Total=930 [2020-10-11 12:57:55,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2020-10-11 12:57:55,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 163. [2020-10-11 12:57:55,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-10-11 12:57:55,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 403 transitions. [2020-10-11 12:57:55,454 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 403 transitions. Word has length 14 [2020-10-11 12:57:55,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:57:55,455 INFO L481 AbstractCegarLoop]: Abstraction has 163 states and 403 transitions. [2020-10-11 12:57:55,455 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:57:55,455 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 403 transitions. [2020-10-11 12:57:55,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:57:55,455 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:57:55,455 INFO L421 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:57:55,656 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable241,235 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:57:55,656 INFO L429 AbstractCegarLoop]: === Iteration 243 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:57:55,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:57:55,657 INFO L82 PathProgramCache]: Analyzing trace with hash -1975468490, now seen corresponding path program 209 times [2020-10-11 12:57:55,657 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:57:55,657 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678175206] [2020-10-11 12:57:55,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:57:55,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:57:55,878 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:57:55,878 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678175206] [2020-10-11 12:57:55,879 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1812893235] [2020-10-11 12:57:55,879 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 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 [2020-10-11 12:57:55,916 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-11 12:57:55,916 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:57:55,917 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:57:55,917 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:57:56,270 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:57:56,270 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:57:56,270 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:57:56,270 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200874733] [2020-10-11 12:57:56,271 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:57:56,271 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:57:56,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:57:56,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:57:56,271 INFO L87 Difference]: Start difference. First operand 163 states and 403 transitions. Second operand 17 states. [2020-10-11 12:57:57,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:57:57,370 INFO L93 Difference]: Finished difference Result 246 states and 562 transitions. [2020-10-11 12:57:57,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-11 12:57:57,374 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-11 12:57:57,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:57:57,374 INFO L225 Difference]: With dead ends: 246 [2020-10-11 12:57:57,375 INFO L226 Difference]: Without dead ends: 244 [2020-10-11 12:57:57,375 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 182 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=220, Invalid=592, Unknown=0, NotChecked=0, Total=812 [2020-10-11 12:57:57,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2020-10-11 12:57:57,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 162. [2020-10-11 12:57:57,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-10-11 12:57:57,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 399 transitions. [2020-10-11 12:57:57,379 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 399 transitions. Word has length 14 [2020-10-11 12:57:57,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:57:57,379 INFO L481 AbstractCegarLoop]: Abstraction has 162 states and 399 transitions. [2020-10-11 12:57:57,379 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:57:57,379 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 399 transitions. [2020-10-11 12:57:57,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:57:57,379 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:57:57,380 INFO L421 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:57:57,580 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable242,236 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:57:57,580 INFO L429 AbstractCegarLoop]: === Iteration 244 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:57:57,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:57:57,581 INFO L82 PathProgramCache]: Analyzing trace with hash -1339163482, now seen corresponding path program 210 times [2020-10-11 12:57:57,581 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:57:57,581 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773602359] [2020-10-11 12:57:57,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:57:57,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:57:57,816 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:57:57,817 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773602359] [2020-10-11 12:57:57,817 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [272944732] [2020-10-11 12:57:57,817 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 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 [2020-10-11 12:57:57,858 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2020-10-11 12:57:57,858 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:57:57,860 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:57:57,860 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:57:58,172 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:57:58,173 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:57:58,173 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:57:58,173 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927256315] [2020-10-11 12:57:58,174 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:57:58,174 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:57:58,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:57:58,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:57:58,174 INFO L87 Difference]: Start difference. First operand 162 states and 399 transitions. Second operand 17 states. [2020-10-11 12:57:59,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:57:59,306 INFO L93 Difference]: Finished difference Result 250 states and 575 transitions. [2020-10-11 12:57:59,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-11 12:57:59,308 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-11 12:57:59,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:57:59,308 INFO L225 Difference]: With dead ends: 250 [2020-10-11 12:57:59,308 INFO L226 Difference]: Without dead ends: 248 [2020-10-11 12:57:59,309 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 238 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=258, Invalid=672, Unknown=0, NotChecked=0, Total=930 [2020-10-11 12:57:59,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2020-10-11 12:57:59,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 164. [2020-10-11 12:57:59,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2020-10-11 12:57:59,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 407 transitions. [2020-10-11 12:57:59,312 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 407 transitions. Word has length 14 [2020-10-11 12:57:59,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:57:59,312 INFO L481 AbstractCegarLoop]: Abstraction has 164 states and 407 transitions. [2020-10-11 12:57:59,312 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:57:59,312 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 407 transitions. [2020-10-11 12:57:59,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:57:59,313 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:57:59,313 INFO L421 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:57:59,513 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 237 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable243 [2020-10-11 12:57:59,514 INFO L429 AbstractCegarLoop]: === Iteration 245 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:57:59,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:57:59,514 INFO L82 PathProgramCache]: Analyzing trace with hash -1339162521, now seen corresponding path program 211 times [2020-10-11 12:57:59,515 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:57:59,515 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563430913] [2020-10-11 12:57:59,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:57:59,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:57:59,772 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:57:59,772 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563430913] [2020-10-11 12:57:59,773 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [801729778] [2020-10-11 12:57:59,773 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 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 [2020-10-11 12:57:59,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:57:59,813 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:57:59,814 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:58:00,283 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:58:00,283 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:58:00,283 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:58:00,284 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155258697] [2020-10-11 12:58:00,284 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:58:00,284 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:58:00,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:58:00,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:58:00,284 INFO L87 Difference]: Start difference. First operand 164 states and 407 transitions. Second operand 17 states. [2020-10-11 12:58:01,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:58:01,262 INFO L93 Difference]: Finished difference Result 245 states and 564 transitions. [2020-10-11 12:58:01,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-11 12:58:01,266 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-11 12:58:01,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:58:01,267 INFO L225 Difference]: With dead ends: 245 [2020-10-11 12:58:01,267 INFO L226 Difference]: Without dead ends: 243 [2020-10-11 12:58:01,267 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=220, Invalid=592, Unknown=0, NotChecked=0, Total=812 [2020-10-11 12:58:01,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2020-10-11 12:58:01,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 164. [2020-10-11 12:58:01,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2020-10-11 12:58:01,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 407 transitions. [2020-10-11 12:58:01,270 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 407 transitions. Word has length 14 [2020-10-11 12:58:01,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:58:01,270 INFO L481 AbstractCegarLoop]: Abstraction has 164 states and 407 transitions. [2020-10-11 12:58:01,270 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:58:01,270 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 407 transitions. [2020-10-11 12:58:01,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:58:01,270 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:58:01,271 INFO L421 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:58:01,471 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable244,238 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:58:01,471 INFO L429 AbstractCegarLoop]: === Iteration 246 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:58:01,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:58:01,472 INFO L82 PathProgramCache]: Analyzing trace with hash -1339133691, now seen corresponding path program 212 times [2020-10-11 12:58:01,472 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:58:01,473 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049817237] [2020-10-11 12:58:01,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:58:01,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:58:01,720 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:58:01,720 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049817237] [2020-10-11 12:58:01,720 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2116412397] [2020-10-11 12:58:01,721 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 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 [2020-10-11 12:58:01,767 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-11 12:58:01,767 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:58:01,768 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:58:01,769 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:58:02,305 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:58:02,306 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:58:02,306 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:58:02,306 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702525173] [2020-10-11 12:58:02,306 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:58:02,306 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:58:02,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:58:02,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=212, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:58:02,306 INFO L87 Difference]: Start difference. First operand 164 states and 407 transitions. Second operand 17 states. [2020-10-11 12:58:04,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:58:04,200 INFO L93 Difference]: Finished difference Result 262 states and 602 transitions. [2020-10-11 12:58:04,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-11 12:58:04,204 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-11 12:58:04,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:58:04,205 INFO L225 Difference]: With dead ends: 262 [2020-10-11 12:58:04,205 INFO L226 Difference]: Without dead ends: 260 [2020-10-11 12:58:04,205 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 301 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=305, Invalid=817, Unknown=0, NotChecked=0, Total=1122 [2020-10-11 12:58:04,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2020-10-11 12:58:04,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 165. [2020-10-11 12:58:04,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2020-10-11 12:58:04,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 411 transitions. [2020-10-11 12:58:04,209 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 411 transitions. Word has length 14 [2020-10-11 12:58:04,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:58:04,209 INFO L481 AbstractCegarLoop]: Abstraction has 165 states and 411 transitions. [2020-10-11 12:58:04,209 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:58:04,209 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 411 transitions. [2020-10-11 12:58:04,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:58:04,210 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:58:04,210 INFO L421 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:58:04,410 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 239 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable245 [2020-10-11 12:58:04,411 INFO L429 AbstractCegarLoop]: === Iteration 247 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:58:04,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:58:04,411 INFO L82 PathProgramCache]: Analyzing trace with hash -1318607692, now seen corresponding path program 213 times [2020-10-11 12:58:04,412 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:58:04,412 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993412115] [2020-10-11 12:58:04,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:58:04,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:58:04,690 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:58:04,691 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993412115] [2020-10-11 12:58:04,691 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [426790584] [2020-10-11 12:58:04,691 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 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 [2020-10-11 12:58:04,738 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-10-11 12:58:04,739 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:58:04,740 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:58:04,741 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:58:05,299 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:58:05,300 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:58:05,300 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:58:05,300 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563476560] [2020-10-11 12:58:05,300 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:58:05,300 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:58:05,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:58:05,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:58:05,301 INFO L87 Difference]: Start difference. First operand 165 states and 411 transitions. Second operand 17 states. [2020-10-11 12:58:06,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:58:06,856 INFO L93 Difference]: Finished difference Result 254 states and 594 transitions. [2020-10-11 12:58:06,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-11 12:58:06,861 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-11 12:58:06,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:58:06,861 INFO L225 Difference]: With dead ends: 254 [2020-10-11 12:58:06,862 INFO L226 Difference]: Without dead ends: 252 [2020-10-11 12:58:06,862 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 267 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=303, Invalid=753, Unknown=0, NotChecked=0, Total=1056 [2020-10-11 12:58:06,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2020-10-11 12:58:06,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 166. [2020-10-11 12:58:06,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states. [2020-10-11 12:58:06,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 416 transitions. [2020-10-11 12:58:06,866 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 416 transitions. Word has length 14 [2020-10-11 12:58:06,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:58:06,866 INFO L481 AbstractCegarLoop]: Abstraction has 166 states and 416 transitions. [2020-10-11 12:58:06,866 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:58:06,866 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 416 transitions. [2020-10-11 12:58:06,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:58:06,867 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:58:06,867 INFO L421 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:58:07,067 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 240 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable246 [2020-10-11 12:58:07,068 INFO L429 AbstractCegarLoop]: === Iteration 248 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:58:07,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:58:07,068 INFO L82 PathProgramCache]: Analyzing trace with hash -1318606731, now seen corresponding path program 214 times [2020-10-11 12:58:07,069 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:58:07,069 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939270165] [2020-10-11 12:58:07,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:58:07,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:58:07,419 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:58:07,419 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939270165] [2020-10-11 12:58:07,419 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1379670290] [2020-10-11 12:58:07,420 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 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 [2020-10-11 12:58:07,485 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-11 12:58:07,485 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:58:07,487 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:58:07,488 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:58:08,045 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:58:08,046 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:58:08,046 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:58:08,046 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872020224] [2020-10-11 12:58:08,046 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:58:08,046 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:58:08,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:58:08,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:58:08,047 INFO L87 Difference]: Start difference. First operand 166 states and 416 transitions. Second operand 17 states. [2020-10-11 12:58:09,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:58:09,436 INFO L93 Difference]: Finished difference Result 248 states and 576 transitions. [2020-10-11 12:58:09,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-11 12:58:09,439 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-11 12:58:09,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:58:09,440 INFO L225 Difference]: With dead ends: 248 [2020-10-11 12:58:09,440 INFO L226 Difference]: Without dead ends: 246 [2020-10-11 12:58:09,440 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 248 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=277, Invalid=715, Unknown=0, NotChecked=0, Total=992 [2020-10-11 12:58:09,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2020-10-11 12:58:09,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 167. [2020-10-11 12:58:09,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2020-10-11 12:58:09,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 418 transitions. [2020-10-11 12:58:09,444 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 418 transitions. Word has length 14 [2020-10-11 12:58:09,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:58:09,444 INFO L481 AbstractCegarLoop]: Abstraction has 167 states and 418 transitions. [2020-10-11 12:58:09,444 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:58:09,444 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 418 transitions. [2020-10-11 12:58:09,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:58:09,445 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:58:09,445 INFO L421 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:58:09,645 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable247,241 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:58:09,645 INFO L429 AbstractCegarLoop]: === Iteration 249 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:58:09,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:58:09,646 INFO L82 PathProgramCache]: Analyzing trace with hash -1317944602, now seen corresponding path program 215 times [2020-10-11 12:58:09,646 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:58:09,647 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411684852] [2020-10-11 12:58:09,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:58:09,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:58:09,860 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:58:09,860 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411684852] [2020-10-11 12:58:09,861 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1788746688] [2020-10-11 12:58:09,861 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 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 [2020-10-11 12:58:09,904 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2020-10-11 12:58:09,905 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:58:09,906 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:58:09,906 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:58:10,315 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:58:10,315 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:58:10,315 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:58:10,315 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569152486] [2020-10-11 12:58:10,316 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:58:10,316 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:58:10,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:58:10,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=203, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:58:10,316 INFO L87 Difference]: Start difference. First operand 167 states and 418 transitions. Second operand 17 states. [2020-10-11 12:58:11,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:58:11,934 INFO L93 Difference]: Finished difference Result 245 states and 579 transitions. [2020-10-11 12:58:11,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-11 12:58:11,939 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-11 12:58:11,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:58:11,940 INFO L225 Difference]: With dead ends: 245 [2020-10-11 12:58:11,940 INFO L226 Difference]: Without dead ends: 243 [2020-10-11 12:58:11,940 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 287 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=324, Invalid=798, Unknown=0, NotChecked=0, Total=1122 [2020-10-11 12:58:11,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2020-10-11 12:58:11,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 169. [2020-10-11 12:58:11,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2020-10-11 12:58:11,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 425 transitions. [2020-10-11 12:58:11,945 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 425 transitions. Word has length 14 [2020-10-11 12:58:11,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:58:11,945 INFO L481 AbstractCegarLoop]: Abstraction has 169 states and 425 transitions. [2020-10-11 12:58:11,945 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:58:11,945 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 425 transitions. [2020-10-11 12:58:11,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:58:11,946 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:58:11,946 INFO L421 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:58:12,158 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable248,242 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:58:12,159 INFO L429 AbstractCegarLoop]: === Iteration 250 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:58:12,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:58:12,159 INFO L82 PathProgramCache]: Analyzing trace with hash -1317923243, now seen corresponding path program 216 times [2020-10-11 12:58:12,160 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:58:12,160 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825468101] [2020-10-11 12:58:12,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:58:12,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:58:12,402 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:58:12,403 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825468101] [2020-10-11 12:58:12,403 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1956329728] [2020-10-11 12:58:12,403 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 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 [2020-10-11 12:58:12,452 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-11 12:58:12,453 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:58:12,453 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:58:12,454 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:58:12,772 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-11 12:58:12,798 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:58:12,799 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:58:12,799 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:58:12,799 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960007570] [2020-10-11 12:58:12,799 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:58:12,799 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:58:12,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:58:12,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:58:12,800 INFO L87 Difference]: Start difference. First operand 169 states and 425 transitions. Second operand 17 states. [2020-10-11 12:58:13,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:58:13,801 INFO L93 Difference]: Finished difference Result 223 states and 540 transitions. [2020-10-11 12:58:13,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-11 12:58:13,806 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-11 12:58:13,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:58:13,806 INFO L225 Difference]: With dead ends: 223 [2020-10-11 12:58:13,806 INFO L226 Difference]: Without dead ends: 218 [2020-10-11 12:58:13,807 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=258, Invalid=554, Unknown=0, NotChecked=0, Total=812 [2020-10-11 12:58:13,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-10-11 12:58:13,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 169. [2020-10-11 12:58:13,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2020-10-11 12:58:13,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 425 transitions. [2020-10-11 12:58:13,811 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 425 transitions. Word has length 14 [2020-10-11 12:58:13,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:58:13,811 INFO L481 AbstractCegarLoop]: Abstraction has 169 states and 425 transitions. [2020-10-11 12:58:13,811 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:58:13,811 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 425 transitions. [2020-10-11 12:58:13,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:58:13,811 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:58:13,811 INFO L421 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:58:14,012 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 243 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable249 [2020-10-11 12:58:14,012 INFO L429 AbstractCegarLoop]: === Iteration 251 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:58:14,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:58:14,013 INFO L82 PathProgramCache]: Analyzing trace with hash -1317922282, now seen corresponding path program 217 times [2020-10-11 12:58:14,013 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:58:14,013 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268669898] [2020-10-11 12:58:14,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:58:14,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:58:14,280 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:58:14,287 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268669898] [2020-10-11 12:58:14,287 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [768307240] [2020-10-11 12:58:14,287 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 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 [2020-10-11 12:58:14,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:58:14,329 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:58:14,329 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:58:14,689 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-11 12:58:14,779 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:58:14,780 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:58:14,780 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:58:14,780 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322593832] [2020-10-11 12:58:14,780 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:58:14,780 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:58:14,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:58:14,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:58:14,781 INFO L87 Difference]: Start difference. First operand 169 states and 425 transitions. Second operand 17 states. [2020-10-11 12:58:16,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:58:16,724 INFO L93 Difference]: Finished difference Result 286 states and 679 transitions. [2020-10-11 12:58:16,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-11 12:58:16,727 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-11 12:58:16,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:58:16,728 INFO L225 Difference]: With dead ends: 286 [2020-10-11 12:58:16,728 INFO L226 Difference]: Without dead ends: 281 [2020-10-11 12:58:16,729 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 349 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=384, Invalid=948, Unknown=0, NotChecked=0, Total=1332 [2020-10-11 12:58:16,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2020-10-11 12:58:16,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 167. [2020-10-11 12:58:16,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2020-10-11 12:58:16,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 418 transitions. [2020-10-11 12:58:16,732 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 418 transitions. Word has length 14 [2020-10-11 12:58:16,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:58:16,732 INFO L481 AbstractCegarLoop]: Abstraction has 167 states and 418 transitions. [2020-10-11 12:58:16,732 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:58:16,732 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 418 transitions. [2020-10-11 12:58:16,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:58:16,733 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:58:16,733 INFO L421 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:58:16,933 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable250,244 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:58:16,933 INFO L429 AbstractCegarLoop]: === Iteration 252 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:58:16,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:58:16,934 INFO L82 PathProgramCache]: Analyzing trace with hash -1317914811, now seen corresponding path program 218 times [2020-10-11 12:58:16,934 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:58:16,934 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569167622] [2020-10-11 12:58:16,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:58:16,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:58:17,189 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:58:17,190 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569167622] [2020-10-11 12:58:17,190 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [275053857] [2020-10-11 12:58:17,190 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 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 [2020-10-11 12:58:17,231 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-11 12:58:17,231 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:58:17,233 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:58:17,233 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:58:17,708 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:58:17,709 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:58:17,709 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:58:17,709 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672894454] [2020-10-11 12:58:17,709 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:58:17,710 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:58:17,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:58:17,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=201, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:58:17,710 INFO L87 Difference]: Start difference. First operand 167 states and 418 transitions. Second operand 17 states. [2020-10-11 12:58:19,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:58:19,290 INFO L93 Difference]: Finished difference Result 268 states and 630 transitions. [2020-10-11 12:58:19,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-11 12:58:19,291 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-11 12:58:19,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:58:19,292 INFO L225 Difference]: With dead ends: 268 [2020-10-11 12:58:19,292 INFO L226 Difference]: Without dead ends: 266 [2020-10-11 12:58:19,292 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 319 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=335, Invalid=855, Unknown=0, NotChecked=0, Total=1190 [2020-10-11 12:58:19,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2020-10-11 12:58:19,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 169. [2020-10-11 12:58:19,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2020-10-11 12:58:19,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 425 transitions. [2020-10-11 12:58:19,296 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 425 transitions. Word has length 14 [2020-10-11 12:58:19,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:58:19,296 INFO L481 AbstractCegarLoop]: Abstraction has 169 states and 425 transitions. [2020-10-11 12:58:19,296 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:58:19,296 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 425 transitions. [2020-10-11 12:58:19,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:58:19,296 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:58:19,296 INFO L421 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:58:19,497 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 245 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable251 [2020-10-11 12:58:19,498 INFO L429 AbstractCegarLoop]: === Iteration 253 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:58:19,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:58:19,499 INFO L82 PathProgramCache]: Analyzing trace with hash -1317893452, now seen corresponding path program 219 times [2020-10-11 12:58:19,499 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:58:19,500 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321048748] [2020-10-11 12:58:19,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:58:19,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:58:19,762 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:58:19,762 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321048748] [2020-10-11 12:58:19,763 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [318387929] [2020-10-11 12:58:19,763 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 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 [2020-10-11 12:58:19,807 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-11 12:58:19,807 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:58:19,809 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:58:19,809 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:58:20,223 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-11 12:58:20,328 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:58:20,328 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:58:20,329 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:58:20,329 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395229522] [2020-10-11 12:58:20,329 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:58:20,329 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:58:20,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:58:20,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:58:20,329 INFO L87 Difference]: Start difference. First operand 169 states and 425 transitions. Second operand 17 states. [2020-10-11 12:58:22,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:58:22,678 INFO L93 Difference]: Finished difference Result 296 states and 707 transitions. [2020-10-11 12:58:22,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-11 12:58:22,680 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-11 12:58:22,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:58:22,681 INFO L225 Difference]: With dead ends: 296 [2020-10-11 12:58:22,681 INFO L226 Difference]: Without dead ends: 291 [2020-10-11 12:58:22,681 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 370 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=419, Invalid=987, Unknown=0, NotChecked=0, Total=1406 [2020-10-11 12:58:22,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2020-10-11 12:58:22,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 169. [2020-10-11 12:58:22,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2020-10-11 12:58:22,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 425 transitions. [2020-10-11 12:58:22,684 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 425 transitions. Word has length 14 [2020-10-11 12:58:22,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:58:22,684 INFO L481 AbstractCegarLoop]: Abstraction has 169 states and 425 transitions. [2020-10-11 12:58:22,684 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:58:22,685 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 425 transitions. [2020-10-11 12:58:22,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:58:22,685 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:58:22,685 INFO L421 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:58:22,885 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable252,246 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:58:22,886 INFO L429 AbstractCegarLoop]: === Iteration 254 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:58:22,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:58:22,887 INFO L82 PathProgramCache]: Analyzing trace with hash -1317892491, now seen corresponding path program 220 times [2020-10-11 12:58:22,887 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:58:22,887 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461753476] [2020-10-11 12:58:22,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:58:22,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:58:23,155 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:58:23,155 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461753476] [2020-10-11 12:58:23,155 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1515343057] [2020-10-11 12:58:23,155 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 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 [2020-10-11 12:58:23,201 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-11 12:58:23,201 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:58:23,203 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:58:23,203 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:58:23,642 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-11 12:58:23,698 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:58:23,699 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:58:23,699 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:58:23,699 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956131527] [2020-10-11 12:58:23,699 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:58:23,699 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:58:23,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:58:23,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:58:23,700 INFO L87 Difference]: Start difference. First operand 169 states and 425 transitions. Second operand 17 states. [2020-10-11 12:58:26,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:58:26,341 INFO L93 Difference]: Finished difference Result 299 states and 710 transitions. [2020-10-11 12:58:26,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-11 12:58:26,346 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-11 12:58:26,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:58:26,347 INFO L225 Difference]: With dead ends: 299 [2020-10-11 12:58:26,347 INFO L226 Difference]: Without dead ends: 294 [2020-10-11 12:58:26,348 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 446 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=476, Invalid=1084, Unknown=0, NotChecked=0, Total=1560 [2020-10-11 12:58:26,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2020-10-11 12:58:26,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 165. [2020-10-11 12:58:26,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2020-10-11 12:58:26,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 411 transitions. [2020-10-11 12:58:26,360 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 411 transitions. Word has length 14 [2020-10-11 12:58:26,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:58:26,360 INFO L481 AbstractCegarLoop]: Abstraction has 165 states and 411 transitions. [2020-10-11 12:58:26,360 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:58:26,360 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 411 transitions. [2020-10-11 12:58:26,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:58:26,361 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:58:26,361 INFO L421 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:58:26,572 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable253,247 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:58:26,573 INFO L429 AbstractCegarLoop]: === Iteration 255 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:58:26,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:58:26,574 INFO L82 PathProgramCache]: Analyzing trace with hash -1317684171, now seen corresponding path program 221 times [2020-10-11 12:58:26,574 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:58:26,574 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051983655] [2020-10-11 12:58:26,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:58:26,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:58:26,859 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:58:26,859 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051983655] [2020-10-11 12:58:26,860 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [558822694] [2020-10-11 12:58:26,860 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 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 [2020-10-11 12:58:26,903 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-11 12:58:26,903 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:58:26,904 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:58:26,905 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:58:27,633 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:58:27,634 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:58:27,634 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:58:27,634 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420639195] [2020-10-11 12:58:27,634 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:58:27,634 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:58:27,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:58:27,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=207, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:58:27,635 INFO L87 Difference]: Start difference. First operand 165 states and 411 transitions. Second operand 17 states. [2020-10-11 12:58:29,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:58:29,698 INFO L93 Difference]: Finished difference Result 274 states and 633 transitions. [2020-10-11 12:58:29,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-11 12:58:29,701 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-11 12:58:29,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:58:29,702 INFO L225 Difference]: With dead ends: 274 [2020-10-11 12:58:29,703 INFO L226 Difference]: Without dead ends: 272 [2020-10-11 12:58:29,703 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 341 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=358, Invalid=902, Unknown=0, NotChecked=0, Total=1260 [2020-10-11 12:58:29,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2020-10-11 12:58:29,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 169. [2020-10-11 12:58:29,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2020-10-11 12:58:29,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 426 transitions. [2020-10-11 12:58:29,707 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 426 transitions. Word has length 14 [2020-10-11 12:58:29,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:58:29,708 INFO L481 AbstractCegarLoop]: Abstraction has 169 states and 426 transitions. [2020-10-11 12:58:29,708 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:58:29,708 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 426 transitions. [2020-10-11 12:58:29,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:58:29,708 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:58:29,708 INFO L421 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:58:29,914 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable254,248 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 12:58:29,915 INFO L429 AbstractCegarLoop]: === Iteration 256 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:58:29,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:58:29,916 INFO L82 PathProgramCache]: Analyzing trace with hash -1317021081, now seen corresponding path program 222 times [2020-10-11 12:58:29,916 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:58:29,917 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579088617] [2020-10-11 12:58:29,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:58:29,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:58:30,192 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:58:30,193 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579088617] [2020-10-11 12:58:30,193 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [674071704] [2020-10-11 12:58:30,193 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 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 [2020-10-11 12:58:30,240 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-11 12:58:30,240 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:58:30,241 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:58:30,242 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:58:30,846 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:58:30,846 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:58:30,846 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:58:30,846 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863010999] [2020-10-11 12:58:30,847 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:58:30,847 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:58:30,847 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:58:30,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:58:30,847 INFO L87 Difference]: Start difference. First operand 169 states and 426 transitions. Second operand 17 states. [2020-10-11 12:58:33,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:58:33,459 INFO L93 Difference]: Finished difference Result 282 states and 670 transitions. [2020-10-11 12:58:33,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-11 12:58:33,465 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-11 12:58:33,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:58:33,466 INFO L225 Difference]: With dead ends: 282 [2020-10-11 12:58:33,466 INFO L226 Difference]: Without dead ends: 280 [2020-10-11 12:58:33,466 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 356 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=397, Invalid=935, Unknown=0, NotChecked=0, Total=1332 [2020-10-11 12:58:33,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2020-10-11 12:58:33,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 174. [2020-10-11 12:58:33,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2020-10-11 12:58:33,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 442 transitions. [2020-10-11 12:58:33,471 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 442 transitions. Word has length 14 [2020-10-11 12:58:33,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:58:33,472 INFO L481 AbstractCegarLoop]: Abstraction has 174 states and 442 transitions. [2020-10-11 12:58:33,472 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:58:33,472 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 442 transitions. [2020-10-11 12:58:33,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:58:33,472 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:58:33,473 INFO L421 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:58:33,675 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 249 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable255 [2020-10-11 12:58:33,675 INFO L429 AbstractCegarLoop]: === Iteration 257 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:58:33,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:58:33,676 INFO L82 PathProgramCache]: Analyzing trace with hash -1316999722, now seen corresponding path program 223 times [2020-10-11 12:58:33,676 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:58:33,676 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355993530] [2020-10-11 12:58:33,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:58:33,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:58:33,948 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:58:33,948 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355993530] [2020-10-11 12:58:33,948 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [471193200] [2020-10-11 12:58:33,948 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 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 [2020-10-11 12:58:33,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:58:33,990 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:58:33,991 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:58:34,392 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-11 12:58:34,498 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:58:34,499 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:58:34,499 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:58:34,499 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083894288] [2020-10-11 12:58:34,500 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:58:34,500 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:58:34,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:58:34,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2020-10-11 12:58:34,500 INFO L87 Difference]: Start difference. First operand 174 states and 442 transitions. Second operand 17 states. [2020-10-11 12:58:36,216 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 27 [2020-10-11 12:58:36,808 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 28 [2020-10-11 12:58:37,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 12:58:37,638 INFO L93 Difference]: Finished difference Result 321 states and 773 transitions. [2020-10-11 12:58:37,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-11 12:58:37,643 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-11 12:58:37,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 12:58:37,643 INFO L225 Difference]: With dead ends: 321 [2020-10-11 12:58:37,644 INFO L226 Difference]: Without dead ends: 313 [2020-10-11 12:58:37,644 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 531 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=528, Invalid=1278, Unknown=0, NotChecked=0, Total=1806 [2020-10-11 12:58:37,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2020-10-11 12:58:37,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 176. [2020-10-11 12:58:37,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2020-10-11 12:58:37,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 452 transitions. [2020-10-11 12:58:37,648 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 452 transitions. Word has length 14 [2020-10-11 12:58:37,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 12:58:37,648 INFO L481 AbstractCegarLoop]: Abstraction has 176 states and 452 transitions. [2020-10-11 12:58:37,648 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 12:58:37,648 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 452 transitions. [2020-10-11 12:58:37,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 12:58:37,648 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 12:58:37,648 INFO L421 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 12:58:37,849 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 250 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable256 [2020-10-11 12:58:37,849 INFO L429 AbstractCegarLoop]: === Iteration 258 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 12:58:37,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 12:58:37,850 INFO L82 PathProgramCache]: Analyzing trace with hash -1316998761, now seen corresponding path program 224 times [2020-10-11 12:58:37,850 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 12:58:37,850 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491275416] [2020-10-11 12:58:37,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 12:58:37,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 12:58:38,150 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:58:38,150 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491275416] [2020-10-11 12:58:38,151 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [811216273] [2020-10-11 12:58:38,151 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 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 [2020-10-11 12:58:38,192 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-11 12:58:38,192 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 12:58:38,193 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 12:58:38,194 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 12:58:42,902 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-11 12:58:43,014 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 12:58:43,014 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 12:58:43,014 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-11 12:58:43,015 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786633633] [2020-10-11 12:58:43,015 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 12:58:43,015 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 12:58:43,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 12:58:43,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=190, Unknown=2, NotChecked=0, Total=272 [2020-10-11 12:58:43,015 INFO L87 Difference]: Start difference. First operand 176 states and 452 transitions. Second operand 17 states. [2020-10-11 12:58:43,861 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 16 [2020-10-11 12:58:48,317 WARN L193 SmtUtils]: Spent 4.14 s on a formula simplification. DAG size of input: 54 DAG size of output: 36 [2020-10-11 12:58:52,547 WARN L193 SmtUtils]: Spent 4.13 s on a formula simplification. DAG size of input: 47 DAG size of output: 37 [2020-10-11 12:58:57,006 WARN L193 SmtUtils]: Spent 4.14 s on a formula simplification. DAG size of input: 58 DAG size of output: 39 Received shutdown request... [2020-10-11 12:58:59,239 WARN L210 SmtUtils]: Removed 5 from assertion stack [2020-10-11 12:58:59,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-11 12:58:59,440 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 251 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable257 [2020-10-11 12:58:59,441 WARN L546 AbstractCegarLoop]: Verification canceled [2020-10-11 12:58:59,445 WARN L235 ceAbstractionStarter]: Timeout [2020-10-11 12:58:59,445 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 12:58:59 BasicIcfg [2020-10-11 12:58:59,445 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-11 12:58:59,446 INFO L168 Benchmark]: Toolchain (without parser) took 871441.98 ms. Allocated memory was 251.7 MB in the beginning and 225.4 MB in the end (delta: -26.2 MB). Free memory was 207.6 MB in the beginning and 170.7 MB in the end (delta: 37.0 MB). Peak memory consumption was 10.7 MB. Max. memory is 14.2 GB. [2020-10-11 12:58:59,447 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 251.7 MB. Free memory is still 228.0 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-11 12:58:59,447 INFO L168 Benchmark]: CACSL2BoogieTranslator took 592.39 ms. Allocated memory was 251.7 MB in the beginning and 315.1 MB in the end (delta: 63.4 MB). Free memory was 207.6 MB in the beginning and 270.9 MB in the end (delta: -63.3 MB). Peak memory consumption was 29.6 MB. Max. memory is 14.2 GB. [2020-10-11 12:58:59,447 INFO L168 Benchmark]: Boogie Procedure Inliner took 47.43 ms. Allocated memory is still 315.1 MB. Free memory was 270.9 MB in the beginning and 268.4 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-11 12:58:59,448 INFO L168 Benchmark]: Boogie Preprocessor took 26.54 ms. Allocated memory is still 315.1 MB. Free memory was 268.4 MB in the beginning and 265.9 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-11 12:58:59,448 INFO L168 Benchmark]: RCFGBuilder took 394.16 ms. Allocated memory is still 315.1 MB. Free memory was 265.9 MB in the beginning and 246.5 MB in the end (delta: 19.3 MB). Peak memory consumption was 19.3 MB. Max. memory is 14.2 GB. [2020-10-11 12:58:59,448 INFO L168 Benchmark]: TraceAbstraction took 870373.56 ms. Allocated memory was 315.1 MB in the beginning and 225.4 MB in the end (delta: -89.7 MB). Free memory was 246.5 MB in the beginning and 170.7 MB in the end (delta: 75.9 MB). There was no memory consumed. Max. memory is 14.2 GB. [2020-10-11 12:58:59,450 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 251.7 MB. Free memory is still 228.0 MB. There was no memory consumed. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 592.39 ms. Allocated memory was 251.7 MB in the beginning and 315.1 MB in the end (delta: 63.4 MB). Free memory was 207.6 MB in the beginning and 270.9 MB in the end (delta: -63.3 MB). Peak memory consumption was 29.6 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 47.43 ms. Allocated memory is still 315.1 MB. Free memory was 270.9 MB in the beginning and 268.4 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * Boogie Preprocessor took 26.54 ms. Allocated memory is still 315.1 MB. Free memory was 268.4 MB in the beginning and 265.9 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * RCFGBuilder took 394.16 ms. Allocated memory is still 315.1 MB. Free memory was 265.9 MB in the beginning and 246.5 MB in the end (delta: 19.3 MB). Peak memory consumption was 19.3 MB. Max. memory is 14.2 GB. * TraceAbstraction took 870373.56 ms. Allocated memory was 315.1 MB in the beginning and 225.4 MB in the end (delta: -89.7 MB). Free memory was 246.5 MB in the beginning and 170.7 MB in the end (delta: 75.9 MB). There was no memory consumed. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 721 VarBasedMoverChecksPositive, 19 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 19 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.1s, 21 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.2s, 59 PlacesBefore, 20 PlacesAfterwards, 57 TransitionsBefore, 15 TransitionsAfterwards, 1032 CoEnabledTransitionPairs, 5 FixpointIterations, 12 TrivialSequentialCompositions, 26 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 3 ChoiceCompositions, 50 TotalNumberOfCompositions, 1052 MoverChecksTotal - TimeoutResultAtElement [Line: 712]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 712). Cancelled while BasicCegarLoop was constructing difference of abstraction (176states) and FLOYD_HOARE automaton (currently 16 states, 17 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 51 for 2050ms.. - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 53 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: TIMEOUT, OverallTime: 870.2s, OverallIterations: 258, TraceHistogramMax: 6, AutomataDifference: 662.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.3s, HoareTripleCheckerStatistics: 3352 SDtfs, 30827 SDslu, 25565 SDs, 0 SdLazy, 18147 SolverSat, 7669 SolverUnsat, 117 SolverUnknown, 0 SolverNotchecked, 251.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 7334 GetRequests, 1247 SyntacticMatches, 230 SemanticMatches, 5856 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38170 ImplicationChecksByTransitivity, 522.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=176occurred in iteration=257, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.9s AutomataMinimizationTime, 257 MinimizatonAttempts, 15144 StatesRemovedByMinimization, 257 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 1.4s SsaConstructionTime, 3.9s SatisfiabilityAnalysisTime, 140.6s InterpolantComputationTime, 6574 NumberOfCodeBlocks, 6574 NumberOfCodeBlocksAsserted, 805 NumberOfCheckSat, 6066 ConstructedInterpolants, 32 QuantifiedInterpolants, 673315 SizeOfPredicates, 250 NumberOfNonLiveVariables, 22230 ConjunctsInSsa, 2536 ConjunctsInUnsatCore, 508 InterpolantComputations, 8 PerfectInterpolantSequences, 0/2794 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