/usr/bin/java -Xmx8000000000 -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-lit/fkp2013-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b09bf87 [2020-10-16 11:23:12,840 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-16 11:23:12,843 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-16 11:23:12,868 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-16 11:23:12,869 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-16 11:23:12,870 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-16 11:23:12,871 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-16 11:23:12,873 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-16 11:23:12,875 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-16 11:23:12,875 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-16 11:23:12,876 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-16 11:23:12,877 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-16 11:23:12,878 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-16 11:23:12,879 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-16 11:23:12,880 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-16 11:23:12,881 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-16 11:23:12,881 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-16 11:23:12,882 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-16 11:23:12,884 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-16 11:23:12,886 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-16 11:23:12,887 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-16 11:23:12,888 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-16 11:23:12,890 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-16 11:23:12,890 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-16 11:23:12,893 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-16 11:23:12,893 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-16 11:23:12,893 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-16 11:23:12,894 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-16 11:23:12,895 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-16 11:23:12,896 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-16 11:23:12,896 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-16 11:23:12,896 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-16 11:23:12,897 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-16 11:23:12,898 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-16 11:23:12,899 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-16 11:23:12,899 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-16 11:23:12,900 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-16 11:23:12,900 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-16 11:23:12,900 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-16 11:23:12,901 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-16 11:23:12,902 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-16 11:23:12,903 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-16 11:23:12,925 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-16 11:23:12,925 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-16 11:23:12,926 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-16 11:23:12,927 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-16 11:23:12,927 INFO L138 SettingsManager]: * Use SBE=true [2020-10-16 11:23:12,927 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-16 11:23:12,927 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-16 11:23:12,927 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-16 11:23:12,928 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-16 11:23:12,928 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-16 11:23:12,928 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-16 11:23:12,928 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-16 11:23:12,928 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-16 11:23:12,929 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-16 11:23:12,929 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-16 11:23:12,929 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-16 11:23:12,929 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-16 11:23:12,929 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-16 11:23:12,930 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-16 11:23:12,930 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-16 11:23:12,930 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-16 11:23:12,930 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 11:23:12,930 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-16 11:23:12,931 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-16 11:23:12,931 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-16 11:23:12,931 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-16 11:23:12,931 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-16 11:23:12,932 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-16 11:23:12,932 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-16 11:23:12,932 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-16 11:23:13,212 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-16 11:23:13,225 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-16 11:23:13,228 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-16 11:23:13,230 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-16 11:23:13,230 INFO L275 PluginConnector]: CDTParser initialized [2020-10-16 11:23:13,231 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-lit/fkp2013-1.i [2020-10-16 11:23:13,306 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d25bf5bf7/de48c2a005304576b3044a374170382b/FLAG933ff22da [2020-10-16 11:23:13,884 INFO L306 CDTParser]: Found 1 translation units. [2020-10-16 11:23:13,885 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/pthread-lit/fkp2013-1.i [2020-10-16 11:23:13,902 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d25bf5bf7/de48c2a005304576b3044a374170382b/FLAG933ff22da [2020-10-16 11:23:14,161 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d25bf5bf7/de48c2a005304576b3044a374170382b [2020-10-16 11:23:14,169 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-16 11:23:14,170 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-16 11:23:14,172 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-16 11:23:14,172 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-16 11:23:14,175 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-16 11:23:14,176 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 11:23:14" (1/1) ... [2020-10-16 11:23:14,179 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ecc0849 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:23:14, skipping insertion in model container [2020-10-16 11:23:14,179 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 11:23:14" (1/1) ... [2020-10-16 11:23:14,187 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-16 11:23:14,225 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-16 11:23:14,713 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 11:23:14,730 INFO L203 MainTranslator]: Completed pre-run [2020-10-16 11:23:14,784 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 11:23:14,873 INFO L208 MainTranslator]: Completed translation [2020-10-16 11:23:14,873 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:23:14 WrapperNode [2020-10-16 11:23:14,874 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-16 11:23:14,874 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-16 11:23:14,875 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-16 11:23:14,875 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-16 11:23:14,883 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:23:14" (1/1) ... [2020-10-16 11:23:14,899 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:23:14" (1/1) ... [2020-10-16 11:23:14,923 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-16 11:23:14,924 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-16 11:23:14,924 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-16 11:23:14,924 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-16 11:23:14,932 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:23:14" (1/1) ... [2020-10-16 11:23:14,932 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:23:14" (1/1) ... [2020-10-16 11:23:14,935 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:23:14" (1/1) ... [2020-10-16 11:23:14,935 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:23:14" (1/1) ... [2020-10-16 11:23:14,940 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:23:14" (1/1) ... [2020-10-16 11:23:14,945 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:23:14" (1/1) ... [2020-10-16 11:23:14,947 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:23:14" (1/1) ... [2020-10-16 11:23:14,950 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-16 11:23:14,950 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-16 11:23:14,950 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-16 11:23:14,950 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-16 11:23:14,951 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:23:14" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 11:23:15,015 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2020-10-16 11:23:15,016 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2020-10-16 11:23:15,016 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2020-10-16 11:23:15,016 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2020-10-16 11:23:15,016 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-16 11:23:15,017 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-16 11:23:15,017 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-16 11:23:15,018 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-16 11:23:15,018 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-16 11:23:15,021 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-16 11:23:15,416 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-16 11:23:15,416 INFO L298 CfgBuilder]: Removed 7 assume(true) statements. [2020-10-16 11:23:15,418 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 11:23:15 BoogieIcfgContainer [2020-10-16 11:23:15,418 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-16 11:23:15,420 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-16 11:23:15,420 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-16 11:23:15,424 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-16 11:23:15,424 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 11:23:14" (1/3) ... [2020-10-16 11:23:15,425 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e8e6621 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 11:23:15, skipping insertion in model container [2020-10-16 11:23:15,426 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:23:14" (2/3) ... [2020-10-16 11:23:15,426 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e8e6621 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 11:23:15, skipping insertion in model container [2020-10-16 11:23:15,426 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 11:23:15" (3/3) ... [2020-10-16 11:23:15,428 INFO L111 eAbstractionObserver]: Analyzing ICFG fkp2013-1.i [2020-10-16 11:23:15,439 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-16 11:23:15,440 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-16 11:23:15,446 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-16 11:23:15,447 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-16 11:23:15,474 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:15,475 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:15,475 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:15,475 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:15,476 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:15,476 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:15,476 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:15,477 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:15,477 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:15,478 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:15,478 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:15,478 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:15,478 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:15,479 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:15,479 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:15,479 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:15,480 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:15,480 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:15,480 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:15,481 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:15,481 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:15,485 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:15,485 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:15,486 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:15,487 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:15,487 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:15,493 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:15,493 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:15,493 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:15,494 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:15,494 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:15,494 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:15,497 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-16 11:23:15,510 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-16 11:23:15,531 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 11:23:15,531 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-16 11:23:15,532 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-16 11:23:15,532 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 11:23:15,532 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 11:23:15,532 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 11:23:15,532 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 11:23:15,533 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 11:23:15,544 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-16 11:23:15,547 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 55 places, 51 transitions, 112 flow [2020-10-16 11:23:15,549 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 55 places, 51 transitions, 112 flow [2020-10-16 11:23:15,551 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 55 places, 51 transitions, 112 flow [2020-10-16 11:23:15,590 INFO L129 PetriNetUnfolder]: 3/61 cut-off events. [2020-10-16 11:23:15,590 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 11:23:15,597 INFO L80 FinitePrefix]: Finished finitePrefix Result has 69 conditions, 61 events. 3/61 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 100 event pairs, 0 based on Foata normal form. 0/55 useless extension candidates. Maximal degree in co-relation 49. Up to 4 conditions per place. [2020-10-16 11:23:15,599 INFO L117 LiptonReduction]: Number of co-enabled transitions 692 [2020-10-16 11:23:16,651 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 62 [2020-10-16 11:23:16,724 INFO L132 LiptonReduction]: Checked pairs total: 670 [2020-10-16 11:23:16,724 INFO L134 LiptonReduction]: Total number of compositions: 47 [2020-10-16 11:23:16,731 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 18 places, 12 transitions, 34 flow [2020-10-16 11:23:16,743 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 44 states. [2020-10-16 11:23:16,746 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2020-10-16 11:23:16,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-10-16 11:23:16,753 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:23:16,754 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-10-16 11:23:16,754 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 11:23:16,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:23:16,761 INFO L82 PathProgramCache]: Analyzing trace with hash 208056, now seen corresponding path program 1 times [2020-10-16 11:23:16,772 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:23:16,772 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379740768] [2020-10-16 11:23:16,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:23:16,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:23:16,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:23:16,960 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379740768] [2020-10-16 11:23:16,961 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:23:16,962 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 11:23:16,962 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615586579] [2020-10-16 11:23:16,967 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 11:23:16,968 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:23:16,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 11:23:16,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 11:23:16,987 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 3 states. [2020-10-16 11:23:17,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:23:17,030 INFO L93 Difference]: Finished difference Result 35 states and 59 transitions. [2020-10-16 11:23:17,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 11:23:17,032 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-10-16 11:23:17,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:23:17,043 INFO L225 Difference]: With dead ends: 35 [2020-10-16 11:23:17,043 INFO L226 Difference]: Without dead ends: 31 [2020-10-16 11:23:17,045 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 11:23:17,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-10-16 11:23:17,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-10-16 11:23:17,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-16 11:23:17,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 51 transitions. [2020-10-16 11:23:17,083 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 51 transitions. Word has length 3 [2020-10-16 11:23:17,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:23:17,083 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 51 transitions. [2020-10-16 11:23:17,084 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 11:23:17,084 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 51 transitions. [2020-10-16 11:23:17,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-10-16 11:23:17,084 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:23:17,085 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:23:17,085 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-16 11:23:17,085 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 11:23:17,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:23:17,086 INFO L82 PathProgramCache]: Analyzing trace with hash -1139052385, now seen corresponding path program 1 times [2020-10-16 11:23:17,086 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:23:17,086 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357615059] [2020-10-16 11:23:17,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:23:17,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:23:17,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:23:17,171 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357615059] [2020-10-16 11:23:17,171 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:23:17,171 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 11:23:17,172 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152889900] [2020-10-16 11:23:17,173 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 11:23:17,174 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:23:17,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 11:23:17,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-16 11:23:17,178 INFO L87 Difference]: Start difference. First operand 31 states and 51 transitions. Second operand 4 states. [2020-10-16 11:23:17,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:23:17,198 INFO L93 Difference]: Finished difference Result 26 states and 42 transitions. [2020-10-16 11:23:17,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 11:23:17,198 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-10-16 11:23:17,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:23:17,199 INFO L225 Difference]: With dead ends: 26 [2020-10-16 11:23:17,199 INFO L226 Difference]: Without dead ends: 24 [2020-10-16 11:23:17,200 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-16 11:23:17,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-10-16 11:23:17,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2020-10-16 11:23:17,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-10-16 11:23:17,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 39 transitions. [2020-10-16 11:23:17,205 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 39 transitions. Word has length 7 [2020-10-16 11:23:17,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:23:17,206 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 39 transitions. [2020-10-16 11:23:17,206 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 11:23:17,206 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 39 transitions. [2020-10-16 11:23:17,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-16 11:23:17,207 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:23:17,207 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2020-10-16 11:23:17,207 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-16 11:23:17,207 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 11:23:17,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:23:17,208 INFO L82 PathProgramCache]: Analyzing trace with hash -950894116, now seen corresponding path program 1 times [2020-10-16 11:23:17,208 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:23:17,208 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647887061] [2020-10-16 11:23:17,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:23:17,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 11:23:17,232 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 11:23:17,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 11:23:17,246 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 11:23:17,270 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-16 11:23:17,270 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-16 11:23:17,271 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-16 11:23:17,272 WARN L371 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-16 11:23:17,273 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2020-10-16 11:23:17,282 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:17,282 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:17,282 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:17,283 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:17,283 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:17,283 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:17,283 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:17,283 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:17,284 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:17,284 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:17,284 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:17,284 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:17,284 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:17,285 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:17,285 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:17,285 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:17,285 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:17,286 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:17,286 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:17,286 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:17,286 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:17,287 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:17,287 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:17,287 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:17,287 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:17,288 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:17,288 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:17,288 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:17,288 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:17,289 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:17,289 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:17,289 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:17,289 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:17,290 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:17,290 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:17,290 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:17,290 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:17,290 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:17,291 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:17,291 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:17,294 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:17,295 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:17,295 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:17,295 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:17,296 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:17,296 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:17,296 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:17,298 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:17,298 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:17,299 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:17,299 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:17,299 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:17,300 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:17,301 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:17,301 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:17,301 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:17,301 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:17,301 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:17,303 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:17,303 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:17,303 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:17,304 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:17,304 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:17,304 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:17,305 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-16 11:23:17,306 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-10-16 11:23:17,306 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 11:23:17,306 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-16 11:23:17,306 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-16 11:23:17,307 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 11:23:17,307 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 11:23:17,307 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 11:23:17,307 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 11:23:17,307 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 11:23:17,310 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-16 11:23:17,310 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 76 places, 69 transitions, 162 flow [2020-10-16 11:23:17,310 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 76 places, 69 transitions, 162 flow [2020-10-16 11:23:17,311 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 76 places, 69 transitions, 162 flow [2020-10-16 11:23:17,330 INFO L129 PetriNetUnfolder]: 4/83 cut-off events. [2020-10-16 11:23:17,330 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2020-10-16 11:23:17,332 INFO L80 FinitePrefix]: Finished finitePrefix Result has 97 conditions, 83 events. 4/83 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 141 event pairs, 0 based on Foata normal form. 0/75 useless extension candidates. Maximal degree in co-relation 92. Up to 6 conditions per place. [2020-10-16 11:23:17,334 INFO L117 LiptonReduction]: Number of co-enabled transitions 1108 [2020-10-16 11:23:18,476 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 60 [2020-10-16 11:23:18,553 INFO L132 LiptonReduction]: Checked pairs total: 1240 [2020-10-16 11:23:18,554 INFO L134 LiptonReduction]: Total number of compositions: 62 [2020-10-16 11:23:18,555 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 21 transitions, 66 flow [2020-10-16 11:23:18,567 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 224 states. [2020-10-16 11:23:18,568 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states. [2020-10-16 11:23:18,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-10-16 11:23:18,568 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:23:18,568 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-10-16 11:23:18,569 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:23:18,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:23:18,569 INFO L82 PathProgramCache]: Analyzing trace with hash 354555, now seen corresponding path program 1 times [2020-10-16 11:23:18,569 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:23:18,570 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795032374] [2020-10-16 11:23:18,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:23:18,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:23:18,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:23:18,602 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795032374] [2020-10-16 11:23:18,602 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:23:18,602 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 11:23:18,603 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857346573] [2020-10-16 11:23:18,603 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 11:23:18,603 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:23:18,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 11:23:18,604 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 11:23:18,604 INFO L87 Difference]: Start difference. First operand 224 states. Second operand 3 states. [2020-10-16 11:23:18,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:23:18,631 INFO L93 Difference]: Finished difference Result 185 states and 459 transitions. [2020-10-16 11:23:18,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 11:23:18,634 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-10-16 11:23:18,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:23:18,639 INFO L225 Difference]: With dead ends: 185 [2020-10-16 11:23:18,639 INFO L226 Difference]: Without dead ends: 171 [2020-10-16 11:23:18,639 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 11:23:18,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2020-10-16 11:23:18,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2020-10-16 11:23:18,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2020-10-16 11:23:18,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 418 transitions. [2020-10-16 11:23:18,666 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 418 transitions. Word has length 3 [2020-10-16 11:23:18,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:23:18,666 INFO L481 AbstractCegarLoop]: Abstraction has 171 states and 418 transitions. [2020-10-16 11:23:18,666 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 11:23:18,667 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 418 transitions. [2020-10-16 11:23:18,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-16 11:23:18,667 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:23:18,667 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:23:18,668 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-16 11:23:18,668 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:23:18,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:23:18,668 INFO L82 PathProgramCache]: Analyzing trace with hash -1106209149, now seen corresponding path program 1 times [2020-10-16 11:23:18,669 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:23:18,669 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241812410] [2020-10-16 11:23:18,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:23:18,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:23:18,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:23:18,731 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241812410] [2020-10-16 11:23:18,731 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:23:18,731 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 11:23:18,732 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229565462] [2020-10-16 11:23:18,732 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 11:23:18,732 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:23:18,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 11:23:18,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 11:23:18,733 INFO L87 Difference]: Start difference. First operand 171 states and 418 transitions. Second operand 5 states. [2020-10-16 11:23:18,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:23:18,796 INFO L93 Difference]: Finished difference Result 205 states and 460 transitions. [2020-10-16 11:23:18,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 11:23:18,797 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-10-16 11:23:18,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:23:18,800 INFO L225 Difference]: With dead ends: 205 [2020-10-16 11:23:18,800 INFO L226 Difference]: Without dead ends: 201 [2020-10-16 11:23:18,800 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-16 11:23:18,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2020-10-16 11:23:18,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 162. [2020-10-16 11:23:18,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-10-16 11:23:18,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 399 transitions. [2020-10-16 11:23:18,819 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 399 transitions. Word has length 9 [2020-10-16 11:23:18,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:23:18,820 INFO L481 AbstractCegarLoop]: Abstraction has 162 states and 399 transitions. [2020-10-16 11:23:18,820 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 11:23:18,820 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 399 transitions. [2020-10-16 11:23:18,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 11:23:18,821 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:23:18,821 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:23:18,822 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-16 11:23:18,822 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:23:18,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:23:18,822 INFO L82 PathProgramCache]: Analyzing trace with hash 583411714, now seen corresponding path program 1 times [2020-10-16 11:23:18,823 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:23:18,823 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753017062] [2020-10-16 11:23:18,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:23:18,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:23:18,870 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 11:23:18,870 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753017062] [2020-10-16 11:23:18,871 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:23:18,871 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 11:23:18,871 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960630669] [2020-10-16 11:23:18,871 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 11:23:18,872 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:23:18,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 11:23:18,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 11:23:18,872 INFO L87 Difference]: Start difference. First operand 162 states and 399 transitions. Second operand 5 states. [2020-10-16 11:23:18,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:23:18,924 INFO L93 Difference]: Finished difference Result 189 states and 423 transitions. [2020-10-16 11:23:18,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 11:23:18,925 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-10-16 11:23:18,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:23:18,926 INFO L225 Difference]: With dead ends: 189 [2020-10-16 11:23:18,927 INFO L226 Difference]: Without dead ends: 185 [2020-10-16 11:23:18,927 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-16 11:23:18,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2020-10-16 11:23:18,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 153. [2020-10-16 11:23:18,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2020-10-16 11:23:18,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 367 transitions. [2020-10-16 11:23:18,941 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 367 transitions. Word has length 13 [2020-10-16 11:23:18,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:23:18,942 INFO L481 AbstractCegarLoop]: Abstraction has 153 states and 367 transitions. [2020-10-16 11:23:18,942 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 11:23:18,942 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 367 transitions. [2020-10-16 11:23:18,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 11:23:18,944 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:23:18,944 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:23:18,944 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-16 11:23:18,944 INFO L429 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:23:18,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:23:18,945 INFO L82 PathProgramCache]: Analyzing trace with hash 903154619, now seen corresponding path program 1 times [2020-10-16 11:23:18,945 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:23:18,945 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150183768] [2020-10-16 11:23:18,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:23:18,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 11:23:18,983 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 11:23:19,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 11:23:19,006 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 11:23:19,020 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-16 11:23:19,021 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-16 11:23:19,021 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-16 11:23:19,022 WARN L371 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-16 11:23:19,023 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2020-10-16 11:23:19,040 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,040 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,041 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,041 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,041 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,041 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,041 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,042 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,042 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,043 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,043 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,043 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,043 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,043 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,044 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,044 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,044 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,044 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,044 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,044 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,045 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,045 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,046 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,046 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,046 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,046 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,046 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,048 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,048 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,048 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,048 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,048 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,048 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,049 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,049 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,049 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,049 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,049 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,049 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,050 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,050 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,051 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,051 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,051 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,051 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,051 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,051 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,051 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,052 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,052 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,052 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,052 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,053 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,053 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,053 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,053 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,053 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,053 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,053 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,054 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,054 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,054 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,055 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,055 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,055 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,055 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,055 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,056 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,061 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,062 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,062 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,062 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,062 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,065 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,066 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,066 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,066 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,066 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,068 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,069 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,069 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,069 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,069 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,069 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,070 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,071 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,071 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,071 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,071 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,071 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,075 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,076 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,076 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,076 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,076 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,076 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:19,077 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-16 11:23:19,077 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-10-16 11:23:19,077 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 11:23:19,077 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-16 11:23:19,078 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-16 11:23:19,078 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 11:23:19,078 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 11:23:19,078 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 11:23:19,078 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 11:23:19,078 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 11:23:19,080 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-16 11:23:19,081 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 97 places, 87 transitions, 216 flow [2020-10-16 11:23:19,081 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 97 places, 87 transitions, 216 flow [2020-10-16 11:23:19,081 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 97 places, 87 transitions, 216 flow [2020-10-16 11:23:19,100 INFO L129 PetriNetUnfolder]: 5/105 cut-off events. [2020-10-16 11:23:19,100 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2020-10-16 11:23:19,102 INFO L80 FinitePrefix]: Finished finitePrefix Result has 126 conditions, 105 events. 5/105 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 187 event pairs, 0 based on Foata normal form. 0/95 useless extension candidates. Maximal degree in co-relation 119. Up to 8 conditions per place. [2020-10-16 11:23:19,104 INFO L117 LiptonReduction]: Number of co-enabled transitions 1608 [2020-10-16 11:23:20,519 INFO L132 LiptonReduction]: Checked pairs total: 2157 [2020-10-16 11:23:20,519 INFO L134 LiptonReduction]: Total number of compositions: 77 [2020-10-16 11:23:20,520 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 41 places, 27 transitions, 96 flow [2020-10-16 11:23:20,547 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 683 states. [2020-10-16 11:23:20,547 INFO L276 IsEmpty]: Start isEmpty. Operand 683 states. [2020-10-16 11:23:20,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-10-16 11:23:20,548 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:23:20,548 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-10-16 11:23:20,548 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:23:20,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:23:20,549 INFO L82 PathProgramCache]: Analyzing trace with hash 535749, now seen corresponding path program 1 times [2020-10-16 11:23:20,549 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:23:20,549 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950694794] [2020-10-16 11:23:20,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:23:20,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:23:20,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:23:20,573 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950694794] [2020-10-16 11:23:20,573 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:23:20,573 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 11:23:20,574 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173587754] [2020-10-16 11:23:20,574 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 11:23:20,574 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:23:20,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 11:23:20,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 11:23:20,575 INFO L87 Difference]: Start difference. First operand 683 states. Second operand 3 states. [2020-10-16 11:23:20,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:23:20,610 INFO L93 Difference]: Finished difference Result 600 states and 1886 transitions. [2020-10-16 11:23:20,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 11:23:20,613 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-10-16 11:23:20,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:23:20,619 INFO L225 Difference]: With dead ends: 600 [2020-10-16 11:23:20,619 INFO L226 Difference]: Without dead ends: 559 [2020-10-16 11:23:20,620 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 11:23:20,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 559 states. [2020-10-16 11:23:20,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 559 to 559. [2020-10-16 11:23:20,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 559 states. [2020-10-16 11:23:20,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 559 states to 559 states and 1737 transitions. [2020-10-16 11:23:20,659 INFO L78 Accepts]: Start accepts. Automaton has 559 states and 1737 transitions. Word has length 3 [2020-10-16 11:23:20,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:23:20,660 INFO L481 AbstractCegarLoop]: Abstraction has 559 states and 1737 transitions. [2020-10-16 11:23:20,660 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 11:23:20,660 INFO L276 IsEmpty]: Start isEmpty. Operand 559 states and 1737 transitions. [2020-10-16 11:23:20,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-16 11:23:20,660 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:23:20,661 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:23:20,661 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-16 11:23:20,661 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:23:20,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:23:20,661 INFO L82 PathProgramCache]: Analyzing trace with hash -404806880, now seen corresponding path program 1 times [2020-10-16 11:23:20,662 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:23:20,662 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036578955] [2020-10-16 11:23:20,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:23:20,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:23:20,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:23:20,705 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036578955] [2020-10-16 11:23:20,705 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:23:20,705 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 11:23:20,706 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330077127] [2020-10-16 11:23:20,706 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 11:23:20,706 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:23:20,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 11:23:20,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 11:23:20,707 INFO L87 Difference]: Start difference. First operand 559 states and 1737 transitions. Second operand 5 states. [2020-10-16 11:23:20,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:23:20,786 INFO L93 Difference]: Finished difference Result 817 states and 2317 transitions. [2020-10-16 11:23:20,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 11:23:20,787 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-10-16 11:23:20,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:23:20,794 INFO L225 Difference]: With dead ends: 817 [2020-10-16 11:23:20,794 INFO L226 Difference]: Without dead ends: 812 [2020-10-16 11:23:20,794 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-16 11:23:20,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 812 states. [2020-10-16 11:23:20,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 812 to 585. [2020-10-16 11:23:20,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 585 states. [2020-10-16 11:23:20,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 585 states to 585 states and 1832 transitions. [2020-10-16 11:23:20,825 INFO L78 Accepts]: Start accepts. Automaton has 585 states and 1832 transitions. Word has length 9 [2020-10-16 11:23:20,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:23:20,825 INFO L481 AbstractCegarLoop]: Abstraction has 585 states and 1832 transitions. [2020-10-16 11:23:20,826 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 11:23:20,826 INFO L276 IsEmpty]: Start isEmpty. Operand 585 states and 1832 transitions. [2020-10-16 11:23:20,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 11:23:20,827 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:23:20,827 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:23:20,827 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-16 11:23:20,828 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:23:20,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:23:20,828 INFO L82 PathProgramCache]: Analyzing trace with hash -669323978, now seen corresponding path program 1 times [2020-10-16 11:23:20,828 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:23:20,828 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494118656] [2020-10-16 11:23:20,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:23:20,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:23:20,862 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 11:23:20,862 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494118656] [2020-10-16 11:23:20,863 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:23:20,863 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 11:23:20,863 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100557516] [2020-10-16 11:23:20,863 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 11:23:20,864 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:23:20,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 11:23:20,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 11:23:20,864 INFO L87 Difference]: Start difference. First operand 585 states and 1832 transitions. Second operand 5 states. [2020-10-16 11:23:20,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:23:20,930 INFO L93 Difference]: Finished difference Result 843 states and 2406 transitions. [2020-10-16 11:23:20,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 11:23:20,931 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-10-16 11:23:20,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:23:20,937 INFO L225 Difference]: With dead ends: 843 [2020-10-16 11:23:20,938 INFO L226 Difference]: Without dead ends: 836 [2020-10-16 11:23:20,938 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-16 11:23:20,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 836 states. [2020-10-16 11:23:20,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 836 to 611. [2020-10-16 11:23:20,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 611 states. [2020-10-16 11:23:20,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 611 states to 611 states and 1906 transitions. [2020-10-16 11:23:20,967 INFO L78 Accepts]: Start accepts. Automaton has 611 states and 1906 transitions. Word has length 13 [2020-10-16 11:23:20,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:23:20,967 INFO L481 AbstractCegarLoop]: Abstraction has 611 states and 1906 transitions. [2020-10-16 11:23:20,967 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 11:23:20,967 INFO L276 IsEmpty]: Start isEmpty. Operand 611 states and 1906 transitions. [2020-10-16 11:23:20,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 11:23:20,969 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:23:20,969 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:23:20,969 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-16 11:23:20,969 INFO L429 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:23:20,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:23:20,970 INFO L82 PathProgramCache]: Analyzing trace with hash -56737855, now seen corresponding path program 1 times [2020-10-16 11:23:20,970 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:23:20,970 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733547709] [2020-10-16 11:23:20,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:23:21,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:23:21,039 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:23:21,039 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733547709] [2020-10-16 11:23:21,040 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1173626334] [2020-10-16 11:23:21,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 11:23:21,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:23:21,104 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-16 11:23:21,106 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:23:21,153 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:23:21,153 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 11:23:21,154 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-10-16 11:23:21,154 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807568952] [2020-10-16 11:23:21,154 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 11:23:21,155 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:23:21,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 11:23:21,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-16 11:23:21,155 INFO L87 Difference]: Start difference. First operand 611 states and 1906 transitions. Second operand 9 states. [2020-10-16 11:23:21,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:23:21,334 INFO L93 Difference]: Finished difference Result 1059 states and 2818 transitions. [2020-10-16 11:23:21,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 11:23:21,334 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 15 [2020-10-16 11:23:21,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:23:21,342 INFO L225 Difference]: With dead ends: 1059 [2020-10-16 11:23:21,342 INFO L226 Difference]: Without dead ends: 1052 [2020-10-16 11:23:21,342 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=89, Invalid=183, Unknown=0, NotChecked=0, Total=272 [2020-10-16 11:23:21,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1052 states. [2020-10-16 11:23:21,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1052 to 591. [2020-10-16 11:23:21,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 591 states. [2020-10-16 11:23:21,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 591 states to 591 states and 1840 transitions. [2020-10-16 11:23:21,376 INFO L78 Accepts]: Start accepts. Automaton has 591 states and 1840 transitions. Word has length 15 [2020-10-16 11:23:21,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:23:21,376 INFO L481 AbstractCegarLoop]: Abstraction has 591 states and 1840 transitions. [2020-10-16 11:23:21,377 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 11:23:21,377 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states and 1840 transitions. [2020-10-16 11:23:21,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 11:23:21,378 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:23:21,378 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:23:21,592 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2020-10-16 11:23:21,593 INFO L429 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:23:21,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:23:21,593 INFO L82 PathProgramCache]: Analyzing trace with hash 1024744543, now seen corresponding path program 2 times [2020-10-16 11:23:21,593 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:23:21,594 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823304346] [2020-10-16 11:23:21,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:23:21,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:23:21,638 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 11:23:21,639 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823304346] [2020-10-16 11:23:21,639 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:23:21,639 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-16 11:23:21,639 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706658980] [2020-10-16 11:23:21,640 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 11:23:21,640 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:23:21,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 11:23:21,640 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-16 11:23:21,641 INFO L87 Difference]: Start difference. First operand 591 states and 1840 transitions. Second operand 7 states. [2020-10-16 11:23:21,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:23:21,794 INFO L93 Difference]: Finished difference Result 1053 states and 2807 transitions. [2020-10-16 11:23:21,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 11:23:21,795 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-10-16 11:23:21,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:23:21,802 INFO L225 Difference]: With dead ends: 1053 [2020-10-16 11:23:21,803 INFO L226 Difference]: Without dead ends: 1045 [2020-10-16 11:23:21,803 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-10-16 11:23:21,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1045 states. [2020-10-16 11:23:21,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1045 to 536. [2020-10-16 11:23:21,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 536 states. [2020-10-16 11:23:21,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 536 states to 536 states and 1688 transitions. [2020-10-16 11:23:21,832 INFO L78 Accepts]: Start accepts. Automaton has 536 states and 1688 transitions. Word has length 15 [2020-10-16 11:23:21,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:23:21,833 INFO L481 AbstractCegarLoop]: Abstraction has 536 states and 1688 transitions. [2020-10-16 11:23:21,833 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 11:23:21,833 INFO L276 IsEmpty]: Start isEmpty. Operand 536 states and 1688 transitions. [2020-10-16 11:23:21,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-16 11:23:21,834 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:23:21,834 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:23:21,835 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-16 11:23:21,835 INFO L429 AbstractCegarLoop]: === Iteration 6 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:23:21,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:23:21,835 INFO L82 PathProgramCache]: Analyzing trace with hash 68174732, now seen corresponding path program 1 times [2020-10-16 11:23:21,836 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:23:21,836 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928739800] [2020-10-16 11:23:21,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:23:21,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:23:21,870 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-16 11:23:21,871 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928739800] [2020-10-16 11:23:21,871 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:23:21,871 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 11:23:21,872 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796862385] [2020-10-16 11:23:21,872 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 11:23:21,872 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:23:21,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 11:23:21,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 11:23:21,873 INFO L87 Difference]: Start difference. First operand 536 states and 1688 transitions. Second operand 5 states. [2020-10-16 11:23:21,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:23:21,937 INFO L93 Difference]: Finished difference Result 736 states and 2123 transitions. [2020-10-16 11:23:21,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 11:23:21,938 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-10-16 11:23:21,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:23:21,943 INFO L225 Difference]: With dead ends: 736 [2020-10-16 11:23:21,943 INFO L226 Difference]: Without dead ends: 728 [2020-10-16 11:23:21,944 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-16 11:23:21,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 728 states. [2020-10-16 11:23:21,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 728 to 549. [2020-10-16 11:23:21,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 549 states. [2020-10-16 11:23:21,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 549 states to 549 states and 1684 transitions. [2020-10-16 11:23:21,965 INFO L78 Accepts]: Start accepts. Automaton has 549 states and 1684 transitions. Word has length 17 [2020-10-16 11:23:21,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:23:21,966 INFO L481 AbstractCegarLoop]: Abstraction has 549 states and 1684 transitions. [2020-10-16 11:23:21,966 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 11:23:21,966 INFO L276 IsEmpty]: Start isEmpty. Operand 549 states and 1684 transitions. [2020-10-16 11:23:21,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-16 11:23:21,967 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:23:21,967 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:23:21,967 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-16 11:23:21,968 INFO L429 AbstractCegarLoop]: === Iteration 7 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:23:21,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:23:21,968 INFO L82 PathProgramCache]: Analyzing trace with hash 2109628021, now seen corresponding path program 1 times [2020-10-16 11:23:21,968 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:23:21,969 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755660210] [2020-10-16 11:23:21,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:23:21,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 11:23:21,979 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 11:23:21,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 11:23:21,987 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 11:23:21,993 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-16 11:23:21,993 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-16 11:23:21,993 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-16 11:23:21,994 WARN L371 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-16 11:23:21,994 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2020-10-16 11:23:22,006 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,006 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,006 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,006 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,007 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,007 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,007 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,007 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,007 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,008 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,008 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,008 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,008 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,008 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,008 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,008 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,009 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,009 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,009 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,009 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,009 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,009 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,010 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,010 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,010 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,010 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,010 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,010 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,010 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,011 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,011 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,011 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,011 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,011 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,011 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,011 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,012 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,012 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,012 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,012 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,012 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,012 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,012 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,013 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,013 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,013 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,013 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,013 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,013 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,014 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,014 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,014 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,014 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,014 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,014 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,014 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,015 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,015 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,015 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,015 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,015 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,015 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,016 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,016 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,016 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,016 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,016 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,016 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,016 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,017 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,017 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,017 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,017 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,017 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,017 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,018 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,018 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,018 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,018 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,018 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,018 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,018 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,019 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,019 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,019 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,019 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,019 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,019 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,019 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,021 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,021 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,021 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,021 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,021 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,022 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,022 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,022 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,022 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,022 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,026 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,027 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,027 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,027 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,027 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,028 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,029 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,029 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,029 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,029 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,029 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,032 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,032 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,032 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,032 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,033 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,033 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,034 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,034 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,034 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,034 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,034 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,034 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,035 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,036 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,036 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,036 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,036 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,036 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:22,038 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-16 11:23:22,038 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-10-16 11:23:22,038 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 11:23:22,038 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-16 11:23:22,038 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-16 11:23:22,038 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 11:23:22,039 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 11:23:22,039 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 11:23:22,039 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 11:23:22,039 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 11:23:22,042 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-16 11:23:22,042 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 118 places, 105 transitions, 274 flow [2020-10-16 11:23:22,042 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 118 places, 105 transitions, 274 flow [2020-10-16 11:23:22,042 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 118 places, 105 transitions, 274 flow [2020-10-16 11:23:22,064 INFO L129 PetriNetUnfolder]: 6/127 cut-off events. [2020-10-16 11:23:22,064 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2020-10-16 11:23:22,066 INFO L80 FinitePrefix]: Finished finitePrefix Result has 156 conditions, 127 events. 6/127 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 211 event pairs, 0 based on Foata normal form. 0/115 useless extension candidates. Maximal degree in co-relation 147. Up to 10 conditions per place. [2020-10-16 11:23:22,070 INFO L117 LiptonReduction]: Number of co-enabled transitions 2192 [2020-10-16 11:23:23,761 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 58 [2020-10-16 11:23:23,821 INFO L132 LiptonReduction]: Checked pairs total: 2978 [2020-10-16 11:23:23,821 INFO L134 LiptonReduction]: Total number of compositions: 97 [2020-10-16 11:23:23,822 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 51 places, 33 transitions, 130 flow [2020-10-16 11:23:23,935 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 2060 states. [2020-10-16 11:23:23,935 INFO L276 IsEmpty]: Start isEmpty. Operand 2060 states. [2020-10-16 11:23:23,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-10-16 11:23:23,935 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:23:23,935 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-10-16 11:23:23,936 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 11:23:23,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:23:23,936 INFO L82 PathProgramCache]: Analyzing trace with hash 753552, now seen corresponding path program 1 times [2020-10-16 11:23:23,936 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:23:23,937 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374287415] [2020-10-16 11:23:23,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:23:23,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:23:23,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:23:23,950 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374287415] [2020-10-16 11:23:23,951 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:23:23,951 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 11:23:23,951 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342585041] [2020-10-16 11:23:23,951 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 11:23:23,951 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:23:23,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 11:23:23,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 11:23:23,952 INFO L87 Difference]: Start difference. First operand 2060 states. Second operand 3 states. [2020-10-16 11:23:23,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:23:23,989 INFO L93 Difference]: Finished difference Result 1889 states and 7217 transitions. [2020-10-16 11:23:23,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 11:23:23,990 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-10-16 11:23:23,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:23:24,008 INFO L225 Difference]: With dead ends: 1889 [2020-10-16 11:23:24,008 INFO L226 Difference]: Without dead ends: 1767 [2020-10-16 11:23:24,008 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 11:23:24,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1767 states. [2020-10-16 11:23:24,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1767 to 1767. [2020-10-16 11:23:24,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1767 states. [2020-10-16 11:23:24,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1767 states to 1767 states and 6690 transitions. [2020-10-16 11:23:24,097 INFO L78 Accepts]: Start accepts. Automaton has 1767 states and 6690 transitions. Word has length 3 [2020-10-16 11:23:24,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:23:24,097 INFO L481 AbstractCegarLoop]: Abstraction has 1767 states and 6690 transitions. [2020-10-16 11:23:24,098 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 11:23:24,098 INFO L276 IsEmpty]: Start isEmpty. Operand 1767 states and 6690 transitions. [2020-10-16 11:23:24,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-16 11:23:24,098 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:23:24,098 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:23:24,098 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-16 11:23:24,099 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 11:23:24,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:23:24,099 INFO L82 PathProgramCache]: Analyzing trace with hash -260829075, now seen corresponding path program 1 times [2020-10-16 11:23:24,099 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:23:24,099 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805659637] [2020-10-16 11:23:24,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:23:24,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:23:24,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:23:24,128 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805659637] [2020-10-16 11:23:24,129 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:23:24,129 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 11:23:24,129 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364913674] [2020-10-16 11:23:24,129 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 11:23:24,130 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:23:24,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 11:23:24,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 11:23:24,130 INFO L87 Difference]: Start difference. First operand 1767 states and 6690 transitions. Second operand 5 states. [2020-10-16 11:23:24,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:23:24,206 INFO L93 Difference]: Finished difference Result 2905 states and 10138 transitions. [2020-10-16 11:23:24,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 11:23:24,206 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-10-16 11:23:24,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:23:24,231 INFO L225 Difference]: With dead ends: 2905 [2020-10-16 11:23:24,231 INFO L226 Difference]: Without dead ends: 2899 [2020-10-16 11:23:24,231 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-16 11:23:24,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2899 states. [2020-10-16 11:23:24,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2899 to 1966. [2020-10-16 11:23:24,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1966 states. [2020-10-16 11:23:24,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1966 states to 1966 states and 7503 transitions. [2020-10-16 11:23:24,343 INFO L78 Accepts]: Start accepts. Automaton has 1966 states and 7503 transitions. Word has length 9 [2020-10-16 11:23:24,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:23:24,344 INFO L481 AbstractCegarLoop]: Abstraction has 1966 states and 7503 transitions. [2020-10-16 11:23:24,344 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 11:23:24,344 INFO L276 IsEmpty]: Start isEmpty. Operand 1966 states and 7503 transitions. [2020-10-16 11:23:24,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 11:23:24,345 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:23:24,345 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:23:24,345 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-16 11:23:24,345 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 11:23:24,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:23:24,346 INFO L82 PathProgramCache]: Analyzing trace with hash -1408743431, now seen corresponding path program 1 times [2020-10-16 11:23:24,346 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:23:24,346 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384720177] [2020-10-16 11:23:24,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:23:24,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:23:24,382 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 11:23:24,382 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384720177] [2020-10-16 11:23:24,382 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:23:24,383 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 11:23:24,383 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580862566] [2020-10-16 11:23:24,383 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 11:23:24,383 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:23:24,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 11:23:24,384 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 11:23:24,384 INFO L87 Difference]: Start difference. First operand 1966 states and 7503 transitions. Second operand 5 states. [2020-10-16 11:23:24,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:23:24,514 INFO L93 Difference]: Finished difference Result 3204 states and 11312 transitions. [2020-10-16 11:23:24,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 11:23:24,515 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-10-16 11:23:24,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:23:24,552 INFO L225 Difference]: With dead ends: 3204 [2020-10-16 11:23:24,553 INFO L226 Difference]: Without dead ends: 3194 [2020-10-16 11:23:24,553 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-16 11:23:24,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3194 states. [2020-10-16 11:23:24,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3194 to 2200. [2020-10-16 11:23:24,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2200 states. [2020-10-16 11:23:24,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2200 states to 2200 states and 8453 transitions. [2020-10-16 11:23:24,664 INFO L78 Accepts]: Start accepts. Automaton has 2200 states and 8453 transitions. Word has length 13 [2020-10-16 11:23:24,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:23:24,666 INFO L481 AbstractCegarLoop]: Abstraction has 2200 states and 8453 transitions. [2020-10-16 11:23:24,666 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 11:23:24,666 INFO L276 IsEmpty]: Start isEmpty. Operand 2200 states and 8453 transitions. [2020-10-16 11:23:24,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 11:23:24,667 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:23:24,668 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:23:24,668 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-16 11:23:24,668 INFO L429 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 11:23:24,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:23:24,668 INFO L82 PathProgramCache]: Analyzing trace with hash 1555768808, now seen corresponding path program 1 times [2020-10-16 11:23:24,668 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:23:24,669 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795331806] [2020-10-16 11:23:24,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:23:24,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:23:24,719 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:23:24,720 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795331806] [2020-10-16 11:23:24,720 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1695378131] [2020-10-16 11:23:24,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 11:23:24,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:23:24,790 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-16 11:23:24,791 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:23:24,816 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:23:24,816 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 11:23:24,816 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-10-16 11:23:24,817 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014718534] [2020-10-16 11:23:24,817 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 11:23:24,817 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:23:24,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 11:23:24,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-16 11:23:24,818 INFO L87 Difference]: Start difference. First operand 2200 states and 8453 transitions. Second operand 9 states. [2020-10-16 11:23:25,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:23:25,051 INFO L93 Difference]: Finished difference Result 4556 states and 14911 transitions. [2020-10-16 11:23:25,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 11:23:25,051 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 15 [2020-10-16 11:23:25,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:23:25,084 INFO L225 Difference]: With dead ends: 4556 [2020-10-16 11:23:25,085 INFO L226 Difference]: Without dead ends: 4546 [2020-10-16 11:23:25,087 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=89, Invalid=183, Unknown=0, NotChecked=0, Total=272 [2020-10-16 11:23:25,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4546 states. [2020-10-16 11:23:25,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4546 to 2157. [2020-10-16 11:23:25,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2157 states. [2020-10-16 11:23:25,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2157 states to 2157 states and 8278 transitions. [2020-10-16 11:23:25,215 INFO L78 Accepts]: Start accepts. Automaton has 2157 states and 8278 transitions. Word has length 15 [2020-10-16 11:23:25,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:23:25,215 INFO L481 AbstractCegarLoop]: Abstraction has 2157 states and 8278 transitions. [2020-10-16 11:23:25,215 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 11:23:25,215 INFO L276 IsEmpty]: Start isEmpty. Operand 2157 states and 8278 transitions. [2020-10-16 11:23:25,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 11:23:25,216 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:23:25,216 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:23:25,430 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-10-16 11:23:25,431 INFO L429 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 11:23:25,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:23:25,431 INFO L82 PathProgramCache]: Analyzing trace with hash -887756896, now seen corresponding path program 2 times [2020-10-16 11:23:25,431 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:23:25,431 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919929120] [2020-10-16 11:23:25,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:23:25,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:23:25,471 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 11:23:25,471 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919929120] [2020-10-16 11:23:25,472 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:23:25,472 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-16 11:23:25,472 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482322223] [2020-10-16 11:23:25,472 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 11:23:25,473 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:23:25,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 11:23:25,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-16 11:23:25,473 INFO L87 Difference]: Start difference. First operand 2157 states and 8278 transitions. Second operand 7 states. [2020-10-16 11:23:25,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:23:25,693 INFO L93 Difference]: Finished difference Result 4612 states and 15111 transitions. [2020-10-16 11:23:25,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 11:23:25,693 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-10-16 11:23:25,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:23:25,710 INFO L225 Difference]: With dead ends: 4612 [2020-10-16 11:23:25,710 INFO L226 Difference]: Without dead ends: 4601 [2020-10-16 11:23:25,712 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-10-16 11:23:25,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4601 states. [2020-10-16 11:23:25,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4601 to 2035. [2020-10-16 11:23:25,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2035 states. [2020-10-16 11:23:25,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2035 states to 2035 states and 7845 transitions. [2020-10-16 11:23:25,866 INFO L78 Accepts]: Start accepts. Automaton has 2035 states and 7845 transitions. Word has length 15 [2020-10-16 11:23:25,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:23:25,867 INFO L481 AbstractCegarLoop]: Abstraction has 2035 states and 7845 transitions. [2020-10-16 11:23:25,867 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 11:23:25,867 INFO L276 IsEmpty]: Start isEmpty. Operand 2035 states and 7845 transitions. [2020-10-16 11:23:25,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-16 11:23:25,868 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:23:25,868 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:23:25,868 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-16 11:23:25,868 INFO L429 AbstractCegarLoop]: === Iteration 6 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 11:23:25,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:23:25,869 INFO L82 PathProgramCache]: Analyzing trace with hash 695111130, now seen corresponding path program 1 times [2020-10-16 11:23:25,870 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:23:25,871 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515237707] [2020-10-16 11:23:25,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:23:25,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:23:25,924 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-16 11:23:25,925 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515237707] [2020-10-16 11:23:25,925 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:23:25,925 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 11:23:25,925 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967956467] [2020-10-16 11:23:25,926 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 11:23:25,926 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:23:25,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 11:23:25,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 11:23:25,926 INFO L87 Difference]: Start difference. First operand 2035 states and 7845 transitions. Second operand 5 states. [2020-10-16 11:23:26,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:23:26,005 INFO L93 Difference]: Finished difference Result 3265 states and 11681 transitions. [2020-10-16 11:23:26,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 11:23:26,005 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-10-16 11:23:26,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:23:26,019 INFO L225 Difference]: With dead ends: 3265 [2020-10-16 11:23:26,019 INFO L226 Difference]: Without dead ends: 3250 [2020-10-16 11:23:26,020 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-16 11:23:26,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3250 states. [2020-10-16 11:23:26,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3250 to 2281. [2020-10-16 11:23:26,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2281 states. [2020-10-16 11:23:26,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2281 states to 2281 states and 8755 transitions. [2020-10-16 11:23:26,106 INFO L78 Accepts]: Start accepts. Automaton has 2281 states and 8755 transitions. Word has length 17 [2020-10-16 11:23:26,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:23:26,106 INFO L481 AbstractCegarLoop]: Abstraction has 2281 states and 8755 transitions. [2020-10-16 11:23:26,106 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 11:23:26,106 INFO L276 IsEmpty]: Start isEmpty. Operand 2281 states and 8755 transitions. [2020-10-16 11:23:26,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-16 11:23:26,107 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:23:26,108 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:23:26,108 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-16 11:23:26,108 INFO L429 AbstractCegarLoop]: === Iteration 7 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 11:23:26,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:23:26,108 INFO L82 PathProgramCache]: Analyzing trace with hash 1754455113, now seen corresponding path program 1 times [2020-10-16 11:23:26,109 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:23:26,109 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825589638] [2020-10-16 11:23:26,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:23:26,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:23:26,148 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-16 11:23:26,148 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825589638] [2020-10-16 11:23:26,149 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [422379651] [2020-10-16 11:23:26,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 11:23:26,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:23:26,220 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-16 11:23:26,221 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:23:26,246 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-16 11:23:26,246 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 11:23:26,246 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-10-16 11:23:26,246 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705464588] [2020-10-16 11:23:26,247 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 11:23:26,247 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:23:26,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 11:23:26,248 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-16 11:23:26,248 INFO L87 Difference]: Start difference. First operand 2281 states and 8755 transitions. Second operand 9 states. [2020-10-16 11:23:26,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:23:26,475 INFO L93 Difference]: Finished difference Result 4825 states and 15986 transitions. [2020-10-16 11:23:26,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 11:23:26,475 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 19 [2020-10-16 11:23:26,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:23:26,490 INFO L225 Difference]: With dead ends: 4825 [2020-10-16 11:23:26,490 INFO L226 Difference]: Without dead ends: 4813 [2020-10-16 11:23:26,491 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=89, Invalid=183, Unknown=0, NotChecked=0, Total=272 [2020-10-16 11:23:26,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4813 states. [2020-10-16 11:23:26,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4813 to 2305. [2020-10-16 11:23:26,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2305 states. [2020-10-16 11:23:26,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2305 states to 2305 states and 8815 transitions. [2020-10-16 11:23:26,600 INFO L78 Accepts]: Start accepts. Automaton has 2305 states and 8815 transitions. Word has length 19 [2020-10-16 11:23:26,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:23:26,600 INFO L481 AbstractCegarLoop]: Abstraction has 2305 states and 8815 transitions. [2020-10-16 11:23:26,600 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 11:23:26,600 INFO L276 IsEmpty]: Start isEmpty. Operand 2305 states and 8815 transitions. [2020-10-16 11:23:26,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-16 11:23:26,601 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:23:26,602 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:23:26,816 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 11:23:26,817 INFO L429 AbstractCegarLoop]: === Iteration 8 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 11:23:26,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:23:26,817 INFO L82 PathProgramCache]: Analyzing trace with hash -131464925, now seen corresponding path program 1 times [2020-10-16 11:23:26,817 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:23:26,817 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035696449] [2020-10-16 11:23:26,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:23:26,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:23:26,859 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-16 11:23:26,860 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035696449] [2020-10-16 11:23:26,860 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1509470823] [2020-10-16 11:23:26,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 11:23:26,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:23:26,937 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-16 11:23:26,938 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:23:27,026 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-16 11:23:27,026 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 11:23:27,027 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-10-16 11:23:27,032 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425921553] [2020-10-16 11:23:27,032 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 11:23:27,033 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:23:27,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 11:23:27,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-16 11:23:27,033 INFO L87 Difference]: Start difference. First operand 2305 states and 8815 transitions. Second operand 9 states. [2020-10-16 11:23:27,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:23:27,276 INFO L93 Difference]: Finished difference Result 4942 states and 16410 transitions. [2020-10-16 11:23:27,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 11:23:27,276 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 19 [2020-10-16 11:23:27,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:23:27,291 INFO L225 Difference]: With dead ends: 4942 [2020-10-16 11:23:27,291 INFO L226 Difference]: Without dead ends: 4925 [2020-10-16 11:23:27,297 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=89, Invalid=183, Unknown=0, NotChecked=0, Total=272 [2020-10-16 11:23:27,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4925 states. [2020-10-16 11:23:27,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4925 to 2299. [2020-10-16 11:23:27,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2299 states. [2020-10-16 11:23:27,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2299 states to 2299 states and 8782 transitions. [2020-10-16 11:23:27,409 INFO L78 Accepts]: Start accepts. Automaton has 2299 states and 8782 transitions. Word has length 19 [2020-10-16 11:23:27,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:23:27,409 INFO L481 AbstractCegarLoop]: Abstraction has 2299 states and 8782 transitions. [2020-10-16 11:23:27,409 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 11:23:27,409 INFO L276 IsEmpty]: Start isEmpty. Operand 2299 states and 8782 transitions. [2020-10-16 11:23:27,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-16 11:23:27,411 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:23:27,411 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:23:27,625 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 11:23:27,626 INFO L429 AbstractCegarLoop]: === Iteration 9 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 11:23:27,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:23:27,627 INFO L82 PathProgramCache]: Analyzing trace with hash -2013120191, now seen corresponding path program 2 times [2020-10-16 11:23:27,627 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:23:27,627 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160640050] [2020-10-16 11:23:27,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:23:27,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:23:27,677 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-16 11:23:27,677 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160640050] [2020-10-16 11:23:27,678 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:23:27,678 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-16 11:23:27,678 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632560734] [2020-10-16 11:23:27,678 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 11:23:27,679 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:23:27,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 11:23:27,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-16 11:23:27,679 INFO L87 Difference]: Start difference. First operand 2299 states and 8782 transitions. Second operand 7 states. [2020-10-16 11:23:27,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:23:27,891 INFO L93 Difference]: Finished difference Result 4934 states and 16393 transitions. [2020-10-16 11:23:27,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 11:23:27,891 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-10-16 11:23:27,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:23:27,904 INFO L225 Difference]: With dead ends: 4934 [2020-10-16 11:23:27,904 INFO L226 Difference]: Without dead ends: 4917 [2020-10-16 11:23:27,905 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-10-16 11:23:27,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4917 states. [2020-10-16 11:23:27,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4917 to 2216. [2020-10-16 11:23:27,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2216 states. [2020-10-16 11:23:28,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2216 states to 2216 states and 8477 transitions. [2020-10-16 11:23:28,006 INFO L78 Accepts]: Start accepts. Automaton has 2216 states and 8477 transitions. Word has length 19 [2020-10-16 11:23:28,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:23:28,006 INFO L481 AbstractCegarLoop]: Abstraction has 2216 states and 8477 transitions. [2020-10-16 11:23:28,006 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 11:23:28,006 INFO L276 IsEmpty]: Start isEmpty. Operand 2216 states and 8477 transitions. [2020-10-16 11:23:28,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-16 11:23:28,008 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:23:28,008 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:23:28,008 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-16 11:23:28,008 INFO L429 AbstractCegarLoop]: === Iteration 10 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 11:23:28,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:23:28,008 INFO L82 PathProgramCache]: Analyzing trace with hash -2013113743, now seen corresponding path program 2 times [2020-10-16 11:23:28,009 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:23:28,009 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253060458] [2020-10-16 11:23:28,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:23:28,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:23:28,059 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-16 11:23:28,059 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253060458] [2020-10-16 11:23:28,059 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:23:28,059 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-16 11:23:28,060 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818587565] [2020-10-16 11:23:28,060 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 11:23:28,060 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:23:28,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 11:23:28,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-16 11:23:28,061 INFO L87 Difference]: Start difference. First operand 2216 states and 8477 transitions. Second operand 7 states. [2020-10-16 11:23:28,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:23:28,256 INFO L93 Difference]: Finished difference Result 4774 states and 15828 transitions. [2020-10-16 11:23:28,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 11:23:28,256 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-10-16 11:23:28,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:23:28,270 INFO L225 Difference]: With dead ends: 4774 [2020-10-16 11:23:28,271 INFO L226 Difference]: Without dead ends: 4757 [2020-10-16 11:23:28,271 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-10-16 11:23:28,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4757 states. [2020-10-16 11:23:28,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4757 to 2150. [2020-10-16 11:23:28,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2150 states. [2020-10-16 11:23:28,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2150 states to 2150 states and 8243 transitions. [2020-10-16 11:23:28,427 INFO L78 Accepts]: Start accepts. Automaton has 2150 states and 8243 transitions. Word has length 19 [2020-10-16 11:23:28,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:23:28,427 INFO L481 AbstractCegarLoop]: Abstraction has 2150 states and 8243 transitions. [2020-10-16 11:23:28,427 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 11:23:28,427 INFO L276 IsEmpty]: Start isEmpty. Operand 2150 states and 8243 transitions. [2020-10-16 11:23:28,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-16 11:23:28,429 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:23:28,429 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:23:28,429 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-16 11:23:28,429 INFO L429 AbstractCegarLoop]: === Iteration 11 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 11:23:28,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:23:28,430 INFO L82 PathProgramCache]: Analyzing trace with hash -9146414, now seen corresponding path program 1 times [2020-10-16 11:23:28,430 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:23:28,430 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881050516] [2020-10-16 11:23:28,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:23:28,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:23:28,523 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:23:28,523 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881050516] [2020-10-16 11:23:28,523 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2109576499] [2020-10-16 11:23:28,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 11:23:28,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:23:28,587 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-16 11:23:28,588 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:23:28,629 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:23:28,629 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 11:23:28,629 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-10-16 11:23:28,630 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931277430] [2020-10-16 11:23:28,630 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 11:23:28,630 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:23:28,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 11:23:28,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-10-16 11:23:28,631 INFO L87 Difference]: Start difference. First operand 2150 states and 8243 transitions. Second operand 11 states. [2020-10-16 11:23:29,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:23:29,169 INFO L93 Difference]: Finished difference Result 6025 states and 18746 transitions. [2020-10-16 11:23:29,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 11:23:29,169 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 21 [2020-10-16 11:23:29,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:23:29,181 INFO L225 Difference]: With dead ends: 6025 [2020-10-16 11:23:29,181 INFO L226 Difference]: Without dead ends: 6017 [2020-10-16 11:23:29,182 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 256 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-10-16 11:23:29,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6017 states. [2020-10-16 11:23:29,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6017 to 2117. [2020-10-16 11:23:29,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2117 states. [2020-10-16 11:23:29,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2117 states to 2117 states and 8106 transitions. [2020-10-16 11:23:29,287 INFO L78 Accepts]: Start accepts. Automaton has 2117 states and 8106 transitions. Word has length 21 [2020-10-16 11:23:29,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:23:29,288 INFO L481 AbstractCegarLoop]: Abstraction has 2117 states and 8106 transitions. [2020-10-16 11:23:29,288 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 11:23:29,288 INFO L276 IsEmpty]: Start isEmpty. Operand 2117 states and 8106 transitions. [2020-10-16 11:23:29,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-16 11:23:29,290 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:23:29,290 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:23:29,490 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2020-10-16 11:23:29,491 INFO L429 AbstractCegarLoop]: === Iteration 12 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 11:23:29,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:23:29,492 INFO L82 PathProgramCache]: Analyzing trace with hash -1890795232, now seen corresponding path program 2 times [2020-10-16 11:23:29,492 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:23:29,492 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028992404] [2020-10-16 11:23:29,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:23:29,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:23:29,556 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-16 11:23:29,556 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028992404] [2020-10-16 11:23:29,556 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1782541590] [2020-10-16 11:23:29,556 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 11:23:29,652 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 11:23:29,653 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 11:23:29,654 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-16 11:23:29,655 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:23:29,704 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-16 11:23:29,704 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 11:23:29,705 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-10-16 11:23:29,705 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295628607] [2020-10-16 11:23:29,706 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 11:23:29,706 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:23:29,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 11:23:29,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-10-16 11:23:29,706 INFO L87 Difference]: Start difference. First operand 2117 states and 8106 transitions. Second operand 11 states. [2020-10-16 11:23:30,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:23:30,305 INFO L93 Difference]: Finished difference Result 5914 states and 18384 transitions. [2020-10-16 11:23:30,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 11:23:30,305 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 21 [2020-10-16 11:23:30,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:23:30,318 INFO L225 Difference]: With dead ends: 5914 [2020-10-16 11:23:30,319 INFO L226 Difference]: Without dead ends: 5903 [2020-10-16 11:23:30,319 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 254 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-10-16 11:23:30,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5903 states. [2020-10-16 11:23:30,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5903 to 2085. [2020-10-16 11:23:30,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2085 states. [2020-10-16 11:23:30,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2085 states to 2085 states and 7975 transitions. [2020-10-16 11:23:30,411 INFO L78 Accepts]: Start accepts. Automaton has 2085 states and 7975 transitions. Word has length 21 [2020-10-16 11:23:30,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:23:30,411 INFO L481 AbstractCegarLoop]: Abstraction has 2085 states and 7975 transitions. [2020-10-16 11:23:30,411 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 11:23:30,412 INFO L276 IsEmpty]: Start isEmpty. Operand 2085 states and 7975 transitions. [2020-10-16 11:23:30,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-16 11:23:30,414 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:23:30,414 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:23:30,629 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 11:23:30,629 INFO L429 AbstractCegarLoop]: === Iteration 13 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 11:23:30,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:23:30,630 INFO L82 PathProgramCache]: Analyzing trace with hash 180724060, now seen corresponding path program 3 times [2020-10-16 11:23:30,630 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:23:30,630 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98915503] [2020-10-16 11:23:30,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:23:30,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:23:30,684 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-16 11:23:30,685 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98915503] [2020-10-16 11:23:30,685 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2071837654] [2020-10-16 11:23:30,685 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 11:23:30,753 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-16 11:23:30,754 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 11:23:30,755 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-16 11:23:30,756 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:23:30,778 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-16 11:23:30,778 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 11:23:30,778 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-10-16 11:23:30,779 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164647718] [2020-10-16 11:23:30,779 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 11:23:30,779 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:23:30,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 11:23:30,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-10-16 11:23:30,780 INFO L87 Difference]: Start difference. First operand 2085 states and 7975 transitions. Second operand 11 states. [2020-10-16 11:23:31,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:23:31,267 INFO L93 Difference]: Finished difference Result 5907 states and 18375 transitions. [2020-10-16 11:23:31,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 11:23:31,267 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 21 [2020-10-16 11:23:31,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:23:31,276 INFO L225 Difference]: With dead ends: 5907 [2020-10-16 11:23:31,276 INFO L226 Difference]: Without dead ends: 5899 [2020-10-16 11:23:31,277 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 256 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-10-16 11:23:31,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5899 states. [2020-10-16 11:23:31,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5899 to 2008. [2020-10-16 11:23:31,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2008 states. [2020-10-16 11:23:31,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2008 states to 2008 states and 7698 transitions. [2020-10-16 11:23:31,366 INFO L78 Accepts]: Start accepts. Automaton has 2008 states and 7698 transitions. Word has length 21 [2020-10-16 11:23:31,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:23:31,366 INFO L481 AbstractCegarLoop]: Abstraction has 2008 states and 7698 transitions. [2020-10-16 11:23:31,366 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 11:23:31,367 INFO L276 IsEmpty]: Start isEmpty. Operand 2008 states and 7698 transitions. [2020-10-16 11:23:31,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-16 11:23:31,371 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:23:31,371 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:23:31,586 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2020-10-16 11:23:31,587 INFO L429 AbstractCegarLoop]: === Iteration 14 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 11:23:31,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:23:31,587 INFO L82 PathProgramCache]: Analyzing trace with hash -1783759286, now seen corresponding path program 4 times [2020-10-16 11:23:31,587 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:23:31,587 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242159795] [2020-10-16 11:23:31,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:23:31,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:23:31,651 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-16 11:23:31,652 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242159795] [2020-10-16 11:23:31,652 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [440523769] [2020-10-16 11:23:31,652 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 11:23:31,720 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 11:23:31,720 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 11:23:31,721 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-16 11:23:31,722 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:23:31,752 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-16 11:23:31,752 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 11:23:31,752 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-10-16 11:23:31,753 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752417611] [2020-10-16 11:23:31,753 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 11:23:31,753 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:23:31,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 11:23:31,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-10-16 11:23:31,754 INFO L87 Difference]: Start difference. First operand 2008 states and 7698 transitions. Second operand 11 states. [2020-10-16 11:23:32,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:23:32,334 INFO L93 Difference]: Finished difference Result 5835 states and 18155 transitions. [2020-10-16 11:23:32,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 11:23:32,335 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 21 [2020-10-16 11:23:32,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:23:32,346 INFO L225 Difference]: With dead ends: 5835 [2020-10-16 11:23:32,347 INFO L226 Difference]: Without dead ends: 5824 [2020-10-16 11:23:32,347 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 255 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-10-16 11:23:32,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5824 states. [2020-10-16 11:23:32,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5824 to 1976. [2020-10-16 11:23:32,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1976 states. [2020-10-16 11:23:32,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1976 states to 1976 states and 7567 transitions. [2020-10-16 11:23:32,431 INFO L78 Accepts]: Start accepts. Automaton has 1976 states and 7567 transitions. Word has length 21 [2020-10-16 11:23:32,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:23:32,432 INFO L481 AbstractCegarLoop]: Abstraction has 1976 states and 7567 transitions. [2020-10-16 11:23:32,432 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 11:23:32,432 INFO L276 IsEmpty]: Start isEmpty. Operand 1976 states and 7567 transitions. [2020-10-16 11:23:32,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-16 11:23:32,434 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:23:32,434 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:23:32,650 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2020-10-16 11:23:32,651 INFO L429 AbstractCegarLoop]: === Iteration 15 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 11:23:32,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:23:32,651 INFO L82 PathProgramCache]: Analyzing trace with hash -964809789, now seen corresponding path program 1 times [2020-10-16 11:23:32,651 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:23:32,651 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840797285] [2020-10-16 11:23:32,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:23:32,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:23:32,691 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-16 11:23:32,692 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840797285] [2020-10-16 11:23:32,692 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:23:32,692 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 11:23:32,692 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951678672] [2020-10-16 11:23:32,692 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 11:23:32,693 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:23:32,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 11:23:32,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 11:23:32,693 INFO L87 Difference]: Start difference. First operand 1976 states and 7567 transitions. Second operand 5 states. [2020-10-16 11:23:32,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:23:32,764 INFO L93 Difference]: Finished difference Result 3016 states and 10840 transitions. [2020-10-16 11:23:32,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 11:23:32,765 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-10-16 11:23:32,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:23:32,771 INFO L225 Difference]: With dead ends: 3016 [2020-10-16 11:23:32,772 INFO L226 Difference]: Without dead ends: 3000 [2020-10-16 11:23:32,772 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-16 11:23:32,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3000 states. [2020-10-16 11:23:32,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3000 to 2183. [2020-10-16 11:23:32,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2183 states. [2020-10-16 11:23:32,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2183 states to 2183 states and 8210 transitions. [2020-10-16 11:23:32,827 INFO L78 Accepts]: Start accepts. Automaton has 2183 states and 8210 transitions. Word has length 21 [2020-10-16 11:23:32,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:23:32,827 INFO L481 AbstractCegarLoop]: Abstraction has 2183 states and 8210 transitions. [2020-10-16 11:23:32,827 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 11:23:32,828 INFO L276 IsEmpty]: Start isEmpty. Operand 2183 states and 8210 transitions. [2020-10-16 11:23:32,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-16 11:23:32,829 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:23:32,829 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:23:32,830 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-16 11:23:32,830 INFO L429 AbstractCegarLoop]: === Iteration 16 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 11:23:32,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:23:32,830 INFO L82 PathProgramCache]: Analyzing trace with hash -1873231848, now seen corresponding path program 5 times [2020-10-16 11:23:32,830 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:23:32,831 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342439126] [2020-10-16 11:23:32,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:23:32,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:23:32,885 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-16 11:23:32,885 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342439126] [2020-10-16 11:23:32,885 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:23:32,886 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-16 11:23:32,886 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304513156] [2020-10-16 11:23:32,886 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 11:23:32,886 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:23:32,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 11:23:32,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-16 11:23:32,887 INFO L87 Difference]: Start difference. First operand 2183 states and 8210 transitions. Second operand 9 states. [2020-10-16 11:23:33,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:23:33,367 INFO L93 Difference]: Finished difference Result 6150 states and 19247 transitions. [2020-10-16 11:23:33,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 11:23:33,367 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-10-16 11:23:33,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:23:33,376 INFO L225 Difference]: With dead ends: 6150 [2020-10-16 11:23:33,376 INFO L226 Difference]: Without dead ends: 6139 [2020-10-16 11:23:33,377 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-16 11:23:33,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6139 states. [2020-10-16 11:23:33,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6139 to 2096. [2020-10-16 11:23:33,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2096 states. [2020-10-16 11:23:33,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2096 states to 2096 states and 7876 transitions. [2020-10-16 11:23:33,461 INFO L78 Accepts]: Start accepts. Automaton has 2096 states and 7876 transitions. Word has length 21 [2020-10-16 11:23:33,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:23:33,461 INFO L481 AbstractCegarLoop]: Abstraction has 2096 states and 7876 transitions. [2020-10-16 11:23:33,461 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 11:23:33,461 INFO L276 IsEmpty]: Start isEmpty. Operand 2096 states and 7876 transitions. [2020-10-16 11:23:33,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-16 11:23:33,463 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:23:33,463 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:23:33,463 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-16 11:23:33,463 INFO L429 AbstractCegarLoop]: === Iteration 17 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 11:23:33,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:23:33,463 INFO L82 PathProgramCache]: Analyzing trace with hash -1867041768, now seen corresponding path program 6 times [2020-10-16 11:23:33,463 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:23:33,463 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380390273] [2020-10-16 11:23:33,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:23:33,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:23:33,516 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-16 11:23:33,516 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380390273] [2020-10-16 11:23:33,516 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:23:33,517 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-16 11:23:33,517 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231959188] [2020-10-16 11:23:33,517 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 11:23:33,517 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:23:33,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 11:23:33,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-16 11:23:33,518 INFO L87 Difference]: Start difference. First operand 2096 states and 7876 transitions. Second operand 9 states. [2020-10-16 11:23:34,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:23:34,070 INFO L93 Difference]: Finished difference Result 6017 states and 18791 transitions. [2020-10-16 11:23:34,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 11:23:34,071 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-10-16 11:23:34,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:23:34,081 INFO L225 Difference]: With dead ends: 6017 [2020-10-16 11:23:34,081 INFO L226 Difference]: Without dead ends: 6002 [2020-10-16 11:23:34,081 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-16 11:23:34,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6002 states. [2020-10-16 11:23:34,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6002 to 1965. [2020-10-16 11:23:34,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1965 states. [2020-10-16 11:23:34,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1965 states to 1965 states and 7429 transitions. [2020-10-16 11:23:34,170 INFO L78 Accepts]: Start accepts. Automaton has 1965 states and 7429 transitions. Word has length 21 [2020-10-16 11:23:34,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:23:34,171 INFO L481 AbstractCegarLoop]: Abstraction has 1965 states and 7429 transitions. [2020-10-16 11:23:34,171 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 11:23:34,171 INFO L276 IsEmpty]: Start isEmpty. Operand 1965 states and 7429 transitions. [2020-10-16 11:23:34,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-16 11:23:34,172 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:23:34,172 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:23:34,172 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-16 11:23:34,173 INFO L429 AbstractCegarLoop]: === Iteration 18 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 11:23:34,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:23:34,173 INFO L82 PathProgramCache]: Analyzing trace with hash 150840888, now seen corresponding path program 1 times [2020-10-16 11:23:34,173 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:23:34,173 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858240302] [2020-10-16 11:23:34,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:23:34,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 11:23:34,181 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 11:23:34,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 11:23:34,187 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 11:23:34,195 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-16 11:23:34,196 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-16 11:23:34,196 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-16 11:23:34,196 WARN L371 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-16 11:23:34,196 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2020-10-16 11:23:34,210 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,210 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,210 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,211 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,211 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,211 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,211 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,211 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,211 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,212 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,212 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,212 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,212 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,212 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,212 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,212 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,213 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,213 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,213 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,213 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,213 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,213 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,214 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,214 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,214 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,214 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,214 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,214 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,214 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,215 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,215 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,215 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,215 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,215 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,215 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,215 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,216 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,216 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,216 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,216 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,216 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,216 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,216 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,217 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,217 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,217 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,217 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,217 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,217 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,218 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,218 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,218 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,218 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,218 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,218 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,219 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,219 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,219 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,219 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,219 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,219 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,219 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,220 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,220 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,220 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,220 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,220 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,220 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,220 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,221 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,221 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,221 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,221 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,222 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,222 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,222 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,222 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,222 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,222 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,222 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,222 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,223 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,223 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,223 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,223 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,224 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,224 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,224 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,224 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,224 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,224 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,224 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,224 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,225 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,225 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,225 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,225 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,225 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,226 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,226 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,226 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,226 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,226 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,226 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,226 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,227 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,227 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,227 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,227 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,227 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,230 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,231 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,231 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,231 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,231 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,243 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,244 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,244 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,244 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,244 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,245 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,245 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,246 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,246 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,246 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,247 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,247 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,247 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,247 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,247 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,249 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,249 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,249 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,249 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,249 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,249 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,251 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,251 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,251 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,251 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,251 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,251 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,253 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,253 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,253 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,253 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,254 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,254 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,255 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,256 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,256 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,256 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,256 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,256 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,258 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,258 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,258 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,258 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,258 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,258 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:23:34,259 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-16 11:23:34,259 INFO L253 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2020-10-16 11:23:34,260 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 11:23:34,261 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-16 11:23:34,261 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-16 11:23:34,261 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 11:23:34,261 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 11:23:34,261 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 11:23:34,262 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 11:23:34,262 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 11:23:34,263 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-16 11:23:34,263 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 139 places, 123 transitions, 336 flow [2020-10-16 11:23:34,264 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 139 places, 123 transitions, 336 flow [2020-10-16 11:23:34,264 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 139 places, 123 transitions, 336 flow [2020-10-16 11:23:34,316 INFO L129 PetriNetUnfolder]: 7/149 cut-off events. [2020-10-16 11:23:34,317 INFO L130 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2020-10-16 11:23:34,322 INFO L80 FinitePrefix]: Finished finitePrefix Result has 187 conditions, 149 events. 7/149 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 256 event pairs, 0 based on Foata normal form. 0/135 useless extension candidates. Maximal degree in co-relation 176. Up to 12 conditions per place. [2020-10-16 11:23:34,329 INFO L117 LiptonReduction]: Number of co-enabled transitions 2860 [2020-10-16 11:23:36,115 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 60 [2020-10-16 11:23:36,180 INFO L132 LiptonReduction]: Checked pairs total: 4168 [2020-10-16 11:23:36,180 INFO L134 LiptonReduction]: Total number of compositions: 121 [2020-10-16 11:23:36,180 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 61 places, 39 transitions, 168 flow [2020-10-16 11:23:36,765 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 6191 states. [2020-10-16 11:23:36,766 INFO L276 IsEmpty]: Start isEmpty. Operand 6191 states. [2020-10-16 11:23:36,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-10-16 11:23:36,766 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:23:36,766 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-10-16 11:23:36,766 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:23:36,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:23:36,767 INFO L82 PathProgramCache]: Analyzing trace with hash 1011964, now seen corresponding path program 1 times [2020-10-16 11:23:36,767 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:23:36,767 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024173932] [2020-10-16 11:23:36,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:23:36,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:23:36,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:23:36,780 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024173932] [2020-10-16 11:23:36,781 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:23:36,781 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 11:23:36,781 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111054360] [2020-10-16 11:23:36,781 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 11:23:36,781 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:23:36,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 11:23:36,782 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 11:23:36,782 INFO L87 Difference]: Start difference. First operand 6191 states. Second operand 3 states. [2020-10-16 11:23:36,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:23:36,851 INFO L93 Difference]: Finished difference Result 5844 states and 26316 transitions. [2020-10-16 11:23:36,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 11:23:36,852 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-10-16 11:23:36,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:23:36,873 INFO L225 Difference]: With dead ends: 5844 [2020-10-16 11:23:36,873 INFO L226 Difference]: Without dead ends: 5479 [2020-10-16 11:23:36,875 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 11:23:36,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5479 states. [2020-10-16 11:23:37,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5479 to 5479. [2020-10-16 11:23:37,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5479 states. [2020-10-16 11:23:37,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5479 states to 5479 states and 24493 transitions. [2020-10-16 11:23:37,119 INFO L78 Accepts]: Start accepts. Automaton has 5479 states and 24493 transitions. Word has length 3 [2020-10-16 11:23:37,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:23:37,119 INFO L481 AbstractCegarLoop]: Abstraction has 5479 states and 24493 transitions. [2020-10-16 11:23:37,120 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 11:23:37,120 INFO L276 IsEmpty]: Start isEmpty. Operand 5479 states and 24493 transitions. [2020-10-16 11:23:37,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-16 11:23:37,120 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:23:37,120 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:23:37,121 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-16 11:23:37,121 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:23:37,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:23:37,121 INFO L82 PathProgramCache]: Analyzing trace with hash 1084774388, now seen corresponding path program 1 times [2020-10-16 11:23:37,122 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:23:37,122 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841249813] [2020-10-16 11:23:37,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:23:37,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:23:37,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:23:37,168 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841249813] [2020-10-16 11:23:37,168 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:23:37,168 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 11:23:37,168 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023750776] [2020-10-16 11:23:37,168 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 11:23:37,169 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:23:37,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 11:23:37,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 11:23:37,169 INFO L87 Difference]: Start difference. First operand 5479 states and 24493 transitions. Second operand 5 states. [2020-10-16 11:23:37,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:23:37,336 INFO L93 Difference]: Finished difference Result 9673 states and 40333 transitions. [2020-10-16 11:23:37,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 11:23:37,338 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-10-16 11:23:37,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:23:37,372 INFO L225 Difference]: With dead ends: 9673 [2020-10-16 11:23:37,372 INFO L226 Difference]: Without dead ends: 9666 [2020-10-16 11:23:37,373 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-16 11:23:37,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9666 states. [2020-10-16 11:23:38,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9666 to 6331. [2020-10-16 11:23:38,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6331 states. [2020-10-16 11:23:38,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6331 states to 6331 states and 28544 transitions. [2020-10-16 11:23:38,288 INFO L78 Accepts]: Start accepts. Automaton has 6331 states and 28544 transitions. Word has length 9 [2020-10-16 11:23:38,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:23:38,289 INFO L481 AbstractCegarLoop]: Abstraction has 6331 states and 28544 transitions. [2020-10-16 11:23:38,289 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 11:23:38,289 INFO L276 IsEmpty]: Start isEmpty. Operand 6331 states and 28544 transitions. [2020-10-16 11:23:38,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 11:23:38,289 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:23:38,289 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:23:38,290 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-16 11:23:38,290 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:23:38,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:23:38,290 INFO L82 PathProgramCache]: Analyzing trace with hash 2112403116, now seen corresponding path program 1 times [2020-10-16 11:23:38,290 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:23:38,291 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398928619] [2020-10-16 11:23:38,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:23:38,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:23:38,326 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 11:23:38,326 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398928619] [2020-10-16 11:23:38,326 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:23:38,327 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 11:23:38,327 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234278810] [2020-10-16 11:23:38,327 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 11:23:38,327 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:23:38,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 11:23:38,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 11:23:38,328 INFO L87 Difference]: Start difference. First operand 6331 states and 28544 transitions. Second operand 5 states. [2020-10-16 11:23:38,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:23:38,459 INFO L93 Difference]: Finished difference Result 11081 states and 46826 transitions. [2020-10-16 11:23:38,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 11:23:38,460 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-10-16 11:23:38,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:23:38,484 INFO L225 Difference]: With dead ends: 11081 [2020-10-16 11:23:38,484 INFO L226 Difference]: Without dead ends: 11068 [2020-10-16 11:23:38,485 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-16 11:23:38,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11068 states. [2020-10-16 11:23:38,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11068 to 7391. [2020-10-16 11:23:38,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7391 states. [2020-10-16 11:23:38,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7391 states to 7391 states and 33694 transitions. [2020-10-16 11:23:38,716 INFO L78 Accepts]: Start accepts. Automaton has 7391 states and 33694 transitions. Word has length 13 [2020-10-16 11:23:38,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:23:38,717 INFO L481 AbstractCegarLoop]: Abstraction has 7391 states and 33694 transitions. [2020-10-16 11:23:38,717 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 11:23:38,717 INFO L276 IsEmpty]: Start isEmpty. Operand 7391 states and 33694 transitions. [2020-10-16 11:23:38,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 11:23:38,718 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:23:38,718 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:23:38,718 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-16 11:23:38,718 INFO L429 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:23:38,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:23:38,718 INFO L82 PathProgramCache]: Analyzing trace with hash -28983895, now seen corresponding path program 1 times [2020-10-16 11:23:38,719 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:23:38,719 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889826126] [2020-10-16 11:23:38,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:23:38,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:23:38,757 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:23:38,757 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889826126] [2020-10-16 11:23:38,758 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [872812593] [2020-10-16 11:23:38,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 11:23:38,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:23:38,838 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-16 11:23:38,839 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:23:38,854 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:23:38,855 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 11:23:38,855 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-10-16 11:23:38,855 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706978983] [2020-10-16 11:23:38,855 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 11:23:38,856 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:23:38,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 11:23:38,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-16 11:23:38,856 INFO L87 Difference]: Start difference. First operand 7391 states and 33694 transitions. Second operand 9 states. [2020-10-16 11:23:39,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:23:39,120 INFO L93 Difference]: Finished difference Result 16749 states and 66010 transitions. [2020-10-16 11:23:39,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 11:23:39,120 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 15 [2020-10-16 11:23:39,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:23:39,154 INFO L225 Difference]: With dead ends: 16749 [2020-10-16 11:23:39,155 INFO L226 Difference]: Without dead ends: 16736 [2020-10-16 11:23:39,155 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=89, Invalid=183, Unknown=0, NotChecked=0, Total=272 [2020-10-16 11:23:39,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16736 states. [2020-10-16 11:23:39,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16736 to 7303. [2020-10-16 11:23:39,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7303 states. [2020-10-16 11:23:39,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7303 states to 7303 states and 33260 transitions. [2020-10-16 11:23:39,585 INFO L78 Accepts]: Start accepts. Automaton has 7303 states and 33260 transitions. Word has length 15 [2020-10-16 11:23:39,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:23:39,585 INFO L481 AbstractCegarLoop]: Abstraction has 7303 states and 33260 transitions. [2020-10-16 11:23:39,585 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 11:23:39,585 INFO L276 IsEmpty]: Start isEmpty. Operand 7303 states and 33260 transitions. [2020-10-16 11:23:39,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 11:23:39,585 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:23:39,586 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:23:39,786 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 11:23:39,787 INFO L429 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:23:39,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:23:39,788 INFO L82 PathProgramCache]: Analyzing trace with hash -1500121559, now seen corresponding path program 2 times [2020-10-16 11:23:39,788 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:23:39,788 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499514246] [2020-10-16 11:23:39,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:23:39,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:23:39,829 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 11:23:39,829 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499514246] [2020-10-16 11:23:39,830 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:23:39,830 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-16 11:23:39,830 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640283488] [2020-10-16 11:23:39,830 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 11:23:39,830 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:23:39,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 11:23:39,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-16 11:23:39,833 INFO L87 Difference]: Start difference. First operand 7303 states and 33260 transitions. Second operand 7 states. [2020-10-16 11:23:40,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:23:40,093 INFO L93 Difference]: Finished difference Result 17085 states and 67393 transitions. [2020-10-16 11:23:40,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 11:23:40,093 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-10-16 11:23:40,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:23:40,129 INFO L225 Difference]: With dead ends: 17085 [2020-10-16 11:23:40,129 INFO L226 Difference]: Without dead ends: 17071 [2020-10-16 11:23:40,129 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-10-16 11:23:40,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17071 states. [2020-10-16 11:23:40,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17071 to 7048. [2020-10-16 11:23:40,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7048 states. [2020-10-16 11:23:40,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7048 states to 7048 states and 32136 transitions. [2020-10-16 11:23:40,397 INFO L78 Accepts]: Start accepts. Automaton has 7048 states and 32136 transitions. Word has length 15 [2020-10-16 11:23:40,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:23:40,397 INFO L481 AbstractCegarLoop]: Abstraction has 7048 states and 32136 transitions. [2020-10-16 11:23:40,397 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 11:23:40,397 INFO L276 IsEmpty]: Start isEmpty. Operand 7048 states and 32136 transitions. [2020-10-16 11:23:40,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-16 11:23:40,398 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:23:40,398 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:23:40,398 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-16 11:23:40,399 INFO L429 AbstractCegarLoop]: === Iteration 6 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:23:40,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:23:40,399 INFO L82 PathProgramCache]: Analyzing trace with hash -1891696605, now seen corresponding path program 1 times [2020-10-16 11:23:40,399 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:23:40,399 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846265083] [2020-10-16 11:23:40,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:23:40,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:23:40,432 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-16 11:23:40,432 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846265083] [2020-10-16 11:23:40,432 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:23:40,433 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 11:23:40,433 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867969106] [2020-10-16 11:23:40,433 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 11:23:40,434 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:23:40,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 11:23:40,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 11:23:40,434 INFO L87 Difference]: Start difference. First operand 7048 states and 32136 transitions. Second operand 5 states. [2020-10-16 11:23:40,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:23:40,590 INFO L93 Difference]: Finished difference Result 12234 states and 52488 transitions. [2020-10-16 11:23:40,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 11:23:40,590 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-10-16 11:23:40,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:23:40,643 INFO L225 Difference]: With dead ends: 12234 [2020-10-16 11:23:40,644 INFO L226 Difference]: Without dead ends: 12212 [2020-10-16 11:23:40,645 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-16 11:23:40,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12212 states. [2020-10-16 11:23:41,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12212 to 8342. [2020-10-16 11:23:41,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8342 states. [2020-10-16 11:23:41,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8342 states to 8342 states and 38278 transitions. [2020-10-16 11:23:41,183 INFO L78 Accepts]: Start accepts. Automaton has 8342 states and 38278 transitions. Word has length 17 [2020-10-16 11:23:41,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:23:41,183 INFO L481 AbstractCegarLoop]: Abstraction has 8342 states and 38278 transitions. [2020-10-16 11:23:41,183 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 11:23:41,183 INFO L276 IsEmpty]: Start isEmpty. Operand 8342 states and 38278 transitions. [2020-10-16 11:23:41,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-16 11:23:41,184 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:23:41,184 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:23:41,184 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-16 11:23:41,185 INFO L429 AbstractCegarLoop]: === Iteration 7 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:23:41,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:23:41,185 INFO L82 PathProgramCache]: Analyzing trace with hash -74039136, now seen corresponding path program 1 times [2020-10-16 11:23:41,185 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:23:41,185 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663668230] [2020-10-16 11:23:41,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:23:41,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:23:41,218 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-16 11:23:41,218 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663668230] [2020-10-16 11:23:41,218 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [564912788] [2020-10-16 11:23:41,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 11:23:41,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:23:41,308 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-16 11:23:41,309 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:23:41,331 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-16 11:23:41,331 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 11:23:41,331 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-10-16 11:23:41,331 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125455483] [2020-10-16 11:23:41,332 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 11:23:41,332 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:23:41,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 11:23:41,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-16 11:23:41,332 INFO L87 Difference]: Start difference. First operand 8342 states and 38278 transitions. Second operand 9 states. [2020-10-16 11:23:41,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:23:41,608 INFO L93 Difference]: Finished difference Result 19016 states and 76191 transitions. [2020-10-16 11:23:41,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 11:23:41,609 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 19 [2020-10-16 11:23:41,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:23:41,649 INFO L225 Difference]: With dead ends: 19016 [2020-10-16 11:23:41,649 INFO L226 Difference]: Without dead ends: 18998 [2020-10-16 11:23:41,649 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=89, Invalid=183, Unknown=0, NotChecked=0, Total=272 [2020-10-16 11:23:41,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18998 states. [2020-10-16 11:23:41,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18998 to 8452. [2020-10-16 11:23:41,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8452 states. [2020-10-16 11:23:41,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8452 states to 8452 states and 38704 transitions. [2020-10-16 11:23:41,956 INFO L78 Accepts]: Start accepts. Automaton has 8452 states and 38704 transitions. Word has length 19 [2020-10-16 11:23:41,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:23:41,956 INFO L481 AbstractCegarLoop]: Abstraction has 8452 states and 38704 transitions. [2020-10-16 11:23:41,956 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 11:23:41,956 INFO L276 IsEmpty]: Start isEmpty. Operand 8452 states and 38704 transitions. [2020-10-16 11:23:41,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-16 11:23:41,958 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:23:41,958 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:23:42,680 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2020-10-16 11:23:42,681 INFO L429 AbstractCegarLoop]: === Iteration 8 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:23:42,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:23:42,681 INFO L82 PathProgramCache]: Analyzing trace with hash -274460668, now seen corresponding path program 1 times [2020-10-16 11:23:42,681 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:23:42,681 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263563602] [2020-10-16 11:23:42,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:23:42,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:23:42,726 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 11:23:42,726 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263563602] [2020-10-16 11:23:42,726 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1881433190] [2020-10-16 11:23:42,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 11:23:42,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:23:42,798 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-16 11:23:42,798 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:23:42,823 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 11:23:42,824 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 11:23:42,824 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-10-16 11:23:42,824 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482585065] [2020-10-16 11:23:42,824 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 11:23:42,825 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:23:42,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 11:23:42,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-16 11:23:42,825 INFO L87 Difference]: Start difference. First operand 8452 states and 38704 transitions. Second operand 9 states. [2020-10-16 11:23:43,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:23:43,183 INFO L93 Difference]: Finished difference Result 19670 states and 79028 transitions. [2020-10-16 11:23:43,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 11:23:43,183 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 19 [2020-10-16 11:23:43,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:23:43,255 INFO L225 Difference]: With dead ends: 19670 [2020-10-16 11:23:43,256 INFO L226 Difference]: Without dead ends: 19645 [2020-10-16 11:23:43,256 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=89, Invalid=183, Unknown=0, NotChecked=0, Total=272 [2020-10-16 11:23:43,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19645 states. [2020-10-16 11:23:43,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19645 to 8480. [2020-10-16 11:23:43,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8480 states. [2020-10-16 11:23:43,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8480 states to 8480 states and 38825 transitions. [2020-10-16 11:23:43,762 INFO L78 Accepts]: Start accepts. Automaton has 8480 states and 38825 transitions. Word has length 19 [2020-10-16 11:23:43,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:23:43,763 INFO L481 AbstractCegarLoop]: Abstraction has 8480 states and 38825 transitions. [2020-10-16 11:23:43,763 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 11:23:43,763 INFO L276 IsEmpty]: Start isEmpty. Operand 8480 states and 38825 transitions. [2020-10-16 11:23:43,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-16 11:23:43,764 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:23:43,765 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:23:43,977 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2020-10-16 11:23:43,978 INFO L429 AbstractCegarLoop]: === Iteration 9 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:23:43,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:23:43,978 INFO L82 PathProgramCache]: Analyzing trace with hash -1149256224, now seen corresponding path program 2 times [2020-10-16 11:23:43,978 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:23:43,978 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012580430] [2020-10-16 11:23:43,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:23:43,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:23:44,022 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-16 11:23:44,022 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012580430] [2020-10-16 11:23:44,022 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:23:44,022 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-16 11:23:44,023 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347708620] [2020-10-16 11:23:44,023 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 11:23:44,023 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:23:44,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 11:23:44,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-16 11:23:44,024 INFO L87 Difference]: Start difference. First operand 8480 states and 38825 transitions. Second operand 7 states. [2020-10-16 11:23:44,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:23:44,290 INFO L93 Difference]: Finished difference Result 19852 states and 79846 transitions. [2020-10-16 11:23:44,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 11:23:44,291 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-10-16 11:23:44,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:23:44,332 INFO L225 Difference]: With dead ends: 19852 [2020-10-16 11:23:44,333 INFO L226 Difference]: Without dead ends: 19827 [2020-10-16 11:23:44,333 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-10-16 11:23:44,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19827 states. [2020-10-16 11:23:44,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19827 to 8379. [2020-10-16 11:23:44,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8379 states. [2020-10-16 11:23:44,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8379 states to 8379 states and 38406 transitions. [2020-10-16 11:23:44,781 INFO L78 Accepts]: Start accepts. Automaton has 8379 states and 38406 transitions. Word has length 19 [2020-10-16 11:23:44,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:23:44,781 INFO L481 AbstractCegarLoop]: Abstraction has 8379 states and 38406 transitions. [2020-10-16 11:23:44,781 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 11:23:44,782 INFO L276 IsEmpty]: Start isEmpty. Operand 8379 states and 38406 transitions. [2020-10-16 11:23:44,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-16 11:23:44,783 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:23:44,783 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:23:44,783 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-16 11:23:44,783 INFO L429 AbstractCegarLoop]: === Iteration 10 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:23:44,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:23:44,784 INFO L82 PathProgramCache]: Analyzing trace with hash -1149271290, now seen corresponding path program 2 times [2020-10-16 11:23:44,784 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:23:44,784 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344261857] [2020-10-16 11:23:44,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:23:44,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:23:44,824 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-16 11:23:44,825 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344261857] [2020-10-16 11:23:44,825 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:23:44,825 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-16 11:23:44,826 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50838529] [2020-10-16 11:23:44,826 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 11:23:44,826 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:23:44,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 11:23:44,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-16 11:23:44,826 INFO L87 Difference]: Start difference. First operand 8379 states and 38406 transitions. Second operand 7 states. [2020-10-16 11:23:45,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:23:45,099 INFO L93 Difference]: Finished difference Result 19555 states and 78564 transitions. [2020-10-16 11:23:45,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 11:23:45,100 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-10-16 11:23:45,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:23:45,157 INFO L225 Difference]: With dead ends: 19555 [2020-10-16 11:23:45,157 INFO L226 Difference]: Without dead ends: 19530 [2020-10-16 11:23:45,158 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-10-16 11:23:45,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19530 states. [2020-10-16 11:23:45,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19530 to 8317. [2020-10-16 11:23:45,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8317 states. [2020-10-16 11:23:45,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8317 states to 8317 states and 38184 transitions. [2020-10-16 11:23:45,478 INFO L78 Accepts]: Start accepts. Automaton has 8317 states and 38184 transitions. Word has length 19 [2020-10-16 11:23:45,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:23:45,478 INFO L481 AbstractCegarLoop]: Abstraction has 8317 states and 38184 transitions. [2020-10-16 11:23:45,478 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 11:23:45,478 INFO L276 IsEmpty]: Start isEmpty. Operand 8317 states and 38184 transitions. [2020-10-16 11:23:45,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-16 11:23:45,479 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:23:45,479 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:23:45,479 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-10-16 11:23:45,479 INFO L429 AbstractCegarLoop]: === Iteration 11 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:23:45,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:23:45,480 INFO L82 PathProgramCache]: Analyzing trace with hash -1557322431, now seen corresponding path program 1 times [2020-10-16 11:23:45,480 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:23:45,480 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926820354] [2020-10-16 11:23:45,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:23:45,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:23:45,537 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:23:45,538 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926820354] [2020-10-16 11:23:45,538 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1003959310] [2020-10-16 11:23:45,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 11:23:45,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:23:45,616 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-16 11:23:45,618 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:23:45,648 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:23:45,648 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 11:23:45,648 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-10-16 11:23:45,648 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286479367] [2020-10-16 11:23:45,649 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 11:23:45,649 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:23:45,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 11:23:45,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-10-16 11:23:45,649 INFO L87 Difference]: Start difference. First operand 8317 states and 38184 transitions. Second operand 11 states. [2020-10-16 11:23:46,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:23:46,323 INFO L93 Difference]: Finished difference Result 26969 states and 101544 transitions. [2020-10-16 11:23:46,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 11:23:46,323 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 21 [2020-10-16 11:23:46,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:23:46,536 INFO L225 Difference]: With dead ends: 26969 [2020-10-16 11:23:46,536 INFO L226 Difference]: Without dead ends: 26957 [2020-10-16 11:23:46,537 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 256 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-10-16 11:23:46,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26957 states. [2020-10-16 11:23:46,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26957 to 8204. [2020-10-16 11:23:46,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8204 states. [2020-10-16 11:23:46,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8204 states to 8204 states and 37628 transitions. [2020-10-16 11:23:46,891 INFO L78 Accepts]: Start accepts. Automaton has 8204 states and 37628 transitions. Word has length 21 [2020-10-16 11:23:46,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:23:46,891 INFO L481 AbstractCegarLoop]: Abstraction has 8204 states and 37628 transitions. [2020-10-16 11:23:46,891 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 11:23:46,891 INFO L276 IsEmpty]: Start isEmpty. Operand 8204 states and 37628 transitions. [2020-10-16 11:23:46,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-16 11:23:46,892 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:23:46,892 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:23:47,092 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,13 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 11:23:47,093 INFO L429 AbstractCegarLoop]: === Iteration 12 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:23:47,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:23:47,093 INFO L82 PathProgramCache]: Analyzing trace with hash 1862834243, now seen corresponding path program 2 times [2020-10-16 11:23:47,094 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:23:47,094 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749525533] [2020-10-16 11:23:47,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:23:47,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:23:47,144 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-16 11:23:47,144 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749525533] [2020-10-16 11:23:47,144 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [484208583] [2020-10-16 11:23:47,145 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 11:23:47,242 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 11:23:47,242 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 11:23:47,245 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-16 11:23:47,246 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:23:47,273 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-16 11:23:47,278 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 11:23:47,278 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-10-16 11:23:47,279 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740563782] [2020-10-16 11:23:47,279 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 11:23:47,279 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:23:47,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 11:23:47,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-10-16 11:23:47,280 INFO L87 Difference]: Start difference. First operand 8204 states and 37628 transitions. Second operand 11 states. [2020-10-16 11:23:48,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:23:48,043 INFO L93 Difference]: Finished difference Result 26661 states and 100277 transitions. [2020-10-16 11:23:48,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 11:23:48,044 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 21 [2020-10-16 11:23:48,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:23:48,126 INFO L225 Difference]: With dead ends: 26661 [2020-10-16 11:23:48,127 INFO L226 Difference]: Without dead ends: 26645 [2020-10-16 11:23:48,129 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 254 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-10-16 11:23:48,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26645 states. [2020-10-16 11:23:48,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26645 to 8091. [2020-10-16 11:23:48,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8091 states. [2020-10-16 11:23:48,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8091 states to 8091 states and 37076 transitions. [2020-10-16 11:23:48,650 INFO L78 Accepts]: Start accepts. Automaton has 8091 states and 37076 transitions. Word has length 21 [2020-10-16 11:23:48,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:23:48,651 INFO L481 AbstractCegarLoop]: Abstraction has 8091 states and 37076 transitions. [2020-10-16 11:23:48,651 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 11:23:48,651 INFO L276 IsEmpty]: Start isEmpty. Operand 8091 states and 37076 transitions. [2020-10-16 11:23:48,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-16 11:23:48,652 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:23:48,652 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:23:48,853 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2020-10-16 11:23:48,853 INFO L429 AbstractCegarLoop]: === Iteration 13 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:23:48,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:23:48,854 INFO L82 PathProgramCache]: Analyzing trace with hash -1769991039, now seen corresponding path program 3 times [2020-10-16 11:23:48,854 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:23:48,855 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372966195] [2020-10-16 11:23:48,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:23:48,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:23:49,033 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 11:23:49,034 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372966195] [2020-10-16 11:23:49,034 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1488925422] [2020-10-16 11:23:49,034 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 11:23:49,107 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-16 11:23:49,108 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 11:23:49,108 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-16 11:23:49,109 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:23:49,143 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 11:23:49,144 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 11:23:49,144 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-10-16 11:23:49,144 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419799448] [2020-10-16 11:23:49,144 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 11:23:49,144 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:23:49,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 11:23:49,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-10-16 11:23:49,145 INFO L87 Difference]: Start difference. First operand 8091 states and 37076 transitions. Second operand 11 states. [2020-10-16 11:23:49,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:23:49,805 INFO L93 Difference]: Finished difference Result 26686 states and 100402 transitions. [2020-10-16 11:23:49,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 11:23:49,806 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 21 [2020-10-16 11:23:49,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:23:49,878 INFO L225 Difference]: With dead ends: 26686 [2020-10-16 11:23:49,878 INFO L226 Difference]: Without dead ends: 26674 [2020-10-16 11:23:49,878 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 256 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-10-16 11:23:50,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26674 states. [2020-10-16 11:23:50,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26674 to 7861. [2020-10-16 11:23:50,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7861 states. [2020-10-16 11:23:50,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7861 states to 7861 states and 36066 transitions. [2020-10-16 11:23:50,273 INFO L78 Accepts]: Start accepts. Automaton has 7861 states and 36066 transitions. Word has length 21 [2020-10-16 11:23:50,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:23:50,273 INFO L481 AbstractCegarLoop]: Abstraction has 7861 states and 36066 transitions. [2020-10-16 11:23:50,273 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 11:23:50,273 INFO L276 IsEmpty]: Start isEmpty. Operand 7861 states and 36066 transitions. [2020-10-16 11:23:50,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-16 11:23:50,274 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:23:50,274 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:23:50,475 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 11:23:50,475 INFO L429 AbstractCegarLoop]: === Iteration 14 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:23:50,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:23:50,476 INFO L82 PathProgramCache]: Analyzing trace with hash -1763681919, now seen corresponding path program 4 times [2020-10-16 11:23:50,476 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:23:50,477 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476623683] [2020-10-16 11:23:50,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:23:50,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:23:50,533 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 11:23:50,534 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476623683] [2020-10-16 11:23:50,534 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2116375915] [2020-10-16 11:23:50,534 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 11:23:50,616 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 11:23:50,616 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 11:23:50,617 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-16 11:23:50,618 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:23:50,640 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 11:23:50,640 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 11:23:50,641 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-10-16 11:23:50,641 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185752648] [2020-10-16 11:23:50,644 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 11:23:50,645 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:23:50,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 11:23:50,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-10-16 11:23:50,645 INFO L87 Difference]: Start difference. First operand 7861 states and 36066 transitions. Second operand 11 states. [2020-10-16 11:23:51,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:23:51,302 INFO L93 Difference]: Finished difference Result 26489 states and 99650 transitions. [2020-10-16 11:23:51,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 11:23:51,303 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 21 [2020-10-16 11:23:51,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:23:51,373 INFO L225 Difference]: With dead ends: 26489 [2020-10-16 11:23:51,373 INFO L226 Difference]: Without dead ends: 26473 [2020-10-16 11:23:51,373 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 254 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-10-16 11:23:51,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26473 states. [2020-10-16 11:23:51,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26473 to 7748. [2020-10-16 11:23:51,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7748 states. [2020-10-16 11:23:51,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7748 states to 7748 states and 35514 transitions. [2020-10-16 11:23:51,858 INFO L78 Accepts]: Start accepts. Automaton has 7748 states and 35514 transitions. Word has length 21 [2020-10-16 11:23:51,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:23:51,858 INFO L481 AbstractCegarLoop]: Abstraction has 7748 states and 35514 transitions. [2020-10-16 11:23:51,858 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 11:23:51,859 INFO L276 IsEmpty]: Start isEmpty. Operand 7748 states and 35514 transitions. [2020-10-16 11:23:51,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-16 11:23:51,860 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:23:51,860 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:23:52,065 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2020-10-16 11:23:52,066 INFO L429 AbstractCegarLoop]: === Iteration 15 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:23:52,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:23:52,066 INFO L82 PathProgramCache]: Analyzing trace with hash 1774143127, now seen corresponding path program 1 times [2020-10-16 11:23:52,067 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:23:52,067 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626485818] [2020-10-16 11:23:52,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:23:52,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:23:52,090 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-16 11:23:52,091 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626485818] [2020-10-16 11:23:52,091 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:23:52,091 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 11:23:52,091 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195756026] [2020-10-16 11:23:52,091 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 11:23:52,092 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:23:52,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 11:23:52,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 11:23:52,092 INFO L87 Difference]: Start difference. First operand 7748 states and 35514 transitions. Second operand 5 states. [2020-10-16 11:23:52,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:23:52,233 INFO L93 Difference]: Finished difference Result 13251 states and 57501 transitions. [2020-10-16 11:23:52,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 11:23:52,233 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-10-16 11:23:52,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:23:52,275 INFO L225 Difference]: With dead ends: 13251 [2020-10-16 11:23:52,275 INFO L226 Difference]: Without dead ends: 13220 [2020-10-16 11:23:52,276 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-16 11:23:52,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13220 states. [2020-10-16 11:23:52,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13220 to 9255. [2020-10-16 11:23:52,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9255 states. [2020-10-16 11:23:52,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9255 states to 9255 states and 42368 transitions. [2020-10-16 11:23:52,619 INFO L78 Accepts]: Start accepts. Automaton has 9255 states and 42368 transitions. Word has length 21 [2020-10-16 11:23:52,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:23:52,619 INFO L481 AbstractCegarLoop]: Abstraction has 9255 states and 42368 transitions. [2020-10-16 11:23:52,619 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 11:23:52,619 INFO L276 IsEmpty]: Start isEmpty. Operand 9255 states and 42368 transitions. [2020-10-16 11:23:52,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-16 11:23:52,620 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:23:52,620 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:23:52,621 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2020-10-16 11:23:52,621 INFO L429 AbstractCegarLoop]: === Iteration 16 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:23:52,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:23:52,621 INFO L82 PathProgramCache]: Analyzing trace with hash -628636285, now seen corresponding path program 5 times [2020-10-16 11:23:52,621 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:23:52,621 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130645074] [2020-10-16 11:23:52,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:23:52,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:23:52,675 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-16 11:23:52,675 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130645074] [2020-10-16 11:23:52,675 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:23:52,675 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-16 11:23:52,675 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196214799] [2020-10-16 11:23:52,676 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 11:23:52,676 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:23:52,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 11:23:52,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-16 11:23:52,676 INFO L87 Difference]: Start difference. First operand 9255 states and 42368 transitions. Second operand 9 states. [2020-10-16 11:23:53,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:23:53,296 INFO L93 Difference]: Finished difference Result 29788 states and 113841 transitions. [2020-10-16 11:23:53,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 11:23:53,297 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-10-16 11:23:53,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:23:53,356 INFO L225 Difference]: With dead ends: 29788 [2020-10-16 11:23:53,357 INFO L226 Difference]: Without dead ends: 29770 [2020-10-16 11:23:53,357 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-16 11:23:53,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29770 states. [2020-10-16 11:23:53,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29770 to 8964. [2020-10-16 11:23:53,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8964 states. [2020-10-16 11:23:53,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8964 states to 8964 states and 41031 transitions. [2020-10-16 11:23:53,944 INFO L78 Accepts]: Start accepts. Automaton has 8964 states and 41031 transitions. Word has length 21 [2020-10-16 11:23:53,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:23:53,945 INFO L481 AbstractCegarLoop]: Abstraction has 8964 states and 41031 transitions. [2020-10-16 11:23:53,945 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 11:23:53,945 INFO L276 IsEmpty]: Start isEmpty. Operand 8964 states and 41031 transitions. [2020-10-16 11:23:53,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-16 11:23:53,946 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:23:53,946 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:23:53,946 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2020-10-16 11:23:53,947 INFO L429 AbstractCegarLoop]: === Iteration 17 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:23:53,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:23:53,947 INFO L82 PathProgramCache]: Analyzing trace with hash -643099645, now seen corresponding path program 6 times [2020-10-16 11:23:53,947 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:23:53,947 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287872954] [2020-10-16 11:23:53,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:23:53,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:23:54,015 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-16 11:23:54,016 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287872954] [2020-10-16 11:23:54,016 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:23:54,016 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-16 11:23:54,016 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075944372] [2020-10-16 11:23:54,016 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 11:23:54,016 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:23:54,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 11:23:54,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-16 11:23:54,018 INFO L87 Difference]: Start difference. First operand 8964 states and 41031 transitions. Second operand 9 states. [2020-10-16 11:23:54,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:23:54,730 INFO L93 Difference]: Finished difference Result 29379 states and 112099 transitions. [2020-10-16 11:23:54,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 11:23:54,731 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-10-16 11:23:54,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:23:54,794 INFO L225 Difference]: With dead ends: 29379 [2020-10-16 11:23:54,794 INFO L226 Difference]: Without dead ends: 29356 [2020-10-16 11:23:54,795 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-16 11:23:54,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29356 states. [2020-10-16 11:23:55,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29356 to 8573. [2020-10-16 11:23:55,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8573 states. [2020-10-16 11:23:55,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8573 states to 8573 states and 39353 transitions. [2020-10-16 11:23:55,218 INFO L78 Accepts]: Start accepts. Automaton has 8573 states and 39353 transitions. Word has length 21 [2020-10-16 11:23:55,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:23:55,219 INFO L481 AbstractCegarLoop]: Abstraction has 8573 states and 39353 transitions. [2020-10-16 11:23:55,219 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 11:23:55,219 INFO L276 IsEmpty]: Start isEmpty. Operand 8573 states and 39353 transitions. [2020-10-16 11:23:55,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-16 11:23:55,220 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:23:55,220 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:23:55,220 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2020-10-16 11:23:55,220 INFO L429 AbstractCegarLoop]: === Iteration 18 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:23:55,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:23:55,221 INFO L82 PathProgramCache]: Analyzing trace with hash 1599602836, now seen corresponding path program 1 times [2020-10-16 11:23:55,221 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:23:55,221 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761349626] [2020-10-16 11:23:55,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:23:55,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:23:55,266 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-16 11:23:55,266 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761349626] [2020-10-16 11:23:55,267 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1241540620] [2020-10-16 11:23:55,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 11:23:55,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:23:55,347 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-16 11:23:55,347 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:23:55,365 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-16 11:23:55,365 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 11:23:55,365 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-10-16 11:23:55,366 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935309225] [2020-10-16 11:23:55,366 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 11:23:55,366 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:23:55,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 11:23:55,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-16 11:23:55,366 INFO L87 Difference]: Start difference. First operand 8573 states and 39353 transitions. Second operand 9 states. [2020-10-16 11:23:55,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:23:55,687 INFO L93 Difference]: Finished difference Result 19727 states and 80274 transitions. [2020-10-16 11:23:55,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 11:23:55,687 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 23 [2020-10-16 11:23:55,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:23:55,733 INFO L225 Difference]: With dead ends: 19727 [2020-10-16 11:23:55,734 INFO L226 Difference]: Without dead ends: 19703 [2020-10-16 11:23:55,734 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=89, Invalid=183, Unknown=0, NotChecked=0, Total=272 [2020-10-16 11:23:55,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19703 states. [2020-10-16 11:23:56,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19703 to 8847. [2020-10-16 11:23:56,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8847 states. [2020-10-16 11:23:56,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8847 states to 8847 states and 40495 transitions. [2020-10-16 11:23:56,204 INFO L78 Accepts]: Start accepts. Automaton has 8847 states and 40495 transitions. Word has length 23 [2020-10-16 11:23:56,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:23:56,204 INFO L481 AbstractCegarLoop]: Abstraction has 8847 states and 40495 transitions. [2020-10-16 11:23:56,204 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 11:23:56,204 INFO L276 IsEmpty]: Start isEmpty. Operand 8847 states and 40495 transitions. [2020-10-16 11:23:56,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-16 11:23:56,207 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:23:56,207 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:23:56,414 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2020-10-16 11:23:56,415 INFO L429 AbstractCegarLoop]: === Iteration 19 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:23:56,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:23:56,416 INFO L82 PathProgramCache]: Analyzing trace with hash 72758744, now seen corresponding path program 1 times [2020-10-16 11:23:56,416 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:23:56,416 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41121950] [2020-10-16 11:23:56,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:23:56,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:23:56,460 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-16 11:23:56,461 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41121950] [2020-10-16 11:23:56,461 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1944796331] [2020-10-16 11:23:56,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 11:23:56,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:23:56,546 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-16 11:23:56,551 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:23:56,581 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-16 11:23:56,581 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 11:23:56,581 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-10-16 11:23:56,582 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767432862] [2020-10-16 11:23:56,582 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 11:23:56,582 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:23:56,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 11:23:56,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-16 11:23:56,583 INFO L87 Difference]: Start difference. First operand 8847 states and 40495 transitions. Second operand 9 states. [2020-10-16 11:23:56,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:23:56,874 INFO L93 Difference]: Finished difference Result 20694 states and 84261 transitions. [2020-10-16 11:23:56,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 11:23:56,874 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 23 [2020-10-16 11:23:56,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:23:56,917 INFO L225 Difference]: With dead ends: 20694 [2020-10-16 11:23:56,917 INFO L226 Difference]: Without dead ends: 20666 [2020-10-16 11:23:56,918 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=89, Invalid=183, Unknown=0, NotChecked=0, Total=272 [2020-10-16 11:23:57,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20666 states. [2020-10-16 11:23:57,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20666 to 9115. [2020-10-16 11:23:57,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9115 states. [2020-10-16 11:23:57,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9115 states to 9115 states and 41679 transitions. [2020-10-16 11:23:57,255 INFO L78 Accepts]: Start accepts. Automaton has 9115 states and 41679 transitions. Word has length 23 [2020-10-16 11:23:57,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:23:57,255 INFO L481 AbstractCegarLoop]: Abstraction has 9115 states and 41679 transitions. [2020-10-16 11:23:57,255 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 11:23:57,255 INFO L276 IsEmpty]: Start isEmpty. Operand 9115 states and 41679 transitions. [2020-10-16 11:23:57,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-16 11:23:57,257 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:23:57,257 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:23:57,465 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,18 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 11:23:57,466 INFO L429 AbstractCegarLoop]: === Iteration 20 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:23:57,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:23:57,466 INFO L82 PathProgramCache]: Analyzing trace with hash -328675496, now seen corresponding path program 1 times [2020-10-16 11:23:57,467 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:23:57,467 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953244031] [2020-10-16 11:23:57,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:23:57,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:23:57,502 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-16 11:23:57,502 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953244031] [2020-10-16 11:23:57,502 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1412126770] [2020-10-16 11:23:57,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 11:23:57,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:23:57,576 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-16 11:23:57,578 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:23:57,598 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-16 11:23:57,599 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 11:23:57,599 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-10-16 11:23:57,599 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808265582] [2020-10-16 11:23:57,599 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 11:23:57,599 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:23:57,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 11:23:57,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-16 11:23:57,602 INFO L87 Difference]: Start difference. First operand 9115 states and 41679 transitions. Second operand 9 states. [2020-10-16 11:23:57,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:23:57,916 INFO L93 Difference]: Finished difference Result 21396 states and 87360 transitions. [2020-10-16 11:23:57,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 11:23:57,916 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 23 [2020-10-16 11:23:57,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:23:57,963 INFO L225 Difference]: With dead ends: 21396 [2020-10-16 11:23:57,964 INFO L226 Difference]: Without dead ends: 21359 [2020-10-16 11:23:57,964 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=89, Invalid=183, Unknown=0, NotChecked=0, Total=272 [2020-10-16 11:23:58,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21359 states. [2020-10-16 11:23:58,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21359 to 9320. [2020-10-16 11:23:58,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9320 states. [2020-10-16 11:23:58,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9320 states to 9320 states and 42648 transitions. [2020-10-16 11:23:58,308 INFO L78 Accepts]: Start accepts. Automaton has 9320 states and 42648 transitions. Word has length 23 [2020-10-16 11:23:58,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:23:58,309 INFO L481 AbstractCegarLoop]: Abstraction has 9320 states and 42648 transitions. [2020-10-16 11:23:58,309 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 11:23:58,309 INFO L276 IsEmpty]: Start isEmpty. Operand 9320 states and 42648 transitions. [2020-10-16 11:23:58,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-16 11:23:58,313 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:23:58,313 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:23:58,528 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable51 [2020-10-16 11:23:58,529 INFO L429 AbstractCegarLoop]: === Iteration 21 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:23:58,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:23:58,529 INFO L82 PathProgramCache]: Analyzing trace with hash -150456492, now seen corresponding path program 2 times [2020-10-16 11:23:58,530 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:23:58,530 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045485077] [2020-10-16 11:23:58,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:23:58,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:23:58,566 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-16 11:23:58,566 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045485077] [2020-10-16 11:23:58,567 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:23:58,567 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-16 11:23:58,567 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567490406] [2020-10-16 11:23:58,568 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 11:23:58,568 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:23:58,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 11:23:58,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-16 11:23:58,568 INFO L87 Difference]: Start difference. First operand 9320 states and 42648 transitions. Second operand 7 states. [2020-10-16 11:23:58,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:23:58,854 INFO L93 Difference]: Finished difference Result 21489 states and 87752 transitions. [2020-10-16 11:23:58,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 11:23:58,855 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-10-16 11:23:58,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:23:58,906 INFO L225 Difference]: With dead ends: 21489 [2020-10-16 11:23:58,906 INFO L226 Difference]: Without dead ends: 21452 [2020-10-16 11:23:58,906 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-10-16 11:23:59,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21452 states. [2020-10-16 11:23:59,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21452 to 9401. [2020-10-16 11:23:59,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9401 states. [2020-10-16 11:23:59,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9401 states to 9401 states and 43010 transitions. [2020-10-16 11:23:59,425 INFO L78 Accepts]: Start accepts. Automaton has 9401 states and 43010 transitions. Word has length 23 [2020-10-16 11:23:59,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:23:59,425 INFO L481 AbstractCegarLoop]: Abstraction has 9401 states and 43010 transitions. [2020-10-16 11:23:59,425 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 11:23:59,425 INFO L276 IsEmpty]: Start isEmpty. Operand 9401 states and 43010 transitions. [2020-10-16 11:23:59,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-16 11:23:59,429 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:23:59,429 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:23:59,429 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2020-10-16 11:23:59,429 INFO L429 AbstractCegarLoop]: === Iteration 22 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:23:59,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:23:59,430 INFO L82 PathProgramCache]: Analyzing trace with hash -150471558, now seen corresponding path program 2 times [2020-10-16 11:23:59,430 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:23:59,430 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853086636] [2020-10-16 11:23:59,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:23:59,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:23:59,460 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-16 11:23:59,460 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853086636] [2020-10-16 11:23:59,460 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:23:59,460 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-16 11:23:59,461 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602535409] [2020-10-16 11:23:59,461 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 11:23:59,461 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:23:59,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 11:23:59,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-16 11:23:59,462 INFO L87 Difference]: Start difference. First operand 9401 states and 43010 transitions. Second operand 7 states. [2020-10-16 11:23:59,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:23:59,746 INFO L93 Difference]: Finished difference Result 21218 states and 86469 transitions. [2020-10-16 11:23:59,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 11:23:59,746 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-10-16 11:23:59,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:23:59,795 INFO L225 Difference]: With dead ends: 21218 [2020-10-16 11:23:59,795 INFO L226 Difference]: Without dead ends: 21181 [2020-10-16 11:23:59,795 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-10-16 11:23:59,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21181 states. [2020-10-16 11:24:00,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21181 to 9396. [2020-10-16 11:24:00,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9396 states. [2020-10-16 11:24:00,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9396 states to 9396 states and 42985 transitions. [2020-10-16 11:24:00,140 INFO L78 Accepts]: Start accepts. Automaton has 9396 states and 42985 transitions. Word has length 23 [2020-10-16 11:24:00,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:24:00,140 INFO L481 AbstractCegarLoop]: Abstraction has 9396 states and 42985 transitions. [2020-10-16 11:24:00,140 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 11:24:00,140 INFO L276 IsEmpty]: Start isEmpty. Operand 9396 states and 42985 transitions. [2020-10-16 11:24:00,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-16 11:24:00,142 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:24:00,142 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:24:00,143 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2020-10-16 11:24:00,143 INFO L429 AbstractCegarLoop]: === Iteration 23 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:24:00,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:24:00,143 INFO L82 PathProgramCache]: Analyzing trace with hash -150449920, now seen corresponding path program 2 times [2020-10-16 11:24:00,143 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:24:00,143 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676804511] [2020-10-16 11:24:00,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:24:00,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:24:00,181 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-16 11:24:00,182 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676804511] [2020-10-16 11:24:00,182 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:24:00,182 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-16 11:24:00,182 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714483891] [2020-10-16 11:24:00,182 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 11:24:00,183 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:24:00,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 11:24:00,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-16 11:24:00,183 INFO L87 Difference]: Start difference. First operand 9396 states and 42985 transitions. Second operand 7 states. [2020-10-16 11:24:00,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:24:00,472 INFO L93 Difference]: Finished difference Result 21047 states and 85702 transitions. [2020-10-16 11:24:00,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 11:24:00,472 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-10-16 11:24:00,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:24:00,523 INFO L225 Difference]: With dead ends: 21047 [2020-10-16 11:24:00,523 INFO L226 Difference]: Without dead ends: 21010 [2020-10-16 11:24:00,523 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-10-16 11:24:00,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21010 states. [2020-10-16 11:24:00,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21010 to 9426. [2020-10-16 11:24:00,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9426 states. [2020-10-16 11:24:00,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9426 states to 9426 states and 43057 transitions. [2020-10-16 11:24:00,881 INFO L78 Accepts]: Start accepts. Automaton has 9426 states and 43057 transitions. Word has length 23 [2020-10-16 11:24:00,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:24:00,882 INFO L481 AbstractCegarLoop]: Abstraction has 9426 states and 43057 transitions. [2020-10-16 11:24:00,882 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 11:24:00,882 INFO L276 IsEmpty]: Start isEmpty. Operand 9426 states and 43057 transitions. [2020-10-16 11:24:00,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-16 11:24:00,885 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:24:00,885 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:24:00,885 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2020-10-16 11:24:00,885 INFO L429 AbstractCegarLoop]: === Iteration 24 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:24:00,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:24:00,885 INFO L82 PathProgramCache]: Analyzing trace with hash -156736363, now seen corresponding path program 1 times [2020-10-16 11:24:00,885 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:24:00,886 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462617871] [2020-10-16 11:24:00,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:24:00,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:24:00,941 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-16 11:24:00,941 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462617871] [2020-10-16 11:24:00,942 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1820801612] [2020-10-16 11:24:00,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 11:24:01,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:24:01,019 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-16 11:24:01,020 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:24:01,044 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-16 11:24:01,044 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 11:24:01,044 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-10-16 11:24:01,045 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776520249] [2020-10-16 11:24:01,045 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 11:24:01,045 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:24:01,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 11:24:01,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-10-16 11:24:01,045 INFO L87 Difference]: Start difference. First operand 9426 states and 43057 transitions. Second operand 11 states. [2020-10-16 11:24:01,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:24:01,862 INFO L93 Difference]: Finished difference Result 30145 states and 115754 transitions. [2020-10-16 11:24:01,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 11:24:01,862 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2020-10-16 11:24:01,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:24:01,924 INFO L225 Difference]: With dead ends: 30145 [2020-10-16 11:24:01,924 INFO L226 Difference]: Without dead ends: 30125 [2020-10-16 11:24:01,925 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 250 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-10-16 11:24:02,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30125 states. [2020-10-16 11:24:02,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30125 to 9338. [2020-10-16 11:24:02,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9338 states. [2020-10-16 11:24:02,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9338 states to 9338 states and 42582 transitions. [2020-10-16 11:24:02,349 INFO L78 Accepts]: Start accepts. Automaton has 9338 states and 42582 transitions. Word has length 25 [2020-10-16 11:24:02,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:24:02,349 INFO L481 AbstractCegarLoop]: Abstraction has 9338 states and 42582 transitions. [2020-10-16 11:24:02,349 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 11:24:02,350 INFO L276 IsEmpty]: Start isEmpty. Operand 9338 states and 42582 transitions. [2020-10-16 11:24:02,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-16 11:24:02,352 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:24:02,352 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:24:02,553 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2020-10-16 11:24:02,553 INFO L429 AbstractCegarLoop]: === Iteration 25 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:24:02,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:24:02,554 INFO L82 PathProgramCache]: Analyzing trace with hash -558170603, now seen corresponding path program 1 times [2020-10-16 11:24:02,554 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:24:02,554 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306318122] [2020-10-16 11:24:02,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:24:02,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:24:02,602 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-16 11:24:02,602 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306318122] [2020-10-16 11:24:02,603 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1330252251] [2020-10-16 11:24:02,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 11:24:02,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:24:02,681 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-16 11:24:02,681 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:24:02,705 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-16 11:24:02,705 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 11:24:02,705 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-10-16 11:24:02,705 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601190066] [2020-10-16 11:24:02,706 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 11:24:02,706 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:24:02,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 11:24:02,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-10-16 11:24:02,706 INFO L87 Difference]: Start difference. First operand 9338 states and 42582 transitions. Second operand 11 states. [2020-10-16 11:24:03,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:24:03,422 INFO L93 Difference]: Finished difference Result 29696 states and 113916 transitions. [2020-10-16 11:24:03,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 11:24:03,423 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2020-10-16 11:24:03,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:24:03,487 INFO L225 Difference]: With dead ends: 29696 [2020-10-16 11:24:03,487 INFO L226 Difference]: Without dead ends: 29676 [2020-10-16 11:24:03,487 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 248 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-10-16 11:24:03,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29676 states. [2020-10-16 11:24:03,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29676 to 9291. [2020-10-16 11:24:03,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9291 states. [2020-10-16 11:24:03,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9291 states to 9291 states and 42295 transitions. [2020-10-16 11:24:03,896 INFO L78 Accepts]: Start accepts. Automaton has 9291 states and 42295 transitions. Word has length 25 [2020-10-16 11:24:03,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:24:03,896 INFO L481 AbstractCegarLoop]: Abstraction has 9291 states and 42295 transitions. [2020-10-16 11:24:03,896 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 11:24:03,896 INFO L276 IsEmpty]: Start isEmpty. Operand 9291 states and 42295 transitions. [2020-10-16 11:24:03,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-16 11:24:03,899 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:24:03,899 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:24:04,099 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2020-10-16 11:24:04,100 INFO L429 AbstractCegarLoop]: === Iteration 26 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:24:04,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:24:04,100 INFO L82 PathProgramCache]: Analyzing trace with hash -379966665, now seen corresponding path program 2 times [2020-10-16 11:24:04,101 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:24:04,101 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054980170] [2020-10-16 11:24:04,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:24:04,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:24:04,149 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-16 11:24:04,149 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054980170] [2020-10-16 11:24:04,150 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1039092750] [2020-10-16 11:24:04,150 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 11:24:04,223 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 11:24:04,224 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 11:24:04,225 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-16 11:24:04,226 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:24:04,243 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-16 11:24:04,243 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 11:24:04,243 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-10-16 11:24:04,244 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790939033] [2020-10-16 11:24:04,244 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 11:24:04,244 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:24:04,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 11:24:04,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-10-16 11:24:04,244 INFO L87 Difference]: Start difference. First operand 9291 states and 42295 transitions. Second operand 11 states. [2020-10-16 11:24:04,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:24:04,910 INFO L93 Difference]: Finished difference Result 29267 states and 112142 transitions. [2020-10-16 11:24:04,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 11:24:04,910 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2020-10-16 11:24:04,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:24:04,980 INFO L225 Difference]: With dead ends: 29267 [2020-10-16 11:24:04,981 INFO L226 Difference]: Without dead ends: 29245 [2020-10-16 11:24:04,981 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 252 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-10-16 11:24:05,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29245 states. [2020-10-16 11:24:05,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29245 to 9288. [2020-10-16 11:24:05,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9288 states. [2020-10-16 11:24:05,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9288 states to 9288 states and 42242 transitions. [2020-10-16 11:24:05,534 INFO L78 Accepts]: Start accepts. Automaton has 9288 states and 42242 transitions. Word has length 25 [2020-10-16 11:24:05,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:24:05,535 INFO L481 AbstractCegarLoop]: Abstraction has 9288 states and 42242 transitions. [2020-10-16 11:24:05,535 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 11:24:05,535 INFO L276 IsEmpty]: Start isEmpty. Operand 9288 states and 42242 transitions. [2020-10-16 11:24:05,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-16 11:24:05,538 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:24:05,538 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:24:05,738 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2020-10-16 11:24:05,739 INFO L429 AbstractCegarLoop]: === Iteration 27 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:24:05,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:24:05,739 INFO L82 PathProgramCache]: Analyzing trace with hash -379945027, now seen corresponding path program 2 times [2020-10-16 11:24:05,740 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:24:05,740 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427751506] [2020-10-16 11:24:05,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:24:05,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:24:05,789 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-16 11:24:05,789 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427751506] [2020-10-16 11:24:05,789 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [917997135] [2020-10-16 11:24:05,789 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 11:24:05,865 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 11:24:05,865 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 11:24:05,866 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-16 11:24:05,867 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:24:05,890 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-16 11:24:05,890 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 11:24:05,890 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-10-16 11:24:05,890 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020317842] [2020-10-16 11:24:05,890 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 11:24:05,891 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:24:05,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 11:24:05,891 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-10-16 11:24:05,891 INFO L87 Difference]: Start difference. First operand 9288 states and 42242 transitions. Second operand 11 states. [2020-10-16 11:24:06,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:24:06,589 INFO L93 Difference]: Finished difference Result 28920 states and 110796 transitions. [2020-10-16 11:24:06,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 11:24:06,590 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2020-10-16 11:24:06,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:24:06,654 INFO L225 Difference]: With dead ends: 28920 [2020-10-16 11:24:06,654 INFO L226 Difference]: Without dead ends: 28898 [2020-10-16 11:24:06,655 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 250 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-10-16 11:24:06,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28898 states. [2020-10-16 11:24:07,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28898 to 9176. [2020-10-16 11:24:07,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9176 states. [2020-10-16 11:24:07,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9176 states to 9176 states and 41695 transitions. [2020-10-16 11:24:07,076 INFO L78 Accepts]: Start accepts. Automaton has 9176 states and 41695 transitions. Word has length 25 [2020-10-16 11:24:07,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:24:07,077 INFO L481 AbstractCegarLoop]: Abstraction has 9176 states and 41695 transitions. [2020-10-16 11:24:07,077 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 11:24:07,077 INFO L276 IsEmpty]: Start isEmpty. Operand 9176 states and 41695 transitions. [2020-10-16 11:24:07,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-16 11:24:07,080 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:24:07,080 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:24:07,281 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 11:24:07,281 INFO L429 AbstractCegarLoop]: === Iteration 28 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:24:07,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:24:07,282 INFO L82 PathProgramCache]: Analyzing trace with hash 1211690581, now seen corresponding path program 3 times [2020-10-16 11:24:07,282 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:24:07,282 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193423892] [2020-10-16 11:24:07,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:24:07,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:24:07,338 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-16 11:24:07,338 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193423892] [2020-10-16 11:24:07,339 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1526649036] [2020-10-16 11:24:07,339 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 11:24:07,416 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-10-16 11:24:07,417 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 11:24:07,417 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-16 11:24:07,418 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:24:07,438 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-16 11:24:07,438 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 11:24:07,438 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-10-16 11:24:07,439 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043048826] [2020-10-16 11:24:07,439 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 11:24:07,439 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:24:07,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 11:24:07,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-10-16 11:24:07,439 INFO L87 Difference]: Start difference. First operand 9176 states and 41695 transitions. Second operand 11 states. [2020-10-16 11:24:08,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:24:08,119 INFO L93 Difference]: Finished difference Result 29038 states and 111216 transitions. [2020-10-16 11:24:08,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 11:24:08,119 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2020-10-16 11:24:08,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:24:08,189 INFO L225 Difference]: With dead ends: 29038 [2020-10-16 11:24:08,189 INFO L226 Difference]: Without dead ends: 29018 [2020-10-16 11:24:08,189 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 250 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-10-16 11:24:08,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29018 states. [2020-10-16 11:24:08,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29018 to 9000. [2020-10-16 11:24:08,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9000 states. [2020-10-16 11:24:08,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9000 states to 9000 states and 40897 transitions. [2020-10-16 11:24:08,796 INFO L78 Accepts]: Start accepts. Automaton has 9000 states and 40897 transitions. Word has length 25 [2020-10-16 11:24:08,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:24:08,796 INFO L481 AbstractCegarLoop]: Abstraction has 9000 states and 40897 transitions. [2020-10-16 11:24:08,796 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 11:24:08,796 INFO L276 IsEmpty]: Start isEmpty. Operand 9000 states and 40897 transitions. [2020-10-16 11:24:08,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-16 11:24:08,800 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:24:08,800 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:24:09,001 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2020-10-16 11:24:09,001 INFO L429 AbstractCegarLoop]: === Iteration 29 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:24:09,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:24:09,002 INFO L82 PathProgramCache]: Analyzing trace with hash 1201691221, now seen corresponding path program 4 times [2020-10-16 11:24:09,002 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:24:09,003 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964851880] [2020-10-16 11:24:09,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:24:09,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:24:09,050 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-16 11:24:09,050 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964851880] [2020-10-16 11:24:09,050 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [558149993] [2020-10-16 11:24:09,051 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 11:24:09,125 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 11:24:09,125 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 11:24:09,126 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-16 11:24:09,127 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:24:09,147 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-16 11:24:09,147 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 11:24:09,147 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-10-16 11:24:09,148 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651827170] [2020-10-16 11:24:09,148 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 11:24:09,148 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:24:09,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 11:24:09,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-10-16 11:24:09,149 INFO L87 Difference]: Start difference. First operand 9000 states and 40897 transitions. Second operand 11 states. [2020-10-16 11:24:09,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:24:09,867 INFO L93 Difference]: Finished difference Result 29283 states and 112236 transitions. [2020-10-16 11:24:09,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 11:24:09,867 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2020-10-16 11:24:09,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:24:09,936 INFO L225 Difference]: With dead ends: 29283 [2020-10-16 11:24:09,936 INFO L226 Difference]: Without dead ends: 29261 [2020-10-16 11:24:09,937 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 248 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-10-16 11:24:10,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29261 states. [2020-10-16 11:24:10,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29261 to 8997. [2020-10-16 11:24:10,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8997 states. [2020-10-16 11:24:10,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8997 states to 8997 states and 40842 transitions. [2020-10-16 11:24:10,382 INFO L78 Accepts]: Start accepts. Automaton has 8997 states and 40842 transitions. Word has length 25 [2020-10-16 11:24:10,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:24:10,382 INFO L481 AbstractCegarLoop]: Abstraction has 8997 states and 40842 transitions. [2020-10-16 11:24:10,382 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 11:24:10,382 INFO L276 IsEmpty]: Start isEmpty. Operand 8997 states and 40842 transitions. [2020-10-16 11:24:10,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-16 11:24:10,385 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:24:10,386 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:24:10,586 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 11:24:10,587 INFO L429 AbstractCegarLoop]: === Iteration 30 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:24:10,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:24:10,587 INFO L82 PathProgramCache]: Analyzing trace with hash 1201697793, now seen corresponding path program 1 times [2020-10-16 11:24:10,587 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:24:10,588 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288294174] [2020-10-16 11:24:10,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:24:10,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:24:10,639 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-16 11:24:10,640 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288294174] [2020-10-16 11:24:10,640 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [376171391] [2020-10-16 11:24:10,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 11:24:10,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:24:10,719 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-16 11:24:10,720 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:24:10,739 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-16 11:24:10,740 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 11:24:10,740 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-10-16 11:24:10,740 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901782561] [2020-10-16 11:24:10,740 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 11:24:10,740 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:24:10,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 11:24:10,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-10-16 11:24:10,741 INFO L87 Difference]: Start difference. First operand 8997 states and 40842 transitions. Second operand 11 states. [2020-10-16 11:24:11,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:24:11,496 INFO L93 Difference]: Finished difference Result 29105 states and 111801 transitions. [2020-10-16 11:24:11,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 11:24:11,496 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2020-10-16 11:24:11,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:24:11,555 INFO L225 Difference]: With dead ends: 29105 [2020-10-16 11:24:11,555 INFO L226 Difference]: Without dead ends: 29085 [2020-10-16 11:24:11,555 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 247 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-10-16 11:24:11,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29085 states. [2020-10-16 11:24:11,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29085 to 8955. [2020-10-16 11:24:11,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8955 states. [2020-10-16 11:24:11,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8955 states to 8955 states and 40593 transitions. [2020-10-16 11:24:11,956 INFO L78 Accepts]: Start accepts. Automaton has 8955 states and 40593 transitions. Word has length 25 [2020-10-16 11:24:11,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:24:11,957 INFO L481 AbstractCegarLoop]: Abstraction has 8955 states and 40593 transitions. [2020-10-16 11:24:11,957 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 11:24:11,957 INFO L276 IsEmpty]: Start isEmpty. Operand 8955 states and 40593 transitions. [2020-10-16 11:24:11,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-16 11:24:11,960 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:24:11,960 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:24:12,160 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable61 [2020-10-16 11:24:12,161 INFO L429 AbstractCegarLoop]: === Iteration 31 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:24:12,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:24:12,161 INFO L82 PathProgramCache]: Analyzing trace with hash 1218006273, now seen corresponding path program 2 times [2020-10-16 11:24:12,162 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:24:12,162 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64976260] [2020-10-16 11:24:12,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:24:12,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:24:12,209 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-16 11:24:12,209 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64976260] [2020-10-16 11:24:12,209 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [742201417] [2020-10-16 11:24:12,209 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 11:24:12,298 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 11:24:12,298 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 11:24:12,299 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-16 11:24:12,301 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:24:12,331 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-16 11:24:12,332 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 11:24:12,332 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-10-16 11:24:12,332 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507587527] [2020-10-16 11:24:12,333 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 11:24:12,333 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:24:12,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 11:24:12,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-10-16 11:24:12,334 INFO L87 Difference]: Start difference. First operand 8955 states and 40593 transitions. Second operand 11 states. [2020-10-16 11:24:13,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:24:13,299 INFO L93 Difference]: Finished difference Result 28806 states and 110558 transitions. [2020-10-16 11:24:13,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 11:24:13,299 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2020-10-16 11:24:13,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:24:13,358 INFO L225 Difference]: With dead ends: 28806 [2020-10-16 11:24:13,358 INFO L226 Difference]: Without dead ends: 28779 [2020-10-16 11:24:13,359 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-10-16 11:24:13,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28779 states. [2020-10-16 11:24:13,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28779 to 8841. [2020-10-16 11:24:13,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8841 states. [2020-10-16 11:24:13,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8841 states to 8841 states and 40062 transitions. [2020-10-16 11:24:13,750 INFO L78 Accepts]: Start accepts. Automaton has 8841 states and 40062 transitions. Word has length 25 [2020-10-16 11:24:13,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:24:13,750 INFO L481 AbstractCegarLoop]: Abstraction has 8841 states and 40062 transitions. [2020-10-16 11:24:13,750 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 11:24:13,750 INFO L276 IsEmpty]: Start isEmpty. Operand 8841 states and 40062 transitions. [2020-10-16 11:24:13,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-16 11:24:13,754 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:24:13,754 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:24:13,954 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,27 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 11:24:13,955 INFO L429 AbstractCegarLoop]: === Iteration 32 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:24:13,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:24:13,955 INFO L82 PathProgramCache]: Analyzing trace with hash 1980442581, now seen corresponding path program 3 times [2020-10-16 11:24:13,956 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:24:13,956 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764478134] [2020-10-16 11:24:13,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:24:13,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:24:14,002 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-16 11:24:14,002 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764478134] [2020-10-16 11:24:14,002 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [87736525] [2020-10-16 11:24:14,002 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 11:24:14,074 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-16 11:24:14,074 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 11:24:14,074 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-16 11:24:14,075 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:24:14,096 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-16 11:24:14,096 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 11:24:14,096 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-10-16 11:24:14,096 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518625955] [2020-10-16 11:24:14,097 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 11:24:14,097 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:24:14,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 11:24:14,097 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-10-16 11:24:14,097 INFO L87 Difference]: Start difference. First operand 8841 states and 40062 transitions. Second operand 11 states. [2020-10-16 11:24:14,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:24:14,821 INFO L93 Difference]: Finished difference Result 28636 states and 109852 transitions. [2020-10-16 11:24:14,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 11:24:14,821 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2020-10-16 11:24:14,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:24:14,888 INFO L225 Difference]: With dead ends: 28636 [2020-10-16 11:24:14,888 INFO L226 Difference]: Without dead ends: 28616 [2020-10-16 11:24:14,888 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 247 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-10-16 11:24:15,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28616 states. [2020-10-16 11:24:15,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28616 to 8702. [2020-10-16 11:24:15,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8702 states. [2020-10-16 11:24:15,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8702 states to 8702 states and 39438 transitions. [2020-10-16 11:24:15,290 INFO L78 Accepts]: Start accepts. Automaton has 8702 states and 39438 transitions. Word has length 25 [2020-10-16 11:24:15,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:24:15,291 INFO L481 AbstractCegarLoop]: Abstraction has 8702 states and 39438 transitions. [2020-10-16 11:24:15,291 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 11:24:15,291 INFO L276 IsEmpty]: Start isEmpty. Operand 8702 states and 39438 transitions. [2020-10-16 11:24:15,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-16 11:24:15,293 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:24:15,294 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:24:15,502 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable63 [2020-10-16 11:24:15,503 INFO L429 AbstractCegarLoop]: === Iteration 33 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:24:15,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:24:15,503 INFO L82 PathProgramCache]: Analyzing trace with hash 1965964155, now seen corresponding path program 3 times [2020-10-16 11:24:15,504 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:24:15,504 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899953799] [2020-10-16 11:24:15,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:24:15,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:24:15,552 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-16 11:24:15,552 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899953799] [2020-10-16 11:24:15,552 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [844261217] [2020-10-16 11:24:15,552 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 11:24:15,638 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-16 11:24:15,638 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 11:24:15,639 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-16 11:24:15,641 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:24:15,667 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-16 11:24:15,668 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 11:24:15,668 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-10-16 11:24:15,668 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678691355] [2020-10-16 11:24:15,669 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 11:24:15,669 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:24:15,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 11:24:15,669 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-10-16 11:24:15,670 INFO L87 Difference]: Start difference. First operand 8702 states and 39438 transitions. Second operand 11 states. [2020-10-16 11:24:16,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:24:16,499 INFO L93 Difference]: Finished difference Result 28297 states and 108461 transitions. [2020-10-16 11:24:16,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 11:24:16,499 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2020-10-16 11:24:16,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:24:16,559 INFO L225 Difference]: With dead ends: 28297 [2020-10-16 11:24:16,559 INFO L226 Difference]: Without dead ends: 28277 [2020-10-16 11:24:16,559 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 242 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-10-16 11:24:16,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28277 states. [2020-10-16 11:24:16,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28277 to 8596. [2020-10-16 11:24:16,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8596 states. [2020-10-16 11:24:16,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8596 states to 8596 states and 38978 transitions. [2020-10-16 11:24:16,956 INFO L78 Accepts]: Start accepts. Automaton has 8596 states and 38978 transitions. Word has length 25 [2020-10-16 11:24:16,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:24:16,957 INFO L481 AbstractCegarLoop]: Abstraction has 8596 states and 38978 transitions. [2020-10-16 11:24:16,957 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 11:24:16,957 INFO L276 IsEmpty]: Start isEmpty. Operand 8596 states and 38978 transitions. [2020-10-16 11:24:16,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-16 11:24:16,960 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:24:16,960 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:24:17,166 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64,29 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 11:24:17,167 INFO L429 AbstractCegarLoop]: === Iteration 34 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:24:17,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:24:17,167 INFO L82 PathProgramCache]: Analyzing trace with hash 1970443221, now seen corresponding path program 4 times [2020-10-16 11:24:17,168 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:24:17,168 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180023416] [2020-10-16 11:24:17,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:24:17,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:24:17,215 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-16 11:24:17,215 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180023416] [2020-10-16 11:24:17,216 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [560051861] [2020-10-16 11:24:17,216 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 11:24:17,426 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 11:24:17,426 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 11:24:17,427 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-16 11:24:17,428 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:24:17,450 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-16 11:24:17,451 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 11:24:17,451 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-10-16 11:24:17,451 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216059202] [2020-10-16 11:24:17,451 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 11:24:17,451 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:24:17,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 11:24:17,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-10-16 11:24:17,452 INFO L87 Difference]: Start difference. First operand 8596 states and 38978 transitions. Second operand 11 states. [2020-10-16 11:24:18,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:24:18,128 INFO L93 Difference]: Finished difference Result 28565 states and 109596 transitions. [2020-10-16 11:24:18,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 11:24:18,128 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2020-10-16 11:24:18,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:24:18,191 INFO L225 Difference]: With dead ends: 28565 [2020-10-16 11:24:18,191 INFO L226 Difference]: Without dead ends: 28538 [2020-10-16 11:24:18,192 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 245 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-10-16 11:24:18,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28538 states. [2020-10-16 11:24:18,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28538 to 8563. [2020-10-16 11:24:18,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8563 states. [2020-10-16 11:24:18,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8563 states to 8563 states and 38809 transitions. [2020-10-16 11:24:18,613 INFO L78 Accepts]: Start accepts. Automaton has 8563 states and 38809 transitions. Word has length 25 [2020-10-16 11:24:18,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:24:18,613 INFO L481 AbstractCegarLoop]: Abstraction has 8563 states and 38809 transitions. [2020-10-16 11:24:18,613 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 11:24:18,613 INFO L276 IsEmpty]: Start isEmpty. Operand 8563 states and 38809 transitions. [2020-10-16 11:24:18,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-16 11:24:18,616 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:24:18,616 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:24:18,817 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable65 [2020-10-16 11:24:18,817 INFO L429 AbstractCegarLoop]: === Iteration 35 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:24:18,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:24:18,818 INFO L82 PathProgramCache]: Analyzing trace with hash 1970428155, now seen corresponding path program 4 times [2020-10-16 11:24:18,818 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:24:18,818 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125567252] [2020-10-16 11:24:18,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:24:18,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:24:18,868 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-16 11:24:18,869 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125567252] [2020-10-16 11:24:18,869 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1415025246] [2020-10-16 11:24:18,869 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 11:24:18,950 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 11:24:18,950 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 11:24:18,951 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-16 11:24:18,951 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:24:18,972 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-16 11:24:18,972 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 11:24:18,972 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-10-16 11:24:18,973 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359308889] [2020-10-16 11:24:18,973 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 11:24:18,973 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:24:18,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 11:24:18,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-10-16 11:24:18,973 INFO L87 Difference]: Start difference. First operand 8563 states and 38809 transitions. Second operand 11 states. [2020-10-16 11:24:19,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:24:19,662 INFO L93 Difference]: Finished difference Result 28213 states and 108237 transitions. [2020-10-16 11:24:19,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 11:24:19,662 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2020-10-16 11:24:19,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:24:19,723 INFO L225 Difference]: With dead ends: 28213 [2020-10-16 11:24:19,723 INFO L226 Difference]: Without dead ends: 28186 [2020-10-16 11:24:19,724 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 245 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-10-16 11:24:19,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28186 states. [2020-10-16 11:24:20,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28186 to 8421. [2020-10-16 11:24:20,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8421 states. [2020-10-16 11:24:20,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8421 states to 8421 states and 38146 transitions. [2020-10-16 11:24:20,107 INFO L78 Accepts]: Start accepts. Automaton has 8421 states and 38146 transitions. Word has length 25 [2020-10-16 11:24:20,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:24:20,108 INFO L481 AbstractCegarLoop]: Abstraction has 8421 states and 38146 transitions. [2020-10-16 11:24:20,108 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 11:24:20,108 INFO L276 IsEmpty]: Start isEmpty. Operand 8421 states and 38146 transitions. [2020-10-16 11:24:20,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-16 11:24:20,111 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:24:20,111 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:24:20,311 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66,31 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 11:24:20,312 INFO L429 AbstractCegarLoop]: === Iteration 36 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:24:20,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:24:20,312 INFO L82 PathProgramCache]: Analyzing trace with hash -1943046054, now seen corresponding path program 1 times [2020-10-16 11:24:20,312 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:24:20,313 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857454210] [2020-10-16 11:24:20,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:24:20,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:24:20,335 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-10-16 11:24:20,335 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857454210] [2020-10-16 11:24:20,336 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:24:20,336 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 11:24:20,336 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743704826] [2020-10-16 11:24:20,336 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 11:24:20,336 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:24:20,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 11:24:20,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 11:24:20,337 INFO L87 Difference]: Start difference. First operand 8421 states and 38146 transitions. Second operand 5 states. [2020-10-16 11:24:20,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:24:20,511 INFO L93 Difference]: Finished difference Result 13647 states and 59401 transitions. [2020-10-16 11:24:20,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 11:24:20,512 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2020-10-16 11:24:20,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:24:20,572 INFO L225 Difference]: With dead ends: 13647 [2020-10-16 11:24:20,572 INFO L226 Difference]: Without dead ends: 13615 [2020-10-16 11:24:20,572 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-16 11:24:20,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13615 states. [2020-10-16 11:24:21,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13615 to 9928. [2020-10-16 11:24:21,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9928 states. [2020-10-16 11:24:21,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9928 states to 9928 states and 44651 transitions. [2020-10-16 11:24:21,169 INFO L78 Accepts]: Start accepts. Automaton has 9928 states and 44651 transitions. Word has length 25 [2020-10-16 11:24:21,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:24:21,170 INFO L481 AbstractCegarLoop]: Abstraction has 9928 states and 44651 transitions. [2020-10-16 11:24:21,170 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 11:24:21,171 INFO L276 IsEmpty]: Start isEmpty. Operand 9928 states and 44651 transitions. [2020-10-16 11:24:21,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-16 11:24:21,176 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:24:21,177 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:24:21,177 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2020-10-16 11:24:21,177 INFO L429 AbstractCegarLoop]: === Iteration 37 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:24:21,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:24:21,177 INFO L82 PathProgramCache]: Analyzing trace with hash 1440199159, now seen corresponding path program 5 times [2020-10-16 11:24:21,177 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:24:21,178 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926490076] [2020-10-16 11:24:21,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:24:21,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:24:21,258 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-16 11:24:21,258 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926490076] [2020-10-16 11:24:21,258 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:24:21,259 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-16 11:24:21,259 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45223338] [2020-10-16 11:24:21,259 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 11:24:21,260 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:24:21,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 11:24:21,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-16 11:24:21,261 INFO L87 Difference]: Start difference. First operand 9928 states and 44651 transitions. Second operand 9 states. [2020-10-16 11:24:22,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:24:22,049 INFO L93 Difference]: Finished difference Result 31816 states and 123346 transitions. [2020-10-16 11:24:22,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 11:24:22,050 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-10-16 11:24:22,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:24:22,168 INFO L225 Difference]: With dead ends: 31816 [2020-10-16 11:24:22,168 INFO L226 Difference]: Without dead ends: 31790 [2020-10-16 11:24:22,169 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-16 11:24:22,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31790 states. [2020-10-16 11:24:23,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31790 to 9766. [2020-10-16 11:24:23,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9766 states. [2020-10-16 11:24:23,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9766 states to 9766 states and 43873 transitions. [2020-10-16 11:24:23,095 INFO L78 Accepts]: Start accepts. Automaton has 9766 states and 43873 transitions. Word has length 25 [2020-10-16 11:24:23,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:24:23,095 INFO L481 AbstractCegarLoop]: Abstraction has 9766 states and 43873 transitions. [2020-10-16 11:24:23,095 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 11:24:23,095 INFO L276 IsEmpty]: Start isEmpty. Operand 9766 states and 43873 transitions. [2020-10-16 11:24:23,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-16 11:24:23,098 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:24:23,098 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:24:23,098 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2020-10-16 11:24:23,098 INFO L429 AbstractCegarLoop]: === Iteration 38 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:24:23,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:24:23,098 INFO L82 PathProgramCache]: Analyzing trace with hash 1440220797, now seen corresponding path program 5 times [2020-10-16 11:24:23,098 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:24:23,099 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526584336] [2020-10-16 11:24:23,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:24:23,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:24:23,144 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-16 11:24:23,144 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526584336] [2020-10-16 11:24:23,144 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:24:23,144 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-16 11:24:23,145 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205483647] [2020-10-16 11:24:23,145 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 11:24:23,145 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:24:23,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 11:24:23,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-16 11:24:23,145 INFO L87 Difference]: Start difference. First operand 9766 states and 43873 transitions. Second operand 9 states. [2020-10-16 11:24:23,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:24:23,807 INFO L93 Difference]: Finished difference Result 31277 states and 121098 transitions. [2020-10-16 11:24:23,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 11:24:23,808 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-10-16 11:24:23,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:24:23,884 INFO L225 Difference]: With dead ends: 31277 [2020-10-16 11:24:23,884 INFO L226 Difference]: Without dead ends: 31251 [2020-10-16 11:24:23,885 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-16 11:24:24,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31251 states. [2020-10-16 11:24:24,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31251 to 9592. [2020-10-16 11:24:24,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9592 states. [2020-10-16 11:24:24,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9592 states to 9592 states and 43051 transitions. [2020-10-16 11:24:24,369 INFO L78 Accepts]: Start accepts. Automaton has 9592 states and 43051 transitions. Word has length 25 [2020-10-16 11:24:24,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:24:24,370 INFO L481 AbstractCegarLoop]: Abstraction has 9592 states and 43051 transitions. [2020-10-16 11:24:24,370 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 11:24:24,370 INFO L276 IsEmpty]: Start isEmpty. Operand 9592 states and 43051 transitions. [2020-10-16 11:24:24,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-16 11:24:24,373 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:24:24,373 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:24:24,373 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2020-10-16 11:24:24,373 INFO L429 AbstractCegarLoop]: === Iteration 39 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:24:24,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:24:24,374 INFO L82 PathProgramCache]: Analyzing trace with hash 1425735799, now seen corresponding path program 6 times [2020-10-16 11:24:24,374 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:24:24,374 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528804338] [2020-10-16 11:24:24,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:24:24,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:24:24,434 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-16 11:24:24,434 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528804338] [2020-10-16 11:24:24,434 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:24:24,434 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-16 11:24:24,435 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522845390] [2020-10-16 11:24:24,435 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 11:24:24,435 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:24:24,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 11:24:24,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-16 11:24:24,436 INFO L87 Difference]: Start difference. First operand 9592 states and 43051 transitions. Second operand 9 states. [2020-10-16 11:24:25,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:24:25,163 INFO L93 Difference]: Finished difference Result 30952 states and 119650 transitions. [2020-10-16 11:24:25,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 11:24:25,164 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-10-16 11:24:25,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:24:25,227 INFO L225 Difference]: With dead ends: 30952 [2020-10-16 11:24:25,227 INFO L226 Difference]: Without dead ends: 30919 [2020-10-16 11:24:25,228 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-16 11:24:25,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30919 states. [2020-10-16 11:24:25,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30919 to 9246. [2020-10-16 11:24:25,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9246 states. [2020-10-16 11:24:25,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9246 states to 9246 states and 41509 transitions. [2020-10-16 11:24:25,672 INFO L78 Accepts]: Start accepts. Automaton has 9246 states and 41509 transitions. Word has length 25 [2020-10-16 11:24:25,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:24:25,673 INFO L481 AbstractCegarLoop]: Abstraction has 9246 states and 41509 transitions. [2020-10-16 11:24:25,673 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 11:24:25,673 INFO L276 IsEmpty]: Start isEmpty. Operand 9246 states and 41509 transitions. [2020-10-16 11:24:25,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-16 11:24:25,676 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:24:25,676 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:24:25,676 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2020-10-16 11:24:25,676 INFO L429 AbstractCegarLoop]: === Iteration 40 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:24:25,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:24:25,676 INFO L82 PathProgramCache]: Analyzing trace with hash 1425742371, now seen corresponding path program 5 times [2020-10-16 11:24:25,677 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:24:25,677 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127523678] [2020-10-16 11:24:25,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:24:25,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:24:25,728 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-16 11:24:25,729 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127523678] [2020-10-16 11:24:25,729 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:24:25,729 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-16 11:24:25,729 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436581817] [2020-10-16 11:24:25,729 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 11:24:25,730 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:24:25,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 11:24:25,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-16 11:24:25,730 INFO L87 Difference]: Start difference. First operand 9246 states and 41509 transitions. Second operand 9 states. [2020-10-16 11:24:26,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:24:26,458 INFO L93 Difference]: Finished difference Result 30541 states and 117947 transitions. [2020-10-16 11:24:26,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 11:24:26,458 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-10-16 11:24:26,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:24:26,529 INFO L225 Difference]: With dead ends: 30541 [2020-10-16 11:24:26,529 INFO L226 Difference]: Without dead ends: 30515 [2020-10-16 11:24:26,530 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-16 11:24:26,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30515 states. [2020-10-16 11:24:27,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30515 to 9136. [2020-10-16 11:24:27,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9136 states. [2020-10-16 11:24:27,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9136 states to 9136 states and 40999 transitions. [2020-10-16 11:24:27,103 INFO L78 Accepts]: Start accepts. Automaton has 9136 states and 40999 transitions. Word has length 25 [2020-10-16 11:24:27,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:24:27,103 INFO L481 AbstractCegarLoop]: Abstraction has 9136 states and 40999 transitions. [2020-10-16 11:24:27,103 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 11:24:27,103 INFO L276 IsEmpty]: Start isEmpty. Operand 9136 states and 40999 transitions. [2020-10-16 11:24:27,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-16 11:24:27,106 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:24:27,106 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:24:27,106 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2020-10-16 11:24:27,106 INFO L429 AbstractCegarLoop]: === Iteration 41 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:24:27,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:24:27,106 INFO L82 PathProgramCache]: Analyzing trace with hash 1446529917, now seen corresponding path program 6 times [2020-10-16 11:24:27,106 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:24:27,106 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277372501] [2020-10-16 11:24:27,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:24:27,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:24:27,159 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-16 11:24:27,160 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277372501] [2020-10-16 11:24:27,160 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:24:27,160 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-16 11:24:27,160 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316559157] [2020-10-16 11:24:27,160 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 11:24:27,161 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:24:27,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 11:24:27,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-16 11:24:27,161 INFO L87 Difference]: Start difference. First operand 9136 states and 40999 transitions. Second operand 9 states. [2020-10-16 11:24:27,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:24:27,842 INFO L93 Difference]: Finished difference Result 30263 states and 116773 transitions. [2020-10-16 11:24:27,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 11:24:27,843 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-10-16 11:24:27,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:24:27,904 INFO L225 Difference]: With dead ends: 30263 [2020-10-16 11:24:27,904 INFO L226 Difference]: Without dead ends: 30230 [2020-10-16 11:24:27,904 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-16 11:24:28,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30230 states. [2020-10-16 11:24:28,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30230 to 8877. [2020-10-16 11:24:28,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8877 states. [2020-10-16 11:24:28,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8877 states to 8877 states and 39872 transitions. [2020-10-16 11:24:28,322 INFO L78 Accepts]: Start accepts. Automaton has 8877 states and 39872 transitions. Word has length 25 [2020-10-16 11:24:28,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:24:28,323 INFO L481 AbstractCegarLoop]: Abstraction has 8877 states and 39872 transitions. [2020-10-16 11:24:28,323 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 11:24:28,323 INFO L276 IsEmpty]: Start isEmpty. Operand 8877 states and 39872 transitions. [2020-10-16 11:24:28,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-16 11:24:28,325 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:24:28,325 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:24:28,326 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2020-10-16 11:24:28,326 INFO L429 AbstractCegarLoop]: === Iteration 42 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:24:28,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:24:28,326 INFO L82 PathProgramCache]: Analyzing trace with hash 1446514851, now seen corresponding path program 6 times [2020-10-16 11:24:28,326 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:24:28,326 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565328838] [2020-10-16 11:24:28,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:24:28,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:24:28,380 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-16 11:24:28,381 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565328838] [2020-10-16 11:24:28,381 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:24:28,381 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-16 11:24:28,381 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686199640] [2020-10-16 11:24:28,381 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 11:24:28,381 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:24:28,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 11:24:28,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-16 11:24:28,382 INFO L87 Difference]: Start difference. First operand 8877 states and 39872 transitions. Second operand 9 states. [2020-10-16 11:24:29,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:24:29,084 INFO L93 Difference]: Finished difference Result 29856 states and 115140 transitions. [2020-10-16 11:24:29,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 11:24:29,084 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-10-16 11:24:29,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:24:29,145 INFO L225 Difference]: With dead ends: 29856 [2020-10-16 11:24:29,145 INFO L226 Difference]: Without dead ends: 29823 [2020-10-16 11:24:29,145 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-16 11:24:29,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29823 states. [2020-10-16 11:24:29,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29823 to 8560. [2020-10-16 11:24:29,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8560 states. [2020-10-16 11:24:29,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8560 states to 8560 states and 38495 transitions. [2020-10-16 11:24:29,546 INFO L78 Accepts]: Start accepts. Automaton has 8560 states and 38495 transitions. Word has length 25 [2020-10-16 11:24:29,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:24:29,546 INFO L481 AbstractCegarLoop]: Abstraction has 8560 states and 38495 transitions. [2020-10-16 11:24:29,546 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 11:24:29,547 INFO L276 IsEmpty]: Start isEmpty. Operand 8560 states and 38495 transitions. [2020-10-16 11:24:29,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-16 11:24:29,550 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:24:29,550 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:24:29,550 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2020-10-16 11:24:29,550 INFO L429 AbstractCegarLoop]: === Iteration 43 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:24:29,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:24:29,550 INFO L82 PathProgramCache]: Analyzing trace with hash -110415564, now seen corresponding path program 1 times [2020-10-16 11:24:29,550 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:24:29,550 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908082371] [2020-10-16 11:24:29,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:24:29,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 11:24:29,557 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 11:24:29,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 11:24:29,563 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 11:24:29,569 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-16 11:24:29,569 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-16 11:24:29,569 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2020-10-16 11:24:29,570 WARN L371 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-16 11:24:29,570 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2020-10-16 11:24:29,590 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:29,591 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:29,591 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:29,591 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:29,592 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:29,592 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:29,592 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:29,592 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:29,592 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:29,592 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread6of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:29,592 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread6of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:29,592 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:29,593 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:29,593 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:29,593 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:29,593 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:29,593 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread6of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:29,593 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread6of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:29,593 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:29,593 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:29,593 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:29,593 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:29,593 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:29,594 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:29,594 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:29,594 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:29,594 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:29,594 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:29,594 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:29,594 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:29,594 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:29,595 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:29,595 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:29,595 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:29,595 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:29,595 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:29,595 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:29,595 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:29,596 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:29,596 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:29,596 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:29,596 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:29,596 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:29,596 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:29,596 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:29,596 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:29,597 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:29,597 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:29,597 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:29,597 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:29,597 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:29,597 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:29,597 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:29,597 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:29,598 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:29,598 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:29,598 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:29,598 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:29,598 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:29,598 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:29,598 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:29,599 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:29,599 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:29,599 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:29,599 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:29,599 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:29,599 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:29,599 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:29,600 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:29,600 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:29,600 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:29,600 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:29,600 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:29,600 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:29,600 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:29,601 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:29,601 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:29,601 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:29,601 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:29,601 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:29,601 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:29,601 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:29,601 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:29,602 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:29,602 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:29,602 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:29,602 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:29,602 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:29,602 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:29,602 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:29,603 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:29,603 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:29,603 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:29,603 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:29,603 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:29,603 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:29,603 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:29,604 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:29,604 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:29,604 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:29,604 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:29,604 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:29,604 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:29,604 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:29,604 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:29,604 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:29,604 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:29,604 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:29,605 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:29,605 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:29,605 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:29,605 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:29,605 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:29,605 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:29,605 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:29,605 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:29,605 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:29,605 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:29,605 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:29,605 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:29,606 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:29,606 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:29,606 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:29,606 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:29,606 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:29,606 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:29,606 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:29,606 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:29,607 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:29,607 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:29,607 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:29,613 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:29,614 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:29,614 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:29,614 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:29,614 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:29,615 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:29,615 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:29,615 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:29,615 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:29,615 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:29,616 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:29,616 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:29,616 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:29,616 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:29,616 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:29,617 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:29,617 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:29,617 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:29,617 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:29,618 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:29,619 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread6of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:29,619 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread6of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:29,619 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:29,619 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:29,619 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:29,627 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:29,628 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:29,628 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:29,628 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:29,628 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:29,628 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:29,631 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:29,631 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:29,631 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:29,631 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:29,631 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:29,632 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:29,633 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:29,634 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:29,634 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:29,634 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:29,634 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:29,634 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:29,635 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:29,635 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:29,636 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:29,636 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:29,636 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:29,636 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:29,638 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:29,638 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:29,638 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:29,638 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:29,638 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:29,639 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:29,640 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:29,640 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:29,640 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:29,640 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:29,641 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:29,641 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:24:29,642 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-16 11:24:29,642 INFO L253 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2020-10-16 11:24:29,642 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 11:24:29,642 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-16 11:24:29,642 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-16 11:24:29,643 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 11:24:29,643 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 11:24:29,643 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 11:24:29,643 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 11:24:29,643 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 11:24:29,645 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-16 11:24:29,645 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 160 places, 141 transitions, 402 flow [2020-10-16 11:24:29,645 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 160 places, 141 transitions, 402 flow [2020-10-16 11:24:29,646 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 160 places, 141 transitions, 402 flow [2020-10-16 11:24:29,689 INFO L129 PetriNetUnfolder]: 8/171 cut-off events. [2020-10-16 11:24:29,689 INFO L130 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2020-10-16 11:24:29,693 INFO L80 FinitePrefix]: Finished finitePrefix Result has 219 conditions, 171 events. 8/171 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 310 event pairs, 0 based on Foata normal form. 0/155 useless extension candidates. Maximal degree in co-relation 206. Up to 14 conditions per place. [2020-10-16 11:24:29,699 INFO L117 LiptonReduction]: Number of co-enabled transitions 3612 [2020-10-16 11:24:31,497 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 60 [2020-10-16 11:24:31,789 INFO L132 LiptonReduction]: Checked pairs total: 5372 [2020-10-16 11:24:31,790 INFO L134 LiptonReduction]: Total number of compositions: 134 [2020-10-16 11:24:31,790 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 71 places, 45 transitions, 210 flow [2020-10-16 11:24:33,349 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 18584 states. [2020-10-16 11:24:33,349 INFO L276 IsEmpty]: Start isEmpty. Operand 18584 states. [2020-10-16 11:24:33,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-10-16 11:24:33,349 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:24:33,349 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-10-16 11:24:33,350 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:24:33,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:24:33,350 INFO L82 PathProgramCache]: Analyzing trace with hash 1291919, now seen corresponding path program 1 times [2020-10-16 11:24:33,350 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:24:33,350 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619284780] [2020-10-16 11:24:33,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:24:33,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:24:33,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:24:33,358 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619284780] [2020-10-16 11:24:33,359 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:24:33,359 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 11:24:33,359 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350946853] [2020-10-16 11:24:33,359 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 11:24:33,359 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:24:33,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 11:24:33,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 11:24:33,360 INFO L87 Difference]: Start difference. First operand 18584 states. Second operand 3 states. [2020-10-16 11:24:33,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:24:33,519 INFO L93 Difference]: Finished difference Result 17885 states and 92755 transitions. [2020-10-16 11:24:33,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 11:24:33,519 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-10-16 11:24:33,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:24:33,569 INFO L225 Difference]: With dead ends: 17885 [2020-10-16 11:24:33,569 INFO L226 Difference]: Without dead ends: 16791 [2020-10-16 11:24:33,569 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 11:24:34,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16791 states. [2020-10-16 11:24:34,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16791 to 16791. [2020-10-16 11:24:34,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16791 states. [2020-10-16 11:24:34,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16791 states to 16791 states and 86558 transitions. [2020-10-16 11:24:34,347 INFO L78 Accepts]: Start accepts. Automaton has 16791 states and 86558 transitions. Word has length 3 [2020-10-16 11:24:34,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:24:34,347 INFO L481 AbstractCegarLoop]: Abstraction has 16791 states and 86558 transitions. [2020-10-16 11:24:34,347 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 11:24:34,347 INFO L276 IsEmpty]: Start isEmpty. Operand 16791 states and 86558 transitions. [2020-10-16 11:24:34,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-16 11:24:34,348 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:24:34,348 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:24:34,348 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2020-10-16 11:24:34,348 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:24:34,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:24:34,348 INFO L82 PathProgramCache]: Analyzing trace with hash -1124534846, now seen corresponding path program 1 times [2020-10-16 11:24:34,348 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:24:34,348 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362064913] [2020-10-16 11:24:34,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:24:34,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:24:34,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:24:34,366 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362064913] [2020-10-16 11:24:34,366 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:24:34,366 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 11:24:34,366 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573395018] [2020-10-16 11:24:34,366 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 11:24:34,366 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:24:34,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 11:24:34,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 11:24:34,367 INFO L87 Difference]: Start difference. First operand 16791 states and 86558 transitions. Second operand 5 states. [2020-10-16 11:24:34,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:24:34,603 INFO L93 Difference]: Finished difference Result 30985 states and 150574 transitions. [2020-10-16 11:24:34,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 11:24:34,604 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-10-16 11:24:34,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:24:34,699 INFO L225 Difference]: With dead ends: 30985 [2020-10-16 11:24:34,699 INFO L226 Difference]: Without dead ends: 30977 [2020-10-16 11:24:34,700 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-16 11:24:35,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30977 states. [2020-10-16 11:24:37,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30977 to 19868. [2020-10-16 11:24:37,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19868 states. [2020-10-16 11:24:37,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19868 states to 19868 states and 103363 transitions. [2020-10-16 11:24:37,437 INFO L78 Accepts]: Start accepts. Automaton has 19868 states and 103363 transitions. Word has length 9 [2020-10-16 11:24:37,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:24:37,437 INFO L481 AbstractCegarLoop]: Abstraction has 19868 states and 103363 transitions. [2020-10-16 11:24:37,437 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 11:24:37,437 INFO L276 IsEmpty]: Start isEmpty. Operand 19868 states and 103363 transitions. [2020-10-16 11:24:37,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 11:24:37,438 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:24:37,438 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:24:37,438 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2020-10-16 11:24:37,438 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:24:37,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:24:37,439 INFO L82 PathProgramCache]: Analyzing trace with hash -696216523, now seen corresponding path program 1 times [2020-10-16 11:24:37,439 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:24:37,439 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709274556] [2020-10-16 11:24:37,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:24:37,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:24:37,471 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 11:24:37,472 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709274556] [2020-10-16 11:24:37,472 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:24:37,472 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 11:24:37,472 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499634913] [2020-10-16 11:24:37,472 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 11:24:37,473 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:24:37,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 11:24:37,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 11:24:37,473 INFO L87 Difference]: Start difference. First operand 19868 states and 103363 transitions. Second operand 5 states. [2020-10-16 11:24:37,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:24:37,732 INFO L93 Difference]: Finished difference Result 36296 states and 178836 transitions. [2020-10-16 11:24:37,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 11:24:37,733 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-10-16 11:24:37,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:24:37,833 INFO L225 Difference]: With dead ends: 36296 [2020-10-16 11:24:37,833 INFO L226 Difference]: Without dead ends: 36280 [2020-10-16 11:24:37,833 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-16 11:24:38,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36280 states. [2020-10-16 11:24:38,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36280 to 23806. [2020-10-16 11:24:38,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23806 states. [2020-10-16 11:24:38,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23806 states to 23806 states and 125455 transitions. [2020-10-16 11:24:38,986 INFO L78 Accepts]: Start accepts. Automaton has 23806 states and 125455 transitions. Word has length 13 [2020-10-16 11:24:38,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:24:38,986 INFO L481 AbstractCegarLoop]: Abstraction has 23806 states and 125455 transitions. [2020-10-16 11:24:38,987 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 11:24:38,987 INFO L276 IsEmpty]: Start isEmpty. Operand 23806 states and 125455 transitions. [2020-10-16 11:24:38,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 11:24:38,987 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:24:38,987 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:24:38,987 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2020-10-16 11:24:38,987 INFO L429 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:24:38,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:24:38,988 INFO L82 PathProgramCache]: Analyzing trace with hash -2123666531, now seen corresponding path program 1 times [2020-10-16 11:24:38,988 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:24:38,988 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522933385] [2020-10-16 11:24:38,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:24:38,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:24:39,017 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:24:39,018 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522933385] [2020-10-16 11:24:39,018 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [156415290] [2020-10-16 11:24:39,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 11:24:39,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:24:39,102 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-16 11:24:39,103 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:24:39,120 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:24:39,120 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 11:24:39,120 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-10-16 11:24:39,120 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141557301] [2020-10-16 11:24:39,120 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 11:24:39,121 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:24:39,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 11:24:39,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-16 11:24:39,121 INFO L87 Difference]: Start difference. First operand 23806 states and 125455 transitions. Second operand 9 states. [2020-10-16 11:24:39,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:24:39,613 INFO L93 Difference]: Finished difference Result 56720 states and 262685 transitions. [2020-10-16 11:24:39,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 11:24:39,614 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 15 [2020-10-16 11:24:39,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:24:39,770 INFO L225 Difference]: With dead ends: 56720 [2020-10-16 11:24:39,770 INFO L226 Difference]: Without dead ends: 56704 [2020-10-16 11:24:39,770 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=89, Invalid=183, Unknown=0, NotChecked=0, Total=272 [2020-10-16 11:24:42,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56704 states. [2020-10-16 11:24:43,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56704 to 23629. [2020-10-16 11:24:43,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23629 states. [2020-10-16 11:24:43,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23629 states to 23629 states and 124418 transitions. [2020-10-16 11:24:43,409 INFO L78 Accepts]: Start accepts. Automaton has 23629 states and 124418 transitions. Word has length 15 [2020-10-16 11:24:43,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:24:43,409 INFO L481 AbstractCegarLoop]: Abstraction has 23629 states and 124418 transitions. [2020-10-16 11:24:43,410 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 11:24:43,410 INFO L276 IsEmpty]: Start isEmpty. Operand 23629 states and 124418 transitions. [2020-10-16 11:24:43,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 11:24:43,410 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:24:43,410 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:24:43,610 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable78 [2020-10-16 11:24:43,611 INFO L429 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:24:43,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:24:43,611 INFO L82 PathProgramCache]: Analyzing trace with hash 950817645, now seen corresponding path program 2 times [2020-10-16 11:24:43,612 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:24:43,612 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548905729] [2020-10-16 11:24:43,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:24:43,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:24:43,642 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 11:24:43,643 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548905729] [2020-10-16 11:24:43,643 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:24:43,643 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-16 11:24:43,643 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992164334] [2020-10-16 11:24:43,643 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 11:24:43,643 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:24:43,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 11:24:43,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-16 11:24:43,644 INFO L87 Difference]: Start difference. First operand 23629 states and 124418 transitions. Second operand 7 states. [2020-10-16 11:24:44,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:24:44,140 INFO L93 Difference]: Finished difference Result 58078 states and 269185 transitions. [2020-10-16 11:24:44,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 11:24:44,141 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-10-16 11:24:44,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:24:44,312 INFO L225 Difference]: With dead ends: 58078 [2020-10-16 11:24:44,312 INFO L226 Difference]: Without dead ends: 58061 [2020-10-16 11:24:44,313 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-10-16 11:24:45,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58061 states. [2020-10-16 11:24:45,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58061 to 23109. [2020-10-16 11:24:45,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23109 states. [2020-10-16 11:24:45,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23109 states to 23109 states and 121651 transitions. [2020-10-16 11:24:45,811 INFO L78 Accepts]: Start accepts. Automaton has 23109 states and 121651 transitions. Word has length 15 [2020-10-16 11:24:45,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:24:45,811 INFO L481 AbstractCegarLoop]: Abstraction has 23109 states and 121651 transitions. [2020-10-16 11:24:45,811 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 11:24:45,811 INFO L276 IsEmpty]: Start isEmpty. Operand 23109 states and 121651 transitions. [2020-10-16 11:24:45,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-16 11:24:45,812 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:24:45,812 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:24:45,812 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2020-10-16 11:24:45,812 INFO L429 AbstractCegarLoop]: === Iteration 6 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:24:45,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:24:45,812 INFO L82 PathProgramCache]: Analyzing trace with hash -2120658652, now seen corresponding path program 1 times [2020-10-16 11:24:45,812 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:24:45,813 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130348772] [2020-10-16 11:24:45,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:24:45,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:24:45,838 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-16 11:24:45,838 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130348772] [2020-10-16 11:24:45,838 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:24:45,838 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 11:24:45,839 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839044519] [2020-10-16 11:24:45,839 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 11:24:45,839 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:24:45,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 11:24:45,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 11:24:45,840 INFO L87 Difference]: Start difference. First operand 23109 states and 121651 transitions. Second operand 5 states. [2020-10-16 11:24:46,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:24:46,654 INFO L93 Difference]: Finished difference Result 41885 states and 209629 transitions. [2020-10-16 11:24:46,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 11:24:46,655 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-10-16 11:24:46,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:24:46,780 INFO L225 Difference]: With dead ends: 41885 [2020-10-16 11:24:46,780 INFO L226 Difference]: Without dead ends: 41856 [2020-10-16 11:24:46,780 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-16 11:24:47,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41856 states. [2020-10-16 11:24:48,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41856 to 28237. [2020-10-16 11:24:48,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28237 states. [2020-10-16 11:24:48,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28237 states to 28237 states and 150261 transitions. [2020-10-16 11:24:48,173 INFO L78 Accepts]: Start accepts. Automaton has 28237 states and 150261 transitions. Word has length 17 [2020-10-16 11:24:48,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:24:48,173 INFO L481 AbstractCegarLoop]: Abstraction has 28237 states and 150261 transitions. [2020-10-16 11:24:48,173 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 11:24:48,173 INFO L276 IsEmpty]: Start isEmpty. Operand 28237 states and 150261 transitions. [2020-10-16 11:24:48,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-16 11:24:48,174 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:24:48,174 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:24:48,174 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2020-10-16 11:24:48,174 INFO L429 AbstractCegarLoop]: === Iteration 7 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:24:48,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:24:48,174 INFO L82 PathProgramCache]: Analyzing trace with hash 269605662, now seen corresponding path program 1 times [2020-10-16 11:24:48,174 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:24:48,174 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481254520] [2020-10-16 11:24:48,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:24:48,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:24:48,205 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-16 11:24:48,206 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481254520] [2020-10-16 11:24:48,206 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1631203087] [2020-10-16 11:24:48,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 11:24:48,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:24:48,292 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-16 11:24:48,292 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:24:48,310 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-16 11:24:48,311 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 11:24:48,311 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-10-16 11:24:48,311 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674836410] [2020-10-16 11:24:48,311 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 11:24:48,312 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:24:48,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 11:24:48,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-16 11:24:48,312 INFO L87 Difference]: Start difference. First operand 28237 states and 150261 transitions. Second operand 9 states. [2020-10-16 11:24:48,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:24:48,859 INFO L93 Difference]: Finished difference Result 66831 states and 314874 transitions. [2020-10-16 11:24:48,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 11:24:48,859 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 19 [2020-10-16 11:24:48,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:24:49,067 INFO L225 Difference]: With dead ends: 66831 [2020-10-16 11:24:49,068 INFO L226 Difference]: Without dead ends: 66807 [2020-10-16 11:24:49,068 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=89, Invalid=183, Unknown=0, NotChecked=0, Total=272 [2020-10-16 11:24:49,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66807 states. [2020-10-16 11:24:51,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66807 to 28673. [2020-10-16 11:24:51,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28673 states. [2020-10-16 11:24:51,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28673 states to 28673 states and 152375 transitions. [2020-10-16 11:24:51,540 INFO L78 Accepts]: Start accepts. Automaton has 28673 states and 152375 transitions. Word has length 19 [2020-10-16 11:24:51,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:24:51,541 INFO L481 AbstractCegarLoop]: Abstraction has 28673 states and 152375 transitions. [2020-10-16 11:24:51,541 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 11:24:51,541 INFO L276 IsEmpty]: Start isEmpty. Operand 28673 states and 152375 transitions. [2020-10-16 11:24:51,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-16 11:24:51,541 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:24:51,542 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:24:51,754 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable81 [2020-10-16 11:24:51,755 INFO L429 AbstractCegarLoop]: === Iteration 8 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:24:51,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:24:51,755 INFO L82 PathProgramCache]: Analyzing trace with hash -2138468196, now seen corresponding path program 2 times [2020-10-16 11:24:51,756 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:24:51,756 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260611466] [2020-10-16 11:24:51,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:24:51,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:24:51,787 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-16 11:24:51,787 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260611466] [2020-10-16 11:24:51,787 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:24:51,788 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-16 11:24:51,788 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144270587] [2020-10-16 11:24:51,788 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 11:24:51,788 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:24:51,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 11:24:51,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-16 11:24:51,788 INFO L87 Difference]: Start difference. First operand 28673 states and 152375 transitions. Second operand 7 states. [2020-10-16 11:24:52,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:24:52,313 INFO L93 Difference]: Finished difference Result 68538 states and 323189 transitions. [2020-10-16 11:24:52,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 11:24:52,313 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-10-16 11:24:52,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:24:52,500 INFO L225 Difference]: With dead ends: 68538 [2020-10-16 11:24:52,500 INFO L226 Difference]: Without dead ends: 68505 [2020-10-16 11:24:52,500 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-10-16 11:24:53,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68505 states. [2020-10-16 11:24:54,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68505 to 28061. [2020-10-16 11:24:54,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28061 states. [2020-10-16 11:24:54,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28061 states to 28061 states and 149307 transitions. [2020-10-16 11:24:54,183 INFO L78 Accepts]: Start accepts. Automaton has 28061 states and 149307 transitions. Word has length 19 [2020-10-16 11:24:54,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:24:54,184 INFO L481 AbstractCegarLoop]: Abstraction has 28061 states and 149307 transitions. [2020-10-16 11:24:54,184 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 11:24:54,184 INFO L276 IsEmpty]: Start isEmpty. Operand 28061 states and 149307 transitions. [2020-10-16 11:24:54,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-16 11:24:54,184 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:24:54,185 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:24:54,185 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2020-10-16 11:24:54,185 INFO L429 AbstractCegarLoop]: === Iteration 9 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:24:54,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:24:54,185 INFO L82 PathProgramCache]: Analyzing trace with hash -2138444729, now seen corresponding path program 1 times [2020-10-16 11:24:54,185 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:24:54,185 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122721759] [2020-10-16 11:24:54,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:24:54,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:24:54,220 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-16 11:24:54,220 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122721759] [2020-10-16 11:24:54,220 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:24:54,220 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-16 11:24:54,221 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889508393] [2020-10-16 11:24:54,221 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 11:24:54,221 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:24:54,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 11:24:54,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-16 11:24:54,221 INFO L87 Difference]: Start difference. First operand 28061 states and 149307 transitions. Second operand 7 states. [2020-10-16 11:24:55,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:24:55,262 INFO L93 Difference]: Finished difference Result 69070 states and 326154 transitions. [2020-10-16 11:24:55,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 11:24:55,263 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-10-16 11:24:55,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:24:55,463 INFO L225 Difference]: With dead ends: 69070 [2020-10-16 11:24:55,463 INFO L226 Difference]: Without dead ends: 69037 [2020-10-16 11:24:55,463 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-10-16 11:24:56,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69037 states. [2020-10-16 11:24:57,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69037 to 28938. [2020-10-16 11:24:57,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28938 states. [2020-10-16 11:24:57,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28938 states to 28938 states and 153909 transitions. [2020-10-16 11:24:57,165 INFO L78 Accepts]: Start accepts. Automaton has 28938 states and 153909 transitions. Word has length 19 [2020-10-16 11:24:57,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:24:57,165 INFO L481 AbstractCegarLoop]: Abstraction has 28938 states and 153909 transitions. [2020-10-16 11:24:57,165 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 11:24:57,166 INFO L276 IsEmpty]: Start isEmpty. Operand 28938 states and 153909 transitions. [2020-10-16 11:24:57,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-16 11:24:57,166 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:24:57,166 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:24:57,166 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2020-10-16 11:24:57,167 INFO L429 AbstractCegarLoop]: === Iteration 10 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:24:57,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:24:57,167 INFO L82 PathProgramCache]: Analyzing trace with hash -2117255609, now seen corresponding path program 2 times [2020-10-16 11:24:57,167 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:24:57,167 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305452257] [2020-10-16 11:24:57,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:24:57,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:24:57,197 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-16 11:24:57,198 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305452257] [2020-10-16 11:24:57,198 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:24:57,198 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-16 11:24:57,198 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321574821] [2020-10-16 11:24:57,199 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 11:24:57,199 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:24:57,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 11:24:57,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-16 11:24:57,200 INFO L87 Difference]: Start difference. First operand 28938 states and 153909 transitions. Second operand 7 states. [2020-10-16 11:24:57,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:24:57,753 INFO L93 Difference]: Finished difference Result 70096 states and 331298 transitions. [2020-10-16 11:24:57,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 11:24:57,754 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-10-16 11:24:57,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:24:57,961 INFO L225 Difference]: With dead ends: 70096 [2020-10-16 11:24:57,962 INFO L226 Difference]: Without dead ends: 70063 [2020-10-16 11:24:57,962 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-10-16 11:24:59,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70063 states. [2020-10-16 11:25:00,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70063 to 29094. [2020-10-16 11:25:00,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29094 states. [2020-10-16 11:25:00,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29094 states to 29094 states and 154883 transitions. [2020-10-16 11:25:00,383 INFO L78 Accepts]: Start accepts. Automaton has 29094 states and 154883 transitions. Word has length 19 [2020-10-16 11:25:00,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:25:00,383 INFO L481 AbstractCegarLoop]: Abstraction has 29094 states and 154883 transitions. [2020-10-16 11:25:00,383 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 11:25:00,383 INFO L276 IsEmpty]: Start isEmpty. Operand 29094 states and 154883 transitions. [2020-10-16 11:25:00,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-16 11:25:00,384 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:25:00,384 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:25:00,385 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2020-10-16 11:25:00,385 INFO L429 AbstractCegarLoop]: === Iteration 11 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:25:00,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:25:00,385 INFO L82 PathProgramCache]: Analyzing trace with hash 1393024961, now seen corresponding path program 1 times [2020-10-16 11:25:00,385 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:25:00,385 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672319655] [2020-10-16 11:25:00,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:25:00,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:25:00,436 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-16 11:25:00,436 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672319655] [2020-10-16 11:25:00,436 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1992979210] [2020-10-16 11:25:00,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 11:25:00,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:25:00,521 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-16 11:25:00,521 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:25:00,542 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-16 11:25:00,543 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 11:25:00,543 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-10-16 11:25:00,543 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723574788] [2020-10-16 11:25:00,543 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 11:25:00,543 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:25:00,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 11:25:00,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-10-16 11:25:00,544 INFO L87 Difference]: Start difference. First operand 29094 states and 154883 transitions. Second operand 11 states. [2020-10-16 11:25:01,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:25:01,701 INFO L93 Difference]: Finished difference Result 100731 states and 448596 transitions. [2020-10-16 11:25:01,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 11:25:01,702 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 21 [2020-10-16 11:25:01,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:25:02,020 INFO L225 Difference]: With dead ends: 100731 [2020-10-16 11:25:02,020 INFO L226 Difference]: Without dead ends: 100715 [2020-10-16 11:25:02,021 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 254 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-10-16 11:25:03,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100715 states. [2020-10-16 11:25:06,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100715 to 28723. [2020-10-16 11:25:06,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28723 states. [2020-10-16 11:25:06,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28723 states to 28723 states and 152772 transitions. [2020-10-16 11:25:06,935 INFO L78 Accepts]: Start accepts. Automaton has 28723 states and 152772 transitions. Word has length 21 [2020-10-16 11:25:06,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:25:06,936 INFO L481 AbstractCegarLoop]: Abstraction has 28723 states and 152772 transitions. [2020-10-16 11:25:06,936 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 11:25:06,936 INFO L276 IsEmpty]: Start isEmpty. Operand 28723 states and 152772 transitions. [2020-10-16 11:25:06,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-16 11:25:06,937 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:25:06,937 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:25:07,137 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85,34 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 11:25:07,138 INFO L429 AbstractCegarLoop]: === Iteration 12 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:25:07,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:25:07,138 INFO L82 PathProgramCache]: Analyzing trace with hash 1414214081, now seen corresponding path program 2 times [2020-10-16 11:25:07,139 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:25:07,139 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507266285] [2020-10-16 11:25:07,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:25:07,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:25:07,186 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-16 11:25:07,187 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507266285] [2020-10-16 11:25:07,187 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1825868632] [2020-10-16 11:25:07,187 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 11:25:07,277 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 11:25:07,278 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 11:25:07,279 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-16 11:25:07,279 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:25:07,301 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-16 11:25:07,301 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 11:25:07,301 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-10-16 11:25:07,302 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296136649] [2020-10-16 11:25:07,302 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 11:25:07,302 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:25:07,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 11:25:07,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-10-16 11:25:07,302 INFO L87 Difference]: Start difference. First operand 28723 states and 152772 transitions. Second operand 11 states. [2020-10-16 11:25:08,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:25:08,422 INFO L93 Difference]: Finished difference Result 99884 states and 444368 transitions. [2020-10-16 11:25:08,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 11:25:08,423 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 21 [2020-10-16 11:25:08,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:25:08,718 INFO L225 Difference]: With dead ends: 99884 [2020-10-16 11:25:08,719 INFO L226 Difference]: Without dead ends: 99863 [2020-10-16 11:25:08,719 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 253 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-10-16 11:25:10,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99863 states. [2020-10-16 11:25:11,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99863 to 28343. [2020-10-16 11:25:11,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28343 states. [2020-10-16 11:25:11,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28343 states to 28343 states and 150639 transitions. [2020-10-16 11:25:11,538 INFO L78 Accepts]: Start accepts. Automaton has 28343 states and 150639 transitions. Word has length 21 [2020-10-16 11:25:11,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:25:11,538 INFO L481 AbstractCegarLoop]: Abstraction has 28343 states and 150639 transitions. [2020-10-16 11:25:11,539 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 11:25:11,539 INFO L276 IsEmpty]: Start isEmpty. Operand 28343 states and 150639 transitions. [2020-10-16 11:25:11,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-16 11:25:11,540 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:25:11,540 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:25:11,740 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable86 [2020-10-16 11:25:11,740 INFO L429 AbstractCegarLoop]: === Iteration 13 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:25:11,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:25:11,741 INFO L82 PathProgramCache]: Analyzing trace with hash -2073547329, now seen corresponding path program 3 times [2020-10-16 11:25:11,741 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:25:11,742 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597524677] [2020-10-16 11:25:11,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:25:11,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:25:11,789 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-16 11:25:11,790 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597524677] [2020-10-16 11:25:11,790 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:25:11,790 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-16 11:25:11,790 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614919730] [2020-10-16 11:25:11,791 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 11:25:11,791 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:25:11,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 11:25:11,791 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-16 11:25:11,791 INFO L87 Difference]: Start difference. First operand 28343 states and 150639 transitions. Second operand 9 states. [2020-10-16 11:25:12,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:25:12,856 INFO L93 Difference]: Finished difference Result 100063 states and 445271 transitions. [2020-10-16 11:25:12,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 11:25:12,856 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-10-16 11:25:12,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:25:13,133 INFO L225 Difference]: With dead ends: 100063 [2020-10-16 11:25:13,133 INFO L226 Difference]: Without dead ends: 100047 [2020-10-16 11:25:13,133 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-16 11:25:14,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100047 states. [2020-10-16 11:25:15,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100047 to 27662. [2020-10-16 11:25:15,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27662 states. [2020-10-16 11:25:15,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27662 states to 27662 states and 147100 transitions. [2020-10-16 11:25:15,935 INFO L78 Accepts]: Start accepts. Automaton has 27662 states and 147100 transitions. Word has length 21 [2020-10-16 11:25:15,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:25:15,936 INFO L481 AbstractCegarLoop]: Abstraction has 27662 states and 147100 transitions. [2020-10-16 11:25:15,936 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 11:25:15,936 INFO L276 IsEmpty]: Start isEmpty. Operand 27662 states and 147100 transitions. [2020-10-16 11:25:15,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-16 11:25:15,937 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:25:15,937 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:25:15,937 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2020-10-16 11:25:15,937 INFO L429 AbstractCegarLoop]: === Iteration 14 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:25:15,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:25:15,937 INFO L82 PathProgramCache]: Analyzing trace with hash -2051019009, now seen corresponding path program 4 times [2020-10-16 11:25:15,937 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:25:15,937 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322267379] [2020-10-16 11:25:15,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:25:15,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:25:15,990 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-16 11:25:15,990 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322267379] [2020-10-16 11:25:15,990 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:25:15,991 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-16 11:25:15,991 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173647827] [2020-10-16 11:25:15,991 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 11:25:15,991 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:25:15,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 11:25:15,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-16 11:25:15,992 INFO L87 Difference]: Start difference. First operand 27662 states and 147100 transitions. Second operand 9 states. [2020-10-16 11:25:17,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:25:17,674 INFO L93 Difference]: Finished difference Result 99531 states and 442783 transitions. [2020-10-16 11:25:17,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 11:25:17,675 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-10-16 11:25:17,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:25:17,972 INFO L225 Difference]: With dead ends: 99531 [2020-10-16 11:25:17,972 INFO L226 Difference]: Without dead ends: 99510 [2020-10-16 11:25:17,973 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-16 11:25:18,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99510 states. [2020-10-16 11:25:19,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99510 to 27286. [2020-10-16 11:25:19,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27286 states. [2020-10-16 11:25:20,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27286 states to 27286 states and 144979 transitions. [2020-10-16 11:25:20,009 INFO L78 Accepts]: Start accepts. Automaton has 27286 states and 144979 transitions. Word has length 21 [2020-10-16 11:25:20,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:25:20,009 INFO L481 AbstractCegarLoop]: Abstraction has 27286 states and 144979 transitions. [2020-10-16 11:25:20,009 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 11:25:20,010 INFO L276 IsEmpty]: Start isEmpty. Operand 27286 states and 144979 transitions. [2020-10-16 11:25:20,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-16 11:25:20,010 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:25:20,011 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:25:20,011 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2020-10-16 11:25:20,011 INFO L429 AbstractCegarLoop]: === Iteration 15 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:25:20,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:25:20,011 INFO L82 PathProgramCache]: Analyzing trace with hash 102150333, now seen corresponding path program 1 times [2020-10-16 11:25:20,011 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:25:20,011 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553692935] [2020-10-16 11:25:20,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:25:20,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:25:20,028 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-16 11:25:20,028 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553692935] [2020-10-16 11:25:20,028 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:25:20,028 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 11:25:20,029 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785101503] [2020-10-16 11:25:20,029 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 11:25:20,029 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:25:20,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 11:25:20,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 11:25:20,030 INFO L87 Difference]: Start difference. First operand 27286 states and 144979 transitions. Second operand 5 states. [2020-10-16 11:25:20,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:25:20,608 INFO L93 Difference]: Finished difference Result 49004 states and 248721 transitions. [2020-10-16 11:25:20,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 11:25:20,608 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-10-16 11:25:20,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:25:20,768 INFO L225 Difference]: With dead ends: 49004 [2020-10-16 11:25:20,768 INFO L226 Difference]: Without dead ends: 48958 [2020-10-16 11:25:20,769 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-16 11:25:21,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48958 states. [2020-10-16 11:25:22,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48958 to 33985. [2020-10-16 11:25:22,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33985 states. [2020-10-16 11:25:22,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33985 states to 33985 states and 181777 transitions. [2020-10-16 11:25:22,310 INFO L78 Accepts]: Start accepts. Automaton has 33985 states and 181777 transitions. Word has length 21 [2020-10-16 11:25:22,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:25:22,310 INFO L481 AbstractCegarLoop]: Abstraction has 33985 states and 181777 transitions. [2020-10-16 11:25:22,310 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 11:25:22,310 INFO L276 IsEmpty]: Start isEmpty. Operand 33985 states and 181777 transitions. [2020-10-16 11:25:22,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-16 11:25:22,311 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:25:22,311 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:25:22,311 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2020-10-16 11:25:22,311 INFO L429 AbstractCegarLoop]: === Iteration 16 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:25:22,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:25:22,312 INFO L82 PathProgramCache]: Analyzing trace with hash 1130516927, now seen corresponding path program 5 times [2020-10-16 11:25:22,312 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:25:22,312 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681793807] [2020-10-16 11:25:22,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:25:22,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:25:22,359 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-16 11:25:22,360 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681793807] [2020-10-16 11:25:22,360 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:25:22,360 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-16 11:25:22,360 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134494652] [2020-10-16 11:25:22,361 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 11:25:22,361 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:25:22,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 11:25:22,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-16 11:25:22,362 INFO L87 Difference]: Start difference. First operand 33985 states and 181777 transitions. Second operand 9 states. [2020-10-16 11:25:24,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:25:24,131 INFO L93 Difference]: Finished difference Result 115592 states and 523747 transitions. [2020-10-16 11:25:24,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 11:25:24,131 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-10-16 11:25:24,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:25:24,493 INFO L225 Difference]: With dead ends: 115592 [2020-10-16 11:25:24,493 INFO L226 Difference]: Without dead ends: 115567 [2020-10-16 11:25:24,493 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-16 11:25:25,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115567 states. [2020-10-16 11:25:30,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115567 to 33074. [2020-10-16 11:25:30,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33074 states. [2020-10-16 11:25:30,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33074 states to 33074 states and 176935 transitions. [2020-10-16 11:25:30,472 INFO L78 Accepts]: Start accepts. Automaton has 33074 states and 176935 transitions. Word has length 21 [2020-10-16 11:25:30,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:25:30,473 INFO L481 AbstractCegarLoop]: Abstraction has 33074 states and 176935 transitions. [2020-10-16 11:25:30,473 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 11:25:30,473 INFO L276 IsEmpty]: Start isEmpty. Operand 33074 states and 176935 transitions. [2020-10-16 11:25:30,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-16 11:25:30,474 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:25:30,474 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:25:30,474 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2020-10-16 11:25:30,475 INFO L429 AbstractCegarLoop]: === Iteration 17 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:25:30,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:25:30,475 INFO L82 PathProgramCache]: Analyzing trace with hash 1131856127, now seen corresponding path program 6 times [2020-10-16 11:25:30,475 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:25:30,475 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515159156] [2020-10-16 11:25:30,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:25:30,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:25:30,525 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-16 11:25:30,526 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515159156] [2020-10-16 11:25:30,526 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:25:30,526 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-16 11:25:30,526 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741393664] [2020-10-16 11:25:30,527 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 11:25:30,527 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:25:30,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 11:25:30,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-16 11:25:30,527 INFO L87 Difference]: Start difference. First operand 33074 states and 176935 transitions. Second operand 9 states. [2020-10-16 11:25:31,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:25:31,690 INFO L93 Difference]: Finished difference Result 114402 states and 517732 transitions. [2020-10-16 11:25:31,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 11:25:31,690 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-10-16 11:25:31,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:25:32,019 INFO L225 Difference]: With dead ends: 114402 [2020-10-16 11:25:32,019 INFO L226 Difference]: Without dead ends: 114371 [2020-10-16 11:25:32,019 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-16 11:25:33,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114371 states. [2020-10-16 11:25:35,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114371 to 31960. [2020-10-16 11:25:35,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31960 states. [2020-10-16 11:25:35,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31960 states to 31960 states and 171209 transitions. [2020-10-16 11:25:35,136 INFO L78 Accepts]: Start accepts. Automaton has 31960 states and 171209 transitions. Word has length 21 [2020-10-16 11:25:35,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:25:35,136 INFO L481 AbstractCegarLoop]: Abstraction has 31960 states and 171209 transitions. [2020-10-16 11:25:35,136 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 11:25:35,136 INFO L276 IsEmpty]: Start isEmpty. Operand 31960 states and 171209 transitions. [2020-10-16 11:25:35,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-16 11:25:35,138 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:25:35,138 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:25:35,138 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2020-10-16 11:25:35,138 INFO L429 AbstractCegarLoop]: === Iteration 18 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:25:35,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:25:35,138 INFO L82 PathProgramCache]: Analyzing trace with hash -1106577557, now seen corresponding path program 1 times [2020-10-16 11:25:35,138 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:25:35,138 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715263642] [2020-10-16 11:25:35,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:25:35,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:25:35,173 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-16 11:25:35,173 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715263642] [2020-10-16 11:25:35,173 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [863205280] [2020-10-16 11:25:35,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 11:25:35,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:25:35,251 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-16 11:25:35,251 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:25:35,267 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-16 11:25:35,267 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 11:25:35,267 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-10-16 11:25:35,267 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831966776] [2020-10-16 11:25:35,268 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 11:25:35,268 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:25:35,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 11:25:35,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-16 11:25:35,268 INFO L87 Difference]: Start difference. First operand 31960 states and 171209 transitions. Second operand 9 states. [2020-10-16 11:25:35,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:25:35,896 INFO L93 Difference]: Finished difference Result 75380 states and 361389 transitions. [2020-10-16 11:25:35,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 11:25:35,897 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 23 [2020-10-16 11:25:35,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:25:36,112 INFO L225 Difference]: With dead ends: 75380 [2020-10-16 11:25:36,112 INFO L226 Difference]: Without dead ends: 75344 [2020-10-16 11:25:36,112 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=89, Invalid=183, Unknown=0, NotChecked=0, Total=272 [2020-10-16 11:25:36,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75344 states. [2020-10-16 11:25:38,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75344 to 32974. [2020-10-16 11:25:38,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32974 states. [2020-10-16 11:25:38,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32974 states to 32974 states and 176363 transitions. [2020-10-16 11:25:38,578 INFO L78 Accepts]: Start accepts. Automaton has 32974 states and 176363 transitions. Word has length 23 [2020-10-16 11:25:38,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:25:38,578 INFO L481 AbstractCegarLoop]: Abstraction has 32974 states and 176363 transitions. [2020-10-16 11:25:38,578 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 11:25:38,578 INFO L276 IsEmpty]: Start isEmpty. Operand 32974 states and 176363 transitions. [2020-10-16 11:25:38,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-16 11:25:38,579 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:25:38,580 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:25:38,780 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92,36 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 11:25:38,781 INFO L429 AbstractCegarLoop]: === Iteration 19 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:25:38,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:25:38,781 INFO L82 PathProgramCache]: Analyzing trace with hash 1026706248, now seen corresponding path program 1 times [2020-10-16 11:25:38,781 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:25:38,782 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969882370] [2020-10-16 11:25:38,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:25:38,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:25:38,817 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-16 11:25:38,818 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969882370] [2020-10-16 11:25:38,818 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [966718875] [2020-10-16 11:25:38,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 11:25:38,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:25:38,910 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-16 11:25:38,911 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:25:38,941 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-16 11:25:38,941 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 11:25:38,941 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-10-16 11:25:38,942 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890726397] [2020-10-16 11:25:38,946 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 11:25:38,946 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:25:38,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 11:25:38,947 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-16 11:25:38,947 INFO L87 Difference]: Start difference. First operand 32974 states and 176363 transitions. Second operand 9 states. [2020-10-16 11:25:39,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:25:39,983 INFO L93 Difference]: Finished difference Result 79463 states and 381713 transitions. [2020-10-16 11:25:39,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 11:25:39,983 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 23 [2020-10-16 11:25:39,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:25:40,214 INFO L225 Difference]: With dead ends: 79463 [2020-10-16 11:25:40,214 INFO L226 Difference]: Without dead ends: 79421 [2020-10-16 11:25:40,215 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=89, Invalid=183, Unknown=0, NotChecked=0, Total=272 [2020-10-16 11:25:41,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79421 states. [2020-10-16 11:25:42,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79421 to 33977. [2020-10-16 11:25:42,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33977 states. [2020-10-16 11:25:42,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33977 states to 33977 states and 181698 transitions. [2020-10-16 11:25:42,772 INFO L78 Accepts]: Start accepts. Automaton has 33977 states and 181698 transitions. Word has length 23 [2020-10-16 11:25:42,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:25:42,773 INFO L481 AbstractCegarLoop]: Abstraction has 33977 states and 181698 transitions. [2020-10-16 11:25:42,773 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 11:25:42,773 INFO L276 IsEmpty]: Start isEmpty. Operand 33977 states and 181698 transitions. [2020-10-16 11:25:42,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-16 11:25:42,775 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:25:42,775 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:25:42,975 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93,37 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 11:25:42,976 INFO L429 AbstractCegarLoop]: === Iteration 20 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:25:42,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:25:42,976 INFO L82 PathProgramCache]: Analyzing trace with hash -617779723, now seen corresponding path program 2 times [2020-10-16 11:25:42,977 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:25:42,977 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556247430] [2020-10-16 11:25:42,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:25:42,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:25:43,013 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-16 11:25:43,013 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556247430] [2020-10-16 11:25:43,014 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:25:43,014 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-16 11:25:43,014 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001019419] [2020-10-16 11:25:43,014 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 11:25:43,014 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:25:43,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 11:25:43,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-16 11:25:43,015 INFO L87 Difference]: Start difference. First operand 33977 states and 181698 transitions. Second operand 7 states. [2020-10-16 11:25:43,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:25:43,645 INFO L93 Difference]: Finished difference Result 80867 states and 388763 transitions. [2020-10-16 11:25:43,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 11:25:43,645 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-10-16 11:25:43,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:25:43,903 INFO L225 Difference]: With dead ends: 80867 [2020-10-16 11:25:43,903 INFO L226 Difference]: Without dead ends: 80812 [2020-10-16 11:25:43,904 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-10-16 11:25:44,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80812 states. [2020-10-16 11:25:46,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80812 to 34223. [2020-10-16 11:25:46,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34223 states. [2020-10-16 11:25:46,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34223 states to 34223 states and 183033 transitions. [2020-10-16 11:25:46,557 INFO L78 Accepts]: Start accepts. Automaton has 34223 states and 183033 transitions. Word has length 23 [2020-10-16 11:25:46,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:25:46,557 INFO L481 AbstractCegarLoop]: Abstraction has 34223 states and 183033 transitions. [2020-10-16 11:25:46,557 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 11:25:46,558 INFO L276 IsEmpty]: Start isEmpty. Operand 34223 states and 183033 transitions. [2020-10-16 11:25:46,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-16 11:25:46,559 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:25:46,559 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:25:46,560 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2020-10-16 11:25:46,560 INFO L429 AbstractCegarLoop]: === Iteration 21 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:25:46,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:25:46,560 INFO L82 PathProgramCache]: Analyzing trace with hash -617778328, now seen corresponding path program 2 times [2020-10-16 11:25:46,560 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:25:46,560 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022536095] [2020-10-16 11:25:46,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:25:46,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:25:46,593 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-16 11:25:46,593 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022536095] [2020-10-16 11:25:46,593 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:25:46,594 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-16 11:25:46,594 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688592091] [2020-10-16 11:25:46,594 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 11:25:46,594 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:25:46,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 11:25:46,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-16 11:25:46,594 INFO L87 Difference]: Start difference. First operand 34223 states and 183033 transitions. Second operand 7 states. [2020-10-16 11:25:47,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:25:47,221 INFO L93 Difference]: Finished difference Result 80887 states and 388540 transitions. [2020-10-16 11:25:47,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 11:25:47,222 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-10-16 11:25:47,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:25:47,476 INFO L225 Difference]: With dead ends: 80887 [2020-10-16 11:25:47,476 INFO L226 Difference]: Without dead ends: 80832 [2020-10-16 11:25:47,476 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-10-16 11:25:48,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80832 states. [2020-10-16 11:25:50,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80832 to 34508. [2020-10-16 11:25:50,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34508 states. [2020-10-16 11:25:50,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34508 states to 34508 states and 184670 transitions. [2020-10-16 11:25:50,211 INFO L78 Accepts]: Start accepts. Automaton has 34508 states and 184670 transitions. Word has length 23 [2020-10-16 11:25:50,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:25:50,211 INFO L481 AbstractCegarLoop]: Abstraction has 34508 states and 184670 transitions. [2020-10-16 11:25:50,211 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 11:25:50,212 INFO L276 IsEmpty]: Start isEmpty. Operand 34508 states and 184670 transitions. [2020-10-16 11:25:50,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-16 11:25:50,213 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:25:50,213 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:25:50,213 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2020-10-16 11:25:50,214 INFO L429 AbstractCegarLoop]: === Iteration 22 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:25:50,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:25:50,214 INFO L82 PathProgramCache]: Analyzing trace with hash -617756256, now seen corresponding path program 1 times [2020-10-16 11:25:50,214 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:25:50,214 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853776546] [2020-10-16 11:25:50,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:25:50,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:25:50,247 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-16 11:25:50,247 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853776546] [2020-10-16 11:25:50,248 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:25:50,248 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-16 11:25:50,248 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597544831] [2020-10-16 11:25:50,248 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 11:25:50,249 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:25:50,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 11:25:50,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-16 11:25:50,249 INFO L87 Difference]: Start difference. First operand 34508 states and 184670 transitions. Second operand 7 states. [2020-10-16 11:25:50,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:25:50,908 INFO L93 Difference]: Finished difference Result 83313 states and 401031 transitions. [2020-10-16 11:25:50,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 11:25:50,908 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-10-16 11:25:50,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:25:51,152 INFO L225 Difference]: With dead ends: 83313 [2020-10-16 11:25:51,152 INFO L226 Difference]: Without dead ends: 83258 [2020-10-16 11:25:51,152 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-10-16 11:25:52,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83258 states. [2020-10-16 11:25:53,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83258 to 36258. [2020-10-16 11:25:53,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36258 states. [2020-10-16 11:25:53,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36258 states to 36258 states and 193887 transitions. [2020-10-16 11:25:53,760 INFO L78 Accepts]: Start accepts. Automaton has 36258 states and 193887 transitions. Word has length 23 [2020-10-16 11:25:53,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:25:53,760 INFO L481 AbstractCegarLoop]: Abstraction has 36258 states and 193887 transitions. [2020-10-16 11:25:53,760 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 11:25:53,761 INFO L276 IsEmpty]: Start isEmpty. Operand 36258 states and 193887 transitions. [2020-10-16 11:25:53,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-16 11:25:53,762 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:25:53,763 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:25:53,763 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2020-10-16 11:25:53,763 INFO L429 AbstractCegarLoop]: === Iteration 23 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:25:53,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:25:53,763 INFO L82 PathProgramCache]: Analyzing trace with hash -581716896, now seen corresponding path program 2 times [2020-10-16 11:25:53,763 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:25:53,763 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669292357] [2020-10-16 11:25:53,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:25:53,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:25:53,794 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-16 11:25:53,794 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669292357] [2020-10-16 11:25:53,795 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:25:53,795 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-16 11:25:53,795 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301483340] [2020-10-16 11:25:53,795 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 11:25:53,795 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:25:53,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 11:25:53,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-16 11:25:53,796 INFO L87 Difference]: Start difference. First operand 36258 states and 193887 transitions. Second operand 7 states. [2020-10-16 11:25:54,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:25:54,463 INFO L93 Difference]: Finished difference Result 84364 states and 406246 transitions. [2020-10-16 11:25:54,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 11:25:54,464 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-10-16 11:25:54,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:25:54,707 INFO L225 Difference]: With dead ends: 84364 [2020-10-16 11:25:54,707 INFO L226 Difference]: Without dead ends: 84309 [2020-10-16 11:25:54,707 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-10-16 11:25:55,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84309 states. [2020-10-16 11:25:57,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84309 to 37062. [2020-10-16 11:25:57,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37062 states. [2020-10-16 11:25:57,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37062 states to 37062 states and 198528 transitions. [2020-10-16 11:25:57,503 INFO L78 Accepts]: Start accepts. Automaton has 37062 states and 198528 transitions. Word has length 23 [2020-10-16 11:25:57,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:25:57,503 INFO L481 AbstractCegarLoop]: Abstraction has 37062 states and 198528 transitions. [2020-10-16 11:25:57,503 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 11:25:57,503 INFO L276 IsEmpty]: Start isEmpty. Operand 37062 states and 198528 transitions. [2020-10-16 11:25:57,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-16 11:25:57,506 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:25:57,506 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:25:57,507 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2020-10-16 11:25:57,507 INFO L429 AbstractCegarLoop]: === Iteration 24 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:25:57,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:25:57,507 INFO L82 PathProgramCache]: Analyzing trace with hash 1745706838, now seen corresponding path program 1 times [2020-10-16 11:25:57,507 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:25:57,507 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277493055] [2020-10-16 11:25:57,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:25:57,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:25:57,555 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-16 11:25:57,556 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277493055] [2020-10-16 11:25:57,556 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [50302981] [2020-10-16 11:25:57,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 11:25:57,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:25:57,648 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-16 11:25:57,648 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:25:57,668 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-16 11:25:57,669 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 11:25:57,669 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-10-16 11:25:57,669 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116772342] [2020-10-16 11:25:57,669 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 11:25:57,669 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:25:57,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 11:25:57,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-10-16 11:25:57,670 INFO L87 Difference]: Start difference. First operand 37062 states and 198528 transitions. Second operand 11 states. [2020-10-16 11:25:58,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:25:58,904 INFO L93 Difference]: Finished difference Result 122892 states and 561130 transitions. [2020-10-16 11:25:58,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 11:25:58,904 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2020-10-16 11:25:58,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:25:59,251 INFO L225 Difference]: With dead ends: 122892 [2020-10-16 11:25:59,252 INFO L226 Difference]: Without dead ends: 122862 [2020-10-16 11:25:59,252 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 251 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-10-16 11:26:00,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122862 states. [2020-10-16 11:26:02,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122862 to 36735. [2020-10-16 11:26:02,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36735 states. [2020-10-16 11:26:02,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36735 states to 36735 states and 196486 transitions. [2020-10-16 11:26:02,666 INFO L78 Accepts]: Start accepts. Automaton has 36735 states and 196486 transitions. Word has length 25 [2020-10-16 11:26:02,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:26:02,666 INFO L481 AbstractCegarLoop]: Abstraction has 36735 states and 196486 transitions. [2020-10-16 11:26:02,666 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 11:26:02,666 INFO L276 IsEmpty]: Start isEmpty. Operand 36735 states and 196486 transitions. [2020-10-16 11:26:02,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-16 11:26:02,669 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:26:02,669 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:26:02,870 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable98 [2020-10-16 11:26:02,870 INFO L429 AbstractCegarLoop]: === Iteration 25 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:26:02,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:26:02,871 INFO L82 PathProgramCache]: Analyzing trace with hash 1730856598, now seen corresponding path program 2 times [2020-10-16 11:26:02,871 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:26:02,871 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820518773] [2020-10-16 11:26:02,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:26:02,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:26:02,915 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-16 11:26:02,916 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820518773] [2020-10-16 11:26:02,916 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [216463691] [2020-10-16 11:26:02,916 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 11:26:03,006 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 11:26:03,006 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 11:26:03,007 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-16 11:26:03,008 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:26:03,026 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-16 11:26:03,026 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 11:26:03,026 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-10-16 11:26:03,026 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748492300] [2020-10-16 11:26:03,027 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 11:26:03,027 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:26:03,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 11:26:03,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-10-16 11:26:03,027 INFO L87 Difference]: Start difference. First operand 36735 states and 196486 transitions. Second operand 11 states. [2020-10-16 11:26:04,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:26:04,904 INFO L93 Difference]: Finished difference Result 121506 states and 554103 transitions. [2020-10-16 11:26:04,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 11:26:04,904 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2020-10-16 11:26:04,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:26:05,314 INFO L225 Difference]: With dead ends: 121506 [2020-10-16 11:26:05,314 INFO L226 Difference]: Without dead ends: 121473 [2020-10-16 11:26:05,314 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 251 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-10-16 11:26:06,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121473 states. [2020-10-16 11:26:07,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121473 to 36666. [2020-10-16 11:26:07,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36666 states. [2020-10-16 11:26:12,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36666 states to 36666 states and 195964 transitions. [2020-10-16 11:26:12,097 INFO L78 Accepts]: Start accepts. Automaton has 36666 states and 195964 transitions. Word has length 25 [2020-10-16 11:26:12,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:26:12,097 INFO L481 AbstractCegarLoop]: Abstraction has 36666 states and 195964 transitions. [2020-10-16 11:26:12,097 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 11:26:12,097 INFO L276 IsEmpty]: Start isEmpty. Operand 36666 states and 195964 transitions. [2020-10-16 11:26:12,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-16 11:26:12,101 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:26:12,101 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:26:12,302 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99,39 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 11:26:12,303 INFO L429 AbstractCegarLoop]: === Iteration 26 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:26:12,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:26:12,303 INFO L82 PathProgramCache]: Analyzing trace with hash 1730878670, now seen corresponding path program 1 times [2020-10-16 11:26:12,304 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:26:12,304 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890949219] [2020-10-16 11:26:12,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:26:12,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:26:12,351 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-16 11:26:12,352 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890949219] [2020-10-16 11:26:12,352 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [224604208] [2020-10-16 11:26:12,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 11:26:12,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:26:12,442 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-16 11:26:12,442 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:26:12,461 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-16 11:26:12,461 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 11:26:12,461 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-10-16 11:26:12,461 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427689529] [2020-10-16 11:26:12,461 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 11:26:12,462 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:26:12,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 11:26:12,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-10-16 11:26:12,462 INFO L87 Difference]: Start difference. First operand 36666 states and 195964 transitions. Second operand 11 states. [2020-10-16 11:26:13,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:26:13,645 INFO L93 Difference]: Finished difference Result 120500 states and 549397 transitions. [2020-10-16 11:26:13,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 11:26:13,646 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2020-10-16 11:26:13,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:26:13,998 INFO L225 Difference]: With dead ends: 120500 [2020-10-16 11:26:13,998 INFO L226 Difference]: Without dead ends: 120470 [2020-10-16 11:26:13,998 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 247 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-10-16 11:26:15,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120470 states. [2020-10-16 11:26:17,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120470 to 36343. [2020-10-16 11:26:17,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36343 states. [2020-10-16 11:26:17,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36343 states to 36343 states and 194056 transitions. [2020-10-16 11:26:17,300 INFO L78 Accepts]: Start accepts. Automaton has 36343 states and 194056 transitions. Word has length 25 [2020-10-16 11:26:17,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:26:17,300 INFO L481 AbstractCegarLoop]: Abstraction has 36343 states and 194056 transitions. [2020-10-16 11:26:17,300 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 11:26:17,300 INFO L276 IsEmpty]: Start isEmpty. Operand 36343 states and 194056 transitions. [2020-10-16 11:26:17,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-16 11:26:17,303 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:26:17,303 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:26:17,503 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable100 [2020-10-16 11:26:17,504 INFO L429 AbstractCegarLoop]: === Iteration 27 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:26:17,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:26:17,504 INFO L82 PathProgramCache]: Analyzing trace with hash 1766918030, now seen corresponding path program 2 times [2020-10-16 11:26:17,504 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:26:17,505 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038233702] [2020-10-16 11:26:17,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:26:17,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:26:17,551 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-16 11:26:17,552 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038233702] [2020-10-16 11:26:17,552 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1231115309] [2020-10-16 11:26:17,552 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 11:26:17,638 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 11:26:17,638 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 11:26:17,639 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-16 11:26:17,640 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:26:17,657 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-16 11:26:17,658 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 11:26:17,658 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-10-16 11:26:17,658 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594099638] [2020-10-16 11:26:17,658 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 11:26:17,658 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:26:17,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 11:26:17,659 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-10-16 11:26:17,659 INFO L87 Difference]: Start difference. First operand 36343 states and 194056 transitions. Second operand 11 states. [2020-10-16 11:26:18,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:26:18,917 INFO L93 Difference]: Finished difference Result 119731 states and 545560 transitions. [2020-10-16 11:26:18,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 11:26:18,918 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2020-10-16 11:26:18,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:26:19,320 INFO L225 Difference]: With dead ends: 119731 [2020-10-16 11:26:19,320 INFO L226 Difference]: Without dead ends: 119698 [2020-10-16 11:26:19,321 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-10-16 11:26:21,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119698 states. [2020-10-16 11:26:22,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119698 to 36040. [2020-10-16 11:26:22,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36040 states. [2020-10-16 11:26:22,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36040 states to 36040 states and 192287 transitions. [2020-10-16 11:26:22,581 INFO L78 Accepts]: Start accepts. Automaton has 36040 states and 192287 transitions. Word has length 25 [2020-10-16 11:26:22,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:26:22,581 INFO L481 AbstractCegarLoop]: Abstraction has 36040 states and 192287 transitions. [2020-10-16 11:26:22,581 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 11:26:22,581 INFO L276 IsEmpty]: Start isEmpty. Operand 36040 states and 192287 transitions. [2020-10-16 11:26:22,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-16 11:26:22,584 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:26:22,584 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:26:22,784 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101,41 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 11:26:22,785 INFO L429 AbstractCegarLoop]: === Iteration 28 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:26:22,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:26:22,785 INFO L82 PathProgramCache]: Analyzing trace with hash 1849107924, now seen corresponding path program 3 times [2020-10-16 11:26:22,786 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:26:22,786 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269530557] [2020-10-16 11:26:22,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:26:22,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:26:22,835 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-16 11:26:22,835 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269530557] [2020-10-16 11:26:22,836 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [49581226] [2020-10-16 11:26:22,836 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 11:26:22,922 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-16 11:26:22,923 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 11:26:22,924 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-16 11:26:22,924 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:26:22,944 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-16 11:26:22,945 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 11:26:22,945 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-10-16 11:26:22,945 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512930731] [2020-10-16 11:26:22,945 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 11:26:22,945 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:26:22,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 11:26:22,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-10-16 11:26:22,946 INFO L87 Difference]: Start difference. First operand 36040 states and 192287 transitions. Second operand 11 states. [2020-10-16 11:26:24,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:26:24,554 INFO L93 Difference]: Finished difference Result 119762 states and 545615 transitions. [2020-10-16 11:26:24,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 11:26:24,555 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2020-10-16 11:26:24,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:26:24,919 INFO L225 Difference]: With dead ends: 119762 [2020-10-16 11:26:24,919 INFO L226 Difference]: Without dead ends: 119732 [2020-10-16 11:26:24,920 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 251 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-10-16 11:26:26,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119732 states. [2020-10-16 11:26:30,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119732 to 35475. [2020-10-16 11:26:30,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35475 states. [2020-10-16 11:26:30,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35475 states to 35475 states and 189246 transitions. [2020-10-16 11:26:30,529 INFO L78 Accepts]: Start accepts. Automaton has 35475 states and 189246 transitions. Word has length 25 [2020-10-16 11:26:30,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:26:30,529 INFO L481 AbstractCegarLoop]: Abstraction has 35475 states and 189246 transitions. [2020-10-16 11:26:30,529 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 11:26:30,529 INFO L276 IsEmpty]: Start isEmpty. Operand 35475 states and 189246 transitions. [2020-10-16 11:26:30,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-16 11:26:30,532 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:26:30,532 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:26:30,733 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable102 [2020-10-16 11:26:30,733 INFO L429 AbstractCegarLoop]: === Iteration 29 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:26:30,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:26:30,734 INFO L82 PathProgramCache]: Analyzing trace with hash -1177775680, now seen corresponding path program 4 times [2020-10-16 11:26:30,734 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:26:30,734 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799496146] [2020-10-16 11:26:30,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:26:30,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:26:30,785 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-16 11:26:30,785 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799496146] [2020-10-16 11:26:30,786 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1811711137] [2020-10-16 11:26:30,786 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 11:26:30,876 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 11:26:30,876 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 11:26:30,877 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-16 11:26:30,878 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:26:30,897 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-16 11:26:30,898 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 11:26:30,898 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-10-16 11:26:30,898 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922073455] [2020-10-16 11:26:30,898 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 11:26:30,898 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:26:30,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 11:26:30,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-10-16 11:26:30,899 INFO L87 Difference]: Start difference. First operand 35475 states and 189246 transitions. Second operand 11 states. [2020-10-16 11:26:32,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:26:32,170 INFO L93 Difference]: Finished difference Result 120788 states and 550630 transitions. [2020-10-16 11:26:32,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 11:26:32,171 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2020-10-16 11:26:32,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:26:32,523 INFO L225 Difference]: With dead ends: 120788 [2020-10-16 11:26:32,524 INFO L226 Difference]: Without dead ends: 120755 [2020-10-16 11:26:32,524 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 253 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-10-16 11:26:33,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120755 states. [2020-10-16 11:26:35,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120755 to 35406. [2020-10-16 11:26:35,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35406 states. [2020-10-16 11:26:35,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35406 states to 35406 states and 188724 transitions. [2020-10-16 11:26:35,910 INFO L78 Accepts]: Start accepts. Automaton has 35406 states and 188724 transitions. Word has length 25 [2020-10-16 11:26:35,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:26:35,910 INFO L481 AbstractCegarLoop]: Abstraction has 35406 states and 188724 transitions. [2020-10-16 11:26:35,910 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 11:26:35,910 INFO L276 IsEmpty]: Start isEmpty. Operand 35406 states and 188724 transitions. [2020-10-16 11:26:35,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-16 11:26:35,912 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:26:35,912 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:26:36,118 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable103 [2020-10-16 11:26:36,119 INFO L429 AbstractCegarLoop]: === Iteration 30 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:26:36,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:26:36,119 INFO L82 PathProgramCache]: Analyzing trace with hash -1177752213, now seen corresponding path program 1 times [2020-10-16 11:26:36,120 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:26:36,120 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584682319] [2020-10-16 11:26:36,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:26:36,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:26:36,171 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-16 11:26:36,171 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584682319] [2020-10-16 11:26:36,171 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1207857072] [2020-10-16 11:26:36,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 11:26:36,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:26:36,260 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-16 11:26:36,261 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:26:36,281 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-16 11:26:36,281 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 11:26:36,281 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-10-16 11:26:36,281 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096810433] [2020-10-16 11:26:36,282 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 11:26:36,282 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:26:36,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 11:26:36,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-10-16 11:26:36,282 INFO L87 Difference]: Start difference. First operand 35406 states and 188724 transitions. Second operand 11 states. [2020-10-16 11:26:37,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:26:37,590 INFO L93 Difference]: Finished difference Result 120291 states and 549128 transitions. [2020-10-16 11:26:37,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 11:26:37,591 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2020-10-16 11:26:37,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:26:38,871 INFO L225 Difference]: With dead ends: 120291 [2020-10-16 11:26:38,871 INFO L226 Difference]: Without dead ends: 120261 [2020-10-16 11:26:38,871 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 243 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-10-16 11:26:40,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120261 states. [2020-10-16 11:26:41,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120261 to 35196. [2020-10-16 11:26:41,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35196 states. [2020-10-16 11:26:41,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35196 states to 35196 states and 187476 transitions. [2020-10-16 11:26:41,385 INFO L78 Accepts]: Start accepts. Automaton has 35196 states and 187476 transitions. Word has length 25 [2020-10-16 11:26:41,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:26:41,385 INFO L481 AbstractCegarLoop]: Abstraction has 35196 states and 187476 transitions. [2020-10-16 11:26:41,385 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 11:26:41,385 INFO L276 IsEmpty]: Start isEmpty. Operand 35196 states and 187476 transitions. [2020-10-16 11:26:41,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-16 11:26:41,388 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:26:41,388 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:26:41,588 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104,44 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 11:26:41,589 INFO L429 AbstractCegarLoop]: === Iteration 31 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:26:41,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:26:41,589 INFO L82 PathProgramCache]: Analyzing trace with hash -1141712853, now seen corresponding path program 2 times [2020-10-16 11:26:41,590 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:26:41,590 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941950583] [2020-10-16 11:26:41,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:26:41,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:26:41,639 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-16 11:26:41,639 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941950583] [2020-10-16 11:26:41,639 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [899190979] [2020-10-16 11:26:41,640 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 11:26:41,728 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 11:26:41,729 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 11:26:41,730 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-16 11:26:41,730 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 11:26:41,749 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-16 11:26:41,749 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 11:26:41,749 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-10-16 11:26:41,749 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173727446] [2020-10-16 11:26:41,750 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 11:26:41,750 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:26:41,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 11:26:41,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-10-16 11:26:41,750 INFO L87 Difference]: Start difference. First operand 35196 states and 187476 transitions. Second operand 11 states. [2020-10-16 11:26:42,419 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2020-10-16 11:26:43,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:26:43,182 INFO L93 Difference]: Finished difference Result 119264 states and 544110 transitions. [2020-10-16 11:26:43,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 11:26:43,182 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2020-10-16 11:26:43,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:26:43,523 INFO L225 Difference]: With dead ends: 119264 [2020-10-16 11:26:43,523 INFO L226 Difference]: Without dead ends: 119224 [2020-10-16 11:26:43,523 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 241 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-10-16 11:26:44,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119224 states. [2020-10-16 11:26:48,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119224 to 34815. [2020-10-16 11:26:48,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34815 states. [2020-10-16 11:26:48,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34815 states to 34815 states and 185342 transitions. [2020-10-16 11:26:48,982 INFO L78 Accepts]: Start accepts. Automaton has 34815 states and 185342 transitions. Word has length 25 [2020-10-16 11:26:48,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:26:48,982 INFO L481 AbstractCegarLoop]: Abstraction has 34815 states and 185342 transitions. [2020-10-16 11:26:48,982 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 11:26:48,982 INFO L276 IsEmpty]: Start isEmpty. Operand 34815 states and 185342 transitions. [2020-10-16 11:26:48,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-16 11:26:48,985 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:26:48,985 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:26:49,194 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable105 [2020-10-16 11:26:49,195 INFO L429 AbstractCegarLoop]: === Iteration 32 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:26:49,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:26:49,195 INFO L82 PathProgramCache]: Analyzing trace with hash -980827488, now seen corresponding path program 5 times [2020-10-16 11:26:49,196 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:26:49,196 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649581365] [2020-10-16 11:26:49,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:26:49,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:26:49,245 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-16 11:26:49,245 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649581365] [2020-10-16 11:26:49,245 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:26:49,245 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-16 11:26:49,246 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564590739] [2020-10-16 11:26:49,246 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 11:26:49,246 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:26:49,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 11:26:49,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-16 11:26:49,247 INFO L87 Difference]: Start difference. First operand 34815 states and 185342 transitions. Second operand 9 states. [2020-10-16 11:26:50,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:26:50,410 INFO L93 Difference]: Finished difference Result 119116 states and 542590 transitions. [2020-10-16 11:26:50,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 11:26:50,411 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-10-16 11:26:50,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:26:50,732 INFO L225 Difference]: With dead ends: 119116 [2020-10-16 11:26:50,732 INFO L226 Difference]: Without dead ends: 119086 [2020-10-16 11:26:50,733 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-16 11:26:51,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119086 states. [2020-10-16 11:26:53,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119086 to 34044. [2020-10-16 11:26:53,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34044 states. [2020-10-16 11:26:54,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34044 states to 34044 states and 181257 transitions. [2020-10-16 11:26:54,031 INFO L78 Accepts]: Start accepts. Automaton has 34044 states and 181257 transitions. Word has length 25 [2020-10-16 11:26:54,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:26:54,031 INFO L481 AbstractCegarLoop]: Abstraction has 34044 states and 181257 transitions. [2020-10-16 11:26:54,031 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 11:26:54,031 INFO L276 IsEmpty]: Start isEmpty. Operand 34044 states and 181257 transitions. [2020-10-16 11:26:54,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-16 11:26:54,034 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:26:54,034 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:26:54,034 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2020-10-16 11:26:54,034 INFO L429 AbstractCegarLoop]: === Iteration 33 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:26:54,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:26:54,035 INFO L82 PathProgramCache]: Analyzing trace with hash -980805416, now seen corresponding path program 3 times [2020-10-16 11:26:54,035 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:26:54,035 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394562480] [2020-10-16 11:26:54,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:26:54,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:26:54,081 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-16 11:26:54,081 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394562480] [2020-10-16 11:26:54,081 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:26:54,082 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-16 11:26:54,082 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715610462] [2020-10-16 11:26:54,082 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 11:26:54,082 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:26:54,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 11:26:54,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-16 11:26:54,083 INFO L87 Difference]: Start difference. First operand 34044 states and 181257 transitions. Second operand 9 states. [2020-10-16 11:26:55,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:26:55,261 INFO L93 Difference]: Finished difference Result 118392 states and 539774 transitions. [2020-10-16 11:26:55,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 11:26:55,262 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-10-16 11:26:55,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:26:56,510 INFO L225 Difference]: With dead ends: 118392 [2020-10-16 11:26:56,510 INFO L226 Difference]: Without dead ends: 118362 [2020-10-16 11:26:56,510 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-16 11:26:57,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118362 states. [2020-10-16 11:26:58,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118362 to 33530. [2020-10-16 11:26:58,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33530 states. [2020-10-16 11:26:58,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33530 states to 33530 states and 178563 transitions. [2020-10-16 11:26:58,969 INFO L78 Accepts]: Start accepts. Automaton has 33530 states and 178563 transitions. Word has length 25 [2020-10-16 11:26:58,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:26:58,969 INFO L481 AbstractCegarLoop]: Abstraction has 33530 states and 178563 transitions. [2020-10-16 11:26:58,970 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 11:26:58,970 INFO L276 IsEmpty]: Start isEmpty. Operand 33530 states and 178563 transitions. [2020-10-16 11:26:58,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-16 11:26:58,973 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:26:58,973 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:26:58,973 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2020-10-16 11:26:58,973 INFO L429 AbstractCegarLoop]: === Iteration 34 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:26:58,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:26:58,973 INFO L82 PathProgramCache]: Analyzing trace with hash -979488288, now seen corresponding path program 6 times [2020-10-16 11:26:58,973 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:26:58,974 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65842289] [2020-10-16 11:26:58,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:26:58,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:26:59,028 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-16 11:26:59,029 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65842289] [2020-10-16 11:26:59,029 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:26:59,029 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-16 11:26:59,030 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607655493] [2020-10-16 11:26:59,030 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 11:26:59,030 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:26:59,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 11:26:59,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-16 11:26:59,031 INFO L87 Difference]: Start difference. First operand 33530 states and 178563 transitions. Second operand 9 states. [2020-10-16 11:27:00,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:27:00,480 INFO L93 Difference]: Finished difference Result 116966 states and 531912 transitions. [2020-10-16 11:27:00,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 11:27:00,481 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-10-16 11:27:00,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. Received shutdown request... [2020-10-16 11:27:00,810 INFO L225 Difference]: With dead ends: 116966 [2020-10-16 11:27:00,810 INFO L226 Difference]: Without dead ends: 116926 [2020-10-16 11:27:00,810 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-10-16 11:27:01,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116926 states. [2020-10-16 11:27:01,972 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2020-10-16 11:27:01,972 WARN L546 AbstractCegarLoop]: Verification canceled [2020-10-16 11:27:01,974 WARN L235 ceAbstractionStarter]: Timeout [2020-10-16 11:27:01,974 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 11:27:01 BasicIcfg [2020-10-16 11:27:01,974 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-16 11:27:01,976 INFO L168 Benchmark]: Toolchain (without parser) took 227806.00 ms. Allocated memory was 140.5 MB in the beginning and 3.2 GB in the end (delta: 3.0 GB). Free memory was 101.4 MB in the beginning and 1.3 GB in the end (delta: -1.2 GB). Peak memory consumption was 2.5 GB. Max. memory is 7.1 GB. [2020-10-16 11:27:01,976 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 140.5 MB. Free memory was 121.1 MB in the beginning and 120.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-10-16 11:27:01,976 INFO L168 Benchmark]: CACSL2BoogieTranslator took 702.37 ms. Allocated memory was 140.5 MB in the beginning and 202.9 MB in the end (delta: 62.4 MB). Free memory was 101.2 MB in the beginning and 159.6 MB in the end (delta: -58.4 MB). Peak memory consumption was 21.7 MB. Max. memory is 7.1 GB. [2020-10-16 11:27:01,976 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.98 ms. Allocated memory is still 202.9 MB. Free memory was 159.6 MB in the beginning and 157.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-10-16 11:27:01,977 INFO L168 Benchmark]: Boogie Preprocessor took 26.24 ms. Allocated memory is still 202.9 MB. Free memory was 157.6 MB in the beginning and 156.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-10-16 11:27:01,977 INFO L168 Benchmark]: RCFGBuilder took 468.33 ms. Allocated memory is still 202.9 MB. Free memory was 156.3 MB in the beginning and 136.4 MB in the end (delta: 19.8 MB). Peak memory consumption was 19.8 MB. Max. memory is 7.1 GB. [2020-10-16 11:27:01,977 INFO L168 Benchmark]: TraceAbstraction took 226554.67 ms. Allocated memory was 202.9 MB in the beginning and 3.2 GB in the end (delta: 3.0 GB). Free memory was 136.4 MB in the beginning and 1.3 GB in the end (delta: -1.2 GB). Peak memory consumption was 2.5 GB. Max. memory is 7.1 GB. [2020-10-16 11:27:01,979 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 140.5 MB. Free memory was 121.1 MB in the beginning and 120.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 702.37 ms. Allocated memory was 140.5 MB in the beginning and 202.9 MB in the end (delta: 62.4 MB). Free memory was 101.2 MB in the beginning and 159.6 MB in the end (delta: -58.4 MB). Peak memory consumption was 21.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 48.98 ms. Allocated memory is still 202.9 MB. Free memory was 159.6 MB in the beginning and 157.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 26.24 ms. Allocated memory is still 202.9 MB. Free memory was 157.6 MB in the beginning and 156.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 468.33 ms. Allocated memory is still 202.9 MB. Free memory was 156.3 MB in the beginning and 136.4 MB in the end (delta: 19.8 MB). Peak memory consumption was 19.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 226554.67 ms. Allocated memory was 202.9 MB in the beginning and 3.2 GB in the end (delta: 3.0 GB). Free memory was 136.4 MB in the beginning and 1.3 GB in the end (delta: -1.2 GB). Peak memory consumption was 2.5 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 484 VarBasedMoverChecksPositive, 4 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 4 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 3 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.1s, 55 PlacesBefore, 18 PlacesAfterwards, 51 TransitionsBefore, 12 TransitionsAfterwards, 692 CoEnabledTransitionPairs, 5 FixpointIterations, 13 TrivialSequentialCompositions, 27 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 5 ConcurrentYvCompositions, 2 ChoiceCompositions, 47 TotalNumberOfCompositions, 670 MoverChecksTotal - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 726 VarBasedMoverChecksPositive, 8 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 8 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 32 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.2s, 76 PlacesBefore, 31 PlacesAfterwards, 69 TransitionsBefore, 21 TransitionsAfterwards, 1108 CoEnabledTransitionPairs, 5 FixpointIterations, 25 TrivialSequentialCompositions, 27 ConcurrentSequentialCompositions, 2 TrivialYvCompositions, 5 ConcurrentYvCompositions, 3 ChoiceCompositions, 62 TotalNumberOfCompositions, 1240 MoverChecksTotal - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 945 VarBasedMoverChecksPositive, 18 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 18 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 39 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.4s, 97 PlacesBefore, 41 PlacesAfterwards, 87 TransitionsBefore, 27 TransitionsAfterwards, 1608 CoEnabledTransitionPairs, 5 FixpointIterations, 32 TrivialSequentialCompositions, 30 ConcurrentSequentialCompositions, 7 TrivialYvCompositions, 4 ConcurrentYvCompositions, 4 ChoiceCompositions, 77 TotalNumberOfCompositions, 2157 MoverChecksTotal - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 1337 VarBasedMoverChecksPositive, 21 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 21 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.1s, 76 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.7s, 118 PlacesBefore, 51 PlacesAfterwards, 105 TransitionsBefore, 33 TransitionsAfterwards, 2192 CoEnabledTransitionPairs, 5 FixpointIterations, 43 TrivialSequentialCompositions, 34 ConcurrentSequentialCompositions, 10 TrivialYvCompositions, 5 ConcurrentYvCompositions, 5 ChoiceCompositions, 97 TotalNumberOfCompositions, 2978 MoverChecksTotal - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 1675 VarBasedMoverChecksPositive, 29 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 29 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.1s, 63 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.9s, 139 PlacesBefore, 61 PlacesAfterwards, 123 TransitionsBefore, 39 TransitionsAfterwards, 2860 CoEnabledTransitionPairs, 5 FixpointIterations, 59 TrivialSequentialCompositions, 40 ConcurrentSequentialCompositions, 11 TrivialYvCompositions, 5 ConcurrentYvCompositions, 6 ChoiceCompositions, 121 TotalNumberOfCompositions, 4168 MoverChecksTotal - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 2181 VarBasedMoverChecksPositive, 36 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 36 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.1s, 113 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 2.1s, 160 PlacesBefore, 71 PlacesAfterwards, 141 TransitionsBefore, 45 TransitionsAfterwards, 3612 CoEnabledTransitionPairs, 5 FixpointIterations, 66 TrivialSequentialCompositions, 45 ConcurrentSequentialCompositions, 12 TrivialYvCompositions, 4 ConcurrentYvCompositions, 7 ChoiceCompositions, 134 TotalNumberOfCompositions, 5372 MoverChecksTotal - TimeoutResultAtElement [Line: 679]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 679). Cancelled while executing MinimizeSevpa. - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 49 locations, 1 error locations. Started 6 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 226.1s, OverallIterations: 109, TraceHistogramMax: 6, AutomataDifference: 74.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 12.0s, HoareTripleCheckerStatistics: 6537 SDtfs, 21291 SDslu, 21100 SDs, 0 SdLazy, 23066 SolverSat, 1890 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 17.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2860 GetRequests, 848 SyntacticMatches, 0 SemanticMatches, 2012 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12353 ImplicationChecksByTransitivity, 16.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=37062occurred in iteration=23, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 119.9s AutomataMinimizationTime, 104 MinimizatonAttempts, 2538388 StatesRemovedByMinimization, 96 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 5.0s InterpolantComputationTime, 3086 NumberOfCodeBlocks, 3054 NumberOfCodeBlocksAsserted, 176 NumberOfCheckSat, 2850 ConstructedInterpolants, 0 QuantifiedInterpolants, 178236 SizeOfPredicates, 236 NumberOfNonLiveVariables, 5167 ConjunctsInSsa, 324 ConjunctsInUnsatCore, 148 InterpolantComputations, 60 PerfectInterpolantSequences, 1078/1700 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