/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 0.1.25-60655ea [2020-09-15 00:22:24,432 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-15 00:22:24,436 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-15 00:22:24,462 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-09-15 00:22:24,481 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-15 00:22:24,482 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-15 00:22:24,483 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-15 00:22:24,486 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-15 00:22:24,487 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-15 00:22:24,488 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-15 00:22:24,491 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-15 00:22:24,498 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-15 00:22:24,502 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-15 00:22:24,503 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-15 00:22:24,505 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-15 00:22:24,506 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-15 00:22:24,511 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-15 00:22:24,538 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-15 00:22:24,539 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-15 00:22:24,542 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-15 00:22:24,543 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 [2020-09-15 00:22:24,591 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-15 00:22:24,592 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-15 00:22:24,593 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-15 00:22:24,594 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-15 00:22:24,594 INFO L138 SettingsManager]: * Use SBE=true [2020-09-15 00:22:24,594 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-15 00:22:24,594 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-15 00:22:24,595 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-15 00:22:24,595 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-15 00:22:24,596 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-15 00:22:24,597 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-15 00:22:24,597 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-15 00:22:24,597 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-15 00:22:24,597 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-15 00:22:24,598 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-15 00:22:24,598 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-15 00:22:24,598 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-15 00:22:24,598 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-15 00:22:24,598 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-15 00:22:24,599 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-15 00:22:24,599 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-15 00:22:24,599 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-15 00:22:24,599 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-15 00:22:24,599 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-15 00:22:24,600 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-15 00:22:24,600 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-15 00:22:24,600 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-15 00:22:24,600 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-15 00:22:24,600 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-15 00:22:24,601 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-09-15 00:22:25,051 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-15 00:22:25,074 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-15 00:22:25,080 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-15 00:22:25,082 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-15 00:22:25,082 INFO L275 PluginConnector]: CDTParser initialized [2020-09-15 00:22:25,084 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-lit/fkp2013-1.i [2020-09-15 00:22:25,163 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/53795b5ec/d6641e4a89e440e393f549c2b72e0c6f/FLAG49bd342c5 [2020-09-15 00:22:25,831 INFO L306 CDTParser]: Found 1 translation units. [2020-09-15 00:22:25,832 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/pthread-lit/fkp2013-1.i [2020-09-15 00:22:25,856 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/53795b5ec/d6641e4a89e440e393f549c2b72e0c6f/FLAG49bd342c5 [2020-09-15 00:22:26,004 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/53795b5ec/d6641e4a89e440e393f549c2b72e0c6f [2020-09-15 00:22:26,016 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-15 00:22:26,022 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-09-15 00:22:26,023 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-15 00:22:26,023 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-15 00:22:26,027 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-15 00:22:26,029 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.09 12:22:26" (1/1) ... [2020-09-15 00:22:26,032 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14a783f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 12:22:26, skipping insertion in model container [2020-09-15 00:22:26,033 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.09 12:22:26" (1/1) ... [2020-09-15 00:22:26,042 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-15 00:22:26,098 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-15 00:22:26,594 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-15 00:22:26,617 INFO L203 MainTranslator]: Completed pre-run [2020-09-15 00:22:26,704 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-15 00:22:26,813 INFO L208 MainTranslator]: Completed translation [2020-09-15 00:22:26,815 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 12:22:26 WrapperNode [2020-09-15 00:22:26,816 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-15 00:22:26,817 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-09-15 00:22:26,817 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-09-15 00:22:26,817 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-09-15 00:22:26,830 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 12:22:26" (1/1) ... [2020-09-15 00:22:26,876 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 12:22:26" (1/1) ... [2020-09-15 00:22:26,914 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-09-15 00:22:26,915 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-15 00:22:26,915 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-15 00:22:26,915 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-15 00:22:26,930 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 12:22:26" (1/1) ... [2020-09-15 00:22:26,931 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 12:22:26" (1/1) ... [2020-09-15 00:22:26,946 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 12:22:26" (1/1) ... [2020-09-15 00:22:26,947 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 12:22:26" (1/1) ... [2020-09-15 00:22:26,962 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 12:22:26" (1/1) ... [2020-09-15 00:22:26,974 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 12:22:26" (1/1) ... [2020-09-15 00:22:26,982 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 12:22:26" (1/1) ... [2020-09-15 00:22:26,991 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-15 00:22:26,992 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-15 00:22:26,992 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-15 00:22:26,992 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-15 00:22:26,996 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 12:22:26" (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 [2020-09-15 00:22:27,100 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2020-09-15 00:22:27,100 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2020-09-15 00:22:27,100 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2020-09-15 00:22:27,101 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2020-09-15 00:22:27,101 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-15 00:22:27,102 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-15 00:22:27,102 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-15 00:22:27,103 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-15 00:22:27,103 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-15 00:22:27,106 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-09-15 00:22:27,511 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-15 00:22:27,512 INFO L295 CfgBuilder]: Removed 7 assume(true) statements. [2020-09-15 00:22:27,517 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.09 12:22:27 BoogieIcfgContainer [2020-09-15 00:22:27,517 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-15 00:22:27,525 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-15 00:22:27,527 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-15 00:22:27,531 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-15 00:22:27,532 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.09 12:22:26" (1/3) ... [2020-09-15 00:22:27,533 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@148a57f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.09 12:22:27, skipping insertion in model container [2020-09-15 00:22:27,533 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 12:22:26" (2/3) ... [2020-09-15 00:22:27,533 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@148a57f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.09 12:22:27, skipping insertion in model container [2020-09-15 00:22:27,534 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.09 12:22:27" (3/3) ... [2020-09-15 00:22:27,537 INFO L109 eAbstractionObserver]: Analyzing ICFG fkp2013-1.i [2020-09-15 00:22:27,551 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-09-15 00:22:27,552 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-09-15 00:22:27,561 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-15 00:22:27,562 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-09-15 00:22:27,592 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:27,592 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:27,592 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:27,593 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:27,593 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:27,594 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:27,594 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:27,594 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:27,594 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:27,595 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:27,595 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:27,596 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:27,596 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:27,596 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:27,597 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:27,597 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:27,597 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:27,598 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:27,598 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:27,598 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:27,598 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:27,606 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:27,606 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:27,606 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:27,607 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:27,607 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:27,615 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:27,615 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:27,616 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:27,616 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:27,616 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:27,616 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:27,639 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-09-15 00:22:27,663 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-15 00:22:27,664 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-15 00:22:27,664 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-09-15 00:22:27,664 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-15 00:22:27,664 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-15 00:22:27,664 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-15 00:22:27,664 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-15 00:22:27,665 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-15 00:22:27,681 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 55 places, 51 transitions, 112 flow [2020-09-15 00:22:27,684 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 55 places, 51 transitions, 112 flow [2020-09-15 00:22:27,729 INFO L129 PetriNetUnfolder]: 3/61 cut-off events. [2020-09-15 00:22:27,729 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-15 00:22:27,736 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. [2020-09-15 00:22:27,738 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 55 places, 51 transitions, 112 flow [2020-09-15 00:22:27,760 INFO L129 PetriNetUnfolder]: 3/61 cut-off events. [2020-09-15 00:22:27,761 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-15 00:22:27,762 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. [2020-09-15 00:22:27,764 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 692 [2020-09-15 00:22:27,765 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-09-15 00:22:28,980 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 62 [2020-09-15 00:22:29,047 INFO L206 etLargeBlockEncoding]: Checked pairs total: 576 [2020-09-15 00:22:29,047 INFO L214 etLargeBlockEncoding]: Total number of compositions: 45 [2020-09-15 00:22:29,052 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 18 places, 12 transitions, 34 flow [2020-09-15 00:22:29,066 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 44 states. [2020-09-15 00:22:29,069 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2020-09-15 00:22:29,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-09-15 00:22:29,077 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:22:29,078 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-09-15 00:22:29,079 INFO L427 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-09-15 00:22:29,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:22:29,087 INFO L82 PathProgramCache]: Analyzing trace with hash 208056, now seen corresponding path program 1 times [2020-09-15 00:22:29,101 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:22:29,102 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317971720] [2020-09-15 00:22:29,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:22:29,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:22:29,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-15 00:22:29,330 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317971720] [2020-09-15 00:22:29,331 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:22:29,331 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-15 00:22:29,332 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938016871] [2020-09-15 00:22:29,338 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-15 00:22:29,338 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:22:29,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-15 00:22:29,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-15 00:22:29,355 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 3 states. [2020-09-15 00:22:29,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:22:29,394 INFO L93 Difference]: Finished difference Result 35 states and 59 transitions. [2020-09-15 00:22:29,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-15 00:22:29,396 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-09-15 00:22:29,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:22:29,411 INFO L225 Difference]: With dead ends: 35 [2020-09-15 00:22:29,411 INFO L226 Difference]: Without dead ends: 31 [2020-09-15 00:22:29,413 INFO L675 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 [2020-09-15 00:22:29,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-09-15 00:22:29,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-09-15 00:22:29,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-09-15 00:22:29,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 51 transitions. [2020-09-15 00:22:29,473 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 51 transitions. Word has length 3 [2020-09-15 00:22:29,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:22:29,474 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 51 transitions. [2020-09-15 00:22:29,474 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-15 00:22:29,474 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 51 transitions. [2020-09-15 00:22:29,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-09-15 00:22:29,475 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:22:29,475 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:22:29,475 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-15 00:22:29,476 INFO L427 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-09-15 00:22:29,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:22:29,476 INFO L82 PathProgramCache]: Analyzing trace with hash -1139052385, now seen corresponding path program 1 times [2020-09-15 00:22:29,476 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:22:29,477 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886037787] [2020-09-15 00:22:29,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:22:29,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:22:29,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-15 00:22:29,562 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886037787] [2020-09-15 00:22:29,562 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:22:29,562 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-15 00:22:29,562 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371502815] [2020-09-15 00:22:29,564 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-15 00:22:29,564 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:22:29,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-15 00:22:29,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-09-15 00:22:29,565 INFO L87 Difference]: Start difference. First operand 31 states and 51 transitions. Second operand 4 states. [2020-09-15 00:22:29,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:22:29,585 INFO L93 Difference]: Finished difference Result 26 states and 42 transitions. [2020-09-15 00:22:29,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-15 00:22:29,586 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-09-15 00:22:29,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:22:29,586 INFO L225 Difference]: With dead ends: 26 [2020-09-15 00:22:29,587 INFO L226 Difference]: Without dead ends: 24 [2020-09-15 00:22:29,588 INFO L675 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 [2020-09-15 00:22:29,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-09-15 00:22:29,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2020-09-15 00:22:29,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-09-15 00:22:29,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 39 transitions. [2020-09-15 00:22:29,592 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 39 transitions. Word has length 7 [2020-09-15 00:22:29,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:22:29,593 INFO L479 AbstractCegarLoop]: Abstraction has 24 states and 39 transitions. [2020-09-15 00:22:29,593 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-15 00:22:29,593 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 39 transitions. [2020-09-15 00:22:29,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-09-15 00:22:29,594 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:22:29,594 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2020-09-15 00:22:29,594 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-15 00:22:29,595 INFO L427 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-09-15 00:22:29,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:22:29,595 INFO L82 PathProgramCache]: Analyzing trace with hash -950894116, now seen corresponding path program 1 times [2020-09-15 00:22:29,595 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:22:29,596 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849967566] [2020-09-15 00:22:29,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:22:29,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-15 00:22:29,636 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-15 00:22:29,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-15 00:22:29,677 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-15 00:22:29,707 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-09-15 00:22:29,708 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-15 00:22:29,708 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-15 00:22:29,709 WARN L363 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2020-09-15 00:22:29,710 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2020-09-15 00:22:29,719 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:29,719 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:29,719 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:29,719 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:29,720 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:29,720 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:29,720 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:29,720 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:29,720 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:29,721 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:29,721 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:29,721 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:29,721 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:29,722 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:29,722 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:29,722 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:29,722 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:29,722 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:29,723 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:29,723 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:29,723 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:29,723 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:29,724 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:29,724 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:29,724 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:29,725 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:29,725 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:29,725 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:29,725 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:29,725 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:29,726 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:29,726 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:29,726 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:29,726 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:29,727 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:29,727 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:29,727 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:29,727 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:29,727 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:29,728 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:29,728 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:29,728 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:29,729 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:29,729 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:29,729 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:29,729 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:29,729 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:29,732 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:29,733 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:29,733 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:29,733 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:29,733 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:29,735 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:29,735 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:29,735 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:29,736 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:29,736 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:29,736 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:29,738 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:29,738 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:29,739 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:29,739 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:29,739 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:29,739 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:29,741 INFO L251 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-09-15 00:22:29,741 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-15 00:22:29,741 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-15 00:22:29,742 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-09-15 00:22:29,742 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-15 00:22:29,742 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-15 00:22:29,742 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-15 00:22:29,742 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-15 00:22:29,742 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-15 00:22:29,745 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 76 places, 69 transitions, 162 flow [2020-09-15 00:22:29,746 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 76 places, 69 transitions, 162 flow [2020-09-15 00:22:29,765 INFO L129 PetriNetUnfolder]: 4/83 cut-off events. [2020-09-15 00:22:29,765 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2020-09-15 00:22:29,770 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. [2020-09-15 00:22:29,772 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 76 places, 69 transitions, 162 flow [2020-09-15 00:22:29,789 INFO L129 PetriNetUnfolder]: 4/83 cut-off events. [2020-09-15 00:22:29,789 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2020-09-15 00:22:29,790 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. [2020-09-15 00:22:29,792 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1108 [2020-09-15 00:22:29,792 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-09-15 00:22:31,006 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 60 [2020-09-15 00:22:31,080 INFO L206 etLargeBlockEncoding]: Checked pairs total: 964 [2020-09-15 00:22:31,080 INFO L214 etLargeBlockEncoding]: Total number of compositions: 59 [2020-09-15 00:22:31,080 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 21 transitions, 66 flow [2020-09-15 00:22:31,097 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 224 states. [2020-09-15 00:22:31,097 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states. [2020-09-15 00:22:31,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-09-15 00:22:31,098 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:22:31,098 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-09-15 00:22:31,098 INFO L427 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:22:31,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:22:31,099 INFO L82 PathProgramCache]: Analyzing trace with hash 354555, now seen corresponding path program 1 times [2020-09-15 00:22:31,099 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:22:31,099 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938388437] [2020-09-15 00:22:31,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:22:31,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:22:31,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-15 00:22:31,145 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938388437] [2020-09-15 00:22:31,146 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:22:31,146 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-15 00:22:31,146 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738695939] [2020-09-15 00:22:31,147 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-15 00:22:31,147 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:22:31,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-15 00:22:31,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-15 00:22:31,148 INFO L87 Difference]: Start difference. First operand 224 states. Second operand 3 states. [2020-09-15 00:22:31,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:22:31,184 INFO L93 Difference]: Finished difference Result 185 states and 459 transitions. [2020-09-15 00:22:31,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-15 00:22:31,185 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-09-15 00:22:31,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:22:31,190 INFO L225 Difference]: With dead ends: 185 [2020-09-15 00:22:31,190 INFO L226 Difference]: Without dead ends: 171 [2020-09-15 00:22:31,191 INFO L675 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 [2020-09-15 00:22:31,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2020-09-15 00:22:31,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2020-09-15 00:22:31,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2020-09-15 00:22:31,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 418 transitions. [2020-09-15 00:22:31,218 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 418 transitions. Word has length 3 [2020-09-15 00:22:31,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:22:31,219 INFO L479 AbstractCegarLoop]: Abstraction has 171 states and 418 transitions. [2020-09-15 00:22:31,219 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-15 00:22:31,219 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 418 transitions. [2020-09-15 00:22:31,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-09-15 00:22:31,220 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:22:31,220 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:22:31,220 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-15 00:22:31,220 INFO L427 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:22:31,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:22:31,221 INFO L82 PathProgramCache]: Analyzing trace with hash -1106209149, now seen corresponding path program 1 times [2020-09-15 00:22:31,221 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:22:31,221 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265425941] [2020-09-15 00:22:31,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:22:31,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:22:31,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-15 00:22:31,313 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265425941] [2020-09-15 00:22:31,313 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:22:31,313 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-15 00:22:31,313 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640121402] [2020-09-15 00:22:31,314 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-15 00:22:31,314 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:22:31,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-15 00:22:31,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-15 00:22:31,315 INFO L87 Difference]: Start difference. First operand 171 states and 418 transitions. Second operand 5 states. [2020-09-15 00:22:31,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:22:31,390 INFO L93 Difference]: Finished difference Result 205 states and 460 transitions. [2020-09-15 00:22:31,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-15 00:22:31,391 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-09-15 00:22:31,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:22:31,394 INFO L225 Difference]: With dead ends: 205 [2020-09-15 00:22:31,394 INFO L226 Difference]: Without dead ends: 201 [2020-09-15 00:22:31,394 INFO L675 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 [2020-09-15 00:22:31,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2020-09-15 00:22:31,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 162. [2020-09-15 00:22:31,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-09-15 00:22:31,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 399 transitions. [2020-09-15 00:22:31,415 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 399 transitions. Word has length 9 [2020-09-15 00:22:31,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:22:31,415 INFO L479 AbstractCegarLoop]: Abstraction has 162 states and 399 transitions. [2020-09-15 00:22:31,416 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-15 00:22:31,416 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 399 transitions. [2020-09-15 00:22:31,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-15 00:22:31,417 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:22:31,417 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:22:31,417 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-15 00:22:31,417 INFO L427 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:22:31,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:22:31,418 INFO L82 PathProgramCache]: Analyzing trace with hash 583411714, now seen corresponding path program 1 times [2020-09-15 00:22:31,418 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:22:31,418 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517840399] [2020-09-15 00:22:31,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:22:31,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:22:31,501 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-15 00:22:31,501 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517840399] [2020-09-15 00:22:31,503 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:22:31,503 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-15 00:22:31,504 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132540117] [2020-09-15 00:22:31,504 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-15 00:22:31,504 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:22:31,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-15 00:22:31,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-15 00:22:31,505 INFO L87 Difference]: Start difference. First operand 162 states and 399 transitions. Second operand 5 states. [2020-09-15 00:22:31,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:22:31,584 INFO L93 Difference]: Finished difference Result 189 states and 423 transitions. [2020-09-15 00:22:31,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-15 00:22:31,585 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-09-15 00:22:31,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:22:31,588 INFO L225 Difference]: With dead ends: 189 [2020-09-15 00:22:31,590 INFO L226 Difference]: Without dead ends: 185 [2020-09-15 00:22:31,590 INFO L675 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 [2020-09-15 00:22:31,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2020-09-15 00:22:31,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 153. [2020-09-15 00:22:31,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2020-09-15 00:22:31,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 367 transitions. [2020-09-15 00:22:31,620 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 367 transitions. Word has length 13 [2020-09-15 00:22:31,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:22:31,622 INFO L479 AbstractCegarLoop]: Abstraction has 153 states and 367 transitions. [2020-09-15 00:22:31,622 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-15 00:22:31,622 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 367 transitions. [2020-09-15 00:22:31,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-09-15 00:22:31,623 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:22:31,623 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:22:31,624 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-15 00:22:31,624 INFO L427 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:22:31,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:22:31,624 INFO L82 PathProgramCache]: Analyzing trace with hash 903154619, now seen corresponding path program 1 times [2020-09-15 00:22:31,625 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:22:31,625 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524881520] [2020-09-15 00:22:31,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:22:31,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-15 00:22:31,642 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-15 00:22:31,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-15 00:22:31,656 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-15 00:22:31,663 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-09-15 00:22:31,663 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-15 00:22:31,663 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-15 00:22:31,664 WARN L363 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2020-09-15 00:22:31,665 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2020-09-15 00:22:31,675 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:31,675 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:31,675 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:31,675 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:31,676 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:31,676 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:31,676 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:31,676 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:31,676 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:31,677 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:31,677 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:31,677 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:31,677 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:31,677 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:31,677 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:31,678 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:31,678 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:31,678 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:31,689 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:31,689 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:31,689 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:31,689 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:31,690 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:31,690 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:31,690 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:31,690 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:31,690 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:31,691 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:31,691 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:31,691 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:31,691 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:31,692 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:31,692 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:31,692 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:31,692 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:31,692 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:31,692 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:31,693 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:31,693 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:31,693 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:31,693 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:31,693 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:31,694 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:31,694 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:31,694 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:31,694 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:31,694 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:31,694 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:31,695 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:31,695 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:31,695 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:31,695 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:31,696 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:31,696 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:31,696 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:31,696 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:31,696 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:31,696 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:31,697 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:31,697 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:31,697 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:31,697 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:31,697 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:31,698 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:31,698 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:31,698 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:31,698 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:31,699 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:31,700 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:31,700 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:31,700 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:31,700 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:31,701 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:31,702 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:31,702 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:31,702 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:31,702 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:31,702 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:31,704 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:31,704 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:31,704 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:31,704 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:31,704 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:31,705 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:31,706 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:31,706 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:31,706 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:31,706 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:31,706 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:31,707 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:31,708 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:31,708 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:31,708 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:31,708 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:31,708 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:31,709 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:31,710 INFO L251 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-09-15 00:22:31,710 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-15 00:22:31,710 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-15 00:22:31,710 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-09-15 00:22:31,710 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-15 00:22:31,711 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-15 00:22:31,711 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-15 00:22:31,711 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-15 00:22:31,711 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-15 00:22:31,713 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 97 places, 87 transitions, 216 flow [2020-09-15 00:22:31,713 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 97 places, 87 transitions, 216 flow [2020-09-15 00:22:31,730 INFO L129 PetriNetUnfolder]: 5/105 cut-off events. [2020-09-15 00:22:31,730 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2020-09-15 00:22:31,732 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. [2020-09-15 00:22:31,734 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 97 places, 87 transitions, 216 flow [2020-09-15 00:22:31,750 INFO L129 PetriNetUnfolder]: 5/105 cut-off events. [2020-09-15 00:22:31,750 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2020-09-15 00:22:31,751 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. [2020-09-15 00:22:31,754 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1608 [2020-09-15 00:22:31,755 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-09-15 00:22:33,302 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 56 [2020-09-15 00:22:33,501 INFO L206 etLargeBlockEncoding]: Checked pairs total: 1796 [2020-09-15 00:22:33,501 INFO L214 etLargeBlockEncoding]: Total number of compositions: 73 [2020-09-15 00:22:33,501 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 41 places, 27 transitions, 96 flow [2020-09-15 00:22:33,531 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 683 states. [2020-09-15 00:22:33,531 INFO L276 IsEmpty]: Start isEmpty. Operand 683 states. [2020-09-15 00:22:33,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-09-15 00:22:33,532 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:22:33,532 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-09-15 00:22:33,532 INFO L427 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:22:33,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:22:33,533 INFO L82 PathProgramCache]: Analyzing trace with hash 535749, now seen corresponding path program 1 times [2020-09-15 00:22:33,533 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:22:33,533 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948929942] [2020-09-15 00:22:33,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:22:33,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:22:33,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-15 00:22:33,578 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948929942] [2020-09-15 00:22:33,578 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:22:33,578 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-15 00:22:33,578 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459709110] [2020-09-15 00:22:33,579 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-15 00:22:33,579 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:22:33,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-15 00:22:33,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-15 00:22:33,579 INFO L87 Difference]: Start difference. First operand 683 states. Second operand 3 states. [2020-09-15 00:22:33,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:22:33,629 INFO L93 Difference]: Finished difference Result 600 states and 1886 transitions. [2020-09-15 00:22:33,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-15 00:22:33,632 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-09-15 00:22:33,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:22:33,638 INFO L225 Difference]: With dead ends: 600 [2020-09-15 00:22:33,639 INFO L226 Difference]: Without dead ends: 559 [2020-09-15 00:22:33,639 INFO L675 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 [2020-09-15 00:22:33,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 559 states. [2020-09-15 00:22:33,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 559 to 559. [2020-09-15 00:22:33,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 559 states. [2020-09-15 00:22:33,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 559 states to 559 states and 1737 transitions. [2020-09-15 00:22:33,696 INFO L78 Accepts]: Start accepts. Automaton has 559 states and 1737 transitions. Word has length 3 [2020-09-15 00:22:33,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:22:33,696 INFO L479 AbstractCegarLoop]: Abstraction has 559 states and 1737 transitions. [2020-09-15 00:22:33,696 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-15 00:22:33,697 INFO L276 IsEmpty]: Start isEmpty. Operand 559 states and 1737 transitions. [2020-09-15 00:22:33,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-09-15 00:22:33,697 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:22:33,697 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:22:33,698 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-15 00:22:33,698 INFO L427 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:22:33,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:22:33,698 INFO L82 PathProgramCache]: Analyzing trace with hash -404806880, now seen corresponding path program 1 times [2020-09-15 00:22:33,698 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:22:33,699 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565506860] [2020-09-15 00:22:33,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:22:33,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:22:33,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-15 00:22:33,747 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565506860] [2020-09-15 00:22:33,748 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:22:33,748 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-15 00:22:33,748 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418659591] [2020-09-15 00:22:33,748 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-15 00:22:33,749 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:22:33,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-15 00:22:33,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-15 00:22:33,749 INFO L87 Difference]: Start difference. First operand 559 states and 1737 transitions. Second operand 5 states. [2020-09-15 00:22:33,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:22:33,838 INFO L93 Difference]: Finished difference Result 817 states and 2317 transitions. [2020-09-15 00:22:33,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-15 00:22:33,840 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-09-15 00:22:33,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:22:33,849 INFO L225 Difference]: With dead ends: 817 [2020-09-15 00:22:33,850 INFO L226 Difference]: Without dead ends: 812 [2020-09-15 00:22:33,850 INFO L675 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 [2020-09-15 00:22:33,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 812 states. [2020-09-15 00:22:33,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 812 to 585. [2020-09-15 00:22:33,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 585 states. [2020-09-15 00:22:33,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 585 states to 585 states and 1832 transitions. [2020-09-15 00:22:33,881 INFO L78 Accepts]: Start accepts. Automaton has 585 states and 1832 transitions. Word has length 9 [2020-09-15 00:22:33,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:22:33,881 INFO L479 AbstractCegarLoop]: Abstraction has 585 states and 1832 transitions. [2020-09-15 00:22:33,881 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-15 00:22:33,881 INFO L276 IsEmpty]: Start isEmpty. Operand 585 states and 1832 transitions. [2020-09-15 00:22:33,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-15 00:22:33,888 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:22:33,888 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:22:33,888 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-15 00:22:33,888 INFO L427 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:22:33,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:22:33,889 INFO L82 PathProgramCache]: Analyzing trace with hash -669323978, now seen corresponding path program 1 times [2020-09-15 00:22:33,889 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:22:33,889 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288732387] [2020-09-15 00:22:33,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:22:33,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:22:33,957 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-15 00:22:33,958 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288732387] [2020-09-15 00:22:33,958 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:22:33,958 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-15 00:22:33,959 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614063470] [2020-09-15 00:22:33,959 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-15 00:22:33,959 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:22:33,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-15 00:22:33,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-15 00:22:33,960 INFO L87 Difference]: Start difference. First operand 585 states and 1832 transitions. Second operand 5 states. [2020-09-15 00:22:34,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:22:34,044 INFO L93 Difference]: Finished difference Result 843 states and 2406 transitions. [2020-09-15 00:22:34,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-15 00:22:34,045 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-09-15 00:22:34,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:22:34,051 INFO L225 Difference]: With dead ends: 843 [2020-09-15 00:22:34,051 INFO L226 Difference]: Without dead ends: 836 [2020-09-15 00:22:34,053 INFO L675 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 [2020-09-15 00:22:34,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 836 states. [2020-09-15 00:22:34,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 836 to 611. [2020-09-15 00:22:34,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 611 states. [2020-09-15 00:22:34,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 611 states to 611 states and 1906 transitions. [2020-09-15 00:22:34,081 INFO L78 Accepts]: Start accepts. Automaton has 611 states and 1906 transitions. Word has length 13 [2020-09-15 00:22:34,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:22:34,082 INFO L479 AbstractCegarLoop]: Abstraction has 611 states and 1906 transitions. [2020-09-15 00:22:34,082 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-15 00:22:34,082 INFO L276 IsEmpty]: Start isEmpty. Operand 611 states and 1906 transitions. [2020-09-15 00:22:34,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-15 00:22:34,084 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:22:34,084 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:22:34,085 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-15 00:22:34,087 INFO L427 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:22:34,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:22:34,087 INFO L82 PathProgramCache]: Analyzing trace with hash -56737855, now seen corresponding path program 1 times [2020-09-15 00:22:34,088 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:22:34,088 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140741797] [2020-09-15 00:22:34,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:22:34,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:22:34,156 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-15 00:22:34,156 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140741797] [2020-09-15 00:22:34,157 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1488022082] [2020-09-15 00:22:34,157 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 [2020-09-15 00:22:34,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:22:34,241 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 6 conjunts are in the unsatisfiable core [2020-09-15 00:22:34,243 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:22:34,291 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-15 00:22:34,291 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:22:34,292 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-09-15 00:22:34,292 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64941105] [2020-09-15 00:22:34,292 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-15 00:22:34,293 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:22:34,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-15 00:22:34,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-09-15 00:22:34,293 INFO L87 Difference]: Start difference. First operand 611 states and 1906 transitions. Second operand 9 states. [2020-09-15 00:22:34,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:22:34,483 INFO L93 Difference]: Finished difference Result 1059 states and 2818 transitions. [2020-09-15 00:22:34,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-15 00:22:34,483 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 15 [2020-09-15 00:22:34,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:22:34,490 INFO L225 Difference]: With dead ends: 1059 [2020-09-15 00:22:34,491 INFO L226 Difference]: Without dead ends: 1052 [2020-09-15 00:22:34,491 INFO L675 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 [2020-09-15 00:22:34,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1052 states. [2020-09-15 00:22:34,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1052 to 591. [2020-09-15 00:22:34,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 591 states. [2020-09-15 00:22:34,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 591 states to 591 states and 1840 transitions. [2020-09-15 00:22:34,520 INFO L78 Accepts]: Start accepts. Automaton has 591 states and 1840 transitions. Word has length 15 [2020-09-15 00:22:34,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:22:34,520 INFO L479 AbstractCegarLoop]: Abstraction has 591 states and 1840 transitions. [2020-09-15 00:22:34,520 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-15 00:22:34,520 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states and 1840 transitions. [2020-09-15 00:22:34,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-15 00:22:34,521 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:22:34,521 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:22:34,735 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2020-09-15 00:22:34,736 INFO L427 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:22:34,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:22:34,736 INFO L82 PathProgramCache]: Analyzing trace with hash 1024744543, now seen corresponding path program 2 times [2020-09-15 00:22:34,737 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:22:34,737 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566794869] [2020-09-15 00:22:34,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:22:34,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:22:34,805 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-15 00:22:34,806 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566794869] [2020-09-15 00:22:34,806 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:22:34,806 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-15 00:22:34,806 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252224795] [2020-09-15 00:22:34,807 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-15 00:22:34,807 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:22:34,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-15 00:22:34,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-15 00:22:34,808 INFO L87 Difference]: Start difference. First operand 591 states and 1840 transitions. Second operand 7 states. [2020-09-15 00:22:34,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:22:34,997 INFO L93 Difference]: Finished difference Result 1053 states and 2807 transitions. [2020-09-15 00:22:34,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-15 00:22:34,997 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-09-15 00:22:34,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:22:35,006 INFO L225 Difference]: With dead ends: 1053 [2020-09-15 00:22:35,006 INFO L226 Difference]: Without dead ends: 1045 [2020-09-15 00:22:35,007 INFO L675 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 [2020-09-15 00:22:35,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1045 states. [2020-09-15 00:22:35,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1045 to 536. [2020-09-15 00:22:35,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 536 states. [2020-09-15 00:22:35,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 536 states to 536 states and 1688 transitions. [2020-09-15 00:22:35,037 INFO L78 Accepts]: Start accepts. Automaton has 536 states and 1688 transitions. Word has length 15 [2020-09-15 00:22:35,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:22:35,038 INFO L479 AbstractCegarLoop]: Abstraction has 536 states and 1688 transitions. [2020-09-15 00:22:35,038 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-15 00:22:35,038 INFO L276 IsEmpty]: Start isEmpty. Operand 536 states and 1688 transitions. [2020-09-15 00:22:35,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-15 00:22:35,039 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:22:35,039 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:22:35,039 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-15 00:22:35,039 INFO L427 AbstractCegarLoop]: === Iteration 6 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:22:35,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:22:35,040 INFO L82 PathProgramCache]: Analyzing trace with hash 68174732, now seen corresponding path program 1 times [2020-09-15 00:22:35,040 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:22:35,040 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466788272] [2020-09-15 00:22:35,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:22:35,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:22:35,101 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-15 00:22:35,101 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466788272] [2020-09-15 00:22:35,102 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:22:35,102 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-15 00:22:35,102 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935196748] [2020-09-15 00:22:35,102 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-15 00:22:35,103 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:22:35,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-15 00:22:35,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-15 00:22:35,103 INFO L87 Difference]: Start difference. First operand 536 states and 1688 transitions. Second operand 5 states. [2020-09-15 00:22:35,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:22:35,180 INFO L93 Difference]: Finished difference Result 736 states and 2123 transitions. [2020-09-15 00:22:35,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-15 00:22:35,180 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-09-15 00:22:35,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:22:35,186 INFO L225 Difference]: With dead ends: 736 [2020-09-15 00:22:35,186 INFO L226 Difference]: Without dead ends: 728 [2020-09-15 00:22:35,186 INFO L675 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 [2020-09-15 00:22:35,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 728 states. [2020-09-15 00:22:35,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 728 to 549. [2020-09-15 00:22:35,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 549 states. [2020-09-15 00:22:35,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 549 states to 549 states and 1684 transitions. [2020-09-15 00:22:35,208 INFO L78 Accepts]: Start accepts. Automaton has 549 states and 1684 transitions. Word has length 17 [2020-09-15 00:22:35,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:22:35,208 INFO L479 AbstractCegarLoop]: Abstraction has 549 states and 1684 transitions. [2020-09-15 00:22:35,208 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-15 00:22:35,208 INFO L276 IsEmpty]: Start isEmpty. Operand 549 states and 1684 transitions. [2020-09-15 00:22:35,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-09-15 00:22:35,210 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:22:35,210 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:22:35,210 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-15 00:22:35,210 INFO L427 AbstractCegarLoop]: === Iteration 7 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 00:22:35,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:22:35,211 INFO L82 PathProgramCache]: Analyzing trace with hash 2109628021, now seen corresponding path program 1 times [2020-09-15 00:22:35,211 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:22:35,211 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427928548] [2020-09-15 00:22:35,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:22:35,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-15 00:22:35,234 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-15 00:22:35,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-15 00:22:35,251 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-15 00:22:35,263 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-09-15 00:22:35,263 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-15 00:22:35,263 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-09-15 00:22:35,264 WARN L363 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2020-09-15 00:22:35,265 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2020-09-15 00:22:35,280 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:35,280 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:35,281 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:35,281 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:35,281 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:35,282 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:35,282 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:35,282 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:35,282 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:35,283 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:35,283 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:35,283 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:35,283 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:35,284 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:35,284 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:35,284 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:35,284 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:35,284 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:35,284 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:35,285 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:35,285 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:35,285 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:35,285 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:35,285 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:35,285 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:35,286 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:35,286 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:35,286 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:35,286 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:35,286 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:35,286 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:35,287 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:35,287 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:35,287 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:35,287 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:35,287 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:35,287 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:35,288 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:35,288 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:35,288 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:35,288 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:35,288 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:35,288 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:35,289 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:35,289 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:35,289 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:35,289 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:35,289 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:35,290 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:35,290 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:35,290 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:35,290 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:35,290 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:35,290 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:35,291 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:35,291 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:35,291 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:35,291 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:35,291 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:35,291 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:35,292 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:35,292 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:35,292 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:35,292 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:35,292 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:35,292 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:35,293 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:35,293 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:35,293 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:35,293 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:35,293 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:35,293 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:35,294 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:35,294 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:35,294 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:35,294 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:35,294 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:35,294 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:35,295 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:35,295 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:35,295 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:35,295 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:35,295 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:35,295 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:35,296 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:35,296 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:35,296 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:35,296 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:35,296 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:35,298 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:35,298 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:35,298 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:35,299 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:35,299 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:35,300 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:35,300 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:35,300 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:35,301 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:35,301 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:35,302 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:35,303 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:35,303 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:35,303 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:35,303 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:35,305 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:35,305 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:35,305 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:35,306 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:35,306 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:35,306 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:35,307 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:35,307 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:35,307 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:35,308 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:35,308 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:35,308 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:35,309 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:35,309 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:35,310 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:35,310 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:35,310 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:35,310 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:35,312 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:35,313 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:35,313 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:35,313 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:35,313 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:35,313 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:35,316 INFO L251 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-09-15 00:22:35,316 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-15 00:22:35,316 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-15 00:22:35,316 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-09-15 00:22:35,316 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-15 00:22:35,316 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-15 00:22:35,317 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-15 00:22:35,317 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-15 00:22:35,317 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-15 00:22:35,319 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 118 places, 105 transitions, 274 flow [2020-09-15 00:22:35,319 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 118 places, 105 transitions, 274 flow [2020-09-15 00:22:35,356 INFO L129 PetriNetUnfolder]: 6/127 cut-off events. [2020-09-15 00:22:35,357 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2020-09-15 00:22:35,358 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. [2020-09-15 00:22:35,364 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 118 places, 105 transitions, 274 flow [2020-09-15 00:22:35,378 INFO L129 PetriNetUnfolder]: 6/127 cut-off events. [2020-09-15 00:22:35,378 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2020-09-15 00:22:35,380 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. [2020-09-15 00:22:35,383 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 2192 [2020-09-15 00:22:35,383 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-09-15 00:22:37,460 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 58 [2020-09-15 00:22:37,537 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2240 [2020-09-15 00:22:37,537 INFO L214 etLargeBlockEncoding]: Total number of compositions: 92 [2020-09-15 00:22:37,538 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 51 places, 33 transitions, 130 flow [2020-09-15 00:22:37,660 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 2060 states. [2020-09-15 00:22:37,660 INFO L276 IsEmpty]: Start isEmpty. Operand 2060 states. [2020-09-15 00:22:37,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-09-15 00:22:37,661 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:22:37,661 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-09-15 00:22:37,661 INFO L427 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-09-15 00:22:37,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:22:37,662 INFO L82 PathProgramCache]: Analyzing trace with hash 753552, now seen corresponding path program 1 times [2020-09-15 00:22:37,662 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:22:37,662 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848704785] [2020-09-15 00:22:37,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:22:37,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:22:37,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-15 00:22:37,701 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848704785] [2020-09-15 00:22:37,701 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:22:37,701 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-15 00:22:37,702 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297397583] [2020-09-15 00:22:37,702 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-15 00:22:37,702 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:22:37,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-15 00:22:37,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-15 00:22:37,703 INFO L87 Difference]: Start difference. First operand 2060 states. Second operand 3 states. [2020-09-15 00:22:37,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:22:37,750 INFO L93 Difference]: Finished difference Result 1889 states and 7217 transitions. [2020-09-15 00:22:37,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-15 00:22:37,750 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-09-15 00:22:37,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:22:37,767 INFO L225 Difference]: With dead ends: 1889 [2020-09-15 00:22:37,767 INFO L226 Difference]: Without dead ends: 1767 [2020-09-15 00:22:37,768 INFO L675 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 [2020-09-15 00:22:37,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1767 states. [2020-09-15 00:22:37,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1767 to 1767. [2020-09-15 00:22:37,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1767 states. [2020-09-15 00:22:37,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1767 states to 1767 states and 6690 transitions. [2020-09-15 00:22:37,856 INFO L78 Accepts]: Start accepts. Automaton has 1767 states and 6690 transitions. Word has length 3 [2020-09-15 00:22:37,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:22:37,857 INFO L479 AbstractCegarLoop]: Abstraction has 1767 states and 6690 transitions. [2020-09-15 00:22:37,857 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-15 00:22:37,857 INFO L276 IsEmpty]: Start isEmpty. Operand 1767 states and 6690 transitions. [2020-09-15 00:22:37,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-09-15 00:22:37,857 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:22:37,857 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:22:37,858 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-09-15 00:22:37,858 INFO L427 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-09-15 00:22:37,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:22:37,858 INFO L82 PathProgramCache]: Analyzing trace with hash -260829075, now seen corresponding path program 1 times [2020-09-15 00:22:37,859 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:22:37,859 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586790755] [2020-09-15 00:22:37,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:22:37,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:22:37,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-15 00:22:37,910 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586790755] [2020-09-15 00:22:37,910 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:22:37,910 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-15 00:22:37,910 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712439167] [2020-09-15 00:22:37,911 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-15 00:22:37,911 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:22:37,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-15 00:22:37,911 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-15 00:22:37,911 INFO L87 Difference]: Start difference. First operand 1767 states and 6690 transitions. Second operand 5 states. [2020-09-15 00:22:38,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:22:38,006 INFO L93 Difference]: Finished difference Result 2905 states and 10138 transitions. [2020-09-15 00:22:38,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-15 00:22:38,007 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-09-15 00:22:38,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:22:38,032 INFO L225 Difference]: With dead ends: 2905 [2020-09-15 00:22:38,032 INFO L226 Difference]: Without dead ends: 2899 [2020-09-15 00:22:38,033 INFO L675 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 [2020-09-15 00:22:38,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2899 states. [2020-09-15 00:22:38,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2899 to 1966. [2020-09-15 00:22:38,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1966 states. [2020-09-15 00:22:38,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1966 states to 1966 states and 7503 transitions. [2020-09-15 00:22:38,141 INFO L78 Accepts]: Start accepts. Automaton has 1966 states and 7503 transitions. Word has length 9 [2020-09-15 00:22:38,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:22:38,142 INFO L479 AbstractCegarLoop]: Abstraction has 1966 states and 7503 transitions. [2020-09-15 00:22:38,142 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-15 00:22:38,142 INFO L276 IsEmpty]: Start isEmpty. Operand 1966 states and 7503 transitions. [2020-09-15 00:22:38,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-15 00:22:38,142 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:22:38,143 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:22:38,143 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-09-15 00:22:38,143 INFO L427 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-09-15 00:22:38,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:22:38,143 INFO L82 PathProgramCache]: Analyzing trace with hash -1408743431, now seen corresponding path program 1 times [2020-09-15 00:22:38,144 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:22:38,144 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664658226] [2020-09-15 00:22:38,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:22:38,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:22:38,199 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-15 00:22:38,199 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664658226] [2020-09-15 00:22:38,200 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:22:38,200 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-15 00:22:38,200 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208638588] [2020-09-15 00:22:38,201 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-15 00:22:38,202 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:22:38,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-15 00:22:38,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-15 00:22:38,202 INFO L87 Difference]: Start difference. First operand 1966 states and 7503 transitions. Second operand 5 states. [2020-09-15 00:22:38,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:22:38,305 INFO L93 Difference]: Finished difference Result 3204 states and 11312 transitions. [2020-09-15 00:22:38,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-15 00:22:38,305 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-09-15 00:22:38,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:22:38,345 INFO L225 Difference]: With dead ends: 3204 [2020-09-15 00:22:38,345 INFO L226 Difference]: Without dead ends: 3194 [2020-09-15 00:22:38,346 INFO L675 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 [2020-09-15 00:22:38,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3194 states. [2020-09-15 00:22:38,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3194 to 2200. [2020-09-15 00:22:38,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2200 states. [2020-09-15 00:22:38,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2200 states to 2200 states and 8453 transitions. [2020-09-15 00:22:38,507 INFO L78 Accepts]: Start accepts. Automaton has 2200 states and 8453 transitions. Word has length 13 [2020-09-15 00:22:38,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:22:38,510 INFO L479 AbstractCegarLoop]: Abstraction has 2200 states and 8453 transitions. [2020-09-15 00:22:38,510 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-15 00:22:38,510 INFO L276 IsEmpty]: Start isEmpty. Operand 2200 states and 8453 transitions. [2020-09-15 00:22:38,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-15 00:22:38,511 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:22:38,511 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:22:38,511 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-09-15 00:22:38,512 INFO L427 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-09-15 00:22:38,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:22:38,512 INFO L82 PathProgramCache]: Analyzing trace with hash 1555768808, now seen corresponding path program 1 times [2020-09-15 00:22:38,512 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:22:38,513 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403830361] [2020-09-15 00:22:38,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:22:38,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:22:38,582 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-15 00:22:38,582 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403830361] [2020-09-15 00:22:38,582 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [696790680] [2020-09-15 00:22:38,582 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 [2020-09-15 00:22:38,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:22:38,650 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 6 conjunts are in the unsatisfiable core [2020-09-15 00:22:38,651 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:22:38,672 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-15 00:22:38,673 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:22:38,673 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-09-15 00:22:38,673 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599845312] [2020-09-15 00:22:38,674 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-15 00:22:38,674 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:22:38,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-15 00:22:38,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-09-15 00:22:38,675 INFO L87 Difference]: Start difference. First operand 2200 states and 8453 transitions. Second operand 9 states. [2020-09-15 00:22:38,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:22:38,922 INFO L93 Difference]: Finished difference Result 4556 states and 14911 transitions. [2020-09-15 00:22:38,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-15 00:22:38,923 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 15 [2020-09-15 00:22:38,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:22:38,955 INFO L225 Difference]: With dead ends: 4556 [2020-09-15 00:22:38,956 INFO L226 Difference]: Without dead ends: 4546 [2020-09-15 00:22:38,958 INFO L675 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 [2020-09-15 00:22:38,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4546 states. [2020-09-15 00:22:39,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4546 to 2157. [2020-09-15 00:22:39,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2157 states. [2020-09-15 00:22:39,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2157 states to 2157 states and 8278 transitions. [2020-09-15 00:22:39,082 INFO L78 Accepts]: Start accepts. Automaton has 2157 states and 8278 transitions. Word has length 15 [2020-09-15 00:22:39,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:22:39,082 INFO L479 AbstractCegarLoop]: Abstraction has 2157 states and 8278 transitions. [2020-09-15 00:22:39,082 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-15 00:22:39,082 INFO L276 IsEmpty]: Start isEmpty. Operand 2157 states and 8278 transitions. [2020-09-15 00:22:39,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-15 00:22:39,083 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:22:39,083 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:22:39,297 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-09-15 00:22:39,297 INFO L427 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-09-15 00:22:39,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:22:39,298 INFO L82 PathProgramCache]: Analyzing trace with hash -887756896, now seen corresponding path program 2 times [2020-09-15 00:22:39,299 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:22:39,299 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890293141] [2020-09-15 00:22:39,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:22:39,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:22:39,385 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-15 00:22:39,385 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890293141] [2020-09-15 00:22:39,385 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:22:39,387 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-15 00:22:39,387 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612144392] [2020-09-15 00:22:39,387 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-15 00:22:39,387 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:22:39,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-15 00:22:39,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-15 00:22:39,388 INFO L87 Difference]: Start difference. First operand 2157 states and 8278 transitions. Second operand 7 states. [2020-09-15 00:22:39,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:22:39,609 INFO L93 Difference]: Finished difference Result 4612 states and 15111 transitions. [2020-09-15 00:22:39,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-15 00:22:39,609 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-09-15 00:22:39,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:22:39,626 INFO L225 Difference]: With dead ends: 4612 [2020-09-15 00:22:39,626 INFO L226 Difference]: Without dead ends: 4601 [2020-09-15 00:22:39,627 INFO L675 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 [2020-09-15 00:22:39,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4601 states. [2020-09-15 00:22:39,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4601 to 2035. [2020-09-15 00:22:39,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2035 states. [2020-09-15 00:22:39,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2035 states to 2035 states and 7845 transitions. [2020-09-15 00:22:39,782 INFO L78 Accepts]: Start accepts. Automaton has 2035 states and 7845 transitions. Word has length 15 [2020-09-15 00:22:39,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:22:39,782 INFO L479 AbstractCegarLoop]: Abstraction has 2035 states and 7845 transitions. [2020-09-15 00:22:39,782 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-15 00:22:39,782 INFO L276 IsEmpty]: Start isEmpty. Operand 2035 states and 7845 transitions. [2020-09-15 00:22:39,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-15 00:22:39,783 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:22:39,783 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:22:39,784 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-09-15 00:22:39,784 INFO L427 AbstractCegarLoop]: === Iteration 6 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-09-15 00:22:39,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:22:39,784 INFO L82 PathProgramCache]: Analyzing trace with hash 695111130, now seen corresponding path program 1 times [2020-09-15 00:22:39,784 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:22:39,785 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879989865] [2020-09-15 00:22:39,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:22:39,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:22:39,856 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-15 00:22:39,856 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879989865] [2020-09-15 00:22:39,856 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:22:39,857 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-15 00:22:39,857 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355539753] [2020-09-15 00:22:39,857 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-15 00:22:39,857 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:22:39,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-15 00:22:39,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-15 00:22:39,858 INFO L87 Difference]: Start difference. First operand 2035 states and 7845 transitions. Second operand 5 states. [2020-09-15 00:22:39,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:22:39,952 INFO L93 Difference]: Finished difference Result 3265 states and 11681 transitions. [2020-09-15 00:22:39,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-15 00:22:39,953 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-09-15 00:22:39,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:22:39,967 INFO L225 Difference]: With dead ends: 3265 [2020-09-15 00:22:39,967 INFO L226 Difference]: Without dead ends: 3250 [2020-09-15 00:22:39,968 INFO L675 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 [2020-09-15 00:22:39,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3250 states. [2020-09-15 00:22:40,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3250 to 2281. [2020-09-15 00:22:40,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2281 states. [2020-09-15 00:22:40,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2281 states to 2281 states and 8755 transitions. [2020-09-15 00:22:40,068 INFO L78 Accepts]: Start accepts. Automaton has 2281 states and 8755 transitions. Word has length 17 [2020-09-15 00:22:40,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:22:40,069 INFO L479 AbstractCegarLoop]: Abstraction has 2281 states and 8755 transitions. [2020-09-15 00:22:40,069 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-15 00:22:40,070 INFO L276 IsEmpty]: Start isEmpty. Operand 2281 states and 8755 transitions. [2020-09-15 00:22:40,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-15 00:22:40,071 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:22:40,072 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:22:40,072 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-09-15 00:22:40,073 INFO L427 AbstractCegarLoop]: === Iteration 7 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-09-15 00:22:40,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:22:40,073 INFO L82 PathProgramCache]: Analyzing trace with hash 1754455113, now seen corresponding path program 1 times [2020-09-15 00:22:40,073 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:22:40,074 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620820399] [2020-09-15 00:22:40,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:22:40,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:22:40,170 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-15 00:22:40,171 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620820399] [2020-09-15 00:22:40,171 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [744849277] [2020-09-15 00:22:40,171 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 [2020-09-15 00:22:40,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:22:40,249 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 6 conjunts are in the unsatisfiable core [2020-09-15 00:22:40,250 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:22:40,273 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-15 00:22:40,273 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:22:40,274 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-09-15 00:22:40,274 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921121165] [2020-09-15 00:22:40,274 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-15 00:22:40,274 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:22:40,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-15 00:22:40,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-09-15 00:22:40,275 INFO L87 Difference]: Start difference. First operand 2281 states and 8755 transitions. Second operand 9 states. [2020-09-15 00:22:40,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:22:40,521 INFO L93 Difference]: Finished difference Result 4825 states and 15986 transitions. [2020-09-15 00:22:40,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-15 00:22:40,522 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 19 [2020-09-15 00:22:40,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:22:40,539 INFO L225 Difference]: With dead ends: 4825 [2020-09-15 00:22:40,539 INFO L226 Difference]: Without dead ends: 4813 [2020-09-15 00:22:40,540 INFO L675 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 [2020-09-15 00:22:40,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4813 states. [2020-09-15 00:22:40,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4813 to 2305. [2020-09-15 00:22:40,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2305 states. [2020-09-15 00:22:40,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2305 states to 2305 states and 8815 transitions. [2020-09-15 00:22:40,650 INFO L78 Accepts]: Start accepts. Automaton has 2305 states and 8815 transitions. Word has length 19 [2020-09-15 00:22:40,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:22:40,652 INFO L479 AbstractCegarLoop]: Abstraction has 2305 states and 8815 transitions. [2020-09-15 00:22:40,653 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-15 00:22:40,653 INFO L276 IsEmpty]: Start isEmpty. Operand 2305 states and 8815 transitions. [2020-09-15 00:22:40,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-15 00:22:40,657 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:22:40,657 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:22:40,871 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:22:40,871 INFO L427 AbstractCegarLoop]: === Iteration 8 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-09-15 00:22:40,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:22:40,872 INFO L82 PathProgramCache]: Analyzing trace with hash -131464925, now seen corresponding path program 1 times [2020-09-15 00:22:40,872 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:22:40,872 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296932372] [2020-09-15 00:22:40,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:22:40,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:22:40,946 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-15 00:22:40,947 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296932372] [2020-09-15 00:22:40,948 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2067579060] [2020-09-15 00:22:40,948 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 [2020-09-15 00:22:41,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:22:41,033 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 6 conjunts are in the unsatisfiable core [2020-09-15 00:22:41,035 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:22:41,134 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-15 00:22:41,135 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:22:41,137 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-09-15 00:22:41,137 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713935305] [2020-09-15 00:22:41,138 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-15 00:22:41,138 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:22:41,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-15 00:22:41,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-09-15 00:22:41,138 INFO L87 Difference]: Start difference. First operand 2305 states and 8815 transitions. Second operand 9 states. [2020-09-15 00:22:41,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:22:41,399 INFO L93 Difference]: Finished difference Result 4942 states and 16410 transitions. [2020-09-15 00:22:41,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-15 00:22:41,400 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 19 [2020-09-15 00:22:41,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:22:41,418 INFO L225 Difference]: With dead ends: 4942 [2020-09-15 00:22:41,418 INFO L226 Difference]: Without dead ends: 4925 [2020-09-15 00:22:41,418 INFO L675 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 [2020-09-15 00:22:41,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4925 states. [2020-09-15 00:22:41,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4925 to 2299. [2020-09-15 00:22:41,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2299 states. [2020-09-15 00:22:41,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2299 states to 2299 states and 8782 transitions. [2020-09-15 00:22:41,527 INFO L78 Accepts]: Start accepts. Automaton has 2299 states and 8782 transitions. Word has length 19 [2020-09-15 00:22:41,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:22:41,527 INFO L479 AbstractCegarLoop]: Abstraction has 2299 states and 8782 transitions. [2020-09-15 00:22:41,527 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-15 00:22:41,527 INFO L276 IsEmpty]: Start isEmpty. Operand 2299 states and 8782 transitions. [2020-09-15 00:22:41,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-15 00:22:41,529 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:22:41,529 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:22:41,743 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:22:41,743 INFO L427 AbstractCegarLoop]: === Iteration 9 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-09-15 00:22:41,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:22:41,744 INFO L82 PathProgramCache]: Analyzing trace with hash -2013120191, now seen corresponding path program 2 times [2020-09-15 00:22:41,744 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:22:41,744 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089165639] [2020-09-15 00:22:41,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:22:41,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:22:41,805 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-15 00:22:41,805 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089165639] [2020-09-15 00:22:41,805 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:22:41,806 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-15 00:22:41,806 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403763208] [2020-09-15 00:22:41,806 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-15 00:22:41,806 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:22:41,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-15 00:22:41,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-15 00:22:41,807 INFO L87 Difference]: Start difference. First operand 2299 states and 8782 transitions. Second operand 7 states. [2020-09-15 00:22:42,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:22:42,025 INFO L93 Difference]: Finished difference Result 4934 states and 16393 transitions. [2020-09-15 00:22:42,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-15 00:22:42,026 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-09-15 00:22:42,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:22:42,044 INFO L225 Difference]: With dead ends: 4934 [2020-09-15 00:22:42,044 INFO L226 Difference]: Without dead ends: 4917 [2020-09-15 00:22:42,044 INFO L675 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 [2020-09-15 00:22:42,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4917 states. [2020-09-15 00:22:42,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4917 to 2216. [2020-09-15 00:22:42,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2216 states. [2020-09-15 00:22:42,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2216 states to 2216 states and 8477 transitions. [2020-09-15 00:22:42,152 INFO L78 Accepts]: Start accepts. Automaton has 2216 states and 8477 transitions. Word has length 19 [2020-09-15 00:22:42,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:22:42,153 INFO L479 AbstractCegarLoop]: Abstraction has 2216 states and 8477 transitions. [2020-09-15 00:22:42,153 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-15 00:22:42,153 INFO L276 IsEmpty]: Start isEmpty. Operand 2216 states and 8477 transitions. [2020-09-15 00:22:42,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-15 00:22:42,154 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:22:42,155 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:22:42,155 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-09-15 00:22:42,155 INFO L427 AbstractCegarLoop]: === Iteration 10 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-09-15 00:22:42,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:22:42,155 INFO L82 PathProgramCache]: Analyzing trace with hash -2013113743, now seen corresponding path program 2 times [2020-09-15 00:22:42,156 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:22:42,156 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70912438] [2020-09-15 00:22:42,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:22:42,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:22:42,250 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-15 00:22:42,251 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70912438] [2020-09-15 00:22:42,251 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:22:42,251 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-15 00:22:42,251 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133808604] [2020-09-15 00:22:42,252 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-15 00:22:42,252 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:22:42,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-15 00:22:42,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-15 00:22:42,253 INFO L87 Difference]: Start difference. First operand 2216 states and 8477 transitions. Second operand 7 states. [2020-09-15 00:22:42,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:22:42,491 INFO L93 Difference]: Finished difference Result 4774 states and 15828 transitions. [2020-09-15 00:22:42,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-15 00:22:42,492 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-09-15 00:22:42,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:22:42,503 INFO L225 Difference]: With dead ends: 4774 [2020-09-15 00:22:42,503 INFO L226 Difference]: Without dead ends: 4757 [2020-09-15 00:22:42,504 INFO L675 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 [2020-09-15 00:22:42,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4757 states. [2020-09-15 00:22:42,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4757 to 2150. [2020-09-15 00:22:42,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2150 states. [2020-09-15 00:22:42,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2150 states to 2150 states and 8243 transitions. [2020-09-15 00:22:42,679 INFO L78 Accepts]: Start accepts. Automaton has 2150 states and 8243 transitions. Word has length 19 [2020-09-15 00:22:42,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:22:42,679 INFO L479 AbstractCegarLoop]: Abstraction has 2150 states and 8243 transitions. [2020-09-15 00:22:42,679 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-15 00:22:42,679 INFO L276 IsEmpty]: Start isEmpty. Operand 2150 states and 8243 transitions. [2020-09-15 00:22:42,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-15 00:22:42,681 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:22:42,681 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:22:42,682 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-09-15 00:22:42,682 INFO L427 AbstractCegarLoop]: === Iteration 11 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-09-15 00:22:42,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:22:42,682 INFO L82 PathProgramCache]: Analyzing trace with hash -9146414, now seen corresponding path program 1 times [2020-09-15 00:22:42,682 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:22:42,682 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687002729] [2020-09-15 00:22:42,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:22:42,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:22:42,764 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-15 00:22:42,764 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687002729] [2020-09-15 00:22:42,765 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1990023417] [2020-09-15 00:22:42,765 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 [2020-09-15 00:22:42,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:22:42,843 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 8 conjunts are in the unsatisfiable core [2020-09-15 00:22:42,845 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:22:42,879 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-15 00:22:42,879 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:22:42,879 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-09-15 00:22:42,880 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92077392] [2020-09-15 00:22:42,880 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-15 00:22:42,880 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:22:42,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-15 00:22:42,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-09-15 00:22:42,881 INFO L87 Difference]: Start difference. First operand 2150 states and 8243 transitions. Second operand 11 states. [2020-09-15 00:22:43,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:22:43,475 INFO L93 Difference]: Finished difference Result 6025 states and 18746 transitions. [2020-09-15 00:22:43,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:22:43,476 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 21 [2020-09-15 00:22:43,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:22:43,485 INFO L225 Difference]: With dead ends: 6025 [2020-09-15 00:22:43,485 INFO L226 Difference]: Without dead ends: 6017 [2020-09-15 00:22:43,486 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 256 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-09-15 00:22:43,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6017 states. [2020-09-15 00:22:43,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6017 to 2117. [2020-09-15 00:22:43,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2117 states. [2020-09-15 00:22:43,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2117 states to 2117 states and 8106 transitions. [2020-09-15 00:22:43,574 INFO L78 Accepts]: Start accepts. Automaton has 2117 states and 8106 transitions. Word has length 21 [2020-09-15 00:22:43,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:22:43,574 INFO L479 AbstractCegarLoop]: Abstraction has 2117 states and 8106 transitions. [2020-09-15 00:22:43,574 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-15 00:22:43,574 INFO L276 IsEmpty]: Start isEmpty. Operand 2117 states and 8106 transitions. [2020-09-15 00:22:43,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-15 00:22:43,576 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:22:43,576 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:22:43,790 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2020-09-15 00:22:43,791 INFO L427 AbstractCegarLoop]: === Iteration 12 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-09-15 00:22:43,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:22:43,791 INFO L82 PathProgramCache]: Analyzing trace with hash -1890795232, now seen corresponding path program 2 times [2020-09-15 00:22:43,792 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:22:43,792 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519356820] [2020-09-15 00:22:43,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:22:43,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:22:43,881 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-15 00:22:43,881 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519356820] [2020-09-15 00:22:43,882 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1063496038] [2020-09-15 00:22:43,882 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 [2020-09-15 00:22:43,977 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-09-15 00:22:43,977 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-15 00:22:43,978 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 8 conjunts are in the unsatisfiable core [2020-09-15 00:22:43,980 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:22:44,010 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-15 00:22:44,011 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:22:44,011 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-09-15 00:22:44,011 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119717681] [2020-09-15 00:22:44,012 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-15 00:22:44,012 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:22:44,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-15 00:22:44,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-09-15 00:22:44,012 INFO L87 Difference]: Start difference. First operand 2117 states and 8106 transitions. Second operand 11 states. [2020-09-15 00:22:44,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:22:44,692 INFO L93 Difference]: Finished difference Result 5914 states and 18384 transitions. [2020-09-15 00:22:44,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:22:44,692 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 21 [2020-09-15 00:22:44,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:22:44,702 INFO L225 Difference]: With dead ends: 5914 [2020-09-15 00:22:44,702 INFO L226 Difference]: Without dead ends: 5903 [2020-09-15 00:22:44,703 INFO L675 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 [2020-09-15 00:22:44,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5903 states. [2020-09-15 00:22:44,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5903 to 2085. [2020-09-15 00:22:44,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2085 states. [2020-09-15 00:22:44,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2085 states to 2085 states and 7975 transitions. [2020-09-15 00:22:44,797 INFO L78 Accepts]: Start accepts. Automaton has 2085 states and 7975 transitions. Word has length 21 [2020-09-15 00:22:44,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:22:44,798 INFO L479 AbstractCegarLoop]: Abstraction has 2085 states and 7975 transitions. [2020-09-15 00:22:44,798 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-15 00:22:44,798 INFO L276 IsEmpty]: Start isEmpty. Operand 2085 states and 7975 transitions. [2020-09-15 00:22:44,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-15 00:22:44,800 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:22:44,800 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:22:45,014 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:22:45,014 INFO L427 AbstractCegarLoop]: === Iteration 13 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-09-15 00:22:45,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:22:45,015 INFO L82 PathProgramCache]: Analyzing trace with hash 180724060, now seen corresponding path program 3 times [2020-09-15 00:22:45,015 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:22:45,016 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500282803] [2020-09-15 00:22:45,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:22:45,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:22:45,100 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-15 00:22:45,100 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500282803] [2020-09-15 00:22:45,100 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1302518459] [2020-09-15 00:22:45,100 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 [2020-09-15 00:22:45,170 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-09-15 00:22:45,170 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-15 00:22:45,171 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 8 conjunts are in the unsatisfiable core [2020-09-15 00:22:45,173 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:22:45,201 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-15 00:22:45,202 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:22:45,202 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-09-15 00:22:45,202 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560275829] [2020-09-15 00:22:45,202 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-15 00:22:45,203 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:22:45,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-15 00:22:45,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-09-15 00:22:45,203 INFO L87 Difference]: Start difference. First operand 2085 states and 7975 transitions. Second operand 11 states. [2020-09-15 00:22:45,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:22:45,797 INFO L93 Difference]: Finished difference Result 5907 states and 18375 transitions. [2020-09-15 00:22:45,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:22:45,798 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 21 [2020-09-15 00:22:45,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:22:45,808 INFO L225 Difference]: With dead ends: 5907 [2020-09-15 00:22:45,808 INFO L226 Difference]: Without dead ends: 5899 [2020-09-15 00:22:45,809 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 256 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-09-15 00:22:45,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5899 states. [2020-09-15 00:22:45,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5899 to 2008. [2020-09-15 00:22:45,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2008 states. [2020-09-15 00:22:45,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2008 states to 2008 states and 7698 transitions. [2020-09-15 00:22:45,902 INFO L78 Accepts]: Start accepts. Automaton has 2008 states and 7698 transitions. Word has length 21 [2020-09-15 00:22:45,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:22:45,902 INFO L479 AbstractCegarLoop]: Abstraction has 2008 states and 7698 transitions. [2020-09-15 00:22:45,902 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-15 00:22:45,902 INFO L276 IsEmpty]: Start isEmpty. Operand 2008 states and 7698 transitions. [2020-09-15 00:22:45,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-15 00:22:45,904 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:22:45,904 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:22:46,118 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2020-09-15 00:22:46,119 INFO L427 AbstractCegarLoop]: === Iteration 14 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-09-15 00:22:46,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:22:46,119 INFO L82 PathProgramCache]: Analyzing trace with hash -1783759286, now seen corresponding path program 4 times [2020-09-15 00:22:46,120 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:22:46,120 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73339697] [2020-09-15 00:22:46,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:22:46,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:22:46,209 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-15 00:22:46,210 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73339697] [2020-09-15 00:22:46,210 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1297471425] [2020-09-15 00:22:46,210 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 [2020-09-15 00:22:46,285 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-09-15 00:22:46,286 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-15 00:22:46,286 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 8 conjunts are in the unsatisfiable core [2020-09-15 00:22:46,289 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:22:46,322 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-15 00:22:46,322 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:22:46,322 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-09-15 00:22:46,323 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997839375] [2020-09-15 00:22:46,323 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-15 00:22:46,324 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:22:46,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-15 00:22:46,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-09-15 00:22:46,324 INFO L87 Difference]: Start difference. First operand 2008 states and 7698 transitions. Second operand 11 states. [2020-09-15 00:22:46,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:22:46,977 INFO L93 Difference]: Finished difference Result 5835 states and 18155 transitions. [2020-09-15 00:22:46,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:22:46,978 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 21 [2020-09-15 00:22:46,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:22:46,990 INFO L225 Difference]: With dead ends: 5835 [2020-09-15 00:22:46,991 INFO L226 Difference]: Without dead ends: 5824 [2020-09-15 00:22:46,991 INFO L675 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 [2020-09-15 00:22:47,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5824 states. [2020-09-15 00:22:47,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5824 to 1976. [2020-09-15 00:22:47,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1976 states. [2020-09-15 00:22:47,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1976 states to 1976 states and 7567 transitions. [2020-09-15 00:22:47,077 INFO L78 Accepts]: Start accepts. Automaton has 1976 states and 7567 transitions. Word has length 21 [2020-09-15 00:22:47,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:22:47,077 INFO L479 AbstractCegarLoop]: Abstraction has 1976 states and 7567 transitions. [2020-09-15 00:22:47,077 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-15 00:22:47,077 INFO L276 IsEmpty]: Start isEmpty. Operand 1976 states and 7567 transitions. [2020-09-15 00:22:47,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-15 00:22:47,079 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:22:47,079 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:22:47,292 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2020-09-15 00:22:47,293 INFO L427 AbstractCegarLoop]: === Iteration 15 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-09-15 00:22:47,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:22:47,293 INFO L82 PathProgramCache]: Analyzing trace with hash -964809789, now seen corresponding path program 1 times [2020-09-15 00:22:47,294 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:22:47,294 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724756284] [2020-09-15 00:22:47,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:22:47,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:22:47,346 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-15 00:22:47,347 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724756284] [2020-09-15 00:22:47,347 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:22:47,347 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-15 00:22:47,347 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093936026] [2020-09-15 00:22:47,347 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-15 00:22:47,348 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:22:47,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-15 00:22:47,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-15 00:22:47,348 INFO L87 Difference]: Start difference. First operand 1976 states and 7567 transitions. Second operand 5 states. [2020-09-15 00:22:47,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:22:47,428 INFO L93 Difference]: Finished difference Result 3016 states and 10840 transitions. [2020-09-15 00:22:47,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-15 00:22:47,429 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-09-15 00:22:47,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:22:47,437 INFO L225 Difference]: With dead ends: 3016 [2020-09-15 00:22:47,437 INFO L226 Difference]: Without dead ends: 3000 [2020-09-15 00:22:47,438 INFO L675 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 [2020-09-15 00:22:47,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3000 states. [2020-09-15 00:22:47,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3000 to 2183. [2020-09-15 00:22:47,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2183 states. [2020-09-15 00:22:47,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2183 states to 2183 states and 8210 transitions. [2020-09-15 00:22:47,507 INFO L78 Accepts]: Start accepts. Automaton has 2183 states and 8210 transitions. Word has length 21 [2020-09-15 00:22:47,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:22:47,508 INFO L479 AbstractCegarLoop]: Abstraction has 2183 states and 8210 transitions. [2020-09-15 00:22:47,508 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-15 00:22:47,508 INFO L276 IsEmpty]: Start isEmpty. Operand 2183 states and 8210 transitions. [2020-09-15 00:22:47,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-15 00:22:47,509 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:22:47,509 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:22:47,510 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-09-15 00:22:47,510 INFO L427 AbstractCegarLoop]: === Iteration 16 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-09-15 00:22:47,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:22:47,510 INFO L82 PathProgramCache]: Analyzing trace with hash -1873231848, now seen corresponding path program 5 times [2020-09-15 00:22:47,510 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:22:47,510 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96394189] [2020-09-15 00:22:47,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:22:47,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:22:47,588 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-15 00:22:47,589 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96394189] [2020-09-15 00:22:47,589 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:22:47,589 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-15 00:22:47,589 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716337490] [2020-09-15 00:22:47,589 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-15 00:22:47,590 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:22:47,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-15 00:22:47,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-15 00:22:47,590 INFO L87 Difference]: Start difference. First operand 2183 states and 8210 transitions. Second operand 9 states. [2020-09-15 00:22:48,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:22:48,177 INFO L93 Difference]: Finished difference Result 6150 states and 19247 transitions. [2020-09-15 00:22:48,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:22:48,178 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-09-15 00:22:48,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:22:48,189 INFO L225 Difference]: With dead ends: 6150 [2020-09-15 00:22:48,189 INFO L226 Difference]: Without dead ends: 6139 [2020-09-15 00:22:48,190 INFO L675 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 [2020-09-15 00:22:48,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6139 states. [2020-09-15 00:22:48,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6139 to 2096. [2020-09-15 00:22:48,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2096 states. [2020-09-15 00:22:48,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2096 states to 2096 states and 7876 transitions. [2020-09-15 00:22:48,284 INFO L78 Accepts]: Start accepts. Automaton has 2096 states and 7876 transitions. Word has length 21 [2020-09-15 00:22:48,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:22:48,285 INFO L479 AbstractCegarLoop]: Abstraction has 2096 states and 7876 transitions. [2020-09-15 00:22:48,285 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-15 00:22:48,285 INFO L276 IsEmpty]: Start isEmpty. Operand 2096 states and 7876 transitions. [2020-09-15 00:22:48,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-15 00:22:48,286 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:22:48,286 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:22:48,286 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-09-15 00:22:48,287 INFO L427 AbstractCegarLoop]: === Iteration 17 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-09-15 00:22:48,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:22:48,287 INFO L82 PathProgramCache]: Analyzing trace with hash -1867041768, now seen corresponding path program 6 times [2020-09-15 00:22:48,287 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:22:48,287 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912695902] [2020-09-15 00:22:48,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:22:48,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:22:48,379 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-15 00:22:48,379 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912695902] [2020-09-15 00:22:48,380 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:22:48,380 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-15 00:22:48,380 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284581554] [2020-09-15 00:22:48,380 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-15 00:22:48,381 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:22:48,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-15 00:22:48,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-15 00:22:48,381 INFO L87 Difference]: Start difference. First operand 2096 states and 7876 transitions. Second operand 9 states. [2020-09-15 00:22:49,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:22:49,070 INFO L93 Difference]: Finished difference Result 6017 states and 18791 transitions. [2020-09-15 00:22:49,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:22:49,071 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-09-15 00:22:49,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:22:49,080 INFO L225 Difference]: With dead ends: 6017 [2020-09-15 00:22:49,080 INFO L226 Difference]: Without dead ends: 6002 [2020-09-15 00:22:49,081 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-09-15 00:22:49,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6002 states. [2020-09-15 00:22:49,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6002 to 1965. [2020-09-15 00:22:49,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1965 states. [2020-09-15 00:22:49,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1965 states to 1965 states and 7429 transitions. [2020-09-15 00:22:49,172 INFO L78 Accepts]: Start accepts. Automaton has 1965 states and 7429 transitions. Word has length 21 [2020-09-15 00:22:49,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:22:49,172 INFO L479 AbstractCegarLoop]: Abstraction has 1965 states and 7429 transitions. [2020-09-15 00:22:49,172 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-15 00:22:49,172 INFO L276 IsEmpty]: Start isEmpty. Operand 1965 states and 7429 transitions. [2020-09-15 00:22:49,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-09-15 00:22:49,174 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:22:49,174 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:22:49,174 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-09-15 00:22:49,174 INFO L427 AbstractCegarLoop]: === Iteration 18 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-09-15 00:22:49,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:22:49,175 INFO L82 PathProgramCache]: Analyzing trace with hash 150840888, now seen corresponding path program 1 times [2020-09-15 00:22:49,175 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:22:49,175 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978910639] [2020-09-15 00:22:49,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:22:49,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-15 00:22:49,188 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-15 00:22:49,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-15 00:22:49,198 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-15 00:22:49,206 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-09-15 00:22:49,206 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-15 00:22:49,206 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-09-15 00:22:49,207 WARN L363 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2020-09-15 00:22:49,207 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2020-09-15 00:22:49,221 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:49,221 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:49,221 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:49,222 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:49,222 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:49,222 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:49,222 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:49,222 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:49,222 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:49,223 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:49,223 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:49,223 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:49,223 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:49,223 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:49,223 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:49,223 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:49,224 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:49,224 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:49,224 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:49,224 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:49,224 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:49,224 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:49,224 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:49,225 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:49,225 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:49,225 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:49,225 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:49,225 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:49,225 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:49,225 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:49,225 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:49,226 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:49,226 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:49,226 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:49,226 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:49,226 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:49,226 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:49,227 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:49,227 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:49,227 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:49,227 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:49,227 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:49,227 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:49,227 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:49,228 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:49,228 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:49,228 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:49,228 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:49,228 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:49,228 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:49,229 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:49,229 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:49,229 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:49,229 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:49,229 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:49,229 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:49,230 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:49,230 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:49,230 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:49,230 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:49,230 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:49,230 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:49,231 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:49,231 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:49,231 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:49,231 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:49,231 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:49,231 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:49,231 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:49,232 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:49,232 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:49,232 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:49,232 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:49,232 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:49,232 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:49,233 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:49,233 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:49,233 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:49,233 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:49,233 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:49,233 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:49,233 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:49,234 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:49,234 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:49,234 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:49,234 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:49,234 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:49,234 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:49,234 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:49,235 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:49,235 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:49,235 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:49,235 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:49,235 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:49,235 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:49,236 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:49,236 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:49,236 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:49,236 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:49,236 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:49,236 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:49,236 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:49,237 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:49,237 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:49,237 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:49,237 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:49,237 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:49,238 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:49,238 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:49,238 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:49,239 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:49,239 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:49,239 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:49,239 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:49,240 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:49,241 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:49,241 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:49,241 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:49,241 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:49,241 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:49,242 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:49,242 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:49,242 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:49,243 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:49,243 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:49,244 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:49,244 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:49,244 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:49,244 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:49,244 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:49,245 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:49,245 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:49,246 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:49,246 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:49,246 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:49,246 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:49,247 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:49,247 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:49,247 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:49,247 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:49,248 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:49,248 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:49,249 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:49,249 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:49,249 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:49,249 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:49,249 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:49,249 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:49,250 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:49,251 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:49,251 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:49,251 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:49,251 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:49,251 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:49,252 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:49,252 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:49,252 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:49,253 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:49,253 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:49,253 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:22:49,254 INFO L251 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2020-09-15 00:22:49,254 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-15 00:22:49,254 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-15 00:22:49,255 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-09-15 00:22:49,255 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-15 00:22:49,255 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-15 00:22:49,255 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-15 00:22:49,255 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-15 00:22:49,255 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-15 00:22:49,257 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 139 places, 123 transitions, 336 flow [2020-09-15 00:22:49,257 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 139 places, 123 transitions, 336 flow [2020-09-15 00:22:49,273 INFO L129 PetriNetUnfolder]: 7/149 cut-off events. [2020-09-15 00:22:49,274 INFO L130 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2020-09-15 00:22:49,275 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. [2020-09-15 00:22:49,279 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 139 places, 123 transitions, 336 flow [2020-09-15 00:22:49,296 INFO L129 PetriNetUnfolder]: 7/149 cut-off events. [2020-09-15 00:22:49,296 INFO L130 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2020-09-15 00:22:49,297 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. [2020-09-15 00:22:49,302 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 2860 [2020-09-15 00:22:49,302 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-09-15 00:22:51,277 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 60 [2020-09-15 00:22:51,354 INFO L206 etLargeBlockEncoding]: Checked pairs total: 3096 [2020-09-15 00:22:51,355 INFO L214 etLargeBlockEncoding]: Total number of compositions: 115 [2020-09-15 00:22:51,355 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 61 places, 39 transitions, 168 flow [2020-09-15 00:22:51,600 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 6191 states. [2020-09-15 00:22:51,600 INFO L276 IsEmpty]: Start isEmpty. Operand 6191 states. [2020-09-15 00:22:51,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-09-15 00:22:51,601 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:22:51,601 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-09-15 00:22:51,601 INFO L427 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]=== [2020-09-15 00:22:51,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:22:51,601 INFO L82 PathProgramCache]: Analyzing trace with hash 1011964, now seen corresponding path program 1 times [2020-09-15 00:22:51,601 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:22:51,601 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124481928] [2020-09-15 00:22:51,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:22:51,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:22:51,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-15 00:22:51,624 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124481928] [2020-09-15 00:22:51,625 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:22:51,625 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-15 00:22:51,625 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827607269] [2020-09-15 00:22:51,625 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-15 00:22:51,625 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:22:51,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-15 00:22:51,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-15 00:22:51,626 INFO L87 Difference]: Start difference. First operand 6191 states. Second operand 3 states. [2020-09-15 00:22:51,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:22:51,697 INFO L93 Difference]: Finished difference Result 5844 states and 26316 transitions. [2020-09-15 00:22:51,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-15 00:22:51,697 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-09-15 00:22:51,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:22:51,716 INFO L225 Difference]: With dead ends: 5844 [2020-09-15 00:22:51,716 INFO L226 Difference]: Without dead ends: 5479 [2020-09-15 00:22:51,718 INFO L675 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 [2020-09-15 00:22:51,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5479 states. [2020-09-15 00:22:51,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5479 to 5479. [2020-09-15 00:22:51,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5479 states. [2020-09-15 00:22:51,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5479 states to 5479 states and 24493 transitions. [2020-09-15 00:22:51,883 INFO L78 Accepts]: Start accepts. Automaton has 5479 states and 24493 transitions. Word has length 3 [2020-09-15 00:22:51,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:22:51,883 INFO L479 AbstractCegarLoop]: Abstraction has 5479 states and 24493 transitions. [2020-09-15 00:22:51,883 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-15 00:22:51,883 INFO L276 IsEmpty]: Start isEmpty. Operand 5479 states and 24493 transitions. [2020-09-15 00:22:51,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-09-15 00:22:51,884 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:22:51,884 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:22:51,884 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-09-15 00:22:51,884 INFO L427 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]=== [2020-09-15 00:22:51,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:22:51,884 INFO L82 PathProgramCache]: Analyzing trace with hash 1084774388, now seen corresponding path program 1 times [2020-09-15 00:22:51,885 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:22:51,885 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291087400] [2020-09-15 00:22:51,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:22:51,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:22:51,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-15 00:22:51,933 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291087400] [2020-09-15 00:22:51,934 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:22:51,934 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-15 00:22:51,934 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601924332] [2020-09-15 00:22:51,934 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-15 00:22:51,934 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:22:51,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-15 00:22:51,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-15 00:22:51,935 INFO L87 Difference]: Start difference. First operand 5479 states and 24493 transitions. Second operand 5 states. [2020-09-15 00:22:52,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:22:52,072 INFO L93 Difference]: Finished difference Result 9673 states and 40333 transitions. [2020-09-15 00:22:52,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-15 00:22:52,073 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-09-15 00:22:52,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:22:52,116 INFO L225 Difference]: With dead ends: 9673 [2020-09-15 00:22:52,117 INFO L226 Difference]: Without dead ends: 9666 [2020-09-15 00:22:52,117 INFO L675 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 [2020-09-15 00:22:52,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9666 states. [2020-09-15 00:22:52,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9666 to 6331. [2020-09-15 00:22:52,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6331 states. [2020-09-15 00:22:53,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6331 states to 6331 states and 28544 transitions. [2020-09-15 00:22:53,233 INFO L78 Accepts]: Start accepts. Automaton has 6331 states and 28544 transitions. Word has length 9 [2020-09-15 00:22:53,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:22:53,233 INFO L479 AbstractCegarLoop]: Abstraction has 6331 states and 28544 transitions. [2020-09-15 00:22:53,233 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-15 00:22:53,233 INFO L276 IsEmpty]: Start isEmpty. Operand 6331 states and 28544 transitions. [2020-09-15 00:22:53,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-15 00:22:53,234 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:22:53,234 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:22:53,234 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-09-15 00:22:53,234 INFO L427 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]=== [2020-09-15 00:22:53,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:22:53,235 INFO L82 PathProgramCache]: Analyzing trace with hash 2112403116, now seen corresponding path program 1 times [2020-09-15 00:22:53,235 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:22:53,235 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559343201] [2020-09-15 00:22:53,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:22:53,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:22:53,275 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-15 00:22:53,276 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559343201] [2020-09-15 00:22:53,276 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:22:53,276 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-15 00:22:53,276 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907703585] [2020-09-15 00:22:53,276 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-15 00:22:53,277 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:22:53,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-15 00:22:53,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-15 00:22:53,277 INFO L87 Difference]: Start difference. First operand 6331 states and 28544 transitions. Second operand 5 states. [2020-09-15 00:22:53,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:22:53,416 INFO L93 Difference]: Finished difference Result 11081 states and 46826 transitions. [2020-09-15 00:22:53,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-15 00:22:53,416 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-09-15 00:22:53,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:22:53,453 INFO L225 Difference]: With dead ends: 11081 [2020-09-15 00:22:53,453 INFO L226 Difference]: Without dead ends: 11068 [2020-09-15 00:22:53,454 INFO L675 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 [2020-09-15 00:22:53,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11068 states. [2020-09-15 00:22:53,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11068 to 7391. [2020-09-15 00:22:53,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7391 states. [2020-09-15 00:22:53,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7391 states to 7391 states and 33694 transitions. [2020-09-15 00:22:53,683 INFO L78 Accepts]: Start accepts. Automaton has 7391 states and 33694 transitions. Word has length 13 [2020-09-15 00:22:53,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:22:53,683 INFO L479 AbstractCegarLoop]: Abstraction has 7391 states and 33694 transitions. [2020-09-15 00:22:53,683 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-15 00:22:53,683 INFO L276 IsEmpty]: Start isEmpty. Operand 7391 states and 33694 transitions. [2020-09-15 00:22:53,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-15 00:22:53,684 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:22:53,684 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:22:53,684 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-09-15 00:22:53,684 INFO L427 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]=== [2020-09-15 00:22:53,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:22:53,685 INFO L82 PathProgramCache]: Analyzing trace with hash -28983895, now seen corresponding path program 1 times [2020-09-15 00:22:53,685 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:22:53,685 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946147353] [2020-09-15 00:22:53,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:22:53,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:22:53,738 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-15 00:22:53,738 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946147353] [2020-09-15 00:22:53,738 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1519736349] [2020-09-15 00:22:53,739 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 [2020-09-15 00:22:53,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:22:53,832 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 6 conjunts are in the unsatisfiable core [2020-09-15 00:22:53,832 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:22:53,854 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-15 00:22:53,855 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:22:53,855 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-09-15 00:22:53,855 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77753965] [2020-09-15 00:22:53,855 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-15 00:22:53,856 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:22:53,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-15 00:22:53,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-09-15 00:22:53,856 INFO L87 Difference]: Start difference. First operand 7391 states and 33694 transitions. Second operand 9 states. [2020-09-15 00:22:54,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:22:54,197 INFO L93 Difference]: Finished difference Result 16749 states and 66010 transitions. [2020-09-15 00:22:54,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-15 00:22:54,197 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 15 [2020-09-15 00:22:54,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:22:54,235 INFO L225 Difference]: With dead ends: 16749 [2020-09-15 00:22:54,236 INFO L226 Difference]: Without dead ends: 16736 [2020-09-15 00:22:54,236 INFO L675 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 [2020-09-15 00:22:54,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16736 states. [2020-09-15 00:22:54,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16736 to 7303. [2020-09-15 00:22:54,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7303 states. [2020-09-15 00:22:54,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7303 states to 7303 states and 33260 transitions. [2020-09-15 00:22:54,648 INFO L78 Accepts]: Start accepts. Automaton has 7303 states and 33260 transitions. Word has length 15 [2020-09-15 00:22:54,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:22:54,649 INFO L479 AbstractCegarLoop]: Abstraction has 7303 states and 33260 transitions. [2020-09-15 00:22:54,649 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-15 00:22:54,649 INFO L276 IsEmpty]: Start isEmpty. Operand 7303 states and 33260 transitions. [2020-09-15 00:22:54,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-15 00:22:54,649 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:22:54,650 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:22:54,863 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:22:54,863 INFO L427 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]=== [2020-09-15 00:22:54,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:22:54,864 INFO L82 PathProgramCache]: Analyzing trace with hash -1500121559, now seen corresponding path program 2 times [2020-09-15 00:22:54,864 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:22:54,864 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459601074] [2020-09-15 00:22:54,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:22:54,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:22:54,918 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-15 00:22:54,918 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459601074] [2020-09-15 00:22:54,918 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:22:54,918 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-15 00:22:54,919 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842658745] [2020-09-15 00:22:54,919 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-15 00:22:54,919 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:22:54,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-15 00:22:54,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-15 00:22:54,920 INFO L87 Difference]: Start difference. First operand 7303 states and 33260 transitions. Second operand 7 states. [2020-09-15 00:22:55,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:22:55,202 INFO L93 Difference]: Finished difference Result 17085 states and 67393 transitions. [2020-09-15 00:22:55,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-15 00:22:55,203 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-09-15 00:22:55,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:22:55,240 INFO L225 Difference]: With dead ends: 17085 [2020-09-15 00:22:55,240 INFO L226 Difference]: Without dead ends: 17071 [2020-09-15 00:22:55,240 INFO L675 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 [2020-09-15 00:22:55,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17071 states. [2020-09-15 00:22:55,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17071 to 7048. [2020-09-15 00:22:55,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7048 states. [2020-09-15 00:22:55,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7048 states to 7048 states and 32136 transitions. [2020-09-15 00:22:55,508 INFO L78 Accepts]: Start accepts. Automaton has 7048 states and 32136 transitions. Word has length 15 [2020-09-15 00:22:55,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:22:55,509 INFO L479 AbstractCegarLoop]: Abstraction has 7048 states and 32136 transitions. [2020-09-15 00:22:55,509 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-15 00:22:55,509 INFO L276 IsEmpty]: Start isEmpty. Operand 7048 states and 32136 transitions. [2020-09-15 00:22:55,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-15 00:22:55,509 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:22:55,509 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:22:55,509 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-09-15 00:22:55,510 INFO L427 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]=== [2020-09-15 00:22:55,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:22:55,510 INFO L82 PathProgramCache]: Analyzing trace with hash -1891696605, now seen corresponding path program 1 times [2020-09-15 00:22:55,510 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:22:55,510 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85459495] [2020-09-15 00:22:55,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:22:55,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:22:55,560 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-15 00:22:55,561 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85459495] [2020-09-15 00:22:55,561 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:22:55,561 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-15 00:22:55,561 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843869986] [2020-09-15 00:22:55,562 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-15 00:22:55,562 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:22:55,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-15 00:22:55,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-15 00:22:55,562 INFO L87 Difference]: Start difference. First operand 7048 states and 32136 transitions. Second operand 5 states. [2020-09-15 00:22:55,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:22:55,704 INFO L93 Difference]: Finished difference Result 12234 states and 52488 transitions. [2020-09-15 00:22:55,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-15 00:22:55,705 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-09-15 00:22:55,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:22:55,744 INFO L225 Difference]: With dead ends: 12234 [2020-09-15 00:22:55,744 INFO L226 Difference]: Without dead ends: 12212 [2020-09-15 00:22:55,745 INFO L675 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 [2020-09-15 00:22:55,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12212 states. [2020-09-15 00:22:55,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12212 to 8342. [2020-09-15 00:22:55,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8342 states. [2020-09-15 00:22:56,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8342 states to 8342 states and 38278 transitions. [2020-09-15 00:22:56,003 INFO L78 Accepts]: Start accepts. Automaton has 8342 states and 38278 transitions. Word has length 17 [2020-09-15 00:22:56,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:22:56,003 INFO L479 AbstractCegarLoop]: Abstraction has 8342 states and 38278 transitions. [2020-09-15 00:22:56,003 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-15 00:22:56,003 INFO L276 IsEmpty]: Start isEmpty. Operand 8342 states and 38278 transitions. [2020-09-15 00:22:56,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-15 00:22:56,004 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:22:56,004 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:22:56,005 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-09-15 00:22:56,005 INFO L427 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]=== [2020-09-15 00:22:56,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:22:56,005 INFO L82 PathProgramCache]: Analyzing trace with hash -74039136, now seen corresponding path program 1 times [2020-09-15 00:22:56,005 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:22:56,006 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741997751] [2020-09-15 00:22:56,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:22:56,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:22:56,186 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-15 00:22:56,186 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741997751] [2020-09-15 00:22:56,186 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [43769461] [2020-09-15 00:22:56,187 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 [2020-09-15 00:22:56,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:22:56,286 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 6 conjunts are in the unsatisfiable core [2020-09-15 00:22:56,287 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:22:56,312 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-15 00:22:56,312 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:22:56,313 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-09-15 00:22:56,313 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965067004] [2020-09-15 00:22:56,313 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-15 00:22:56,313 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:22:56,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-15 00:22:56,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-09-15 00:22:56,314 INFO L87 Difference]: Start difference. First operand 8342 states and 38278 transitions. Second operand 9 states. [2020-09-15 00:22:56,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:22:56,648 INFO L93 Difference]: Finished difference Result 19016 states and 76191 transitions. [2020-09-15 00:22:56,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-15 00:22:56,653 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 19 [2020-09-15 00:22:56,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:22:56,696 INFO L225 Difference]: With dead ends: 19016 [2020-09-15 00:22:56,696 INFO L226 Difference]: Without dead ends: 18998 [2020-09-15 00:22:56,697 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=89, Invalid=183, Unknown=0, NotChecked=0, Total=272 [2020-09-15 00:22:56,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18998 states. [2020-09-15 00:22:56,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18998 to 8452. [2020-09-15 00:22:56,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8452 states. [2020-09-15 00:22:57,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8452 states to 8452 states and 38704 transitions. [2020-09-15 00:22:57,006 INFO L78 Accepts]: Start accepts. Automaton has 8452 states and 38704 transitions. Word has length 19 [2020-09-15 00:22:57,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:22:57,007 INFO L479 AbstractCegarLoop]: Abstraction has 8452 states and 38704 transitions. [2020-09-15 00:22:57,007 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-15 00:22:57,007 INFO L276 IsEmpty]: Start isEmpty. Operand 8452 states and 38704 transitions. [2020-09-15 00:22:57,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-15 00:22:57,007 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:22:57,008 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:22:57,208 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2020-09-15 00:22:57,209 INFO L427 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]=== [2020-09-15 00:22:57,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:22:57,209 INFO L82 PathProgramCache]: Analyzing trace with hash -274460668, now seen corresponding path program 1 times [2020-09-15 00:22:57,210 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:22:57,210 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056254680] [2020-09-15 00:22:57,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:22:57,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:22:57,270 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-15 00:22:57,271 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056254680] [2020-09-15 00:22:57,271 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1446735432] [2020-09-15 00:22:57,271 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 [2020-09-15 00:22:57,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:22:57,358 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 6 conjunts are in the unsatisfiable core [2020-09-15 00:22:57,359 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:22:57,401 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-15 00:22:57,402 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:22:57,402 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-09-15 00:22:57,403 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851093857] [2020-09-15 00:22:57,403 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-15 00:22:57,403 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:22:57,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-15 00:22:57,404 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-09-15 00:22:57,404 INFO L87 Difference]: Start difference. First operand 8452 states and 38704 transitions. Second operand 9 states. [2020-09-15 00:22:57,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:22:57,853 INFO L93 Difference]: Finished difference Result 19670 states and 79028 transitions. [2020-09-15 00:22:57,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-15 00:22:57,854 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 19 [2020-09-15 00:22:57,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:22:57,941 INFO L225 Difference]: With dead ends: 19670 [2020-09-15 00:22:57,942 INFO L226 Difference]: Without dead ends: 19645 [2020-09-15 00:22:57,942 INFO L675 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 [2020-09-15 00:22:58,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19645 states. [2020-09-15 00:22:58,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19645 to 8480. [2020-09-15 00:22:58,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8480 states. [2020-09-15 00:22:58,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8480 states to 8480 states and 38825 transitions. [2020-09-15 00:22:58,632 INFO L78 Accepts]: Start accepts. Automaton has 8480 states and 38825 transitions. Word has length 19 [2020-09-15 00:22:58,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:22:58,632 INFO L479 AbstractCegarLoop]: Abstraction has 8480 states and 38825 transitions. [2020-09-15 00:22:58,633 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-15 00:22:58,633 INFO L276 IsEmpty]: Start isEmpty. Operand 8480 states and 38825 transitions. [2020-09-15 00:22:58,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-15 00:22:58,633 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:22:58,634 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:22:58,834 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2020-09-15 00:22:58,835 INFO L427 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]=== [2020-09-15 00:22:58,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:22:58,836 INFO L82 PathProgramCache]: Analyzing trace with hash -1149256224, now seen corresponding path program 2 times [2020-09-15 00:22:58,836 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:22:58,836 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478545439] [2020-09-15 00:22:58,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:22:58,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:22:58,904 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-15 00:22:58,904 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478545439] [2020-09-15 00:22:58,905 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:22:58,905 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-15 00:22:58,905 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562708068] [2020-09-15 00:22:58,905 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-15 00:22:58,905 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:22:58,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-15 00:22:58,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-15 00:22:58,906 INFO L87 Difference]: Start difference. First operand 8480 states and 38825 transitions. Second operand 7 states. [2020-09-15 00:22:59,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:22:59,319 INFO L93 Difference]: Finished difference Result 19852 states and 79846 transitions. [2020-09-15 00:22:59,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-15 00:22:59,320 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-09-15 00:22:59,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:22:59,386 INFO L225 Difference]: With dead ends: 19852 [2020-09-15 00:22:59,386 INFO L226 Difference]: Without dead ends: 19827 [2020-09-15 00:22:59,388 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-09-15 00:22:59,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19827 states. [2020-09-15 00:22:59,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19827 to 8379. [2020-09-15 00:22:59,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8379 states. [2020-09-15 00:22:59,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8379 states to 8379 states and 38406 transitions. [2020-09-15 00:22:59,781 INFO L78 Accepts]: Start accepts. Automaton has 8379 states and 38406 transitions. Word has length 19 [2020-09-15 00:22:59,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:22:59,781 INFO L479 AbstractCegarLoop]: Abstraction has 8379 states and 38406 transitions. [2020-09-15 00:22:59,782 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-15 00:22:59,782 INFO L276 IsEmpty]: Start isEmpty. Operand 8379 states and 38406 transitions. [2020-09-15 00:22:59,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-15 00:22:59,783 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:22:59,783 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:22:59,783 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-09-15 00:22:59,783 INFO L427 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]=== [2020-09-15 00:22:59,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:22:59,784 INFO L82 PathProgramCache]: Analyzing trace with hash -1149271290, now seen corresponding path program 2 times [2020-09-15 00:22:59,784 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:22:59,784 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772539972] [2020-09-15 00:22:59,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:22:59,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:22:59,843 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-15 00:22:59,843 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772539972] [2020-09-15 00:22:59,844 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:22:59,844 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-15 00:22:59,844 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747169607] [2020-09-15 00:22:59,844 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-15 00:22:59,844 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:22:59,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-15 00:22:59,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-15 00:22:59,845 INFO L87 Difference]: Start difference. First operand 8379 states and 38406 transitions. Second operand 7 states. [2020-09-15 00:23:00,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:23:00,136 INFO L93 Difference]: Finished difference Result 19555 states and 78564 transitions. [2020-09-15 00:23:00,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-15 00:23:00,140 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-09-15 00:23:00,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:23:00,199 INFO L225 Difference]: With dead ends: 19555 [2020-09-15 00:23:00,199 INFO L226 Difference]: Without dead ends: 19530 [2020-09-15 00:23:00,200 INFO L675 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 [2020-09-15 00:23:00,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19530 states. [2020-09-15 00:23:00,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19530 to 8317. [2020-09-15 00:23:00,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8317 states. [2020-09-15 00:23:00,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8317 states to 8317 states and 38184 transitions. [2020-09-15 00:23:00,535 INFO L78 Accepts]: Start accepts. Automaton has 8317 states and 38184 transitions. Word has length 19 [2020-09-15 00:23:00,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:23:00,535 INFO L479 AbstractCegarLoop]: Abstraction has 8317 states and 38184 transitions. [2020-09-15 00:23:00,535 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-15 00:23:00,535 INFO L276 IsEmpty]: Start isEmpty. Operand 8317 states and 38184 transitions. [2020-09-15 00:23:00,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-15 00:23:00,536 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:23:00,537 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:23:00,537 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-09-15 00:23:00,537 INFO L427 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]=== [2020-09-15 00:23:00,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:23:00,537 INFO L82 PathProgramCache]: Analyzing trace with hash -1557322431, now seen corresponding path program 1 times [2020-09-15 00:23:00,538 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:23:00,538 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661797097] [2020-09-15 00:23:00,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:23:00,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:23:00,744 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-15 00:23:00,744 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661797097] [2020-09-15 00:23:00,744 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1342128029] [2020-09-15 00:23:00,744 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 [2020-09-15 00:23:00,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:23:00,831 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 8 conjunts are in the unsatisfiable core [2020-09-15 00:23:00,832 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:23:00,858 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-15 00:23:00,859 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:23:00,859 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-09-15 00:23:00,860 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747307047] [2020-09-15 00:23:00,860 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-15 00:23:00,860 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:23:00,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-15 00:23:00,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-09-15 00:23:00,861 INFO L87 Difference]: Start difference. First operand 8317 states and 38184 transitions. Second operand 11 states. [2020-09-15 00:23:01,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:23:01,683 INFO L93 Difference]: Finished difference Result 26969 states and 101544 transitions. [2020-09-15 00:23:01,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:23:01,684 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 21 [2020-09-15 00:23:01,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:23:01,743 INFO L225 Difference]: With dead ends: 26969 [2020-09-15 00:23:01,743 INFO L226 Difference]: Without dead ends: 26957 [2020-09-15 00:23:01,744 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 256 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-09-15 00:23:01,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26957 states. [2020-09-15 00:23:02,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26957 to 8204. [2020-09-15 00:23:02,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8204 states. [2020-09-15 00:23:02,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8204 states to 8204 states and 37628 transitions. [2020-09-15 00:23:02,129 INFO L78 Accepts]: Start accepts. Automaton has 8204 states and 37628 transitions. Word has length 21 [2020-09-15 00:23:02,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:23:02,129 INFO L479 AbstractCegarLoop]: Abstraction has 8204 states and 37628 transitions. [2020-09-15 00:23:02,129 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-15 00:23:02,129 INFO L276 IsEmpty]: Start isEmpty. Operand 8204 states and 37628 transitions. [2020-09-15 00:23:02,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-15 00:23:02,130 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:23:02,130 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:23:02,331 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,13 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:23:02,331 INFO L427 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]=== [2020-09-15 00:23:02,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:23:02,332 INFO L82 PathProgramCache]: Analyzing trace with hash 1862834243, now seen corresponding path program 2 times [2020-09-15 00:23:02,332 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:23:02,333 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700089211] [2020-09-15 00:23:02,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:23:02,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:23:02,406 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-15 00:23:02,406 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700089211] [2020-09-15 00:23:02,406 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [515291140] [2020-09-15 00:23:02,406 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 [2020-09-15 00:23:02,488 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-09-15 00:23:02,489 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-15 00:23:02,489 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 8 conjunts are in the unsatisfiable core [2020-09-15 00:23:02,491 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:23:02,517 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-15 00:23:02,517 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:23:02,518 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-09-15 00:23:02,523 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600381865] [2020-09-15 00:23:02,523 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-15 00:23:02,523 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:23:02,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-15 00:23:02,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-09-15 00:23:02,524 INFO L87 Difference]: Start difference. First operand 8204 states and 37628 transitions. Second operand 11 states. [2020-09-15 00:23:03,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:23:03,361 INFO L93 Difference]: Finished difference Result 26661 states and 100277 transitions. [2020-09-15 00:23:03,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:23:03,362 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 21 [2020-09-15 00:23:03,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:23:03,424 INFO L225 Difference]: With dead ends: 26661 [2020-09-15 00:23:03,425 INFO L226 Difference]: Without dead ends: 26645 [2020-09-15 00:23:03,425 INFO L675 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 [2020-09-15 00:23:03,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26645 states. [2020-09-15 00:23:03,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26645 to 8091. [2020-09-15 00:23:03,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8091 states. [2020-09-15 00:23:03,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8091 states to 8091 states and 37076 transitions. [2020-09-15 00:23:03,927 INFO L78 Accepts]: Start accepts. Automaton has 8091 states and 37076 transitions. Word has length 21 [2020-09-15 00:23:03,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:23:03,927 INFO L479 AbstractCegarLoop]: Abstraction has 8091 states and 37076 transitions. [2020-09-15 00:23:03,927 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-15 00:23:03,927 INFO L276 IsEmpty]: Start isEmpty. Operand 8091 states and 37076 transitions. [2020-09-15 00:23:03,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-15 00:23:03,929 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:23:03,929 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:23:04,129 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2020-09-15 00:23:04,130 INFO L427 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]=== [2020-09-15 00:23:04,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:23:04,130 INFO L82 PathProgramCache]: Analyzing trace with hash -1769991039, now seen corresponding path program 3 times [2020-09-15 00:23:04,131 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:23:04,131 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897669450] [2020-09-15 00:23:04,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:23:04,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:23:04,214 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-15 00:23:04,214 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897669450] [2020-09-15 00:23:04,214 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [46070977] [2020-09-15 00:23:04,215 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 [2020-09-15 00:23:04,299 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-09-15 00:23:04,300 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-15 00:23:04,300 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 8 conjunts are in the unsatisfiable core [2020-09-15 00:23:04,314 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:23:04,339 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-15 00:23:04,339 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:23:04,340 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-09-15 00:23:04,340 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604423909] [2020-09-15 00:23:04,340 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-15 00:23:04,340 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:23:04,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-15 00:23:04,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-09-15 00:23:04,341 INFO L87 Difference]: Start difference. First operand 8091 states and 37076 transitions. Second operand 11 states. [2020-09-15 00:23:05,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:23:05,067 INFO L93 Difference]: Finished difference Result 26686 states and 100402 transitions. [2020-09-15 00:23:05,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:23:05,067 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 21 [2020-09-15 00:23:05,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:23:05,132 INFO L225 Difference]: With dead ends: 26686 [2020-09-15 00:23:05,132 INFO L226 Difference]: Without dead ends: 26674 [2020-09-15 00:23:05,133 INFO L675 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 [2020-09-15 00:23:05,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26674 states. [2020-09-15 00:23:05,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26674 to 7861. [2020-09-15 00:23:05,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7861 states. [2020-09-15 00:23:05,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7861 states to 7861 states and 36066 transitions. [2020-09-15 00:23:05,499 INFO L78 Accepts]: Start accepts. Automaton has 7861 states and 36066 transitions. Word has length 21 [2020-09-15 00:23:05,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:23:05,499 INFO L479 AbstractCegarLoop]: Abstraction has 7861 states and 36066 transitions. [2020-09-15 00:23:05,500 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-15 00:23:05,500 INFO L276 IsEmpty]: Start isEmpty. Operand 7861 states and 36066 transitions. [2020-09-15 00:23:05,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-15 00:23:05,500 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:23:05,501 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:23:05,701 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:23:05,702 INFO L427 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]=== [2020-09-15 00:23:05,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:23:05,702 INFO L82 PathProgramCache]: Analyzing trace with hash -1763681919, now seen corresponding path program 4 times [2020-09-15 00:23:05,703 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:23:05,703 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087012797] [2020-09-15 00:23:05,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:23:05,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:23:05,790 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-15 00:23:05,791 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087012797] [2020-09-15 00:23:05,791 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1251862851] [2020-09-15 00:23:05,791 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 [2020-09-15 00:23:05,896 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-09-15 00:23:05,897 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-15 00:23:05,898 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 8 conjunts are in the unsatisfiable core [2020-09-15 00:23:05,899 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:23:05,929 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-15 00:23:05,929 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:23:05,930 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-09-15 00:23:05,930 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130910787] [2020-09-15 00:23:05,930 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-15 00:23:05,930 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:23:05,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-15 00:23:05,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-09-15 00:23:05,931 INFO L87 Difference]: Start difference. First operand 7861 states and 36066 transitions. Second operand 11 states. [2020-09-15 00:23:06,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:23:06,840 INFO L93 Difference]: Finished difference Result 26489 states and 99650 transitions. [2020-09-15 00:23:06,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:23:06,841 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 21 [2020-09-15 00:23:06,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:23:06,906 INFO L225 Difference]: With dead ends: 26489 [2020-09-15 00:23:06,906 INFO L226 Difference]: Without dead ends: 26473 [2020-09-15 00:23:06,907 INFO L675 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 [2020-09-15 00:23:07,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26473 states. [2020-09-15 00:23:07,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26473 to 7748. [2020-09-15 00:23:07,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7748 states. [2020-09-15 00:23:07,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7748 states to 7748 states and 35514 transitions. [2020-09-15 00:23:07,275 INFO L78 Accepts]: Start accepts. Automaton has 7748 states and 35514 transitions. Word has length 21 [2020-09-15 00:23:07,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:23:07,276 INFO L479 AbstractCegarLoop]: Abstraction has 7748 states and 35514 transitions. [2020-09-15 00:23:07,276 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-15 00:23:07,276 INFO L276 IsEmpty]: Start isEmpty. Operand 7748 states and 35514 transitions. [2020-09-15 00:23:07,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-15 00:23:07,277 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:23:07,277 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:23:07,477 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2020-09-15 00:23:07,478 INFO L427 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]=== [2020-09-15 00:23:07,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:23:07,479 INFO L82 PathProgramCache]: Analyzing trace with hash 1774143127, now seen corresponding path program 1 times [2020-09-15 00:23:07,479 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:23:07,480 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276675950] [2020-09-15 00:23:07,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:23:07,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:23:07,526 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-15 00:23:07,527 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276675950] [2020-09-15 00:23:07,527 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:23:07,527 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-15 00:23:07,527 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782715783] [2020-09-15 00:23:07,528 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-15 00:23:07,528 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:23:07,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-15 00:23:07,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-15 00:23:07,528 INFO L87 Difference]: Start difference. First operand 7748 states and 35514 transitions. Second operand 5 states. [2020-09-15 00:23:07,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:23:07,672 INFO L93 Difference]: Finished difference Result 13251 states and 57501 transitions. [2020-09-15 00:23:07,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-15 00:23:07,672 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-09-15 00:23:07,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:23:07,702 INFO L225 Difference]: With dead ends: 13251 [2020-09-15 00:23:07,702 INFO L226 Difference]: Without dead ends: 13220 [2020-09-15 00:23:07,703 INFO L675 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 [2020-09-15 00:23:07,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13220 states. [2020-09-15 00:23:07,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13220 to 9255. [2020-09-15 00:23:07,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9255 states. [2020-09-15 00:23:07,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9255 states to 9255 states and 42368 transitions. [2020-09-15 00:23:07,968 INFO L78 Accepts]: Start accepts. Automaton has 9255 states and 42368 transitions. Word has length 21 [2020-09-15 00:23:07,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:23:07,969 INFO L479 AbstractCegarLoop]: Abstraction has 9255 states and 42368 transitions. [2020-09-15 00:23:07,969 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-15 00:23:07,969 INFO L276 IsEmpty]: Start isEmpty. Operand 9255 states and 42368 transitions. [2020-09-15 00:23:07,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-15 00:23:07,971 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:23:07,971 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:23:07,971 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2020-09-15 00:23:07,971 INFO L427 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]=== [2020-09-15 00:23:07,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:23:07,971 INFO L82 PathProgramCache]: Analyzing trace with hash -628636285, now seen corresponding path program 5 times [2020-09-15 00:23:07,972 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:23:07,972 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809346912] [2020-09-15 00:23:07,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:23:07,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:23:08,050 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-15 00:23:08,051 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809346912] [2020-09-15 00:23:08,051 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:23:08,051 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-15 00:23:08,051 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547514897] [2020-09-15 00:23:08,051 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-15 00:23:08,051 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:23:08,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-15 00:23:08,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-15 00:23:08,052 INFO L87 Difference]: Start difference. First operand 9255 states and 42368 transitions. Second operand 9 states. [2020-09-15 00:23:08,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:23:08,789 INFO L93 Difference]: Finished difference Result 29788 states and 113841 transitions. [2020-09-15 00:23:08,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:23:08,789 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-09-15 00:23:08,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:23:08,853 INFO L225 Difference]: With dead ends: 29788 [2020-09-15 00:23:08,853 INFO L226 Difference]: Without dead ends: 29770 [2020-09-15 00:23:08,853 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-09-15 00:23:08,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29770 states. [2020-09-15 00:23:09,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29770 to 8964. [2020-09-15 00:23:09,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8964 states. [2020-09-15 00:23:09,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8964 states to 8964 states and 41031 transitions. [2020-09-15 00:23:09,433 INFO L78 Accepts]: Start accepts. Automaton has 8964 states and 41031 transitions. Word has length 21 [2020-09-15 00:23:09,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:23:09,434 INFO L479 AbstractCegarLoop]: Abstraction has 8964 states and 41031 transitions. [2020-09-15 00:23:09,434 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-15 00:23:09,434 INFO L276 IsEmpty]: Start isEmpty. Operand 8964 states and 41031 transitions. [2020-09-15 00:23:09,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-15 00:23:09,435 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:23:09,435 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:23:09,435 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2020-09-15 00:23:09,435 INFO L427 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]=== [2020-09-15 00:23:09,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:23:09,436 INFO L82 PathProgramCache]: Analyzing trace with hash -643099645, now seen corresponding path program 6 times [2020-09-15 00:23:09,436 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:23:09,436 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916635399] [2020-09-15 00:23:09,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:23:09,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:23:09,520 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-15 00:23:09,521 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916635399] [2020-09-15 00:23:09,521 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:23:09,521 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-15 00:23:09,521 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110559270] [2020-09-15 00:23:09,522 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-15 00:23:09,522 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:23:09,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-15 00:23:09,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-15 00:23:09,522 INFO L87 Difference]: Start difference. First operand 8964 states and 41031 transitions. Second operand 9 states. [2020-09-15 00:23:10,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:23:10,378 INFO L93 Difference]: Finished difference Result 29379 states and 112099 transitions. [2020-09-15 00:23:10,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:23:10,378 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-09-15 00:23:10,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:23:10,441 INFO L225 Difference]: With dead ends: 29379 [2020-09-15 00:23:10,441 INFO L226 Difference]: Without dead ends: 29356 [2020-09-15 00:23:10,441 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-09-15 00:23:10,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29356 states. [2020-09-15 00:23:10,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29356 to 8573. [2020-09-15 00:23:10,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8573 states. [2020-09-15 00:23:10,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8573 states to 8573 states and 39353 transitions. [2020-09-15 00:23:10,876 INFO L78 Accepts]: Start accepts. Automaton has 8573 states and 39353 transitions. Word has length 21 [2020-09-15 00:23:10,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:23:10,876 INFO L479 AbstractCegarLoop]: Abstraction has 8573 states and 39353 transitions. [2020-09-15 00:23:10,876 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-15 00:23:10,876 INFO L276 IsEmpty]: Start isEmpty. Operand 8573 states and 39353 transitions. [2020-09-15 00:23:10,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-15 00:23:10,878 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:23:10,878 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:23:10,878 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2020-09-15 00:23:10,878 INFO L427 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]=== [2020-09-15 00:23:10,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:23:10,878 INFO L82 PathProgramCache]: Analyzing trace with hash 1599602836, now seen corresponding path program 1 times [2020-09-15 00:23:10,879 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:23:10,879 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033301492] [2020-09-15 00:23:10,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:23:10,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:23:10,942 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-15 00:23:10,942 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033301492] [2020-09-15 00:23:10,942 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1512379136] [2020-09-15 00:23:10,942 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 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 [2020-09-15 00:23:11,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:23:11,024 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 6 conjunts are in the unsatisfiable core [2020-09-15 00:23:11,025 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:23:11,046 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-15 00:23:11,050 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:23:11,050 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-09-15 00:23:11,050 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979772859] [2020-09-15 00:23:11,051 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-15 00:23:11,051 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:23:11,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-15 00:23:11,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-09-15 00:23:11,051 INFO L87 Difference]: Start difference. First operand 8573 states and 39353 transitions. Second operand 9 states. [2020-09-15 00:23:11,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:23:11,453 INFO L93 Difference]: Finished difference Result 19727 states and 80274 transitions. [2020-09-15 00:23:11,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-15 00:23:11,457 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 23 [2020-09-15 00:23:11,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:23:11,517 INFO L225 Difference]: With dead ends: 19727 [2020-09-15 00:23:11,517 INFO L226 Difference]: Without dead ends: 19703 [2020-09-15 00:23:11,517 INFO L675 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 [2020-09-15 00:23:11,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19703 states. [2020-09-15 00:23:11,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19703 to 8847. [2020-09-15 00:23:11,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8847 states. [2020-09-15 00:23:11,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8847 states to 8847 states and 40495 transitions. [2020-09-15 00:23:11,851 INFO L78 Accepts]: Start accepts. Automaton has 8847 states and 40495 transitions. Word has length 23 [2020-09-15 00:23:11,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:23:11,851 INFO L479 AbstractCegarLoop]: Abstraction has 8847 states and 40495 transitions. [2020-09-15 00:23:11,851 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-15 00:23:11,852 INFO L276 IsEmpty]: Start isEmpty. Operand 8847 states and 40495 transitions. [2020-09-15 00:23:11,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-15 00:23:11,853 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:23:11,853 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:23:12,054 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2020-09-15 00:23:12,054 INFO L427 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]=== [2020-09-15 00:23:12,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:23:12,055 INFO L82 PathProgramCache]: Analyzing trace with hash 72758744, now seen corresponding path program 1 times [2020-09-15 00:23:12,055 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:23:12,056 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703425535] [2020-09-15 00:23:12,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:23:12,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:23:12,119 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-15 00:23:12,119 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703425535] [2020-09-15 00:23:12,120 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [388497368] [2020-09-15 00:23:12,120 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 [2020-09-15 00:23:12,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:23:12,230 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 6 conjunts are in the unsatisfiable core [2020-09-15 00:23:12,230 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:23:12,260 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-15 00:23:12,261 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:23:12,261 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-09-15 00:23:12,261 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452206508] [2020-09-15 00:23:12,261 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-15 00:23:12,262 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:23:12,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-15 00:23:12,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-09-15 00:23:12,262 INFO L87 Difference]: Start difference. First operand 8847 states and 40495 transitions. Second operand 9 states. [2020-09-15 00:23:12,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:23:12,705 INFO L93 Difference]: Finished difference Result 20694 states and 84261 transitions. [2020-09-15 00:23:12,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-15 00:23:12,705 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 23 [2020-09-15 00:23:12,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:23:12,751 INFO L225 Difference]: With dead ends: 20694 [2020-09-15 00:23:12,751 INFO L226 Difference]: Without dead ends: 20666 [2020-09-15 00:23:12,751 INFO L675 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 [2020-09-15 00:23:12,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20666 states. [2020-09-15 00:23:13,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20666 to 9115. [2020-09-15 00:23:13,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9115 states. [2020-09-15 00:23:13,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9115 states to 9115 states and 41679 transitions. [2020-09-15 00:23:13,075 INFO L78 Accepts]: Start accepts. Automaton has 9115 states and 41679 transitions. Word has length 23 [2020-09-15 00:23:13,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:23:13,075 INFO L479 AbstractCegarLoop]: Abstraction has 9115 states and 41679 transitions. [2020-09-15 00:23:13,075 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-15 00:23:13,075 INFO L276 IsEmpty]: Start isEmpty. Operand 9115 states and 41679 transitions. [2020-09-15 00:23:13,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-15 00:23:13,077 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:23:13,078 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:23:13,278 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,18 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:23:13,279 INFO L427 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]=== [2020-09-15 00:23:13,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:23:13,279 INFO L82 PathProgramCache]: Analyzing trace with hash -328675496, now seen corresponding path program 1 times [2020-09-15 00:23:13,280 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:23:13,280 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410431598] [2020-09-15 00:23:13,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:23:13,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:23:13,340 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-15 00:23:13,341 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410431598] [2020-09-15 00:23:13,341 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [435858824] [2020-09-15 00:23:13,341 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 [2020-09-15 00:23:13,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:23:13,421 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 6 conjunts are in the unsatisfiable core [2020-09-15 00:23:13,422 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:23:13,438 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-15 00:23:13,439 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:23:13,439 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-09-15 00:23:13,439 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685462463] [2020-09-15 00:23:13,440 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-15 00:23:13,440 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:23:13,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-15 00:23:13,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-09-15 00:23:13,440 INFO L87 Difference]: Start difference. First operand 9115 states and 41679 transitions. Second operand 9 states. [2020-09-15 00:23:13,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:23:13,753 INFO L93 Difference]: Finished difference Result 21396 states and 87360 transitions. [2020-09-15 00:23:13,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-15 00:23:13,753 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 23 [2020-09-15 00:23:13,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:23:13,816 INFO L225 Difference]: With dead ends: 21396 [2020-09-15 00:23:13,816 INFO L226 Difference]: Without dead ends: 21359 [2020-09-15 00:23:13,816 INFO L675 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 [2020-09-15 00:23:13,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21359 states. [2020-09-15 00:23:14,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21359 to 9320. [2020-09-15 00:23:14,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9320 states. [2020-09-15 00:23:14,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9320 states to 9320 states and 42648 transitions. [2020-09-15 00:23:14,189 INFO L78 Accepts]: Start accepts. Automaton has 9320 states and 42648 transitions. Word has length 23 [2020-09-15 00:23:14,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:23:14,190 INFO L479 AbstractCegarLoop]: Abstraction has 9320 states and 42648 transitions. [2020-09-15 00:23:14,190 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-15 00:23:14,190 INFO L276 IsEmpty]: Start isEmpty. Operand 9320 states and 42648 transitions. [2020-09-15 00:23:14,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-15 00:23:14,192 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:23:14,192 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:23:14,393 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable51 [2020-09-15 00:23:14,393 INFO L427 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]=== [2020-09-15 00:23:14,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:23:14,394 INFO L82 PathProgramCache]: Analyzing trace with hash -150456492, now seen corresponding path program 2 times [2020-09-15 00:23:14,394 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:23:14,394 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425430533] [2020-09-15 00:23:14,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:23:14,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:23:14,458 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-15 00:23:14,459 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425430533] [2020-09-15 00:23:14,459 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:23:14,459 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-15 00:23:14,459 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195025295] [2020-09-15 00:23:14,460 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-15 00:23:14,460 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:23:14,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-15 00:23:14,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-15 00:23:14,461 INFO L87 Difference]: Start difference. First operand 9320 states and 42648 transitions. Second operand 7 states. [2020-09-15 00:23:14,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:23:14,802 INFO L93 Difference]: Finished difference Result 21489 states and 87752 transitions. [2020-09-15 00:23:14,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-15 00:23:14,803 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-09-15 00:23:14,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:23:14,851 INFO L225 Difference]: With dead ends: 21489 [2020-09-15 00:23:14,851 INFO L226 Difference]: Without dead ends: 21452 [2020-09-15 00:23:14,852 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-09-15 00:23:14,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21452 states. [2020-09-15 00:23:15,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21452 to 9401. [2020-09-15 00:23:15,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9401 states. [2020-09-15 00:23:15,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9401 states to 9401 states and 43010 transitions. [2020-09-15 00:23:15,196 INFO L78 Accepts]: Start accepts. Automaton has 9401 states and 43010 transitions. Word has length 23 [2020-09-15 00:23:15,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:23:15,196 INFO L479 AbstractCegarLoop]: Abstraction has 9401 states and 43010 transitions. [2020-09-15 00:23:15,196 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-15 00:23:15,196 INFO L276 IsEmpty]: Start isEmpty. Operand 9401 states and 43010 transitions. [2020-09-15 00:23:15,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-15 00:23:15,198 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:23:15,199 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:23:15,199 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2020-09-15 00:23:15,199 INFO L427 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]=== [2020-09-15 00:23:15,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:23:15,199 INFO L82 PathProgramCache]: Analyzing trace with hash -150471558, now seen corresponding path program 2 times [2020-09-15 00:23:15,199 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:23:15,199 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701800292] [2020-09-15 00:23:15,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:23:15,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:23:15,254 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-15 00:23:15,254 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701800292] [2020-09-15 00:23:15,254 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:23:15,255 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-15 00:23:15,255 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077778417] [2020-09-15 00:23:15,255 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-15 00:23:15,255 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:23:15,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-15 00:23:15,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-15 00:23:15,256 INFO L87 Difference]: Start difference. First operand 9401 states and 43010 transitions. Second operand 7 states. [2020-09-15 00:23:15,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:23:15,653 INFO L93 Difference]: Finished difference Result 21218 states and 86469 transitions. [2020-09-15 00:23:15,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-15 00:23:15,654 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-09-15 00:23:15,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:23:15,700 INFO L225 Difference]: With dead ends: 21218 [2020-09-15 00:23:15,700 INFO L226 Difference]: Without dead ends: 21181 [2020-09-15 00:23:15,701 INFO L675 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 [2020-09-15 00:23:15,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21181 states. [2020-09-15 00:23:16,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21181 to 9396. [2020-09-15 00:23:16,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9396 states. [2020-09-15 00:23:16,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9396 states to 9396 states and 42985 transitions. [2020-09-15 00:23:16,035 INFO L78 Accepts]: Start accepts. Automaton has 9396 states and 42985 transitions. Word has length 23 [2020-09-15 00:23:16,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:23:16,035 INFO L479 AbstractCegarLoop]: Abstraction has 9396 states and 42985 transitions. [2020-09-15 00:23:16,035 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-15 00:23:16,035 INFO L276 IsEmpty]: Start isEmpty. Operand 9396 states and 42985 transitions. [2020-09-15 00:23:16,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-15 00:23:16,037 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:23:16,037 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:23:16,037 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2020-09-15 00:23:16,037 INFO L427 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]=== [2020-09-15 00:23:16,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:23:16,038 INFO L82 PathProgramCache]: Analyzing trace with hash -150449920, now seen corresponding path program 2 times [2020-09-15 00:23:16,038 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:23:16,038 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101171686] [2020-09-15 00:23:16,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:23:16,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:23:16,104 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-15 00:23:16,104 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101171686] [2020-09-15 00:23:16,105 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:23:16,105 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-15 00:23:16,105 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517738278] [2020-09-15 00:23:16,105 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-15 00:23:16,106 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:23:16,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-15 00:23:16,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-15 00:23:16,106 INFO L87 Difference]: Start difference. First operand 9396 states and 42985 transitions. Second operand 7 states. [2020-09-15 00:23:16,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:23:16,434 INFO L93 Difference]: Finished difference Result 21047 states and 85702 transitions. [2020-09-15 00:23:16,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-15 00:23:16,435 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-09-15 00:23:16,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:23:16,488 INFO L225 Difference]: With dead ends: 21047 [2020-09-15 00:23:16,489 INFO L226 Difference]: Without dead ends: 21010 [2020-09-15 00:23:16,489 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-09-15 00:23:16,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21010 states. [2020-09-15 00:23:16,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21010 to 9426. [2020-09-15 00:23:16,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9426 states. [2020-09-15 00:23:16,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9426 states to 9426 states and 43057 transitions. [2020-09-15 00:23:16,833 INFO L78 Accepts]: Start accepts. Automaton has 9426 states and 43057 transitions. Word has length 23 [2020-09-15 00:23:16,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:23:16,833 INFO L479 AbstractCegarLoop]: Abstraction has 9426 states and 43057 transitions. [2020-09-15 00:23:16,833 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-15 00:23:16,834 INFO L276 IsEmpty]: Start isEmpty. Operand 9426 states and 43057 transitions. [2020-09-15 00:23:16,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-15 00:23:16,837 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:23:16,837 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:23:16,837 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2020-09-15 00:23:16,837 INFO L427 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]=== [2020-09-15 00:23:16,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:23:16,837 INFO L82 PathProgramCache]: Analyzing trace with hash -156736363, now seen corresponding path program 1 times [2020-09-15 00:23:16,837 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:23:16,837 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728562266] [2020-09-15 00:23:16,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:23:16,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:23:16,926 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-15 00:23:16,926 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728562266] [2020-09-15 00:23:16,926 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [748195908] [2020-09-15 00:23:16,927 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 [2020-09-15 00:23:17,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:23:17,021 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 8 conjunts are in the unsatisfiable core [2020-09-15 00:23:17,021 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:23:17,054 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-15 00:23:17,055 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:23:17,055 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-09-15 00:23:17,055 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946722828] [2020-09-15 00:23:17,055 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-15 00:23:17,055 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:23:17,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-15 00:23:17,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-09-15 00:23:17,058 INFO L87 Difference]: Start difference. First operand 9426 states and 43057 transitions. Second operand 11 states. [2020-09-15 00:23:17,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:23:17,906 INFO L93 Difference]: Finished difference Result 30145 states and 115754 transitions. [2020-09-15 00:23:17,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:23:17,907 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2020-09-15 00:23:17,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:23:17,970 INFO L225 Difference]: With dead ends: 30145 [2020-09-15 00:23:17,971 INFO L226 Difference]: Without dead ends: 30125 [2020-09-15 00:23:17,971 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 250 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-09-15 00:23:18,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30125 states. [2020-09-15 00:23:18,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30125 to 9338. [2020-09-15 00:23:18,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9338 states. [2020-09-15 00:23:18,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9338 states to 9338 states and 42582 transitions. [2020-09-15 00:23:18,406 INFO L78 Accepts]: Start accepts. Automaton has 9338 states and 42582 transitions. Word has length 25 [2020-09-15 00:23:18,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:23:18,406 INFO L479 AbstractCegarLoop]: Abstraction has 9338 states and 42582 transitions. [2020-09-15 00:23:18,406 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-15 00:23:18,406 INFO L276 IsEmpty]: Start isEmpty. Operand 9338 states and 42582 transitions. [2020-09-15 00:23:18,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-15 00:23:18,410 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:23:18,410 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:23:18,610 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2020-09-15 00:23:18,611 INFO L427 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]=== [2020-09-15 00:23:18,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:23:18,612 INFO L82 PathProgramCache]: Analyzing trace with hash -558170603, now seen corresponding path program 1 times [2020-09-15 00:23:18,612 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:23:18,612 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327530300] [2020-09-15 00:23:18,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:23:18,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:23:18,703 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-15 00:23:18,704 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327530300] [2020-09-15 00:23:18,704 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [632010790] [2020-09-15 00:23:18,704 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 [2020-09-15 00:23:18,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:23:18,815 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 8 conjunts are in the unsatisfiable core [2020-09-15 00:23:18,815 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:23:18,846 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-15 00:23:18,847 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:23:18,847 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-09-15 00:23:18,847 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85973551] [2020-09-15 00:23:18,847 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-15 00:23:18,848 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:23:18,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-15 00:23:18,848 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-09-15 00:23:18,848 INFO L87 Difference]: Start difference. First operand 9338 states and 42582 transitions. Second operand 11 states. [2020-09-15 00:23:19,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:23:19,711 INFO L93 Difference]: Finished difference Result 29696 states and 113916 transitions. [2020-09-15 00:23:19,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:23:19,712 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2020-09-15 00:23:19,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:23:19,774 INFO L225 Difference]: With dead ends: 29696 [2020-09-15 00:23:19,774 INFO L226 Difference]: Without dead ends: 29676 [2020-09-15 00:23:19,775 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 248 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-09-15 00:23:19,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29676 states. [2020-09-15 00:23:20,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29676 to 9291. [2020-09-15 00:23:20,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9291 states. [2020-09-15 00:23:20,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9291 states to 9291 states and 42295 transitions. [2020-09-15 00:23:20,191 INFO L78 Accepts]: Start accepts. Automaton has 9291 states and 42295 transitions. Word has length 25 [2020-09-15 00:23:20,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:23:20,191 INFO L479 AbstractCegarLoop]: Abstraction has 9291 states and 42295 transitions. [2020-09-15 00:23:20,191 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-15 00:23:20,191 INFO L276 IsEmpty]: Start isEmpty. Operand 9291 states and 42295 transitions. [2020-09-15 00:23:20,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-15 00:23:20,194 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:23:20,194 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:23:20,395 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2020-09-15 00:23:20,395 INFO L427 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]=== [2020-09-15 00:23:20,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:23:20,396 INFO L82 PathProgramCache]: Analyzing trace with hash -379966665, now seen corresponding path program 2 times [2020-09-15 00:23:20,396 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:23:20,397 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206719699] [2020-09-15 00:23:20,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:23:20,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:23:20,477 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-15 00:23:20,478 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206719699] [2020-09-15 00:23:20,478 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [594363120] [2020-09-15 00:23:20,478 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 [2020-09-15 00:23:20,576 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-09-15 00:23:20,577 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-15 00:23:20,578 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 8 conjunts are in the unsatisfiable core [2020-09-15 00:23:20,578 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:23:20,602 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-15 00:23:20,603 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:23:20,603 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-09-15 00:23:20,603 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458090049] [2020-09-15 00:23:20,603 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-15 00:23:20,603 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:23:20,604 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-15 00:23:20,604 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-09-15 00:23:20,604 INFO L87 Difference]: Start difference. First operand 9291 states and 42295 transitions. Second operand 11 states. [2020-09-15 00:23:21,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:23:21,387 INFO L93 Difference]: Finished difference Result 29267 states and 112142 transitions. [2020-09-15 00:23:21,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:23:21,388 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2020-09-15 00:23:21,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:23:21,460 INFO L225 Difference]: With dead ends: 29267 [2020-09-15 00:23:21,460 INFO L226 Difference]: Without dead ends: 29245 [2020-09-15 00:23:21,460 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 252 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-09-15 00:23:21,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29245 states. [2020-09-15 00:23:21,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29245 to 9288. [2020-09-15 00:23:21,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9288 states. [2020-09-15 00:23:21,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9288 states to 9288 states and 42242 transitions. [2020-09-15 00:23:21,957 INFO L78 Accepts]: Start accepts. Automaton has 9288 states and 42242 transitions. Word has length 25 [2020-09-15 00:23:21,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:23:21,958 INFO L479 AbstractCegarLoop]: Abstraction has 9288 states and 42242 transitions. [2020-09-15 00:23:21,958 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-15 00:23:21,958 INFO L276 IsEmpty]: Start isEmpty. Operand 9288 states and 42242 transitions. [2020-09-15 00:23:21,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-15 00:23:21,961 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:23:21,961 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:23:22,162 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2020-09-15 00:23:22,162 INFO L427 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]=== [2020-09-15 00:23:22,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:23:22,163 INFO L82 PathProgramCache]: Analyzing trace with hash -379945027, now seen corresponding path program 2 times [2020-09-15 00:23:22,163 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:23:22,163 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184455052] [2020-09-15 00:23:22,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:23:22,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:23:22,244 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-15 00:23:22,244 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184455052] [2020-09-15 00:23:22,244 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [107886484] [2020-09-15 00:23:22,245 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 [2020-09-15 00:23:22,353 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-09-15 00:23:22,354 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-15 00:23:22,355 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 8 conjunts are in the unsatisfiable core [2020-09-15 00:23:22,355 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:23:22,382 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-15 00:23:22,382 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:23:22,382 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-09-15 00:23:22,382 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130012067] [2020-09-15 00:23:22,383 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-15 00:23:22,383 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:23:22,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-15 00:23:22,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-09-15 00:23:22,383 INFO L87 Difference]: Start difference. First operand 9288 states and 42242 transitions. Second operand 11 states. [2020-09-15 00:23:23,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:23:23,207 INFO L93 Difference]: Finished difference Result 28920 states and 110796 transitions. [2020-09-15 00:23:23,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:23:23,207 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2020-09-15 00:23:23,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:23:23,268 INFO L225 Difference]: With dead ends: 28920 [2020-09-15 00:23:23,268 INFO L226 Difference]: Without dead ends: 28898 [2020-09-15 00:23:23,268 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 250 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-09-15 00:23:23,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28898 states. [2020-09-15 00:23:23,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28898 to 9176. [2020-09-15 00:23:23,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9176 states. [2020-09-15 00:23:23,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9176 states to 9176 states and 41695 transitions. [2020-09-15 00:23:23,817 INFO L78 Accepts]: Start accepts. Automaton has 9176 states and 41695 transitions. Word has length 25 [2020-09-15 00:23:23,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:23:23,817 INFO L479 AbstractCegarLoop]: Abstraction has 9176 states and 41695 transitions. [2020-09-15 00:23:23,817 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-15 00:23:23,817 INFO L276 IsEmpty]: Start isEmpty. Operand 9176 states and 41695 transitions. [2020-09-15 00:23:23,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-15 00:23:23,821 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:23:23,821 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:23:24,021 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:23:24,022 INFO L427 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]=== [2020-09-15 00:23:24,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:23:24,023 INFO L82 PathProgramCache]: Analyzing trace with hash 1211690581, now seen corresponding path program 3 times [2020-09-15 00:23:24,023 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:23:24,023 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288674400] [2020-09-15 00:23:24,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:23:24,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:23:24,109 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-15 00:23:24,110 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288674400] [2020-09-15 00:23:24,110 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1900266604] [2020-09-15 00:23:24,110 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 [2020-09-15 00:23:24,211 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-09-15 00:23:24,212 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-15 00:23:24,212 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 8 conjunts are in the unsatisfiable core [2020-09-15 00:23:24,213 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:23:24,241 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-15 00:23:24,241 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:23:24,241 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-09-15 00:23:24,242 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110939778] [2020-09-15 00:23:24,242 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-15 00:23:24,242 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:23:24,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-15 00:23:24,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-09-15 00:23:24,243 INFO L87 Difference]: Start difference. First operand 9176 states and 41695 transitions. Second operand 11 states. [2020-09-15 00:23:25,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:23:25,055 INFO L93 Difference]: Finished difference Result 29038 states and 111216 transitions. [2020-09-15 00:23:25,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:23:25,056 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2020-09-15 00:23:25,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:23:25,117 INFO L225 Difference]: With dead ends: 29038 [2020-09-15 00:23:25,117 INFO L226 Difference]: Without dead ends: 29018 [2020-09-15 00:23:25,118 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 250 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-09-15 00:23:25,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29018 states. [2020-09-15 00:23:25,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29018 to 9000. [2020-09-15 00:23:25,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9000 states. [2020-09-15 00:23:25,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9000 states to 9000 states and 40897 transitions. [2020-09-15 00:23:25,528 INFO L78 Accepts]: Start accepts. Automaton has 9000 states and 40897 transitions. Word has length 25 [2020-09-15 00:23:25,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:23:25,528 INFO L479 AbstractCegarLoop]: Abstraction has 9000 states and 40897 transitions. [2020-09-15 00:23:25,528 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-15 00:23:25,528 INFO L276 IsEmpty]: Start isEmpty. Operand 9000 states and 40897 transitions. [2020-09-15 00:23:25,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-15 00:23:25,532 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:23:25,532 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:23:25,733 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2020-09-15 00:23:25,733 INFO L427 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]=== [2020-09-15 00:23:25,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:23:25,734 INFO L82 PathProgramCache]: Analyzing trace with hash 1201691221, now seen corresponding path program 4 times [2020-09-15 00:23:25,734 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:23:25,734 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23595096] [2020-09-15 00:23:25,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:23:25,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:23:25,816 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-15 00:23:25,816 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23595096] [2020-09-15 00:23:25,817 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1171066647] [2020-09-15 00:23:25,817 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 [2020-09-15 00:23:25,905 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-09-15 00:23:25,905 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-15 00:23:25,906 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 8 conjunts are in the unsatisfiable core [2020-09-15 00:23:25,907 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:23:25,929 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-15 00:23:25,931 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:23:25,931 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-09-15 00:23:25,932 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153312790] [2020-09-15 00:23:25,932 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-15 00:23:25,932 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:23:25,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-15 00:23:25,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-09-15 00:23:25,933 INFO L87 Difference]: Start difference. First operand 9000 states and 40897 transitions. Second operand 11 states. [2020-09-15 00:23:26,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:23:26,782 INFO L93 Difference]: Finished difference Result 29283 states and 112236 transitions. [2020-09-15 00:23:26,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:23:26,782 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2020-09-15 00:23:26,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:23:26,852 INFO L225 Difference]: With dead ends: 29283 [2020-09-15 00:23:26,852 INFO L226 Difference]: Without dead ends: 29261 [2020-09-15 00:23:26,852 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 248 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-09-15 00:23:26,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29261 states. [2020-09-15 00:23:27,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29261 to 8997. [2020-09-15 00:23:27,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8997 states. [2020-09-15 00:23:27,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8997 states to 8997 states and 40842 transitions. [2020-09-15 00:23:27,267 INFO L78 Accepts]: Start accepts. Automaton has 8997 states and 40842 transitions. Word has length 25 [2020-09-15 00:23:27,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:23:27,267 INFO L479 AbstractCegarLoop]: Abstraction has 8997 states and 40842 transitions. [2020-09-15 00:23:27,267 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-15 00:23:27,267 INFO L276 IsEmpty]: Start isEmpty. Operand 8997 states and 40842 transitions. [2020-09-15 00:23:27,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-15 00:23:27,270 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:23:27,271 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:23:27,471 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:23:27,471 INFO L427 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]=== [2020-09-15 00:23:27,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:23:27,472 INFO L82 PathProgramCache]: Analyzing trace with hash 1201697793, now seen corresponding path program 1 times [2020-09-15 00:23:27,472 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:23:27,473 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513167029] [2020-09-15 00:23:27,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:23:27,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:23:27,561 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-15 00:23:27,562 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513167029] [2020-09-15 00:23:27,562 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1278933894] [2020-09-15 00:23:27,562 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 [2020-09-15 00:23:27,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:23:27,659 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 8 conjunts are in the unsatisfiable core [2020-09-15 00:23:27,660 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:23:27,687 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-15 00:23:27,687 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:23:27,688 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-09-15 00:23:27,688 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430034569] [2020-09-15 00:23:27,688 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-15 00:23:27,688 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:23:27,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-15 00:23:27,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-09-15 00:23:27,689 INFO L87 Difference]: Start difference. First operand 8997 states and 40842 transitions. Second operand 11 states. [2020-09-15 00:23:28,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:23:28,734 INFO L93 Difference]: Finished difference Result 29105 states and 111801 transitions. [2020-09-15 00:23:28,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:23:28,734 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2020-09-15 00:23:28,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:23:28,801 INFO L225 Difference]: With dead ends: 29105 [2020-09-15 00:23:28,801 INFO L226 Difference]: Without dead ends: 29085 [2020-09-15 00:23:28,802 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 247 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-09-15 00:23:28,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29085 states. [2020-09-15 00:23:29,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29085 to 8955. [2020-09-15 00:23:29,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8955 states. [2020-09-15 00:23:29,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8955 states to 8955 states and 40593 transitions. [2020-09-15 00:23:29,214 INFO L78 Accepts]: Start accepts. Automaton has 8955 states and 40593 transitions. Word has length 25 [2020-09-15 00:23:29,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:23:29,214 INFO L479 AbstractCegarLoop]: Abstraction has 8955 states and 40593 transitions. [2020-09-15 00:23:29,214 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-15 00:23:29,214 INFO L276 IsEmpty]: Start isEmpty. Operand 8955 states and 40593 transitions. [2020-09-15 00:23:29,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-15 00:23:29,218 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:23:29,218 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:23:29,418 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable61 [2020-09-15 00:23:29,419 INFO L427 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]=== [2020-09-15 00:23:29,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:23:29,419 INFO L82 PathProgramCache]: Analyzing trace with hash 1218006273, now seen corresponding path program 2 times [2020-09-15 00:23:29,420 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:23:29,420 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313092715] [2020-09-15 00:23:29,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:23:29,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:23:29,512 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-15 00:23:29,512 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313092715] [2020-09-15 00:23:29,513 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1828259884] [2020-09-15 00:23:29,513 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 [2020-09-15 00:23:29,614 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-09-15 00:23:29,614 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-15 00:23:29,616 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 8 conjunts are in the unsatisfiable core [2020-09-15 00:23:29,617 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:23:29,650 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-15 00:23:29,651 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:23:29,651 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-09-15 00:23:29,651 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981514652] [2020-09-15 00:23:29,652 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-15 00:23:29,652 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:23:29,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-15 00:23:29,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-09-15 00:23:29,652 INFO L87 Difference]: Start difference. First operand 8955 states and 40593 transitions. Second operand 11 states. [2020-09-15 00:23:30,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:23:30,536 INFO L93 Difference]: Finished difference Result 28806 states and 110558 transitions. [2020-09-15 00:23:30,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:23:30,536 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2020-09-15 00:23:30,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:23:30,607 INFO L225 Difference]: With dead ends: 28806 [2020-09-15 00:23:30,607 INFO L226 Difference]: Without dead ends: 28779 [2020-09-15 00:23:30,608 INFO L675 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 [2020-09-15 00:23:30,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28779 states. [2020-09-15 00:23:30,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28779 to 8841. [2020-09-15 00:23:30,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8841 states. [2020-09-15 00:23:31,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8841 states to 8841 states and 40062 transitions. [2020-09-15 00:23:31,020 INFO L78 Accepts]: Start accepts. Automaton has 8841 states and 40062 transitions. Word has length 25 [2020-09-15 00:23:31,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:23:31,021 INFO L479 AbstractCegarLoop]: Abstraction has 8841 states and 40062 transitions. [2020-09-15 00:23:31,021 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-15 00:23:31,021 INFO L276 IsEmpty]: Start isEmpty. Operand 8841 states and 40062 transitions. [2020-09-15 00:23:31,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-15 00:23:31,025 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:23:31,025 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:23:31,225 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,27 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:23:31,226 INFO L427 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]=== [2020-09-15 00:23:31,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:23:31,226 INFO L82 PathProgramCache]: Analyzing trace with hash 1980442581, now seen corresponding path program 3 times [2020-09-15 00:23:31,227 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:23:31,227 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219735887] [2020-09-15 00:23:31,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:23:31,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:23:31,320 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-15 00:23:31,320 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219735887] [2020-09-15 00:23:31,320 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [53336104] [2020-09-15 00:23:31,321 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 [2020-09-15 00:23:31,424 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-09-15 00:23:31,424 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-15 00:23:31,425 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 8 conjunts are in the unsatisfiable core [2020-09-15 00:23:31,426 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:23:31,450 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-15 00:23:31,451 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:23:31,451 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-09-15 00:23:31,451 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823776503] [2020-09-15 00:23:31,451 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-15 00:23:31,451 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:23:31,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-15 00:23:31,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-09-15 00:23:31,452 INFO L87 Difference]: Start difference. First operand 8841 states and 40062 transitions. Second operand 11 states. [2020-09-15 00:23:32,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:23:32,355 INFO L93 Difference]: Finished difference Result 28636 states and 109852 transitions. [2020-09-15 00:23:32,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:23:32,356 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2020-09-15 00:23:32,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:23:32,418 INFO L225 Difference]: With dead ends: 28636 [2020-09-15 00:23:32,418 INFO L226 Difference]: Without dead ends: 28616 [2020-09-15 00:23:32,418 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 247 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-09-15 00:23:32,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28616 states. [2020-09-15 00:23:32,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28616 to 8702. [2020-09-15 00:23:32,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8702 states. [2020-09-15 00:23:32,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8702 states to 8702 states and 39438 transitions. [2020-09-15 00:23:32,826 INFO L78 Accepts]: Start accepts. Automaton has 8702 states and 39438 transitions. Word has length 25 [2020-09-15 00:23:32,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:23:32,826 INFO L479 AbstractCegarLoop]: Abstraction has 8702 states and 39438 transitions. [2020-09-15 00:23:32,826 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-15 00:23:32,826 INFO L276 IsEmpty]: Start isEmpty. Operand 8702 states and 39438 transitions. [2020-09-15 00:23:32,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-15 00:23:32,829 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:23:32,829 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:23:33,030 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable63 [2020-09-15 00:23:33,030 INFO L427 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]=== [2020-09-15 00:23:33,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:23:33,031 INFO L82 PathProgramCache]: Analyzing trace with hash 1965964155, now seen corresponding path program 3 times [2020-09-15 00:23:33,031 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:23:33,031 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18377573] [2020-09-15 00:23:33,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:23:33,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:23:33,111 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-15 00:23:33,112 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18377573] [2020-09-15 00:23:33,112 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2087104084] [2020-09-15 00:23:33,112 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 [2020-09-15 00:23:33,201 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-09-15 00:23:33,201 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-15 00:23:33,202 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 8 conjunts are in the unsatisfiable core [2020-09-15 00:23:33,203 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:23:33,233 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-15 00:23:33,233 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:23:33,233 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-09-15 00:23:33,233 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360638204] [2020-09-15 00:23:33,234 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-15 00:23:33,234 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:23:33,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-15 00:23:33,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-09-15 00:23:33,234 INFO L87 Difference]: Start difference. First operand 8702 states and 39438 transitions. Second operand 11 states. [2020-09-15 00:23:34,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:23:34,104 INFO L93 Difference]: Finished difference Result 28297 states and 108461 transitions. [2020-09-15 00:23:34,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:23:34,105 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2020-09-15 00:23:34,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:23:34,165 INFO L225 Difference]: With dead ends: 28297 [2020-09-15 00:23:34,166 INFO L226 Difference]: Without dead ends: 28277 [2020-09-15 00:23:34,166 INFO L675 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 [2020-09-15 00:23:34,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28277 states. [2020-09-15 00:23:34,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28277 to 8596. [2020-09-15 00:23:34,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8596 states. [2020-09-15 00:23:34,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8596 states to 8596 states and 38978 transitions. [2020-09-15 00:23:34,557 INFO L78 Accepts]: Start accepts. Automaton has 8596 states and 38978 transitions. Word has length 25 [2020-09-15 00:23:34,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:23:34,558 INFO L479 AbstractCegarLoop]: Abstraction has 8596 states and 38978 transitions. [2020-09-15 00:23:34,558 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-15 00:23:34,558 INFO L276 IsEmpty]: Start isEmpty. Operand 8596 states and 38978 transitions. [2020-09-15 00:23:34,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-15 00:23:34,560 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:23:34,561 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:23:34,761 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64,29 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:23:34,761 INFO L427 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]=== [2020-09-15 00:23:34,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:23:34,762 INFO L82 PathProgramCache]: Analyzing trace with hash 1970443221, now seen corresponding path program 4 times [2020-09-15 00:23:34,763 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:23:34,763 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940017906] [2020-09-15 00:23:34,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:23:34,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:23:34,842 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-15 00:23:34,842 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940017906] [2020-09-15 00:23:34,843 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1372881507] [2020-09-15 00:23:34,843 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 [2020-09-15 00:23:34,952 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-09-15 00:23:34,952 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-15 00:23:34,953 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 8 conjunts are in the unsatisfiable core [2020-09-15 00:23:34,953 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:23:34,989 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-15 00:23:34,990 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:23:34,990 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-09-15 00:23:34,990 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529345130] [2020-09-15 00:23:34,990 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-15 00:23:34,990 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:23:34,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-15 00:23:34,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-09-15 00:23:34,991 INFO L87 Difference]: Start difference. First operand 8596 states and 38978 transitions. Second operand 11 states. [2020-09-15 00:23:35,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:23:35,800 INFO L93 Difference]: Finished difference Result 28565 states and 109596 transitions. [2020-09-15 00:23:35,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:23:35,801 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2020-09-15 00:23:35,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:23:35,863 INFO L225 Difference]: With dead ends: 28565 [2020-09-15 00:23:35,863 INFO L226 Difference]: Without dead ends: 28538 [2020-09-15 00:23:35,863 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 245 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-09-15 00:23:36,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28538 states. [2020-09-15 00:23:36,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28538 to 8563. [2020-09-15 00:23:36,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8563 states. [2020-09-15 00:23:36,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8563 states to 8563 states and 38809 transitions. [2020-09-15 00:23:36,260 INFO L78 Accepts]: Start accepts. Automaton has 8563 states and 38809 transitions. Word has length 25 [2020-09-15 00:23:36,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:23:36,260 INFO L479 AbstractCegarLoop]: Abstraction has 8563 states and 38809 transitions. [2020-09-15 00:23:36,260 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-15 00:23:36,261 INFO L276 IsEmpty]: Start isEmpty. Operand 8563 states and 38809 transitions. [2020-09-15 00:23:36,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-15 00:23:36,264 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:23:36,264 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:23:36,470 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable65 [2020-09-15 00:23:36,471 INFO L427 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]=== [2020-09-15 00:23:36,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:23:36,471 INFO L82 PathProgramCache]: Analyzing trace with hash 1970428155, now seen corresponding path program 4 times [2020-09-15 00:23:36,471 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:23:36,472 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030469569] [2020-09-15 00:23:36,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:23:36,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:23:36,555 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-15 00:23:36,556 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030469569] [2020-09-15 00:23:36,556 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1822469673] [2020-09-15 00:23:36,556 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 [2020-09-15 00:23:36,658 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-09-15 00:23:36,659 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-15 00:23:36,660 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 8 conjunts are in the unsatisfiable core [2020-09-15 00:23:36,661 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:23:36,687 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-15 00:23:36,688 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:23:36,688 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-09-15 00:23:36,688 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491263436] [2020-09-15 00:23:36,688 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-15 00:23:36,688 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:23:36,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-15 00:23:36,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-09-15 00:23:36,689 INFO L87 Difference]: Start difference. First operand 8563 states and 38809 transitions. Second operand 11 states. [2020-09-15 00:23:37,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:23:37,534 INFO L93 Difference]: Finished difference Result 28213 states and 108237 transitions. [2020-09-15 00:23:37,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:23:37,535 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2020-09-15 00:23:37,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:23:37,595 INFO L225 Difference]: With dead ends: 28213 [2020-09-15 00:23:37,595 INFO L226 Difference]: Without dead ends: 28186 [2020-09-15 00:23:37,595 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 245 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-09-15 00:23:37,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28186 states. [2020-09-15 00:23:37,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28186 to 8421. [2020-09-15 00:23:37,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8421 states. [2020-09-15 00:23:37,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8421 states to 8421 states and 38146 transitions. [2020-09-15 00:23:37,977 INFO L78 Accepts]: Start accepts. Automaton has 8421 states and 38146 transitions. Word has length 25 [2020-09-15 00:23:37,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:23:37,978 INFO L479 AbstractCegarLoop]: Abstraction has 8421 states and 38146 transitions. [2020-09-15 00:23:37,978 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-15 00:23:37,978 INFO L276 IsEmpty]: Start isEmpty. Operand 8421 states and 38146 transitions. [2020-09-15 00:23:37,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-15 00:23:37,981 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:23:37,981 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:23:38,194 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66,31 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:23:38,194 INFO L427 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]=== [2020-09-15 00:23:38,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:23:38,195 INFO L82 PathProgramCache]: Analyzing trace with hash -1943046054, now seen corresponding path program 1 times [2020-09-15 00:23:38,195 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:23:38,196 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581918546] [2020-09-15 00:23:38,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:23:38,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:23:38,245 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-09-15 00:23:38,246 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581918546] [2020-09-15 00:23:38,246 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:23:38,246 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-15 00:23:38,246 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542518840] [2020-09-15 00:23:38,246 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-15 00:23:38,247 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:23:38,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-15 00:23:38,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-15 00:23:38,247 INFO L87 Difference]: Start difference. First operand 8421 states and 38146 transitions. Second operand 5 states. [2020-09-15 00:23:38,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:23:38,468 INFO L93 Difference]: Finished difference Result 13647 states and 59401 transitions. [2020-09-15 00:23:38,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-15 00:23:38,469 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2020-09-15 00:23:38,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:23:38,539 INFO L225 Difference]: With dead ends: 13647 [2020-09-15 00:23:38,539 INFO L226 Difference]: Without dead ends: 13615 [2020-09-15 00:23:38,540 INFO L675 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 [2020-09-15 00:23:38,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13615 states. [2020-09-15 00:23:39,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13615 to 9928. [2020-09-15 00:23:39,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9928 states. [2020-09-15 00:23:39,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9928 states to 9928 states and 44651 transitions. [2020-09-15 00:23:39,194 INFO L78 Accepts]: Start accepts. Automaton has 9928 states and 44651 transitions. Word has length 25 [2020-09-15 00:23:39,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:23:39,196 INFO L479 AbstractCegarLoop]: Abstraction has 9928 states and 44651 transitions. [2020-09-15 00:23:39,196 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-15 00:23:39,196 INFO L276 IsEmpty]: Start isEmpty. Operand 9928 states and 44651 transitions. [2020-09-15 00:23:39,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-15 00:23:39,200 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:23:39,200 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:23:39,201 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2020-09-15 00:23:39,201 INFO L427 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]=== [2020-09-15 00:23:39,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:23:39,201 INFO L82 PathProgramCache]: Analyzing trace with hash 1440199159, now seen corresponding path program 5 times [2020-09-15 00:23:39,201 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:23:39,202 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237082871] [2020-09-15 00:23:39,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:23:39,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:23:39,285 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-15 00:23:39,285 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237082871] [2020-09-15 00:23:39,285 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:23:39,285 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-15 00:23:39,286 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210447953] [2020-09-15 00:23:39,286 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-15 00:23:39,286 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:23:39,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-15 00:23:39,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-15 00:23:39,287 INFO L87 Difference]: Start difference. First operand 9928 states and 44651 transitions. Second operand 9 states. [2020-09-15 00:23:40,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:23:40,035 INFO L93 Difference]: Finished difference Result 31816 states and 123346 transitions. [2020-09-15 00:23:40,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:23:40,036 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-09-15 00:23:40,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:23:40,104 INFO L225 Difference]: With dead ends: 31816 [2020-09-15 00:23:40,104 INFO L226 Difference]: Without dead ends: 31790 [2020-09-15 00:23:40,105 INFO L675 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 [2020-09-15 00:23:40,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31790 states. [2020-09-15 00:23:40,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31790 to 9766. [2020-09-15 00:23:40,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9766 states. [2020-09-15 00:23:40,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9766 states to 9766 states and 43873 transitions. [2020-09-15 00:23:40,565 INFO L78 Accepts]: Start accepts. Automaton has 9766 states and 43873 transitions. Word has length 25 [2020-09-15 00:23:40,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:23:40,565 INFO L479 AbstractCegarLoop]: Abstraction has 9766 states and 43873 transitions. [2020-09-15 00:23:40,565 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-15 00:23:40,565 INFO L276 IsEmpty]: Start isEmpty. Operand 9766 states and 43873 transitions. [2020-09-15 00:23:40,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-15 00:23:40,568 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:23:40,568 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:23:40,568 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2020-09-15 00:23:40,568 INFO L427 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]=== [2020-09-15 00:23:40,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:23:40,568 INFO L82 PathProgramCache]: Analyzing trace with hash 1440220797, now seen corresponding path program 5 times [2020-09-15 00:23:40,569 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:23:40,569 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980087156] [2020-09-15 00:23:40,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:23:40,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:23:40,656 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-15 00:23:40,657 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980087156] [2020-09-15 00:23:40,657 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:23:40,657 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-15 00:23:40,658 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947566011] [2020-09-15 00:23:40,658 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-15 00:23:40,658 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:23:40,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-15 00:23:40,659 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-15 00:23:40,659 INFO L87 Difference]: Start difference. First operand 9766 states and 43873 transitions. Second operand 9 states. [2020-09-15 00:23:41,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:23:41,431 INFO L93 Difference]: Finished difference Result 31277 states and 121098 transitions. [2020-09-15 00:23:41,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:23:41,432 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-09-15 00:23:41,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:23:41,508 INFO L225 Difference]: With dead ends: 31277 [2020-09-15 00:23:41,509 INFO L226 Difference]: Without dead ends: 31251 [2020-09-15 00:23:41,509 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-09-15 00:23:41,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31251 states. [2020-09-15 00:23:41,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31251 to 9592. [2020-09-15 00:23:41,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9592 states. [2020-09-15 00:23:41,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9592 states to 9592 states and 43051 transitions. [2020-09-15 00:23:41,954 INFO L78 Accepts]: Start accepts. Automaton has 9592 states and 43051 transitions. Word has length 25 [2020-09-15 00:23:41,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:23:41,954 INFO L479 AbstractCegarLoop]: Abstraction has 9592 states and 43051 transitions. [2020-09-15 00:23:41,954 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-15 00:23:41,954 INFO L276 IsEmpty]: Start isEmpty. Operand 9592 states and 43051 transitions. [2020-09-15 00:23:41,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-15 00:23:41,957 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:23:41,958 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:23:41,958 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2020-09-15 00:23:41,958 INFO L427 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]=== [2020-09-15 00:23:41,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:23:41,958 INFO L82 PathProgramCache]: Analyzing trace with hash 1425735799, now seen corresponding path program 6 times [2020-09-15 00:23:41,958 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:23:41,958 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798584402] [2020-09-15 00:23:41,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:23:41,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:23:42,040 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-15 00:23:42,040 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798584402] [2020-09-15 00:23:42,040 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:23:42,041 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-15 00:23:42,041 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367987806] [2020-09-15 00:23:42,041 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-15 00:23:42,041 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:23:42,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-15 00:23:42,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-15 00:23:42,042 INFO L87 Difference]: Start difference. First operand 9592 states and 43051 transitions. Second operand 9 states. [2020-09-15 00:23:42,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:23:42,820 INFO L93 Difference]: Finished difference Result 30952 states and 119650 transitions. [2020-09-15 00:23:42,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:23:42,820 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-09-15 00:23:42,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:23:42,886 INFO L225 Difference]: With dead ends: 30952 [2020-09-15 00:23:42,886 INFO L226 Difference]: Without dead ends: 30919 [2020-09-15 00:23:42,886 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-09-15 00:23:43,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30919 states. [2020-09-15 00:23:43,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30919 to 9246. [2020-09-15 00:23:43,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9246 states. [2020-09-15 00:23:43,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9246 states to 9246 states and 41509 transitions. [2020-09-15 00:23:43,320 INFO L78 Accepts]: Start accepts. Automaton has 9246 states and 41509 transitions. Word has length 25 [2020-09-15 00:23:43,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:23:43,321 INFO L479 AbstractCegarLoop]: Abstraction has 9246 states and 41509 transitions. [2020-09-15 00:23:43,321 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-15 00:23:43,321 INFO L276 IsEmpty]: Start isEmpty. Operand 9246 states and 41509 transitions. [2020-09-15 00:23:43,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-15 00:23:43,324 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:23:43,324 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:23:43,324 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2020-09-15 00:23:43,324 INFO L427 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]=== [2020-09-15 00:23:43,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:23:43,324 INFO L82 PathProgramCache]: Analyzing trace with hash 1425742371, now seen corresponding path program 5 times [2020-09-15 00:23:43,324 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:23:43,325 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043011127] [2020-09-15 00:23:43,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:23:43,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:23:43,409 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-15 00:23:43,410 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043011127] [2020-09-15 00:23:43,410 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:23:43,410 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-15 00:23:43,410 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134729281] [2020-09-15 00:23:43,411 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-15 00:23:43,411 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:23:43,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-15 00:23:43,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-15 00:23:43,411 INFO L87 Difference]: Start difference. First operand 9246 states and 41509 transitions. Second operand 9 states. [2020-09-15 00:23:44,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:23:44,312 INFO L93 Difference]: Finished difference Result 30541 states and 117947 transitions. [2020-09-15 00:23:44,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:23:44,312 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-09-15 00:23:44,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:23:44,377 INFO L225 Difference]: With dead ends: 30541 [2020-09-15 00:23:44,377 INFO L226 Difference]: Without dead ends: 30515 [2020-09-15 00:23:44,378 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-09-15 00:23:44,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30515 states. [2020-09-15 00:23:44,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30515 to 9136. [2020-09-15 00:23:44,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9136 states. [2020-09-15 00:23:44,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9136 states to 9136 states and 40999 transitions. [2020-09-15 00:23:44,804 INFO L78 Accepts]: Start accepts. Automaton has 9136 states and 40999 transitions. Word has length 25 [2020-09-15 00:23:44,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:23:44,804 INFO L479 AbstractCegarLoop]: Abstraction has 9136 states and 40999 transitions. [2020-09-15 00:23:44,804 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-15 00:23:44,804 INFO L276 IsEmpty]: Start isEmpty. Operand 9136 states and 40999 transitions. [2020-09-15 00:23:44,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-15 00:23:44,807 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:23:44,807 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:23:44,807 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2020-09-15 00:23:44,807 INFO L427 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]=== [2020-09-15 00:23:44,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:23:44,808 INFO L82 PathProgramCache]: Analyzing trace with hash 1446529917, now seen corresponding path program 6 times [2020-09-15 00:23:44,808 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:23:44,808 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109137711] [2020-09-15 00:23:44,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:23:44,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:23:44,891 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-15 00:23:44,891 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109137711] [2020-09-15 00:23:44,892 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:23:44,892 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-15 00:23:44,892 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414219006] [2020-09-15 00:23:44,892 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-15 00:23:44,892 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:23:44,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-15 00:23:44,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-15 00:23:44,893 INFO L87 Difference]: Start difference. First operand 9136 states and 40999 transitions. Second operand 9 states. [2020-09-15 00:23:45,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:23:45,757 INFO L93 Difference]: Finished difference Result 30263 states and 116773 transitions. [2020-09-15 00:23:45,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:23:45,758 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-09-15 00:23:45,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:23:45,827 INFO L225 Difference]: With dead ends: 30263 [2020-09-15 00:23:45,828 INFO L226 Difference]: Without dead ends: 30230 [2020-09-15 00:23:45,828 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-09-15 00:23:45,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30230 states. [2020-09-15 00:23:46,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30230 to 8877. [2020-09-15 00:23:46,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8877 states. [2020-09-15 00:23:46,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8877 states to 8877 states and 39872 transitions. [2020-09-15 00:23:46,268 INFO L78 Accepts]: Start accepts. Automaton has 8877 states and 39872 transitions. Word has length 25 [2020-09-15 00:23:46,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:23:46,269 INFO L479 AbstractCegarLoop]: Abstraction has 8877 states and 39872 transitions. [2020-09-15 00:23:46,269 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-15 00:23:46,269 INFO L276 IsEmpty]: Start isEmpty. Operand 8877 states and 39872 transitions. [2020-09-15 00:23:46,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-15 00:23:46,272 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:23:46,272 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:23:46,272 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2020-09-15 00:23:46,272 INFO L427 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]=== [2020-09-15 00:23:46,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:23:46,272 INFO L82 PathProgramCache]: Analyzing trace with hash 1446514851, now seen corresponding path program 6 times [2020-09-15 00:23:46,273 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:23:46,273 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532998338] [2020-09-15 00:23:46,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:23:46,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:23:46,363 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-15 00:23:46,363 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532998338] [2020-09-15 00:23:46,363 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:23:46,364 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-15 00:23:46,364 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756456313] [2020-09-15 00:23:46,364 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-15 00:23:46,364 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:23:46,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-15 00:23:46,365 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-15 00:23:46,365 INFO L87 Difference]: Start difference. First operand 8877 states and 39872 transitions. Second operand 9 states. [2020-09-15 00:23:47,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:23:47,204 INFO L93 Difference]: Finished difference Result 29856 states and 115140 transitions. [2020-09-15 00:23:47,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:23:47,205 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-09-15 00:23:47,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:23:47,300 INFO L225 Difference]: With dead ends: 29856 [2020-09-15 00:23:47,300 INFO L226 Difference]: Without dead ends: 29823 [2020-09-15 00:23:47,300 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-09-15 00:23:47,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29823 states. [2020-09-15 00:23:47,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29823 to 8560. [2020-09-15 00:23:47,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8560 states. [2020-09-15 00:23:47,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8560 states to 8560 states and 38495 transitions. [2020-09-15 00:23:47,711 INFO L78 Accepts]: Start accepts. Automaton has 8560 states and 38495 transitions. Word has length 25 [2020-09-15 00:23:47,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:23:47,711 INFO L479 AbstractCegarLoop]: Abstraction has 8560 states and 38495 transitions. [2020-09-15 00:23:47,711 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-15 00:23:47,711 INFO L276 IsEmpty]: Start isEmpty. Operand 8560 states and 38495 transitions. [2020-09-15 00:23:47,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-09-15 00:23:47,714 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:23:47,714 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:23:47,714 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2020-09-15 00:23:47,715 INFO L427 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]=== [2020-09-15 00:23:47,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:23:47,715 INFO L82 PathProgramCache]: Analyzing trace with hash -110415564, now seen corresponding path program 1 times [2020-09-15 00:23:47,715 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:23:47,715 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901525837] [2020-09-15 00:23:47,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:23:47,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-15 00:23:47,725 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-15 00:23:47,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-15 00:23:47,736 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-15 00:23:47,744 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-09-15 00:23:47,745 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-15 00:23:47,745 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2020-09-15 00:23:47,745 WARN L363 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2020-09-15 00:23:47,746 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2020-09-15 00:23:47,760 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:47,760 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:47,760 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:47,760 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:47,761 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:47,761 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:47,761 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:47,761 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:47,761 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:47,762 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread6of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:47,762 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread6of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:47,762 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:47,762 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:47,762 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:47,762 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:47,762 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:47,763 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread6of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:47,763 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread6of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:47,763 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:47,763 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:47,763 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:47,763 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:47,763 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:47,763 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:47,764 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:47,764 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:47,764 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:47,764 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:47,764 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:47,764 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:47,764 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:47,765 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:47,765 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:47,765 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:47,765 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:47,765 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:47,765 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:47,766 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:47,766 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:47,766 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:47,766 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:47,766 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:47,766 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:47,766 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:47,766 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:47,767 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:47,767 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:47,767 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:47,767 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:47,767 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:47,767 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:47,767 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:47,768 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:47,768 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:47,768 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:47,768 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:47,768 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:47,768 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:47,768 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:47,769 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:47,769 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:47,769 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:47,769 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:47,769 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:47,769 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:47,769 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:47,770 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:47,770 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:47,770 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:47,770 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:47,770 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:47,770 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:47,770 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:47,771 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:47,771 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:47,771 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:47,771 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:47,772 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:47,772 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:47,772 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:47,772 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:47,772 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:47,772 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:47,773 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:47,773 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:47,773 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:47,773 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:47,773 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:47,773 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:47,773 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:47,773 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:47,774 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:47,774 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:47,774 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:47,774 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:47,774 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:47,774 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:47,774 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:47,774 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:47,775 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:47,775 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:47,775 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:47,775 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:47,775 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:47,775 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:47,775 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:47,776 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:47,776 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:47,776 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:47,776 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:47,776 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:47,776 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:47,776 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:47,777 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:47,777 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:47,777 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:47,777 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:47,777 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:47,777 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:47,777 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:47,778 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:47,778 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:47,778 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:47,778 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:47,778 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:47,778 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:47,779 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:47,779 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:47,779 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:47,779 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:47,779 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:47,780 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:47,780 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:47,781 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:47,781 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:47,781 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:47,782 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:47,782 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:47,782 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:47,782 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:47,783 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:47,784 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:47,784 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:47,784 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:47,784 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:47,784 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:47,785 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:47,785 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:47,786 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:47,786 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:47,786 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:47,787 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread6of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:47,787 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread6of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:47,787 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:47,787 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:47,788 WARN L313 ript$VariableManager]: TermVariabe thr2Thread6of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:47,789 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:47,789 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:47,789 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:47,789 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:47,789 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:47,789 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:47,790 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:47,791 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:47,791 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:47,791 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:47,791 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:47,791 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:47,792 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:47,792 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:47,792 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:47,793 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:47,793 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:47,793 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:47,794 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:47,794 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:47,794 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:47,794 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:47,795 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:47,795 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:47,796 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:47,796 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:47,796 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:47,796 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:47,796 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:47,796 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:47,797 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:47,798 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:47,798 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:47,798 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:47,798 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:47,798 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 00:23:47,799 INFO L251 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2020-09-15 00:23:47,799 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-15 00:23:47,800 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-15 00:23:47,800 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-09-15 00:23:47,800 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-15 00:23:47,800 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-15 00:23:47,800 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-15 00:23:47,800 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-15 00:23:47,800 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-15 00:23:47,802 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 160 places, 141 transitions, 402 flow [2020-09-15 00:23:47,802 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 160 places, 141 transitions, 402 flow [2020-09-15 00:23:47,819 INFO L129 PetriNetUnfolder]: 8/171 cut-off events. [2020-09-15 00:23:47,819 INFO L130 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2020-09-15 00:23:47,820 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. [2020-09-15 00:23:47,826 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 160 places, 141 transitions, 402 flow [2020-09-15 00:23:47,844 INFO L129 PetriNetUnfolder]: 8/171 cut-off events. [2020-09-15 00:23:47,844 INFO L130 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2020-09-15 00:23:47,846 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. [2020-09-15 00:23:47,862 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 3612 [2020-09-15 00:23:47,862 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-09-15 00:23:49,934 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 60 [2020-09-15 00:23:50,276 INFO L206 etLargeBlockEncoding]: Checked pairs total: 4226 [2020-09-15 00:23:50,276 INFO L214 etLargeBlockEncoding]: Total number of compositions: 127 [2020-09-15 00:23:50,276 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 71 places, 45 transitions, 210 flow [2020-09-15 00:23:51,927 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 18584 states. [2020-09-15 00:23:51,928 INFO L276 IsEmpty]: Start isEmpty. Operand 18584 states. [2020-09-15 00:23:51,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-09-15 00:23:51,928 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:23:51,928 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-09-15 00:23:51,928 INFO L427 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]=== [2020-09-15 00:23:51,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:23:51,929 INFO L82 PathProgramCache]: Analyzing trace with hash 1291919, now seen corresponding path program 1 times [2020-09-15 00:23:51,929 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:23:51,929 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762054680] [2020-09-15 00:23:51,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:23:51,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:23:51,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-15 00:23:51,944 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762054680] [2020-09-15 00:23:51,944 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:23:51,945 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-15 00:23:51,945 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427432092] [2020-09-15 00:23:51,945 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-15 00:23:51,945 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:23:51,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-15 00:23:51,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-15 00:23:51,945 INFO L87 Difference]: Start difference. First operand 18584 states. Second operand 3 states. [2020-09-15 00:23:52,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:23:52,093 INFO L93 Difference]: Finished difference Result 17885 states and 92755 transitions. [2020-09-15 00:23:52,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-15 00:23:52,094 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-09-15 00:23:52,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:23:52,145 INFO L225 Difference]: With dead ends: 17885 [2020-09-15 00:23:52,146 INFO L226 Difference]: Without dead ends: 16791 [2020-09-15 00:23:52,146 INFO L675 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 [2020-09-15 00:23:52,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16791 states. [2020-09-15 00:23:52,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16791 to 16791. [2020-09-15 00:23:52,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16791 states. [2020-09-15 00:23:52,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16791 states to 16791 states and 86558 transitions. [2020-09-15 00:23:52,895 INFO L78 Accepts]: Start accepts. Automaton has 16791 states and 86558 transitions. Word has length 3 [2020-09-15 00:23:52,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:23:52,895 INFO L479 AbstractCegarLoop]: Abstraction has 16791 states and 86558 transitions. [2020-09-15 00:23:52,895 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-15 00:23:52,895 INFO L276 IsEmpty]: Start isEmpty. Operand 16791 states and 86558 transitions. [2020-09-15 00:23:52,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-09-15 00:23:52,895 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:23:52,895 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:23:52,896 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2020-09-15 00:23:52,896 INFO L427 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]=== [2020-09-15 00:23:52,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:23:52,896 INFO L82 PathProgramCache]: Analyzing trace with hash -1124534846, now seen corresponding path program 1 times [2020-09-15 00:23:52,896 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:23:52,896 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330750691] [2020-09-15 00:23:52,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:23:52,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:23:52,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-15 00:23:52,932 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330750691] [2020-09-15 00:23:52,932 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:23:52,932 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-15 00:23:52,933 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788571311] [2020-09-15 00:23:52,933 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-15 00:23:52,933 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:23:52,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-15 00:23:52,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-15 00:23:52,933 INFO L87 Difference]: Start difference. First operand 16791 states and 86558 transitions. Second operand 5 states. [2020-09-15 00:23:53,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:23:53,190 INFO L93 Difference]: Finished difference Result 30985 states and 150574 transitions. [2020-09-15 00:23:53,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-15 00:23:53,191 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-09-15 00:23:53,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:23:53,279 INFO L225 Difference]: With dead ends: 30985 [2020-09-15 00:23:53,279 INFO L226 Difference]: Without dead ends: 30977 [2020-09-15 00:23:53,279 INFO L675 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 [2020-09-15 00:23:53,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30977 states. [2020-09-15 00:23:54,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30977 to 19868. [2020-09-15 00:23:54,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19868 states. [2020-09-15 00:23:56,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19868 states to 19868 states and 103363 transitions. [2020-09-15 00:23:56,381 INFO L78 Accepts]: Start accepts. Automaton has 19868 states and 103363 transitions. Word has length 9 [2020-09-15 00:23:56,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:23:56,382 INFO L479 AbstractCegarLoop]: Abstraction has 19868 states and 103363 transitions. [2020-09-15 00:23:56,382 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-15 00:23:56,382 INFO L276 IsEmpty]: Start isEmpty. Operand 19868 states and 103363 transitions. [2020-09-15 00:23:56,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-15 00:23:56,382 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:23:56,382 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:23:56,382 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2020-09-15 00:23:56,382 INFO L427 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]=== [2020-09-15 00:23:56,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:23:56,383 INFO L82 PathProgramCache]: Analyzing trace with hash -696216523, now seen corresponding path program 1 times [2020-09-15 00:23:56,383 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:23:56,383 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662418554] [2020-09-15 00:23:56,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:23:56,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:23:56,418 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-15 00:23:56,418 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662418554] [2020-09-15 00:23:56,418 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:23:56,418 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-15 00:23:56,419 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297408601] [2020-09-15 00:23:56,419 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-15 00:23:56,419 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:23:56,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-15 00:23:56,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-15 00:23:56,420 INFO L87 Difference]: Start difference. First operand 19868 states and 103363 transitions. Second operand 5 states. [2020-09-15 00:23:56,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:23:56,692 INFO L93 Difference]: Finished difference Result 36296 states and 178836 transitions. [2020-09-15 00:23:56,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-15 00:23:56,693 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-09-15 00:23:56,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:23:56,796 INFO L225 Difference]: With dead ends: 36296 [2020-09-15 00:23:56,796 INFO L226 Difference]: Without dead ends: 36280 [2020-09-15 00:23:56,796 INFO L675 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 [2020-09-15 00:23:57,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36280 states. [2020-09-15 00:23:57,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36280 to 23806. [2020-09-15 00:23:57,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23806 states. [2020-09-15 00:23:58,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23806 states to 23806 states and 125455 transitions. [2020-09-15 00:23:58,026 INFO L78 Accepts]: Start accepts. Automaton has 23806 states and 125455 transitions. Word has length 13 [2020-09-15 00:23:58,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:23:58,026 INFO L479 AbstractCegarLoop]: Abstraction has 23806 states and 125455 transitions. [2020-09-15 00:23:58,026 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-15 00:23:58,026 INFO L276 IsEmpty]: Start isEmpty. Operand 23806 states and 125455 transitions. [2020-09-15 00:23:58,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-15 00:23:58,027 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:23:58,027 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:23:58,027 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2020-09-15 00:23:58,027 INFO L427 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]=== [2020-09-15 00:23:58,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:23:58,027 INFO L82 PathProgramCache]: Analyzing trace with hash -2123666531, now seen corresponding path program 1 times [2020-09-15 00:23:58,028 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:23:58,028 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345738386] [2020-09-15 00:23:58,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:23:58,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:23:58,081 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-15 00:23:58,082 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345738386] [2020-09-15 00:23:58,082 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1399714592] [2020-09-15 00:23:58,082 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 [2020-09-15 00:23:58,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:23:58,199 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 6 conjunts are in the unsatisfiable core [2020-09-15 00:23:58,200 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:23:58,222 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-15 00:23:58,223 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:23:58,223 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-09-15 00:23:58,223 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584145299] [2020-09-15 00:23:58,223 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-15 00:23:58,223 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:23:58,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-15 00:23:58,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-09-15 00:23:58,224 INFO L87 Difference]: Start difference. First operand 23806 states and 125455 transitions. Second operand 9 states. [2020-09-15 00:23:58,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:23:58,786 INFO L93 Difference]: Finished difference Result 56720 states and 262685 transitions. [2020-09-15 00:23:58,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-15 00:23:58,786 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 15 [2020-09-15 00:23:58,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:23:58,992 INFO L225 Difference]: With dead ends: 56720 [2020-09-15 00:23:58,992 INFO L226 Difference]: Without dead ends: 56704 [2020-09-15 00:23:58,992 INFO L675 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 [2020-09-15 00:23:59,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56704 states. [2020-09-15 00:24:02,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56704 to 23629. [2020-09-15 00:24:02,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23629 states. [2020-09-15 00:24:02,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23629 states to 23629 states and 124418 transitions. [2020-09-15 00:24:02,605 INFO L78 Accepts]: Start accepts. Automaton has 23629 states and 124418 transitions. Word has length 15 [2020-09-15 00:24:02,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:24:02,606 INFO L479 AbstractCegarLoop]: Abstraction has 23629 states and 124418 transitions. [2020-09-15 00:24:02,606 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-15 00:24:02,606 INFO L276 IsEmpty]: Start isEmpty. Operand 23629 states and 124418 transitions. [2020-09-15 00:24:02,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-15 00:24:02,606 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:24:02,606 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:24:02,807 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable78 [2020-09-15 00:24:02,807 INFO L427 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]=== [2020-09-15 00:24:02,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:24:02,808 INFO L82 PathProgramCache]: Analyzing trace with hash 950817645, now seen corresponding path program 2 times [2020-09-15 00:24:02,808 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:24:02,808 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303249187] [2020-09-15 00:24:02,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:24:02,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:24:02,860 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-15 00:24:02,861 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303249187] [2020-09-15 00:24:02,861 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:24:02,861 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-15 00:24:02,861 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53061525] [2020-09-15 00:24:02,862 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-15 00:24:02,862 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:24:02,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-15 00:24:02,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-15 00:24:02,862 INFO L87 Difference]: Start difference. First operand 23629 states and 124418 transitions. Second operand 7 states. [2020-09-15 00:24:03,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:24:03,424 INFO L93 Difference]: Finished difference Result 58078 states and 269185 transitions. [2020-09-15 00:24:03,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-15 00:24:03,425 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-09-15 00:24:03,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:24:03,607 INFO L225 Difference]: With dead ends: 58078 [2020-09-15 00:24:03,607 INFO L226 Difference]: Without dead ends: 58061 [2020-09-15 00:24:03,607 INFO L675 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 [2020-09-15 00:24:04,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58061 states. [2020-09-15 00:24:04,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58061 to 23109. [2020-09-15 00:24:04,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23109 states. [2020-09-15 00:24:05,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23109 states to 23109 states and 121651 transitions. [2020-09-15 00:24:05,083 INFO L78 Accepts]: Start accepts. Automaton has 23109 states and 121651 transitions. Word has length 15 [2020-09-15 00:24:05,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:24:05,083 INFO L479 AbstractCegarLoop]: Abstraction has 23109 states and 121651 transitions. [2020-09-15 00:24:05,083 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-15 00:24:05,083 INFO L276 IsEmpty]: Start isEmpty. Operand 23109 states and 121651 transitions. [2020-09-15 00:24:05,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-15 00:24:05,083 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:24:05,084 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:24:05,084 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2020-09-15 00:24:05,084 INFO L427 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]=== [2020-09-15 00:24:05,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:24:05,084 INFO L82 PathProgramCache]: Analyzing trace with hash -2120658652, now seen corresponding path program 1 times [2020-09-15 00:24:05,084 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:24:05,084 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275659434] [2020-09-15 00:24:05,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:24:05,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:24:05,127 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-15 00:24:05,127 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275659434] [2020-09-15 00:24:05,128 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:24:05,128 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-15 00:24:05,128 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546534365] [2020-09-15 00:24:05,128 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-15 00:24:05,128 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:24:05,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-15 00:24:05,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-15 00:24:05,129 INFO L87 Difference]: Start difference. First operand 23109 states and 121651 transitions. Second operand 5 states. [2020-09-15 00:24:05,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:24:05,445 INFO L93 Difference]: Finished difference Result 41885 states and 209629 transitions. [2020-09-15 00:24:05,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-15 00:24:05,446 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-09-15 00:24:05,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:24:05,564 INFO L225 Difference]: With dead ends: 41885 [2020-09-15 00:24:05,564 INFO L226 Difference]: Without dead ends: 41856 [2020-09-15 00:24:05,564 INFO L675 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 [2020-09-15 00:24:06,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41856 states. [2020-09-15 00:24:07,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41856 to 28237. [2020-09-15 00:24:07,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28237 states. [2020-09-15 00:24:07,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28237 states to 28237 states and 150261 transitions. [2020-09-15 00:24:07,516 INFO L78 Accepts]: Start accepts. Automaton has 28237 states and 150261 transitions. Word has length 17 [2020-09-15 00:24:07,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:24:07,516 INFO L479 AbstractCegarLoop]: Abstraction has 28237 states and 150261 transitions. [2020-09-15 00:24:07,516 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-15 00:24:07,516 INFO L276 IsEmpty]: Start isEmpty. Operand 28237 states and 150261 transitions. [2020-09-15 00:24:07,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-15 00:24:07,517 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:24:07,517 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:24:07,517 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2020-09-15 00:24:07,517 INFO L427 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]=== [2020-09-15 00:24:07,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:24:07,517 INFO L82 PathProgramCache]: Analyzing trace with hash 269605662, now seen corresponding path program 1 times [2020-09-15 00:24:07,518 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:24:07,518 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111867888] [2020-09-15 00:24:07,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:24:07,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:24:07,576 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-15 00:24:07,576 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111867888] [2020-09-15 00:24:07,577 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [368300642] [2020-09-15 00:24:07,577 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 [2020-09-15 00:24:07,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:24:07,661 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 6 conjunts are in the unsatisfiable core [2020-09-15 00:24:07,662 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:24:07,679 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-15 00:24:07,679 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:24:07,680 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-09-15 00:24:07,680 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431865917] [2020-09-15 00:24:07,680 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-15 00:24:07,680 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:24:07,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-15 00:24:07,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-09-15 00:24:07,681 INFO L87 Difference]: Start difference. First operand 28237 states and 150261 transitions. Second operand 9 states. [2020-09-15 00:24:08,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:24:08,274 INFO L93 Difference]: Finished difference Result 66831 states and 314874 transitions. [2020-09-15 00:24:08,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-15 00:24:08,274 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 19 [2020-09-15 00:24:08,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:24:08,462 INFO L225 Difference]: With dead ends: 66831 [2020-09-15 00:24:08,462 INFO L226 Difference]: Without dead ends: 66807 [2020-09-15 00:24:08,462 INFO L675 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 [2020-09-15 00:24:09,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66807 states. [2020-09-15 00:24:10,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66807 to 28673. [2020-09-15 00:24:10,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28673 states. [2020-09-15 00:24:10,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28673 states to 28673 states and 152375 transitions. [2020-09-15 00:24:10,158 INFO L78 Accepts]: Start accepts. Automaton has 28673 states and 152375 transitions. Word has length 19 [2020-09-15 00:24:10,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:24:10,158 INFO L479 AbstractCegarLoop]: Abstraction has 28673 states and 152375 transitions. [2020-09-15 00:24:10,158 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-15 00:24:10,158 INFO L276 IsEmpty]: Start isEmpty. Operand 28673 states and 152375 transitions. [2020-09-15 00:24:10,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-15 00:24:10,159 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:24:10,159 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:24:10,373 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable81 [2020-09-15 00:24:10,373 INFO L427 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]=== [2020-09-15 00:24:10,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:24:10,374 INFO L82 PathProgramCache]: Analyzing trace with hash -2138468196, now seen corresponding path program 2 times [2020-09-15 00:24:10,374 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:24:10,374 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284391094] [2020-09-15 00:24:10,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:24:10,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:24:10,434 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-15 00:24:10,434 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284391094] [2020-09-15 00:24:10,435 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:24:10,435 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-15 00:24:10,435 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625386753] [2020-09-15 00:24:10,435 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-15 00:24:10,436 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:24:10,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-15 00:24:10,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-15 00:24:10,436 INFO L87 Difference]: Start difference. First operand 28673 states and 152375 transitions. Second operand 7 states. [2020-09-15 00:24:11,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:24:11,550 INFO L93 Difference]: Finished difference Result 68538 states and 323189 transitions. [2020-09-15 00:24:11,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-15 00:24:11,551 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-09-15 00:24:11,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:24:11,749 INFO L225 Difference]: With dead ends: 68538 [2020-09-15 00:24:11,749 INFO L226 Difference]: Without dead ends: 68505 [2020-09-15 00:24:11,749 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-09-15 00:24:12,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68505 states. [2020-09-15 00:24:13,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68505 to 28061. [2020-09-15 00:24:13,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28061 states. [2020-09-15 00:24:13,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28061 states to 28061 states and 149307 transitions. [2020-09-15 00:24:13,466 INFO L78 Accepts]: Start accepts. Automaton has 28061 states and 149307 transitions. Word has length 19 [2020-09-15 00:24:13,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:24:13,466 INFO L479 AbstractCegarLoop]: Abstraction has 28061 states and 149307 transitions. [2020-09-15 00:24:13,466 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-15 00:24:13,466 INFO L276 IsEmpty]: Start isEmpty. Operand 28061 states and 149307 transitions. [2020-09-15 00:24:13,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-15 00:24:13,467 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:24:13,467 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:24:13,467 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2020-09-15 00:24:13,468 INFO L427 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]=== [2020-09-15 00:24:13,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:24:13,468 INFO L82 PathProgramCache]: Analyzing trace with hash -2138444729, now seen corresponding path program 1 times [2020-09-15 00:24:13,468 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:24:13,468 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033469452] [2020-09-15 00:24:13,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:24:13,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:24:13,523 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-15 00:24:13,523 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033469452] [2020-09-15 00:24:13,523 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:24:13,523 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-15 00:24:13,524 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847735584] [2020-09-15 00:24:13,524 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-15 00:24:13,524 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:24:13,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-15 00:24:13,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-15 00:24:13,525 INFO L87 Difference]: Start difference. First operand 28061 states and 149307 transitions. Second operand 7 states. [2020-09-15 00:24:14,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:24:14,150 INFO L93 Difference]: Finished difference Result 69070 states and 326154 transitions. [2020-09-15 00:24:14,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-15 00:24:14,150 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-09-15 00:24:14,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:24:14,352 INFO L225 Difference]: With dead ends: 69070 [2020-09-15 00:24:14,352 INFO L226 Difference]: Without dead ends: 69037 [2020-09-15 00:24:14,352 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-09-15 00:24:15,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69037 states. [2020-09-15 00:24:16,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69037 to 28938. [2020-09-15 00:24:16,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28938 states. [2020-09-15 00:24:16,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28938 states to 28938 states and 153909 transitions. [2020-09-15 00:24:16,715 INFO L78 Accepts]: Start accepts. Automaton has 28938 states and 153909 transitions. Word has length 19 [2020-09-15 00:24:16,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:24:16,716 INFO L479 AbstractCegarLoop]: Abstraction has 28938 states and 153909 transitions. [2020-09-15 00:24:16,716 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-15 00:24:16,716 INFO L276 IsEmpty]: Start isEmpty. Operand 28938 states and 153909 transitions. [2020-09-15 00:24:16,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-15 00:24:16,716 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:24:16,717 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:24:16,717 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2020-09-15 00:24:16,717 INFO L427 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]=== [2020-09-15 00:24:16,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:24:16,717 INFO L82 PathProgramCache]: Analyzing trace with hash -2117255609, now seen corresponding path program 2 times [2020-09-15 00:24:16,717 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:24:16,718 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329289101] [2020-09-15 00:24:16,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:24:16,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:24:16,769 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-15 00:24:16,770 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329289101] [2020-09-15 00:24:16,770 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:24:16,770 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-15 00:24:16,770 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728949264] [2020-09-15 00:24:16,770 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-15 00:24:16,770 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:24:16,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-15 00:24:16,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-15 00:24:16,771 INFO L87 Difference]: Start difference. First operand 28938 states and 153909 transitions. Second operand 7 states. [2020-09-15 00:24:17,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:24:17,380 INFO L93 Difference]: Finished difference Result 70096 states and 331298 transitions. [2020-09-15 00:24:17,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-15 00:24:17,380 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-09-15 00:24:17,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:24:17,586 INFO L225 Difference]: With dead ends: 70096 [2020-09-15 00:24:17,586 INFO L226 Difference]: Without dead ends: 70063 [2020-09-15 00:24:17,586 INFO L675 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 [2020-09-15 00:24:18,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70063 states. [2020-09-15 00:24:19,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70063 to 29094. [2020-09-15 00:24:19,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29094 states. [2020-09-15 00:24:22,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29094 states to 29094 states and 154883 transitions. [2020-09-15 00:24:22,566 INFO L78 Accepts]: Start accepts. Automaton has 29094 states and 154883 transitions. Word has length 19 [2020-09-15 00:24:22,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:24:22,567 INFO L479 AbstractCegarLoop]: Abstraction has 29094 states and 154883 transitions. [2020-09-15 00:24:22,567 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-15 00:24:22,567 INFO L276 IsEmpty]: Start isEmpty. Operand 29094 states and 154883 transitions. [2020-09-15 00:24:22,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-15 00:24:22,568 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:24:22,568 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:24:22,568 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2020-09-15 00:24:22,568 INFO L427 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]=== [2020-09-15 00:24:22,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:24:22,569 INFO L82 PathProgramCache]: Analyzing trace with hash 1393024961, now seen corresponding path program 1 times [2020-09-15 00:24:22,569 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:24:22,569 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960631160] [2020-09-15 00:24:22,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:24:22,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:24:22,643 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-15 00:24:22,643 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960631160] [2020-09-15 00:24:22,643 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [747786008] [2020-09-15 00:24:22,644 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 [2020-09-15 00:24:22,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:24:22,752 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 8 conjunts are in the unsatisfiable core [2020-09-15 00:24:22,752 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:24:22,777 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-15 00:24:22,777 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:24:22,777 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-09-15 00:24:22,777 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423029916] [2020-09-15 00:24:22,777 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-15 00:24:22,778 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:24:22,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-15 00:24:22,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-09-15 00:24:22,778 INFO L87 Difference]: Start difference. First operand 29094 states and 154883 transitions. Second operand 11 states. [2020-09-15 00:24:24,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:24:24,048 INFO L93 Difference]: Finished difference Result 100731 states and 448596 transitions. [2020-09-15 00:24:24,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:24:24,049 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 21 [2020-09-15 00:24:24,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:24:24,328 INFO L225 Difference]: With dead ends: 100731 [2020-09-15 00:24:24,328 INFO L226 Difference]: Without dead ends: 100715 [2020-09-15 00:24:24,328 INFO L675 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 [2020-09-15 00:24:25,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100715 states. [2020-09-15 00:24:26,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100715 to 28723. [2020-09-15 00:24:26,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28723 states. [2020-09-15 00:24:27,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28723 states to 28723 states and 152772 transitions. [2020-09-15 00:24:27,131 INFO L78 Accepts]: Start accepts. Automaton has 28723 states and 152772 transitions. Word has length 21 [2020-09-15 00:24:27,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:24:27,132 INFO L479 AbstractCegarLoop]: Abstraction has 28723 states and 152772 transitions. [2020-09-15 00:24:27,132 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-15 00:24:27,132 INFO L276 IsEmpty]: Start isEmpty. Operand 28723 states and 152772 transitions. [2020-09-15 00:24:27,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-15 00:24:27,133 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:24:27,133 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:24:27,333 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85,34 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:24:27,334 INFO L427 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]=== [2020-09-15 00:24:27,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:24:27,334 INFO L82 PathProgramCache]: Analyzing trace with hash 1414214081, now seen corresponding path program 2 times [2020-09-15 00:24:27,334 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:24:27,335 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059469567] [2020-09-15 00:24:27,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:24:27,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:24:27,415 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-15 00:24:27,416 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059469567] [2020-09-15 00:24:27,416 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [120758646] [2020-09-15 00:24:27,416 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 [2020-09-15 00:24:27,537 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-09-15 00:24:27,537 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-15 00:24:27,538 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 8 conjunts are in the unsatisfiable core [2020-09-15 00:24:27,538 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:24:27,563 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-15 00:24:27,563 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:24:27,563 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-09-15 00:24:27,564 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554457860] [2020-09-15 00:24:27,564 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-15 00:24:27,564 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:24:27,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-15 00:24:27,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-09-15 00:24:27,564 INFO L87 Difference]: Start difference. First operand 28723 states and 152772 transitions. Second operand 11 states. [2020-09-15 00:24:28,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:24:28,819 INFO L93 Difference]: Finished difference Result 99884 states and 444368 transitions. [2020-09-15 00:24:28,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:24:28,820 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 21 [2020-09-15 00:24:28,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:24:29,111 INFO L225 Difference]: With dead ends: 99884 [2020-09-15 00:24:29,111 INFO L226 Difference]: Without dead ends: 99863 [2020-09-15 00:24:29,112 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 253 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-09-15 00:24:30,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99863 states. [2020-09-15 00:24:31,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99863 to 28343. [2020-09-15 00:24:31,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28343 states. [2020-09-15 00:24:31,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28343 states to 28343 states and 150639 transitions. [2020-09-15 00:24:31,870 INFO L78 Accepts]: Start accepts. Automaton has 28343 states and 150639 transitions. Word has length 21 [2020-09-15 00:24:31,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:24:31,870 INFO L479 AbstractCegarLoop]: Abstraction has 28343 states and 150639 transitions. [2020-09-15 00:24:31,870 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-15 00:24:31,870 INFO L276 IsEmpty]: Start isEmpty. Operand 28343 states and 150639 transitions. [2020-09-15 00:24:31,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-15 00:24:31,871 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:24:31,871 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:24:32,072 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable86 [2020-09-15 00:24:32,072 INFO L427 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]=== [2020-09-15 00:24:32,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:24:32,073 INFO L82 PathProgramCache]: Analyzing trace with hash -2073547329, now seen corresponding path program 3 times [2020-09-15 00:24:32,073 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:24:32,073 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441786704] [2020-09-15 00:24:32,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:24:32,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:24:32,158 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-15 00:24:32,158 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441786704] [2020-09-15 00:24:32,158 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:24:32,159 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-15 00:24:32,159 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783430160] [2020-09-15 00:24:32,159 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-15 00:24:32,159 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:24:32,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-15 00:24:32,160 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-15 00:24:32,160 INFO L87 Difference]: Start difference. First operand 28343 states and 150639 transitions. Second operand 9 states. [2020-09-15 00:24:33,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:24:33,399 INFO L93 Difference]: Finished difference Result 100063 states and 445271 transitions. [2020-09-15 00:24:33,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:24:33,400 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-09-15 00:24:33,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:24:33,711 INFO L225 Difference]: With dead ends: 100063 [2020-09-15 00:24:33,711 INFO L226 Difference]: Without dead ends: 100047 [2020-09-15 00:24:33,711 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-09-15 00:24:34,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100047 states. [2020-09-15 00:24:38,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100047 to 27662. [2020-09-15 00:24:38,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27662 states. [2020-09-15 00:24:38,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27662 states to 27662 states and 147100 transitions. [2020-09-15 00:24:38,361 INFO L78 Accepts]: Start accepts. Automaton has 27662 states and 147100 transitions. Word has length 21 [2020-09-15 00:24:38,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:24:38,361 INFO L479 AbstractCegarLoop]: Abstraction has 27662 states and 147100 transitions. [2020-09-15 00:24:38,361 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-15 00:24:38,361 INFO L276 IsEmpty]: Start isEmpty. Operand 27662 states and 147100 transitions. [2020-09-15 00:24:38,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-15 00:24:38,362 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:24:38,362 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:24:38,362 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2020-09-15 00:24:38,363 INFO L427 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]=== [2020-09-15 00:24:38,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:24:38,363 INFO L82 PathProgramCache]: Analyzing trace with hash -2051019009, now seen corresponding path program 4 times [2020-09-15 00:24:38,363 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:24:38,363 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806921301] [2020-09-15 00:24:38,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:24:38,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:24:38,442 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-15 00:24:38,442 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806921301] [2020-09-15 00:24:38,442 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:24:38,442 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-15 00:24:38,443 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808993164] [2020-09-15 00:24:38,443 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-15 00:24:38,443 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:24:38,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-15 00:24:38,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-15 00:24:38,444 INFO L87 Difference]: Start difference. First operand 27662 states and 147100 transitions. Second operand 9 states. [2020-09-15 00:24:39,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:24:39,619 INFO L93 Difference]: Finished difference Result 99531 states and 442783 transitions. [2020-09-15 00:24:39,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:24:39,620 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-09-15 00:24:39,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:24:39,944 INFO L225 Difference]: With dead ends: 99531 [2020-09-15 00:24:39,944 INFO L226 Difference]: Without dead ends: 99510 [2020-09-15 00:24:39,944 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-09-15 00:24:40,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99510 states. [2020-09-15 00:24:42,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99510 to 27286. [2020-09-15 00:24:42,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27286 states. [2020-09-15 00:24:42,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27286 states to 27286 states and 144979 transitions. [2020-09-15 00:24:42,642 INFO L78 Accepts]: Start accepts. Automaton has 27286 states and 144979 transitions. Word has length 21 [2020-09-15 00:24:42,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:24:42,642 INFO L479 AbstractCegarLoop]: Abstraction has 27286 states and 144979 transitions. [2020-09-15 00:24:42,642 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-15 00:24:42,642 INFO L276 IsEmpty]: Start isEmpty. Operand 27286 states and 144979 transitions. [2020-09-15 00:24:42,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-15 00:24:42,643 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:24:42,643 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:24:42,644 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2020-09-15 00:24:42,644 INFO L427 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]=== [2020-09-15 00:24:42,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:24:42,644 INFO L82 PathProgramCache]: Analyzing trace with hash 102150333, now seen corresponding path program 1 times [2020-09-15 00:24:42,644 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:24:42,644 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612946803] [2020-09-15 00:24:42,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:24:42,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:24:42,685 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-15 00:24:42,686 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612946803] [2020-09-15 00:24:42,686 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:24:42,686 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-15 00:24:42,686 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840641665] [2020-09-15 00:24:42,687 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-15 00:24:42,687 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:24:42,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-15 00:24:42,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-15 00:24:42,688 INFO L87 Difference]: Start difference. First operand 27286 states and 144979 transitions. Second operand 5 states. [2020-09-15 00:24:43,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:24:43,040 INFO L93 Difference]: Finished difference Result 49004 states and 248721 transitions. [2020-09-15 00:24:43,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-15 00:24:43,041 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-09-15 00:24:43,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:24:43,184 INFO L225 Difference]: With dead ends: 49004 [2020-09-15 00:24:43,184 INFO L226 Difference]: Without dead ends: 48958 [2020-09-15 00:24:43,184 INFO L675 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 [2020-09-15 00:24:43,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48958 states. [2020-09-15 00:24:45,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48958 to 33985. [2020-09-15 00:24:45,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33985 states. [2020-09-15 00:24:45,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33985 states to 33985 states and 181777 transitions. [2020-09-15 00:24:45,291 INFO L78 Accepts]: Start accepts. Automaton has 33985 states and 181777 transitions. Word has length 21 [2020-09-15 00:24:45,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:24:45,292 INFO L479 AbstractCegarLoop]: Abstraction has 33985 states and 181777 transitions. [2020-09-15 00:24:45,292 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-15 00:24:45,292 INFO L276 IsEmpty]: Start isEmpty. Operand 33985 states and 181777 transitions. [2020-09-15 00:24:45,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-15 00:24:45,293 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:24:45,293 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:24:45,293 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2020-09-15 00:24:45,293 INFO L427 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]=== [2020-09-15 00:24:45,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:24:45,293 INFO L82 PathProgramCache]: Analyzing trace with hash 1130516927, now seen corresponding path program 5 times [2020-09-15 00:24:45,293 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:24:45,294 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478607381] [2020-09-15 00:24:45,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:24:45,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:24:45,373 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-15 00:24:45,373 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478607381] [2020-09-15 00:24:45,374 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:24:45,374 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-15 00:24:45,374 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23064708] [2020-09-15 00:24:45,375 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-15 00:24:45,375 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:24:45,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-15 00:24:45,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-15 00:24:45,375 INFO L87 Difference]: Start difference. First operand 33985 states and 181777 transitions. Second operand 9 states. [2020-09-15 00:24:46,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:24:46,686 INFO L93 Difference]: Finished difference Result 115592 states and 523747 transitions. [2020-09-15 00:24:46,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:24:46,687 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-09-15 00:24:46,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:24:47,075 INFO L225 Difference]: With dead ends: 115592 [2020-09-15 00:24:47,075 INFO L226 Difference]: Without dead ends: 115567 [2020-09-15 00:24:47,075 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-09-15 00:24:48,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115567 states. [2020-09-15 00:24:52,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115567 to 33074. [2020-09-15 00:24:52,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33074 states. [2020-09-15 00:24:52,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33074 states to 33074 states and 176935 transitions. [2020-09-15 00:24:52,336 INFO L78 Accepts]: Start accepts. Automaton has 33074 states and 176935 transitions. Word has length 21 [2020-09-15 00:24:52,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:24:52,336 INFO L479 AbstractCegarLoop]: Abstraction has 33074 states and 176935 transitions. [2020-09-15 00:24:52,337 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-15 00:24:52,337 INFO L276 IsEmpty]: Start isEmpty. Operand 33074 states and 176935 transitions. [2020-09-15 00:24:52,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-15 00:24:52,338 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:24:52,338 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:24:52,338 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2020-09-15 00:24:52,338 INFO L427 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]=== [2020-09-15 00:24:52,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:24:52,338 INFO L82 PathProgramCache]: Analyzing trace with hash 1131856127, now seen corresponding path program 6 times [2020-09-15 00:24:52,338 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:24:52,338 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515828558] [2020-09-15 00:24:52,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:24:52,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:24:52,419 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-15 00:24:52,419 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515828558] [2020-09-15 00:24:52,420 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:24:52,420 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-15 00:24:52,420 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276094746] [2020-09-15 00:24:52,420 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-15 00:24:52,421 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:24:52,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-15 00:24:52,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-15 00:24:52,421 INFO L87 Difference]: Start difference. First operand 33074 states and 176935 transitions. Second operand 9 states. [2020-09-15 00:24:53,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:24:53,731 INFO L93 Difference]: Finished difference Result 114402 states and 517732 transitions. [2020-09-15 00:24:53,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:24:53,732 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-09-15 00:24:53,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:24:54,099 INFO L225 Difference]: With dead ends: 114402 [2020-09-15 00:24:54,100 INFO L226 Difference]: Without dead ends: 114371 [2020-09-15 00:24:54,100 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-09-15 00:24:56,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114371 states. [2020-09-15 00:24:57,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114371 to 31960. [2020-09-15 00:24:57,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31960 states. [2020-09-15 00:24:57,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31960 states to 31960 states and 171209 transitions. [2020-09-15 00:24:57,233 INFO L78 Accepts]: Start accepts. Automaton has 31960 states and 171209 transitions. Word has length 21 [2020-09-15 00:24:57,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:24:57,233 INFO L479 AbstractCegarLoop]: Abstraction has 31960 states and 171209 transitions. [2020-09-15 00:24:57,233 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-15 00:24:57,233 INFO L276 IsEmpty]: Start isEmpty. Operand 31960 states and 171209 transitions. [2020-09-15 00:24:57,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-15 00:24:57,235 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:24:57,235 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:24:57,235 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2020-09-15 00:24:57,235 INFO L427 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]=== [2020-09-15 00:24:57,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:24:57,235 INFO L82 PathProgramCache]: Analyzing trace with hash -1106577557, now seen corresponding path program 1 times [2020-09-15 00:24:57,235 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:24:57,235 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511328442] [2020-09-15 00:24:57,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:24:57,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:24:57,299 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-15 00:24:57,300 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511328442] [2020-09-15 00:24:57,300 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [354252791] [2020-09-15 00:24:57,300 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 [2020-09-15 00:24:57,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:24:57,397 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 6 conjunts are in the unsatisfiable core [2020-09-15 00:24:57,398 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:24:57,418 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-15 00:24:57,419 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:24:57,419 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-09-15 00:24:57,419 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314241612] [2020-09-15 00:24:57,419 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-15 00:24:57,419 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:24:57,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-15 00:24:57,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-09-15 00:24:57,420 INFO L87 Difference]: Start difference. First operand 31960 states and 171209 transitions. Second operand 9 states. [2020-09-15 00:25:00,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:25:00,302 INFO L93 Difference]: Finished difference Result 75380 states and 361389 transitions. [2020-09-15 00:25:00,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-15 00:25:00,303 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 23 [2020-09-15 00:25:00,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:25:00,522 INFO L225 Difference]: With dead ends: 75380 [2020-09-15 00:25:00,522 INFO L226 Difference]: Without dead ends: 75344 [2020-09-15 00:25:00,522 INFO L675 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 [2020-09-15 00:25:01,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75344 states. [2020-09-15 00:25:02,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75344 to 32974. [2020-09-15 00:25:02,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32974 states. [2020-09-15 00:25:02,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32974 states to 32974 states and 176363 transitions. [2020-09-15 00:25:02,587 INFO L78 Accepts]: Start accepts. Automaton has 32974 states and 176363 transitions. Word has length 23 [2020-09-15 00:25:02,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:25:02,587 INFO L479 AbstractCegarLoop]: Abstraction has 32974 states and 176363 transitions. [2020-09-15 00:25:02,587 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-15 00:25:02,587 INFO L276 IsEmpty]: Start isEmpty. Operand 32974 states and 176363 transitions. [2020-09-15 00:25:02,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-15 00:25:02,589 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:25:02,589 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:25:02,789 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92,36 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:25:02,790 INFO L427 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]=== [2020-09-15 00:25:02,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:25:02,790 INFO L82 PathProgramCache]: Analyzing trace with hash 1026706248, now seen corresponding path program 1 times [2020-09-15 00:25:02,791 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:25:02,791 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124867002] [2020-09-15 00:25:02,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:25:02,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:25:02,851 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-15 00:25:02,851 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124867002] [2020-09-15 00:25:02,851 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1743240391] [2020-09-15 00:25:02,851 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 [2020-09-15 00:25:02,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:25:02,970 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 6 conjunts are in the unsatisfiable core [2020-09-15 00:25:02,971 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:25:02,991 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-15 00:25:02,991 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:25:02,991 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-09-15 00:25:02,992 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888142156] [2020-09-15 00:25:02,992 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-15 00:25:02,992 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:25:02,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-15 00:25:02,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-09-15 00:25:02,992 INFO L87 Difference]: Start difference. First operand 32974 states and 176363 transitions. Second operand 9 states. [2020-09-15 00:25:04,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:25:04,332 INFO L93 Difference]: Finished difference Result 79463 states and 381713 transitions. [2020-09-15 00:25:04,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-15 00:25:04,333 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 23 [2020-09-15 00:25:04,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:25:04,579 INFO L225 Difference]: With dead ends: 79463 [2020-09-15 00:25:04,579 INFO L226 Difference]: Without dead ends: 79421 [2020-09-15 00:25:04,580 INFO L675 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 [2020-09-15 00:25:05,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79421 states. [2020-09-15 00:25:06,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79421 to 33977. [2020-09-15 00:25:06,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33977 states. [2020-09-15 00:25:06,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33977 states to 33977 states and 181698 transitions. [2020-09-15 00:25:06,615 INFO L78 Accepts]: Start accepts. Automaton has 33977 states and 181698 transitions. Word has length 23 [2020-09-15 00:25:06,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:25:06,615 INFO L479 AbstractCegarLoop]: Abstraction has 33977 states and 181698 transitions. [2020-09-15 00:25:06,615 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-15 00:25:06,615 INFO L276 IsEmpty]: Start isEmpty. Operand 33977 states and 181698 transitions. [2020-09-15 00:25:06,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-15 00:25:06,617 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:25:06,617 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:25:06,817 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93,37 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:25:06,818 INFO L427 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]=== [2020-09-15 00:25:06,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:25:06,818 INFO L82 PathProgramCache]: Analyzing trace with hash -617779723, now seen corresponding path program 2 times [2020-09-15 00:25:06,818 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:25:06,819 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734364411] [2020-09-15 00:25:06,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:25:06,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:25:06,920 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-15 00:25:06,921 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734364411] [2020-09-15 00:25:06,921 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:25:06,921 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-15 00:25:06,921 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261814506] [2020-09-15 00:25:06,921 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-15 00:25:06,921 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:25:06,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-15 00:25:06,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-15 00:25:06,922 INFO L87 Difference]: Start difference. First operand 33977 states and 181698 transitions. Second operand 7 states. [2020-09-15 00:25:08,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:25:08,203 INFO L93 Difference]: Finished difference Result 80867 states and 388763 transitions. [2020-09-15 00:25:08,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-15 00:25:08,204 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-09-15 00:25:08,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:25:08,479 INFO L225 Difference]: With dead ends: 80867 [2020-09-15 00:25:08,479 INFO L226 Difference]: Without dead ends: 80812 [2020-09-15 00:25:08,479 INFO L675 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 [2020-09-15 00:25:09,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80812 states. [2020-09-15 00:25:10,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80812 to 34223. [2020-09-15 00:25:10,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34223 states. [2020-09-15 00:25:10,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34223 states to 34223 states and 183033 transitions. [2020-09-15 00:25:10,448 INFO L78 Accepts]: Start accepts. Automaton has 34223 states and 183033 transitions. Word has length 23 [2020-09-15 00:25:10,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:25:10,448 INFO L479 AbstractCegarLoop]: Abstraction has 34223 states and 183033 transitions. [2020-09-15 00:25:10,448 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-15 00:25:10,448 INFO L276 IsEmpty]: Start isEmpty. Operand 34223 states and 183033 transitions. [2020-09-15 00:25:10,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-15 00:25:10,450 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:25:10,450 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:25:10,450 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2020-09-15 00:25:10,450 INFO L427 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]=== [2020-09-15 00:25:10,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:25:10,451 INFO L82 PathProgramCache]: Analyzing trace with hash -617778328, now seen corresponding path program 2 times [2020-09-15 00:25:10,451 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:25:10,451 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121972911] [2020-09-15 00:25:10,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:25:10,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:25:10,509 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-15 00:25:10,509 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121972911] [2020-09-15 00:25:10,510 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:25:10,510 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-15 00:25:10,510 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440540862] [2020-09-15 00:25:10,510 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-15 00:25:10,511 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:25:10,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-15 00:25:10,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-15 00:25:10,511 INFO L87 Difference]: Start difference. First operand 34223 states and 183033 transitions. Second operand 7 states. [2020-09-15 00:25:11,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:25:11,640 INFO L93 Difference]: Finished difference Result 80887 states and 388540 transitions. [2020-09-15 00:25:11,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-15 00:25:11,641 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-09-15 00:25:11,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:25:11,876 INFO L225 Difference]: With dead ends: 80887 [2020-09-15 00:25:11,877 INFO L226 Difference]: Without dead ends: 80832 [2020-09-15 00:25:11,877 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-09-15 00:25:12,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80832 states. [2020-09-15 00:25:13,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80832 to 34508. [2020-09-15 00:25:13,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34508 states. [2020-09-15 00:25:13,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34508 states to 34508 states and 184670 transitions. [2020-09-15 00:25:13,804 INFO L78 Accepts]: Start accepts. Automaton has 34508 states and 184670 transitions. Word has length 23 [2020-09-15 00:25:13,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:25:13,804 INFO L479 AbstractCegarLoop]: Abstraction has 34508 states and 184670 transitions. [2020-09-15 00:25:13,804 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-15 00:25:13,804 INFO L276 IsEmpty]: Start isEmpty. Operand 34508 states and 184670 transitions. [2020-09-15 00:25:13,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-15 00:25:13,806 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:25:13,806 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:25:13,806 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2020-09-15 00:25:13,806 INFO L427 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]=== [2020-09-15 00:25:13,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:25:13,806 INFO L82 PathProgramCache]: Analyzing trace with hash -617756256, now seen corresponding path program 1 times [2020-09-15 00:25:13,807 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:25:13,807 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562243459] [2020-09-15 00:25:13,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:25:13,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:25:13,868 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-15 00:25:13,869 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562243459] [2020-09-15 00:25:13,869 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:25:13,869 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-15 00:25:13,870 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075404592] [2020-09-15 00:25:13,870 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-15 00:25:13,870 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:25:13,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-15 00:25:13,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-15 00:25:13,871 INFO L87 Difference]: Start difference. First operand 34508 states and 184670 transitions. Second operand 7 states. [2020-09-15 00:25:14,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:25:14,612 INFO L93 Difference]: Finished difference Result 83313 states and 401031 transitions. [2020-09-15 00:25:14,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-15 00:25:14,612 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-09-15 00:25:14,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:25:15,530 INFO L225 Difference]: With dead ends: 83313 [2020-09-15 00:25:15,530 INFO L226 Difference]: Without dead ends: 83258 [2020-09-15 00:25:15,530 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-09-15 00:25:16,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83258 states. [2020-09-15 00:25:17,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83258 to 36258. [2020-09-15 00:25:17,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36258 states. [2020-09-15 00:25:17,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36258 states to 36258 states and 193887 transitions. [2020-09-15 00:25:17,569 INFO L78 Accepts]: Start accepts. Automaton has 36258 states and 193887 transitions. Word has length 23 [2020-09-15 00:25:17,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:25:17,569 INFO L479 AbstractCegarLoop]: Abstraction has 36258 states and 193887 transitions. [2020-09-15 00:25:17,569 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-15 00:25:17,569 INFO L276 IsEmpty]: Start isEmpty. Operand 36258 states and 193887 transitions. [2020-09-15 00:25:17,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-15 00:25:17,571 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:25:17,571 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:25:17,571 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2020-09-15 00:25:17,572 INFO L427 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]=== [2020-09-15 00:25:17,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:25:17,572 INFO L82 PathProgramCache]: Analyzing trace with hash -581716896, now seen corresponding path program 2 times [2020-09-15 00:25:17,572 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:25:17,572 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300252714] [2020-09-15 00:25:17,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:25:17,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:25:17,633 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-15 00:25:17,634 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300252714] [2020-09-15 00:25:17,634 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:25:17,634 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-15 00:25:17,634 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586499893] [2020-09-15 00:25:17,635 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-15 00:25:17,635 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:25:17,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-15 00:25:17,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-15 00:25:17,635 INFO L87 Difference]: Start difference. First operand 36258 states and 193887 transitions. Second operand 7 states. [2020-09-15 00:25:18,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:25:18,365 INFO L93 Difference]: Finished difference Result 84364 states and 406246 transitions. [2020-09-15 00:25:18,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-15 00:25:18,365 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-09-15 00:25:18,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:25:19,189 INFO L225 Difference]: With dead ends: 84364 [2020-09-15 00:25:19,189 INFO L226 Difference]: Without dead ends: 84309 [2020-09-15 00:25:19,189 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-09-15 00:25:20,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84309 states. [2020-09-15 00:25:21,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84309 to 37062. [2020-09-15 00:25:21,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37062 states. [2020-09-15 00:25:21,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37062 states to 37062 states and 198528 transitions. [2020-09-15 00:25:21,160 INFO L78 Accepts]: Start accepts. Automaton has 37062 states and 198528 transitions. Word has length 23 [2020-09-15 00:25:21,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:25:21,160 INFO L479 AbstractCegarLoop]: Abstraction has 37062 states and 198528 transitions. [2020-09-15 00:25:21,160 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-15 00:25:21,160 INFO L276 IsEmpty]: Start isEmpty. Operand 37062 states and 198528 transitions. [2020-09-15 00:25:21,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-15 00:25:21,163 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:25:21,163 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:25:21,163 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2020-09-15 00:25:21,163 INFO L427 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]=== [2020-09-15 00:25:21,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:25:21,164 INFO L82 PathProgramCache]: Analyzing trace with hash 1745706838, now seen corresponding path program 1 times [2020-09-15 00:25:21,164 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:25:21,164 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751431252] [2020-09-15 00:25:21,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:25:21,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:25:21,248 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-15 00:25:21,248 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751431252] [2020-09-15 00:25:21,249 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1715577365] [2020-09-15 00:25:21,249 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 [2020-09-15 00:25:21,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:25:21,371 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 8 conjunts are in the unsatisfiable core [2020-09-15 00:25:21,372 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:25:21,398 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-15 00:25:21,398 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:25:21,398 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-09-15 00:25:21,399 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919202248] [2020-09-15 00:25:21,399 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-15 00:25:21,399 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:25:21,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-15 00:25:21,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-09-15 00:25:21,400 INFO L87 Difference]: Start difference. First operand 37062 states and 198528 transitions. Second operand 11 states. [2020-09-15 00:25:23,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:25:23,474 INFO L93 Difference]: Finished difference Result 122892 states and 561130 transitions. [2020-09-15 00:25:23,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:25:23,475 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2020-09-15 00:25:23,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:25:23,836 INFO L225 Difference]: With dead ends: 122892 [2020-09-15 00:25:23,836 INFO L226 Difference]: Without dead ends: 122862 [2020-09-15 00:25:23,836 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 251 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-09-15 00:25:25,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122862 states. [2020-09-15 00:25:26,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122862 to 36735. [2020-09-15 00:25:26,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36735 states. [2020-09-15 00:25:26,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36735 states to 36735 states and 196486 transitions. [2020-09-15 00:25:26,489 INFO L78 Accepts]: Start accepts. Automaton has 36735 states and 196486 transitions. Word has length 25 [2020-09-15 00:25:26,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:25:26,490 INFO L479 AbstractCegarLoop]: Abstraction has 36735 states and 196486 transitions. [2020-09-15 00:25:26,490 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-15 00:25:26,490 INFO L276 IsEmpty]: Start isEmpty. Operand 36735 states and 196486 transitions. [2020-09-15 00:25:26,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-15 00:25:26,494 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:25:26,494 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:25:26,694 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable98 [2020-09-15 00:25:26,695 INFO L427 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]=== [2020-09-15 00:25:26,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:25:26,695 INFO L82 PathProgramCache]: Analyzing trace with hash 1730856598, now seen corresponding path program 2 times [2020-09-15 00:25:26,695 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:25:26,696 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722969717] [2020-09-15 00:25:26,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:25:26,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:25:26,766 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-15 00:25:26,766 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722969717] [2020-09-15 00:25:26,767 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [391147118] [2020-09-15 00:25:26,767 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 [2020-09-15 00:25:27,386 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-09-15 00:25:27,386 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-15 00:25:27,387 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 8 conjunts are in the unsatisfiable core [2020-09-15 00:25:27,388 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:25:27,412 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-15 00:25:27,412 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:25:27,413 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-09-15 00:25:27,413 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787501251] [2020-09-15 00:25:27,413 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-15 00:25:27,413 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:25:27,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-15 00:25:27,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-09-15 00:25:27,413 INFO L87 Difference]: Start difference. First operand 36735 states and 196486 transitions. Second operand 11 states. [2020-09-15 00:25:28,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:25:28,874 INFO L93 Difference]: Finished difference Result 121506 states and 554103 transitions. [2020-09-15 00:25:28,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:25:28,874 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2020-09-15 00:25:28,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:25:29,283 INFO L225 Difference]: With dead ends: 121506 [2020-09-15 00:25:29,284 INFO L226 Difference]: Without dead ends: 121473 [2020-09-15 00:25:29,284 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 251 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-09-15 00:25:30,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121473 states. [2020-09-15 00:25:34,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121473 to 36666. [2020-09-15 00:25:34,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36666 states. [2020-09-15 00:25:34,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36666 states to 36666 states and 195964 transitions. [2020-09-15 00:25:34,962 INFO L78 Accepts]: Start accepts. Automaton has 36666 states and 195964 transitions. Word has length 25 [2020-09-15 00:25:34,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:25:34,963 INFO L479 AbstractCegarLoop]: Abstraction has 36666 states and 195964 transitions. [2020-09-15 00:25:34,963 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-15 00:25:34,963 INFO L276 IsEmpty]: Start isEmpty. Operand 36666 states and 195964 transitions. [2020-09-15 00:25:34,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-15 00:25:34,967 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:25:34,967 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:25:35,167 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99,39 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:25:35,168 INFO L427 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]=== [2020-09-15 00:25:35,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:25:35,169 INFO L82 PathProgramCache]: Analyzing trace with hash 1730878670, now seen corresponding path program 1 times [2020-09-15 00:25:35,169 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:25:35,169 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874925058] [2020-09-15 00:25:35,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:25:35,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:25:35,251 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-15 00:25:35,251 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874925058] [2020-09-15 00:25:35,251 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2078211656] [2020-09-15 00:25:35,251 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 [2020-09-15 00:25:35,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:25:35,369 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 8 conjunts are in the unsatisfiable core [2020-09-15 00:25:35,369 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:25:35,393 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-15 00:25:35,393 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:25:35,393 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-09-15 00:25:35,393 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161236881] [2020-09-15 00:25:35,394 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-15 00:25:35,394 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:25:35,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-15 00:25:35,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-09-15 00:25:35,394 INFO L87 Difference]: Start difference. First operand 36666 states and 195964 transitions. Second operand 11 states. [2020-09-15 00:25:36,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:25:36,686 INFO L93 Difference]: Finished difference Result 120500 states and 549397 transitions. [2020-09-15 00:25:36,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:25:36,687 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2020-09-15 00:25:36,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:25:37,043 INFO L225 Difference]: With dead ends: 120500 [2020-09-15 00:25:37,043 INFO L226 Difference]: Without dead ends: 120470 [2020-09-15 00:25:37,044 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 247 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-09-15 00:25:39,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120470 states. [2020-09-15 00:25:40,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120470 to 36343. [2020-09-15 00:25:40,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36343 states. [2020-09-15 00:25:40,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36343 states to 36343 states and 194056 transitions. [2020-09-15 00:25:40,429 INFO L78 Accepts]: Start accepts. Automaton has 36343 states and 194056 transitions. Word has length 25 [2020-09-15 00:25:40,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:25:40,430 INFO L479 AbstractCegarLoop]: Abstraction has 36343 states and 194056 transitions. [2020-09-15 00:25:40,430 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-15 00:25:40,430 INFO L276 IsEmpty]: Start isEmpty. Operand 36343 states and 194056 transitions. [2020-09-15 00:25:40,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-15 00:25:40,433 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:25:40,433 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:25:40,633 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable100 [2020-09-15 00:25:40,634 INFO L427 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]=== [2020-09-15 00:25:40,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:25:40,634 INFO L82 PathProgramCache]: Analyzing trace with hash 1766918030, now seen corresponding path program 2 times [2020-09-15 00:25:40,635 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:25:40,635 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233003605] [2020-09-15 00:25:40,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:25:40,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:25:40,718 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-15 00:25:40,719 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233003605] [2020-09-15 00:25:40,719 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1181541244] [2020-09-15 00:25:40,719 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 [2020-09-15 00:25:40,834 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-09-15 00:25:40,835 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-15 00:25:40,835 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 8 conjunts are in the unsatisfiable core [2020-09-15 00:25:40,836 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:25:40,869 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-15 00:25:40,869 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:25:40,869 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-09-15 00:25:40,870 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093514481] [2020-09-15 00:25:40,870 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-15 00:25:40,870 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:25:40,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-15 00:25:40,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-09-15 00:25:40,871 INFO L87 Difference]: Start difference. First operand 36343 states and 194056 transitions. Second operand 11 states. [2020-09-15 00:25:42,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:25:42,234 INFO L93 Difference]: Finished difference Result 119731 states and 545560 transitions. [2020-09-15 00:25:42,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:25:42,235 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2020-09-15 00:25:42,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:25:43,493 INFO L225 Difference]: With dead ends: 119731 [2020-09-15 00:25:43,494 INFO L226 Difference]: Without dead ends: 119698 [2020-09-15 00:25:43,494 INFO L675 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 [2020-09-15 00:25:44,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119698 states. [2020-09-15 00:25:45,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119698 to 36040. [2020-09-15 00:25:45,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36040 states. [2020-09-15 00:25:46,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36040 states to 36040 states and 192287 transitions. [2020-09-15 00:25:46,014 INFO L78 Accepts]: Start accepts. Automaton has 36040 states and 192287 transitions. Word has length 25 [2020-09-15 00:25:46,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:25:46,014 INFO L479 AbstractCegarLoop]: Abstraction has 36040 states and 192287 transitions. [2020-09-15 00:25:46,014 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-15 00:25:46,015 INFO L276 IsEmpty]: Start isEmpty. Operand 36040 states and 192287 transitions. [2020-09-15 00:25:46,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-15 00:25:46,017 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:25:46,017 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:25:46,217 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101,41 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:25:46,218 INFO L427 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]=== [2020-09-15 00:25:46,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:25:46,219 INFO L82 PathProgramCache]: Analyzing trace with hash 1849107924, now seen corresponding path program 3 times [2020-09-15 00:25:46,219 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:25:46,219 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897196950] [2020-09-15 00:25:46,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:25:46,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:25:46,305 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-15 00:25:46,306 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897196950] [2020-09-15 00:25:46,306 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1907553427] [2020-09-15 00:25:46,306 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 [2020-09-15 00:25:46,418 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-09-15 00:25:46,418 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-15 00:25:46,419 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 8 conjunts are in the unsatisfiable core [2020-09-15 00:25:46,420 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:25:46,443 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-15 00:25:46,443 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:25:46,443 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-09-15 00:25:46,443 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114777589] [2020-09-15 00:25:46,443 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-15 00:25:46,444 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:25:46,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-15 00:25:46,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-09-15 00:25:46,444 INFO L87 Difference]: Start difference. First operand 36040 states and 192287 transitions. Second operand 11 states. [2020-09-15 00:25:48,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:25:48,103 INFO L93 Difference]: Finished difference Result 119762 states and 545615 transitions. [2020-09-15 00:25:48,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:25:48,104 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2020-09-15 00:25:48,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:25:48,435 INFO L225 Difference]: With dead ends: 119762 [2020-09-15 00:25:48,435 INFO L226 Difference]: Without dead ends: 119732 [2020-09-15 00:25:48,435 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 251 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-09-15 00:25:49,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119732 states. [2020-09-15 00:25:53,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119732 to 35475. [2020-09-15 00:25:53,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35475 states. [2020-09-15 00:25:54,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35475 states to 35475 states and 189246 transitions. [2020-09-15 00:25:54,094 INFO L78 Accepts]: Start accepts. Automaton has 35475 states and 189246 transitions. Word has length 25 [2020-09-15 00:25:54,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:25:54,094 INFO L479 AbstractCegarLoop]: Abstraction has 35475 states and 189246 transitions. [2020-09-15 00:25:54,094 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-15 00:25:54,094 INFO L276 IsEmpty]: Start isEmpty. Operand 35475 states and 189246 transitions. [2020-09-15 00:25:54,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-15 00:25:54,096 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:25:54,096 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:25:54,297 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable102 [2020-09-15 00:25:54,297 INFO L427 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]=== [2020-09-15 00:25:54,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:25:54,298 INFO L82 PathProgramCache]: Analyzing trace with hash -1177775680, now seen corresponding path program 4 times [2020-09-15 00:25:54,298 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:25:54,298 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967923654] [2020-09-15 00:25:54,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:25:54,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:25:54,383 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-15 00:25:54,384 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967923654] [2020-09-15 00:25:54,384 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1902674501] [2020-09-15 00:25:54,384 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 [2020-09-15 00:25:54,504 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-09-15 00:25:54,504 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-15 00:25:54,505 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 8 conjunts are in the unsatisfiable core [2020-09-15 00:25:54,506 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:25:54,530 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-15 00:25:54,530 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:25:54,530 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-09-15 00:25:54,530 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808856016] [2020-09-15 00:25:54,531 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-15 00:25:54,531 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:25:54,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-15 00:25:54,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-09-15 00:25:54,531 INFO L87 Difference]: Start difference. First operand 35475 states and 189246 transitions. Second operand 11 states. [2020-09-15 00:25:55,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:25:55,946 INFO L93 Difference]: Finished difference Result 120788 states and 550630 transitions. [2020-09-15 00:25:55,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:25:55,947 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2020-09-15 00:25:55,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:25:56,283 INFO L225 Difference]: With dead ends: 120788 [2020-09-15 00:25:56,283 INFO L226 Difference]: Without dead ends: 120755 [2020-09-15 00:25:56,284 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 253 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-09-15 00:25:57,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120755 states. [2020-09-15 00:25:59,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120755 to 35406. [2020-09-15 00:25:59,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35406 states. [2020-09-15 00:25:59,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35406 states to 35406 states and 188724 transitions. [2020-09-15 00:25:59,637 INFO L78 Accepts]: Start accepts. Automaton has 35406 states and 188724 transitions. Word has length 25 [2020-09-15 00:25:59,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:25:59,638 INFO L479 AbstractCegarLoop]: Abstraction has 35406 states and 188724 transitions. [2020-09-15 00:25:59,638 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-15 00:25:59,638 INFO L276 IsEmpty]: Start isEmpty. Operand 35406 states and 188724 transitions. [2020-09-15 00:25:59,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-15 00:25:59,640 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:25:59,640 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:25:59,846 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable103 [2020-09-15 00:25:59,846 INFO L427 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]=== [2020-09-15 00:25:59,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:25:59,847 INFO L82 PathProgramCache]: Analyzing trace with hash -1177752213, now seen corresponding path program 1 times [2020-09-15 00:25:59,847 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:25:59,848 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478403456] [2020-09-15 00:25:59,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:25:59,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:25:59,932 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-15 00:25:59,932 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478403456] [2020-09-15 00:25:59,933 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [12769564] [2020-09-15 00:25:59,933 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 [2020-09-15 00:26:00,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:26:00,053 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 8 conjunts are in the unsatisfiable core [2020-09-15 00:26:00,054 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:26:00,080 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-15 00:26:00,080 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:26:00,080 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-09-15 00:26:00,080 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100482270] [2020-09-15 00:26:00,081 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-15 00:26:00,081 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:26:00,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-15 00:26:00,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-09-15 00:26:00,081 INFO L87 Difference]: Start difference. First operand 35406 states and 188724 transitions. Second operand 11 states. [2020-09-15 00:26:01,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:26:01,563 INFO L93 Difference]: Finished difference Result 120291 states and 549128 transitions. [2020-09-15 00:26:01,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:26:01,563 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2020-09-15 00:26:01,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:26:02,789 INFO L225 Difference]: With dead ends: 120291 [2020-09-15 00:26:02,790 INFO L226 Difference]: Without dead ends: 120261 [2020-09-15 00:26:02,790 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 243 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-09-15 00:26:03,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120261 states. [2020-09-15 00:26:05,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120261 to 35196. [2020-09-15 00:26:05,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35196 states. [2020-09-15 00:26:05,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35196 states to 35196 states and 187476 transitions. [2020-09-15 00:26:05,319 INFO L78 Accepts]: Start accepts. Automaton has 35196 states and 187476 transitions. Word has length 25 [2020-09-15 00:26:05,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:26:05,319 INFO L479 AbstractCegarLoop]: Abstraction has 35196 states and 187476 transitions. [2020-09-15 00:26:05,319 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-15 00:26:05,319 INFO L276 IsEmpty]: Start isEmpty. Operand 35196 states and 187476 transitions. [2020-09-15 00:26:05,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-15 00:26:05,322 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:26:05,322 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:26:05,522 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104,44 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:26:05,523 INFO L427 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]=== [2020-09-15 00:26:05,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:26:05,523 INFO L82 PathProgramCache]: Analyzing trace with hash -1141712853, now seen corresponding path program 2 times [2020-09-15 00:26:05,524 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:26:05,524 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512235825] [2020-09-15 00:26:05,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:26:05,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:26:05,606 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-15 00:26:05,607 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512235825] [2020-09-15 00:26:05,607 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1342149215] [2020-09-15 00:26:05,607 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 [2020-09-15 00:26:05,727 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-09-15 00:26:05,727 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-15 00:26:05,728 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 8 conjunts are in the unsatisfiable core [2020-09-15 00:26:05,729 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:26:05,758 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-15 00:26:05,759 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:26:05,759 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-09-15 00:26:05,759 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60773341] [2020-09-15 00:26:05,759 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-15 00:26:05,760 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:26:05,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-15 00:26:05,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-09-15 00:26:05,760 INFO L87 Difference]: Start difference. First operand 35196 states and 187476 transitions. Second operand 11 states. [2020-09-15 00:26:07,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:26:07,393 INFO L93 Difference]: Finished difference Result 119264 states and 544110 transitions. [2020-09-15 00:26:07,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:26:07,394 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2020-09-15 00:26:07,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:26:07,745 INFO L225 Difference]: With dead ends: 119264 [2020-09-15 00:26:07,745 INFO L226 Difference]: Without dead ends: 119224 [2020-09-15 00:26:07,745 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 241 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-09-15 00:26:08,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119224 states. [2020-09-15 00:26:13,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119224 to 34815. [2020-09-15 00:26:13,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34815 states. [2020-09-15 00:26:13,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34815 states to 34815 states and 185342 transitions. [2020-09-15 00:26:13,288 INFO L78 Accepts]: Start accepts. Automaton has 34815 states and 185342 transitions. Word has length 25 [2020-09-15 00:26:13,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:26:13,288 INFO L479 AbstractCegarLoop]: Abstraction has 34815 states and 185342 transitions. [2020-09-15 00:26:13,288 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-15 00:26:13,288 INFO L276 IsEmpty]: Start isEmpty. Operand 34815 states and 185342 transitions. [2020-09-15 00:26:13,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-15 00:26:13,291 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:26:13,291 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:26:13,498 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable105 [2020-09-15 00:26:13,499 INFO L427 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]=== [2020-09-15 00:26:13,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:26:13,499 INFO L82 PathProgramCache]: Analyzing trace with hash -980827488, now seen corresponding path program 5 times [2020-09-15 00:26:13,500 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:26:13,500 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575828923] [2020-09-15 00:26:13,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:26:13,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:26:13,585 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-15 00:26:13,585 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575828923] [2020-09-15 00:26:13,585 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:26:13,586 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-15 00:26:13,586 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579371413] [2020-09-15 00:26:13,586 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-15 00:26:13,586 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:26:13,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-15 00:26:13,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-15 00:26:13,587 INFO L87 Difference]: Start difference. First operand 34815 states and 185342 transitions. Second operand 9 states. [2020-09-15 00:26:14,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:26:14,873 INFO L93 Difference]: Finished difference Result 119116 states and 542590 transitions. [2020-09-15 00:26:14,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:26:14,873 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-09-15 00:26:14,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:26:15,209 INFO L225 Difference]: With dead ends: 119116 [2020-09-15 00:26:15,210 INFO L226 Difference]: Without dead ends: 119086 [2020-09-15 00:26:15,210 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-09-15 00:26:16,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119086 states. [2020-09-15 00:26:18,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119086 to 34044. [2020-09-15 00:26:18,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34044 states. [2020-09-15 00:26:18,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34044 states to 34044 states and 181257 transitions. [2020-09-15 00:26:18,428 INFO L78 Accepts]: Start accepts. Automaton has 34044 states and 181257 transitions. Word has length 25 [2020-09-15 00:26:18,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:26:18,428 INFO L479 AbstractCegarLoop]: Abstraction has 34044 states and 181257 transitions. [2020-09-15 00:26:18,428 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-15 00:26:18,429 INFO L276 IsEmpty]: Start isEmpty. Operand 34044 states and 181257 transitions. [2020-09-15 00:26:18,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-15 00:26:18,431 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:26:18,431 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:26:18,431 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2020-09-15 00:26:18,431 INFO L427 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]=== [2020-09-15 00:26:18,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:26:18,432 INFO L82 PathProgramCache]: Analyzing trace with hash -980805416, now seen corresponding path program 3 times [2020-09-15 00:26:18,432 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:26:18,432 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103442157] [2020-09-15 00:26:18,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:26:18,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:26:18,512 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-15 00:26:18,513 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103442157] [2020-09-15 00:26:18,513 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:26:18,513 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-15 00:26:18,513 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305437271] [2020-09-15 00:26:18,514 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-15 00:26:18,514 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:26:18,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-15 00:26:18,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-15 00:26:18,514 INFO L87 Difference]: Start difference. First operand 34044 states and 181257 transitions. Second operand 9 states. [2020-09-15 00:26:19,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:26:19,867 INFO L93 Difference]: Finished difference Result 118392 states and 539774 transitions. [2020-09-15 00:26:19,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:26:19,867 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-09-15 00:26:19,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:26:20,211 INFO L225 Difference]: With dead ends: 118392 [2020-09-15 00:26:20,211 INFO L226 Difference]: Without dead ends: 118362 [2020-09-15 00:26:20,212 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-09-15 00:26:22,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118362 states. [2020-09-15 00:26:23,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118362 to 33530. [2020-09-15 00:26:23,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33530 states. [2020-09-15 00:26:23,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33530 states to 33530 states and 178563 transitions. [2020-09-15 00:26:23,471 INFO L78 Accepts]: Start accepts. Automaton has 33530 states and 178563 transitions. Word has length 25 [2020-09-15 00:26:23,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:26:23,471 INFO L479 AbstractCegarLoop]: Abstraction has 33530 states and 178563 transitions. [2020-09-15 00:26:23,471 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-15 00:26:23,471 INFO L276 IsEmpty]: Start isEmpty. Operand 33530 states and 178563 transitions. [2020-09-15 00:26:23,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-15 00:26:23,473 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:26:23,473 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:26:23,474 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2020-09-15 00:26:23,474 INFO L427 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]=== [2020-09-15 00:26:23,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:26:23,474 INFO L82 PathProgramCache]: Analyzing trace with hash -979488288, now seen corresponding path program 6 times [2020-09-15 00:26:23,474 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:26:23,474 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689707821] [2020-09-15 00:26:23,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:26:23,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:26:23,557 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-15 00:26:23,558 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689707821] [2020-09-15 00:26:23,558 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:26:23,559 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-15 00:26:23,559 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636649744] [2020-09-15 00:26:23,559 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-15 00:26:23,560 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:26:23,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-15 00:26:23,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-15 00:26:23,560 INFO L87 Difference]: Start difference. First operand 33530 states and 178563 transitions. Second operand 9 states. [2020-09-15 00:26:25,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:26:25,306 INFO L93 Difference]: Finished difference Result 116966 states and 531912 transitions. [2020-09-15 00:26:25,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:26:25,306 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-09-15 00:26:25,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:26:25,640 INFO L225 Difference]: With dead ends: 116966 [2020-09-15 00:26:25,641 INFO L226 Difference]: Without dead ends: 116926 [2020-09-15 00:26:25,641 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-09-15 00:26:26,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116926 states. [2020-09-15 00:26:28,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116926 to 32557. [2020-09-15 00:26:28,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32557 states. [2020-09-15 00:26:31,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32557 states to 32557 states and 173592 transitions. [2020-09-15 00:26:31,828 INFO L78 Accepts]: Start accepts. Automaton has 32557 states and 173592 transitions. Word has length 25 [2020-09-15 00:26:31,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:26:31,828 INFO L479 AbstractCegarLoop]: Abstraction has 32557 states and 173592 transitions. [2020-09-15 00:26:31,828 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-15 00:26:31,828 INFO L276 IsEmpty]: Start isEmpty. Operand 32557 states and 173592 transitions. [2020-09-15 00:26:31,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-15 00:26:31,830 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:26:31,830 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:26:31,831 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2020-09-15 00:26:31,831 INFO L427 AbstractCegarLoop]: === Iteration 35 === [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]=== [2020-09-15 00:26:31,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:26:31,831 INFO L82 PathProgramCache]: Analyzing trace with hash -979464821, now seen corresponding path program 3 times [2020-09-15 00:26:31,831 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:26:31,831 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872911564] [2020-09-15 00:26:31,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:26:31,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:26:31,911 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-15 00:26:31,912 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872911564] [2020-09-15 00:26:31,912 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:26:31,912 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-15 00:26:31,912 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338396592] [2020-09-15 00:26:31,913 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-15 00:26:31,913 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:26:31,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-15 00:26:31,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-15 00:26:31,913 INFO L87 Difference]: Start difference. First operand 32557 states and 173592 transitions. Second operand 9 states. [2020-09-15 00:26:33,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:26:33,201 INFO L93 Difference]: Finished difference Result 116421 states and 530054 transitions. [2020-09-15 00:26:33,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:26:33,201 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-09-15 00:26:33,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:26:33,538 INFO L225 Difference]: With dead ends: 116421 [2020-09-15 00:26:33,538 INFO L226 Difference]: Without dead ends: 116391 [2020-09-15 00:26:33,539 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-09-15 00:26:34,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116391 states. [2020-09-15 00:26:36,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116391 to 32226. [2020-09-15 00:26:36,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32226 states. [2020-09-15 00:26:36,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32226 states to 32226 states and 171898 transitions. [2020-09-15 00:26:36,452 INFO L78 Accepts]: Start accepts. Automaton has 32226 states and 171898 transitions. Word has length 25 [2020-09-15 00:26:36,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:26:36,452 INFO L479 AbstractCegarLoop]: Abstraction has 32226 states and 171898 transitions. [2020-09-15 00:26:36,452 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-15 00:26:36,453 INFO L276 IsEmpty]: Start isEmpty. Operand 32226 states and 171898 transitions. [2020-09-15 00:26:36,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-15 00:26:36,455 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:26:36,455 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:26:36,455 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2020-09-15 00:26:36,455 INFO L427 AbstractCegarLoop]: === Iteration 36 === [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]=== [2020-09-15 00:26:36,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:26:36,455 INFO L82 PathProgramCache]: Analyzing trace with hash -958277096, now seen corresponding path program 4 times [2020-09-15 00:26:36,456 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:26:36,456 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798071223] [2020-09-15 00:26:36,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:26:36,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:26:36,541 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-15 00:26:36,541 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798071223] [2020-09-15 00:26:36,542 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:26:36,542 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-15 00:26:36,542 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271661019] [2020-09-15 00:26:36,543 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-15 00:26:36,543 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:26:36,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-15 00:26:36,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-15 00:26:36,543 INFO L87 Difference]: Start difference. First operand 32226 states and 171898 transitions. Second operand 9 states. [2020-09-15 00:26:37,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:26:37,864 INFO L93 Difference]: Finished difference Result 116502 states and 530595 transitions. [2020-09-15 00:26:37,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:26:37,864 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-09-15 00:26:37,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:26:38,212 INFO L225 Difference]: With dead ends: 116502 [2020-09-15 00:26:38,212 INFO L226 Difference]: Without dead ends: 116462 [2020-09-15 00:26:38,212 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-09-15 00:26:39,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116462 states. [2020-09-15 00:26:41,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116462 to 32188. [2020-09-15 00:26:41,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32188 states. [2020-09-15 00:26:41,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32188 states to 32188 states and 171558 transitions. [2020-09-15 00:26:41,448 INFO L78 Accepts]: Start accepts. Automaton has 32188 states and 171558 transitions. Word has length 25 [2020-09-15 00:26:41,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:26:41,449 INFO L479 AbstractCegarLoop]: Abstraction has 32188 states and 171558 transitions. [2020-09-15 00:26:41,449 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-15 00:26:41,449 INFO L276 IsEmpty]: Start isEmpty. Operand 32188 states and 171558 transitions. [2020-09-15 00:26:41,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-15 00:26:41,451 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:26:41,451 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:26:41,451 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2020-09-15 00:26:41,451 INFO L427 AbstractCegarLoop]: === Iteration 37 === [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]=== [2020-09-15 00:26:41,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:26:41,452 INFO L82 PathProgramCache]: Analyzing trace with hash -958275701, now seen corresponding path program 4 times [2020-09-15 00:26:41,452 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:26:41,452 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715595520] [2020-09-15 00:26:41,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:26:41,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:26:41,535 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-15 00:26:41,536 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715595520] [2020-09-15 00:26:41,536 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:26:41,536 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-15 00:26:41,536 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214297709] [2020-09-15 00:26:41,537 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-15 00:26:41,537 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:26:41,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-15 00:26:41,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-15 00:26:41,537 INFO L87 Difference]: Start difference. First operand 32188 states and 171558 transitions. Second operand 9 states. [2020-09-15 00:26:42,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:26:42,952 INFO L93 Difference]: Finished difference Result 115555 states and 526107 transitions. [2020-09-15 00:26:42,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:26:42,952 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-09-15 00:26:42,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:26:43,299 INFO L225 Difference]: With dead ends: 115555 [2020-09-15 00:26:43,299 INFO L226 Difference]: Without dead ends: 115515 [2020-09-15 00:26:43,300 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-09-15 00:26:45,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115515 states. [2020-09-15 00:26:46,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115515 to 31998. [2020-09-15 00:26:46,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31998 states. [2020-09-15 00:26:46,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31998 states to 31998 states and 170450 transitions. [2020-09-15 00:26:46,308 INFO L78 Accepts]: Start accepts. Automaton has 31998 states and 170450 transitions. Word has length 25 [2020-09-15 00:26:46,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:26:46,308 INFO L479 AbstractCegarLoop]: Abstraction has 31998 states and 170450 transitions. [2020-09-15 00:26:46,308 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-15 00:26:46,308 INFO L276 IsEmpty]: Start isEmpty. Operand 31998 states and 170450 transitions. [2020-09-15 00:26:46,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-15 00:26:46,310 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:26:46,311 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:26:46,311 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2020-09-15 00:26:46,311 INFO L427 AbstractCegarLoop]: === Iteration 38 === [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]=== [2020-09-15 00:26:46,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:26:46,311 INFO L82 PathProgramCache]: Analyzing trace with hash -1698987747, now seen corresponding path program 1 times [2020-09-15 00:26:46,311 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:26:46,311 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71062245] [2020-09-15 00:26:46,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:26:46,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:26:46,358 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-09-15 00:26:46,358 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71062245] [2020-09-15 00:26:46,359 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:26:46,359 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-15 00:26:46,359 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643603412] [2020-09-15 00:26:46,359 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-15 00:26:46,359 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:26:46,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-15 00:26:46,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-15 00:26:46,360 INFO L87 Difference]: Start difference. First operand 31998 states and 170450 transitions. Second operand 5 states. [2020-09-15 00:26:46,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:26:46,791 INFO L93 Difference]: Finished difference Result 56734 states and 290623 transitions. [2020-09-15 00:26:46,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-15 00:26:46,791 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2020-09-15 00:26:46,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:26:46,990 INFO L225 Difference]: With dead ends: 56734 [2020-09-15 00:26:46,990 INFO L226 Difference]: Without dead ends: 56671 [2020-09-15 00:26:46,990 INFO L675 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 [2020-09-15 00:26:48,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56671 states. [2020-09-15 00:26:48,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56671 to 40400. [2020-09-15 00:26:48,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40400 states. [2020-09-15 00:26:49,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40400 states to 40400 states and 215336 transitions. [2020-09-15 00:26:49,151 INFO L78 Accepts]: Start accepts. Automaton has 40400 states and 215336 transitions. Word has length 25 [2020-09-15 00:26:49,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:26:49,151 INFO L479 AbstractCegarLoop]: Abstraction has 40400 states and 215336 transitions. [2020-09-15 00:26:49,151 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-15 00:26:49,151 INFO L276 IsEmpty]: Start isEmpty. Operand 40400 states and 215336 transitions. [2020-09-15 00:26:49,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-15 00:26:49,153 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:26:49,153 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:26:49,154 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2020-09-15 00:26:49,154 INFO L427 AbstractCegarLoop]: === Iteration 39 === [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]=== [2020-09-15 00:26:49,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:26:49,154 INFO L82 PathProgramCache]: Analyzing trace with hash -670679464, now seen corresponding path program 5 times [2020-09-15 00:26:49,154 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:26:49,154 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882944815] [2020-09-15 00:26:49,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:26:49,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:26:49,241 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-15 00:26:49,242 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882944815] [2020-09-15 00:26:49,242 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:26:49,242 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-15 00:26:49,242 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805623482] [2020-09-15 00:26:49,243 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-15 00:26:49,243 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:26:49,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-15 00:26:49,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-15 00:26:49,244 INFO L87 Difference]: Start difference. First operand 40400 states and 215336 transitions. Second operand 9 states. [2020-09-15 00:26:50,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:26:50,717 INFO L93 Difference]: Finished difference Result 137449 states and 636138 transitions. [2020-09-15 00:26:50,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:26:50,718 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-09-15 00:26:50,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:26:51,151 INFO L225 Difference]: With dead ends: 137449 [2020-09-15 00:26:51,151 INFO L226 Difference]: Without dead ends: 137407 [2020-09-15 00:26:51,152 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 223 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-09-15 00:26:53,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137407 states. [2020-09-15 00:26:54,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137407 to 39840. [2020-09-15 00:26:54,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39840 states. [2020-09-15 00:26:54,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39840 states to 39840 states and 212294 transitions. [2020-09-15 00:26:54,982 INFO L78 Accepts]: Start accepts. Automaton has 39840 states and 212294 transitions. Word has length 25 [2020-09-15 00:26:54,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:26:54,982 INFO L479 AbstractCegarLoop]: Abstraction has 39840 states and 212294 transitions. [2020-09-15 00:26:54,982 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-15 00:26:54,982 INFO L276 IsEmpty]: Start isEmpty. Operand 39840 states and 212294 transitions. [2020-09-15 00:26:54,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-15 00:26:54,985 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:26:54,985 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:26:54,985 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2020-09-15 00:26:54,985 INFO L427 AbstractCegarLoop]: === Iteration 40 === [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]=== [2020-09-15 00:26:54,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:26:54,985 INFO L82 PathProgramCache]: Analyzing trace with hash -669338869, now seen corresponding path program 5 times [2020-09-15 00:26:54,985 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:26:54,985 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053073447] [2020-09-15 00:26:54,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:26:54,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:26:55,074 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-15 00:26:55,075 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053073447] [2020-09-15 00:26:55,075 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:26:55,075 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-15 00:26:55,075 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723223434] [2020-09-15 00:26:55,076 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-15 00:26:55,076 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:26:55,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-15 00:26:55,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-15 00:26:55,076 INFO L87 Difference]: Start difference. First operand 39840 states and 212294 transitions. Second operand 9 states. [2020-09-15 00:26:56,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:26:56,863 INFO L93 Difference]: Finished difference Result 136260 states and 629977 transitions. [2020-09-15 00:26:56,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:26:56,864 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-09-15 00:26:56,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:26:57,288 INFO L225 Difference]: With dead ends: 136260 [2020-09-15 00:26:57,294 INFO L226 Difference]: Without dead ends: 136218 [2020-09-15 00:26:57,294 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 221 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-09-15 00:26:58,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136218 states. [2020-09-15 00:27:00,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136218 to 39457. [2020-09-15 00:27:00,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39457 states. [2020-09-15 00:27:01,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39457 states to 39457 states and 210241 transitions. [2020-09-15 00:27:01,062 INFO L78 Accepts]: Start accepts. Automaton has 39457 states and 210241 transitions. Word has length 25 [2020-09-15 00:27:01,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:27:01,062 INFO L479 AbstractCegarLoop]: Abstraction has 39457 states and 210241 transitions. [2020-09-15 00:27:01,062 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-15 00:27:01,062 INFO L276 IsEmpty]: Start isEmpty. Operand 39457 states and 210241 transitions. [2020-09-15 00:27:01,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-15 00:27:01,064 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:27:01,065 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:27:01,065 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2020-09-15 00:27:01,065 INFO L427 AbstractCegarLoop]: === Iteration 41 === [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]=== [2020-09-15 00:27:01,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:27:01,065 INFO L82 PathProgramCache]: Analyzing trace with hash -684190504, now seen corresponding path program 6 times [2020-09-15 00:27:01,065 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:27:01,065 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972178372] [2020-09-15 00:27:01,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:27:01,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:27:01,152 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-15 00:27:01,153 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972178372] [2020-09-15 00:27:01,153 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:27:01,153 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-15 00:27:01,153 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219352008] [2020-09-15 00:27:01,153 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-15 00:27:01,154 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:27:01,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-15 00:27:01,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-15 00:27:01,154 INFO L87 Difference]: Start difference. First operand 39457 states and 210241 transitions. Second operand 9 states. [2020-09-15 00:27:02,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:27:02,654 INFO L93 Difference]: Finished difference Result 135358 states and 625465 transitions. [2020-09-15 00:27:02,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:27:02,654 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-09-15 00:27:02,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:27:03,057 INFO L225 Difference]: With dead ends: 135358 [2020-09-15 00:27:03,058 INFO L226 Difference]: Without dead ends: 135306 [2020-09-15 00:27:03,058 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-09-15 00:27:08,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135306 states. [2020-09-15 00:27:09,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135306 to 38674. [2020-09-15 00:27:09,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38674 states. [2020-09-15 00:27:09,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38674 states to 38674 states and 206150 transitions. [2020-09-15 00:27:09,595 INFO L78 Accepts]: Start accepts. Automaton has 38674 states and 206150 transitions. Word has length 25 [2020-09-15 00:27:09,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:27:09,596 INFO L479 AbstractCegarLoop]: Abstraction has 38674 states and 206150 transitions. [2020-09-15 00:27:09,596 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-15 00:27:09,596 INFO L276 IsEmpty]: Start isEmpty. Operand 38674 states and 206150 transitions. [2020-09-15 00:27:09,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-15 00:27:09,598 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:27:09,598 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:27:09,598 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2020-09-15 00:27:09,598 INFO L427 AbstractCegarLoop]: === Iteration 42 === [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]=== [2020-09-15 00:27:09,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:27:09,598 INFO L82 PathProgramCache]: Analyzing trace with hash -684189109, now seen corresponding path program 6 times [2020-09-15 00:27:09,599 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:27:09,599 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989437824] [2020-09-15 00:27:09,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:27:09,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:27:09,682 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-15 00:27:09,682 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989437824] [2020-09-15 00:27:09,683 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:27:09,683 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-15 00:27:09,683 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374254747] [2020-09-15 00:27:09,683 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-15 00:27:09,684 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:27:09,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-15 00:27:09,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-15 00:27:09,684 INFO L87 Difference]: Start difference. First operand 38674 states and 206150 transitions. Second operand 9 states. [2020-09-15 00:27:11,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:27:11,801 INFO L93 Difference]: Finished difference Result 134089 states and 619317 transitions. [2020-09-15 00:27:11,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:27:11,801 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-09-15 00:27:11,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:27:12,258 INFO L225 Difference]: With dead ends: 134089 [2020-09-15 00:27:12,258 INFO L226 Difference]: Without dead ends: 134037 [2020-09-15 00:27:12,258 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2020-09-15 00:27:13,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134037 states. [2020-09-15 00:27:18,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134037 to 37675. [2020-09-15 00:27:18,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37675 states. [2020-09-15 00:27:18,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37675 states to 37675 states and 201015 transitions. [2020-09-15 00:27:18,804 INFO L78 Accepts]: Start accepts. Automaton has 37675 states and 201015 transitions. Word has length 25 [2020-09-15 00:27:18,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:27:18,804 INFO L479 AbstractCegarLoop]: Abstraction has 37675 states and 201015 transitions. [2020-09-15 00:27:18,804 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-15 00:27:18,804 INFO L276 IsEmpty]: Start isEmpty. Operand 37675 states and 201015 transitions. [2020-09-15 00:27:18,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-15 00:27:18,808 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:27:18,808 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:27:18,808 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2020-09-15 00:27:18,808 INFO L427 AbstractCegarLoop]: === Iteration 43 === [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]=== [2020-09-15 00:27:18,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:27:18,808 INFO L82 PathProgramCache]: Analyzing trace with hash -1444696671, now seen corresponding path program 1 times [2020-09-15 00:27:18,808 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:27:18,808 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504136459] [2020-09-15 00:27:18,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:27:18,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:27:18,874 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-09-15 00:27:18,874 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504136459] [2020-09-15 00:27:18,875 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1439717325] [2020-09-15 00:27:18,875 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 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:27:19,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:27:19,003 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 6 conjunts are in the unsatisfiable core [2020-09-15 00:27:19,003 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:27:19,023 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-09-15 00:27:19,023 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:27:19,024 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-09-15 00:27:19,024 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587422045] [2020-09-15 00:27:19,024 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-15 00:27:19,024 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:27:19,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-15 00:27:19,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-09-15 00:27:19,024 INFO L87 Difference]: Start difference. First operand 37675 states and 201015 transitions. Second operand 9 states. [2020-09-15 00:27:19,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:27:19,764 INFO L93 Difference]: Finished difference Result 85349 states and 414605 transitions. [2020-09-15 00:27:19,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-15 00:27:19,765 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 27 [2020-09-15 00:27:19,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:27:20,044 INFO L225 Difference]: With dead ends: 85349 [2020-09-15 00:27:20,045 INFO L226 Difference]: Without dead ends: 85301 [2020-09-15 00:27:20,045 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=89, Invalid=183, Unknown=0, NotChecked=0, Total=272 [2020-09-15 00:27:21,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85301 states. [2020-09-15 00:27:22,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85301 to 38836. [2020-09-15 00:27:22,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38836 states. [2020-09-15 00:27:22,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38836 states to 38836 states and 206710 transitions. [2020-09-15 00:27:22,765 INFO L78 Accepts]: Start accepts. Automaton has 38836 states and 206710 transitions. Word has length 27 [2020-09-15 00:27:22,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:27:22,766 INFO L479 AbstractCegarLoop]: Abstraction has 38836 states and 206710 transitions. [2020-09-15 00:27:22,766 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-15 00:27:22,766 INFO L276 IsEmpty]: Start isEmpty. Operand 38836 states and 206710 transitions. [2020-09-15 00:27:22,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-15 00:27:22,770 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:27:22,770 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:27:22,970 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable117 [2020-09-15 00:27:22,971 INFO L427 AbstractCegarLoop]: === Iteration 44 === [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]=== [2020-09-15 00:27:22,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:27:22,971 INFO L82 PathProgramCache]: Analyzing trace with hash -1707919879, now seen corresponding path program 1 times [2020-09-15 00:27:22,971 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:27:22,972 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913045154] [2020-09-15 00:27:22,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:27:22,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:27:23,079 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-15 00:27:23,079 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913045154] [2020-09-15 00:27:23,079 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [882214109] [2020-09-15 00:27:23,079 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 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:27:23,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:27:23,205 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 10 conjunts are in the unsatisfiable core [2020-09-15 00:27:23,206 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:27:23,234 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-15 00:27:23,234 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:27:23,235 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 11 [2020-09-15 00:27:23,235 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163103972] [2020-09-15 00:27:23,235 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-15 00:27:23,235 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:27:23,235 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-15 00:27:23,235 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2020-09-15 00:27:23,235 INFO L87 Difference]: Start difference. First operand 38836 states and 206710 transitions. Second operand 13 states. [2020-09-15 00:27:26,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:27:26,170 INFO L93 Difference]: Finished difference Result 184520 states and 806691 transitions. [2020-09-15 00:27:26,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-15 00:27:26,171 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 27 [2020-09-15 00:27:26,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:27:26,786 INFO L225 Difference]: With dead ends: 184520 [2020-09-15 00:27:26,786 INFO L226 Difference]: Without dead ends: 184502 [2020-09-15 00:27:26,787 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1606 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1001, Invalid=3969, Unknown=0, NotChecked=0, Total=4970 [2020-09-15 00:27:29,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184502 states. [2020-09-15 00:27:35,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184502 to 38937. [2020-09-15 00:27:35,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38937 states. [2020-09-15 00:27:35,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38937 states to 38937 states and 207195 transitions. [2020-09-15 00:27:35,364 INFO L78 Accepts]: Start accepts. Automaton has 38937 states and 207195 transitions. Word has length 27 [2020-09-15 00:27:35,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:27:35,364 INFO L479 AbstractCegarLoop]: Abstraction has 38937 states and 207195 transitions. [2020-09-15 00:27:35,364 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-15 00:27:35,364 INFO L276 IsEmpty]: Start isEmpty. Operand 38937 states and 207195 transitions. [2020-09-15 00:27:35,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-15 00:27:35,368 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:27:35,369 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:27:35,569 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable118 [2020-09-15 00:27:35,570 INFO L427 AbstractCegarLoop]: === Iteration 45 === [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]=== [2020-09-15 00:27:35,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:27:35,570 INFO L82 PathProgramCache]: Analyzing trace with hash -1671880519, now seen corresponding path program 2 times [2020-09-15 00:27:35,571 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:27:35,571 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662128352] [2020-09-15 00:27:35,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:27:35,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:27:35,678 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-15 00:27:35,679 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662128352] [2020-09-15 00:27:35,679 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1295100875] [2020-09-15 00:27:35,679 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 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:27:35,798 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-09-15 00:27:35,798 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-15 00:27:35,799 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 10 conjunts are in the unsatisfiable core [2020-09-15 00:27:35,799 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:27:35,826 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-15 00:27:35,827 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:27:35,827 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 11 [2020-09-15 00:27:35,827 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659568007] [2020-09-15 00:27:35,827 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-15 00:27:35,828 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:27:35,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-15 00:27:35,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2020-09-15 00:27:35,828 INFO L87 Difference]: Start difference. First operand 38937 states and 207195 transitions. Second operand 13 states. [2020-09-15 00:27:38,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:27:38,973 INFO L93 Difference]: Finished difference Result 184111 states and 804949 transitions. [2020-09-15 00:27:38,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-15 00:27:38,973 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 27 [2020-09-15 00:27:38,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:27:40,495 INFO L225 Difference]: With dead ends: 184111 [2020-09-15 00:27:40,495 INFO L226 Difference]: Without dead ends: 184087 [2020-09-15 00:27:40,496 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1595 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1001, Invalid=3969, Unknown=0, NotChecked=0, Total=4970 [2020-09-15 00:27:42,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184087 states. [2020-09-15 00:27:48,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184087 to 38705. [2020-09-15 00:27:48,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38705 states. [2020-09-15 00:27:48,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38705 states to 38705 states and 205959 transitions. [2020-09-15 00:27:48,238 INFO L78 Accepts]: Start accepts. Automaton has 38705 states and 205959 transitions. Word has length 27 [2020-09-15 00:27:48,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:27:48,239 INFO L479 AbstractCegarLoop]: Abstraction has 38705 states and 205959 transitions. [2020-09-15 00:27:48,239 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-15 00:27:48,239 INFO L276 IsEmpty]: Start isEmpty. Operand 38705 states and 205959 transitions. [2020-09-15 00:27:48,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-15 00:27:48,243 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:27:48,243 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:27:48,443 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119,48 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:27:48,444 INFO L427 AbstractCegarLoop]: === Iteration 46 === [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]=== [2020-09-15 00:27:48,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:27:48,444 INFO L82 PathProgramCache]: Analyzing trace with hash 1200868665, now seen corresponding path program 3 times [2020-09-15 00:27:48,445 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:27:48,445 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746264129] [2020-09-15 00:27:48,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:27:48,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:27:48,559 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-15 00:27:48,559 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746264129] [2020-09-15 00:27:48,559 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1121565500] [2020-09-15 00:27:48,560 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 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:27:48,684 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-09-15 00:27:48,684 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-15 00:27:48,685 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 10 conjunts are in the unsatisfiable core [2020-09-15 00:27:48,685 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:27:48,715 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-15 00:27:48,716 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:27:48,716 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 11 [2020-09-15 00:27:48,716 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970956928] [2020-09-15 00:27:48,717 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-15 00:27:48,717 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:27:48,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-15 00:27:48,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2020-09-15 00:27:48,717 INFO L87 Difference]: Start difference. First operand 38705 states and 205959 transitions. Second operand 13 states. [2020-09-15 00:27:52,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:27:52,313 INFO L93 Difference]: Finished difference Result 183485 states and 802028 transitions. [2020-09-15 00:27:52,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-15 00:27:52,314 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 27 [2020-09-15 00:27:52,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:27:52,875 INFO L225 Difference]: With dead ends: 183485 [2020-09-15 00:27:52,875 INFO L226 Difference]: Without dead ends: 183467 [2020-09-15 00:27:52,875 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1602 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1001, Invalid=3969, Unknown=0, NotChecked=0, Total=4970 [2020-09-15 00:27:54,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183467 states. [2020-09-15 00:27:57,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183467 to 38802. [2020-09-15 00:27:57,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38802 states. [2020-09-15 00:27:57,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38802 states to 38802 states and 206432 transitions. [2020-09-15 00:27:57,459 INFO L78 Accepts]: Start accepts. Automaton has 38802 states and 206432 transitions. Word has length 27 [2020-09-15 00:27:57,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:27:57,460 INFO L479 AbstractCegarLoop]: Abstraction has 38802 states and 206432 transitions. [2020-09-15 00:27:57,460 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-15 00:27:57,460 INFO L276 IsEmpty]: Start isEmpty. Operand 38802 states and 206432 transitions. [2020-09-15 00:27:57,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-15 00:27:57,463 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:27:57,464 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:27:57,664 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120,49 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:27:57,664 INFO L427 AbstractCegarLoop]: === Iteration 47 === [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]=== [2020-09-15 00:27:57,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:27:57,665 INFO L82 PathProgramCache]: Analyzing trace with hash 1222057785, now seen corresponding path program 4 times [2020-09-15 00:27:57,665 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:27:57,666 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994468812] [2020-09-15 00:27:57,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:27:57,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:27:57,772 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-15 00:27:57,772 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994468812] [2020-09-15 00:27:57,772 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [346785574] [2020-09-15 00:27:57,773 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 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:27:57,898 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-09-15 00:27:57,898 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-15 00:27:57,899 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 10 conjunts are in the unsatisfiable core [2020-09-15 00:27:57,900 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:27:57,929 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-15 00:27:57,929 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:27:57,929 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 11 [2020-09-15 00:27:57,929 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839500033] [2020-09-15 00:27:57,929 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-15 00:27:57,929 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:27:57,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-15 00:27:57,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2020-09-15 00:27:57,930 INFO L87 Difference]: Start difference. First operand 38802 states and 206432 transitions. Second operand 13 states. [2020-09-15 00:28:01,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:28:01,534 INFO L93 Difference]: Finished difference Result 183194 states and 800691 transitions. [2020-09-15 00:28:01,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-15 00:28:01,535 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 27 [2020-09-15 00:28:01,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:28:02,074 INFO L225 Difference]: With dead ends: 183194 [2020-09-15 00:28:02,074 INFO L226 Difference]: Without dead ends: 183170 [2020-09-15 00:28:02,075 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1607 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1001, Invalid=3969, Unknown=0, NotChecked=0, Total=4970 [2020-09-15 00:28:04,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183170 states. [2020-09-15 00:28:07,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183170 to 38578. [2020-09-15 00:28:07,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38578 states. [2020-09-15 00:28:07,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38578 states to 38578 states and 205224 transitions. [2020-09-15 00:28:07,394 INFO L78 Accepts]: Start accepts. Automaton has 38578 states and 205224 transitions. Word has length 27 [2020-09-15 00:28:07,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:28:07,394 INFO L479 AbstractCegarLoop]: Abstraction has 38578 states and 205224 transitions. [2020-09-15 00:28:07,395 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-15 00:28:07,395 INFO L276 IsEmpty]: Start isEmpty. Operand 38578 states and 205224 transitions. [2020-09-15 00:28:07,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-15 00:28:07,399 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:28:07,399 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:28:07,599 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121,50 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:28:07,600 INFO L427 AbstractCegarLoop]: === Iteration 48 === [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]=== [2020-09-15 00:28:07,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:28:07,601 INFO L82 PathProgramCache]: Analyzing trace with hash 1510994617, now seen corresponding path program 5 times [2020-09-15 00:28:07,601 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:28:07,601 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280531451] [2020-09-15 00:28:07,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:28:07,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:28:07,694 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-15 00:28:07,695 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280531451] [2020-09-15 00:28:07,695 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1292437120] [2020-09-15 00:28:07,695 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:28:07,822 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2020-09-15 00:28:07,822 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-15 00:28:07,823 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 10 conjunts are in the unsatisfiable core [2020-09-15 00:28:07,823 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:28:07,850 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-15 00:28:07,851 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:28:07,851 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 11 [2020-09-15 00:28:07,851 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55397114] [2020-09-15 00:28:07,851 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-15 00:28:07,851 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:28:07,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-15 00:28:07,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2020-09-15 00:28:07,852 INFO L87 Difference]: Start difference. First operand 38578 states and 205224 transitions. Second operand 13 states. [2020-09-15 00:28:13,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:28:13,187 INFO L93 Difference]: Finished difference Result 182584 states and 797818 transitions. [2020-09-15 00:28:13,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-15 00:28:13,188 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 27 [2020-09-15 00:28:13,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:28:13,772 INFO L225 Difference]: With dead ends: 182584 [2020-09-15 00:28:13,772 INFO L226 Difference]: Without dead ends: 182566 [2020-09-15 00:28:13,772 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1594 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1001, Invalid=3969, Unknown=0, NotChecked=0, Total=4970 [2020-09-15 00:28:15,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182566 states. [2020-09-15 00:28:18,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182566 to 38683. [2020-09-15 00:28:18,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38683 states. [2020-09-15 00:28:18,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38683 states to 38683 states and 205717 transitions. [2020-09-15 00:28:18,508 INFO L78 Accepts]: Start accepts. Automaton has 38683 states and 205717 transitions. Word has length 27 [2020-09-15 00:28:18,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:28:18,508 INFO L479 AbstractCegarLoop]: Abstraction has 38683 states and 205717 transitions. [2020-09-15 00:28:18,508 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-15 00:28:18,508 INFO L276 IsEmpty]: Start isEmpty. Operand 38683 states and 205717 transitions. [2020-09-15 00:28:18,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-15 00:28:18,512 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:28:18,512 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:28:18,712 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable122 [2020-09-15 00:28:18,713 INFO L427 AbstractCegarLoop]: === Iteration 49 === [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]=== [2020-09-15 00:28:18,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:28:18,713 INFO L82 PathProgramCache]: Analyzing trace with hash 1496144377, now seen corresponding path program 6 times [2020-09-15 00:28:18,713 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:28:18,714 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728132634] [2020-09-15 00:28:18,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:28:18,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:28:18,816 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-15 00:28:18,816 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728132634] [2020-09-15 00:28:18,816 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [540643388] [2020-09-15 00:28:18,817 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:28:18,922 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2020-09-15 00:28:18,922 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-15 00:28:18,924 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 10 conjunts are in the unsatisfiable core [2020-09-15 00:28:18,924 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:28:18,952 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-15 00:28:18,952 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:28:18,952 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 11 [2020-09-15 00:28:18,952 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404707481] [2020-09-15 00:28:18,953 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-15 00:28:18,953 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:28:18,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-15 00:28:18,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2020-09-15 00:28:18,953 INFO L87 Difference]: Start difference. First operand 38683 states and 205717 transitions. Second operand 13 states. [2020-09-15 00:28:21,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:28:21,887 INFO L93 Difference]: Finished difference Result 182167 states and 796056 transitions. [2020-09-15 00:28:21,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-15 00:28:21,888 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 27 [2020-09-15 00:28:21,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:28:23,303 INFO L225 Difference]: With dead ends: 182167 [2020-09-15 00:28:23,303 INFO L226 Difference]: Without dead ends: 182139 [2020-09-15 00:28:23,303 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1599 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1001, Invalid=3969, Unknown=0, NotChecked=0, Total=4970 [2020-09-15 00:28:24,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182139 states. [2020-09-15 00:28:30,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182139 to 38439. [2020-09-15 00:28:30,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38439 states. [2020-09-15 00:28:30,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38439 states to 38439 states and 204452 transitions. [2020-09-15 00:28:30,862 INFO L78 Accepts]: Start accepts. Automaton has 38439 states and 204452 transitions. Word has length 27 [2020-09-15 00:28:30,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:28:30,863 INFO L479 AbstractCegarLoop]: Abstraction has 38439 states and 204452 transitions. [2020-09-15 00:28:30,863 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-15 00:28:30,863 INFO L276 IsEmpty]: Start isEmpty. Operand 38439 states and 204452 transitions. [2020-09-15 00:28:30,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-15 00:28:30,867 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:28:30,867 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:28:31,067 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable123 [2020-09-15 00:28:31,068 INFO L427 AbstractCegarLoop]: === Iteration 50 === [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]=== [2020-09-15 00:28:31,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:28:31,068 INFO L82 PathProgramCache]: Analyzing trace with hash -1123724041, now seen corresponding path program 7 times [2020-09-15 00:28:31,069 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:28:31,069 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538254850] [2020-09-15 00:28:31,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:28:31,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:28:31,172 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-15 00:28:31,172 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538254850] [2020-09-15 00:28:31,172 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [844506781] [2020-09-15 00:28:31,173 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:28:31,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:28:31,280 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 10 conjunts are in the unsatisfiable core [2020-09-15 00:28:31,281 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:28:31,308 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-15 00:28:31,308 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:28:31,309 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 11 [2020-09-15 00:28:31,309 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228540596] [2020-09-15 00:28:31,309 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-15 00:28:31,309 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:28:31,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-15 00:28:31,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2020-09-15 00:28:31,310 INFO L87 Difference]: Start difference. First operand 38439 states and 204452 transitions. Second operand 13 states. [2020-09-15 00:28:34,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:28:34,714 INFO L93 Difference]: Finished difference Result 183258 states and 800935 transitions. [2020-09-15 00:28:34,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-15 00:28:34,715 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 27 [2020-09-15 00:28:34,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:28:35,239 INFO L225 Difference]: With dead ends: 183258 [2020-09-15 00:28:35,239 INFO L226 Difference]: Without dead ends: 183240 [2020-09-15 00:28:35,240 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1606 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1001, Invalid=3969, Unknown=0, NotChecked=0, Total=4970 [2020-09-15 00:28:37,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183240 states. [2020-09-15 00:28:40,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183240 to 38278. [2020-09-15 00:28:40,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38278 states. [2020-09-15 00:28:40,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38278 states to 38278 states and 203659 transitions. [2020-09-15 00:28:40,460 INFO L78 Accepts]: Start accepts. Automaton has 38278 states and 203659 transitions. Word has length 27 [2020-09-15 00:28:40,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:28:40,461 INFO L479 AbstractCegarLoop]: Abstraction has 38278 states and 203659 transitions. [2020-09-15 00:28:40,461 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-15 00:28:40,461 INFO L276 IsEmpty]: Start isEmpty. Operand 38278 states and 203659 transitions. [2020-09-15 00:28:40,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-15 00:28:40,465 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:28:40,465 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:28:40,665 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable124 [2020-09-15 00:28:40,666 INFO L427 AbstractCegarLoop]: === Iteration 51 === [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]=== [2020-09-15 00:28:40,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:28:40,666 INFO L82 PathProgramCache]: Analyzing trace with hash -1087684681, now seen corresponding path program 8 times [2020-09-15 00:28:40,667 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:28:40,667 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428683581] [2020-09-15 00:28:40,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:28:40,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:28:40,786 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-15 00:28:40,786 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428683581] [2020-09-15 00:28:40,787 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [424495879] [2020-09-15 00:28:40,787 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 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:28:40,912 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-09-15 00:28:40,913 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-15 00:28:40,913 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 10 conjunts are in the unsatisfiable core [2020-09-15 00:28:40,914 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:28:40,945 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-15 00:28:40,945 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:28:40,946 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 11 [2020-09-15 00:28:40,946 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148163246] [2020-09-15 00:28:40,946 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-15 00:28:40,946 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:28:40,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-15 00:28:40,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2020-09-15 00:28:40,947 INFO L87 Difference]: Start difference. First operand 38278 states and 203659 transitions. Second operand 13 states. [2020-09-15 00:28:43,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:28:43,939 INFO L93 Difference]: Finished difference Result 182849 states and 799193 transitions. [2020-09-15 00:28:43,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-15 00:28:43,940 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 27 [2020-09-15 00:28:43,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:28:48,000 INFO L225 Difference]: With dead ends: 182849 [2020-09-15 00:28:48,000 INFO L226 Difference]: Without dead ends: 182825 [2020-09-15 00:28:48,001 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1594 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1001, Invalid=3969, Unknown=0, NotChecked=0, Total=4970 [2020-09-15 00:28:49,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182825 states. [2020-09-15 00:28:51,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182825 to 37884. [2020-09-15 00:28:51,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37884 states. [2020-09-15 00:28:51,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37884 states to 37884 states and 201622 transitions. [2020-09-15 00:28:51,894 INFO L78 Accepts]: Start accepts. Automaton has 37884 states and 201622 transitions. Word has length 27 [2020-09-15 00:28:51,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:28:51,894 INFO L479 AbstractCegarLoop]: Abstraction has 37884 states and 201622 transitions. [2020-09-15 00:28:51,894 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-15 00:28:51,894 INFO L276 IsEmpty]: Start isEmpty. Operand 37884 states and 201622 transitions. [2020-09-15 00:28:51,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-15 00:28:51,898 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:28:51,898 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:28:52,099 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable125 [2020-09-15 00:28:52,099 INFO L427 AbstractCegarLoop]: === Iteration 52 === [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]=== [2020-09-15 00:28:52,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:28:52,100 INFO L82 PathProgramCache]: Analyzing trace with hash 2028959203, now seen corresponding path program 9 times [2020-09-15 00:28:52,100 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:28:52,100 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544360695] [2020-09-15 00:28:52,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:28:52,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:28:52,212 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-15 00:28:52,212 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544360695] [2020-09-15 00:28:52,213 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1759326593] [2020-09-15 00:28:52,213 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 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:28:52,333 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-09-15 00:28:52,334 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-15 00:28:52,335 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 10 conjunts are in the unsatisfiable core [2020-09-15 00:28:52,336 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:28:52,363 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-15 00:28:52,364 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:28:52,364 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 11 [2020-09-15 00:28:52,364 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946409557] [2020-09-15 00:28:52,364 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-15 00:28:52,364 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:28:52,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-15 00:28:52,365 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2020-09-15 00:28:52,365 INFO L87 Difference]: Start difference. First operand 37884 states and 201622 transitions. Second operand 13 states. [2020-09-15 00:28:56,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:28:56,091 INFO L93 Difference]: Finished difference Result 183773 states and 803153 transitions. [2020-09-15 00:28:56,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-15 00:28:56,092 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 27 [2020-09-15 00:28:56,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:28:56,753 INFO L225 Difference]: With dead ends: 183773 [2020-09-15 00:28:56,753 INFO L226 Difference]: Without dead ends: 183755 [2020-09-15 00:28:56,754 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1612 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1001, Invalid=3969, Unknown=0, NotChecked=0, Total=4970 [2020-09-15 00:28:58,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183755 states. [2020-09-15 00:29:01,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183755 to 37981. [2020-09-15 00:29:01,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37981 states. [2020-09-15 00:29:01,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37981 states to 37981 states and 202095 transitions. [2020-09-15 00:29:01,488 INFO L78 Accepts]: Start accepts. Automaton has 37981 states and 202095 transitions. Word has length 27 [2020-09-15 00:29:01,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:29:01,489 INFO L479 AbstractCegarLoop]: Abstraction has 37981 states and 202095 transitions. [2020-09-15 00:29:01,489 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-15 00:29:01,489 INFO L276 IsEmpty]: Start isEmpty. Operand 37981 states and 202095 transitions. [2020-09-15 00:29:01,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-15 00:29:01,494 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:29:01,494 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:29:01,707 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable126 [2020-09-15 00:29:01,708 INFO L427 AbstractCegarLoop]: === Iteration 53 === [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]=== [2020-09-15 00:29:01,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:29:01,709 INFO L82 PathProgramCache]: Analyzing trace with hash 2051487523, now seen corresponding path program 10 times [2020-09-15 00:29:01,709 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:29:01,709 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402755694] [2020-09-15 00:29:01,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:29:01,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:29:01,818 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-15 00:29:01,819 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402755694] [2020-09-15 00:29:01,819 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [36065552] [2020-09-15 00:29:01,819 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 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:29:01,944 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-09-15 00:29:01,944 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-15 00:29:01,945 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 10 conjunts are in the unsatisfiable core [2020-09-15 00:29:01,946 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:29:01,975 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-15 00:29:01,975 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:29:01,975 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 11 [2020-09-15 00:29:01,976 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191968019] [2020-09-15 00:29:01,976 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-15 00:29:01,976 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:29:01,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-15 00:29:01,976 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2020-09-15 00:29:01,977 INFO L87 Difference]: Start difference. First operand 37981 states and 202095 transitions. Second operand 13 states. [2020-09-15 00:29:02,817 WARN L193 SmtUtils]: Spent 701.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2020-09-15 00:29:05,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:29:05,869 INFO L93 Difference]: Finished difference Result 184574 states and 806606 transitions. [2020-09-15 00:29:05,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-15 00:29:05,870 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 27 [2020-09-15 00:29:05,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:29:06,433 INFO L225 Difference]: With dead ends: 184574 [2020-09-15 00:29:06,434 INFO L226 Difference]: Without dead ends: 184550 [2020-09-15 00:29:06,434 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1612 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1001, Invalid=3969, Unknown=0, NotChecked=0, Total=4970 [2020-09-15 00:29:11,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184550 states. [2020-09-15 00:29:13,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184550 to 37723. [2020-09-15 00:29:13,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37723 states. [2020-09-15 00:29:14,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37723 states to 37723 states and 200669 transitions. [2020-09-15 00:29:14,018 INFO L78 Accepts]: Start accepts. Automaton has 37723 states and 200669 transitions. Word has length 27 [2020-09-15 00:29:14,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:29:14,018 INFO L479 AbstractCegarLoop]: Abstraction has 37723 states and 200669 transitions. [2020-09-15 00:29:14,018 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-15 00:29:14,018 INFO L276 IsEmpty]: Start isEmpty. Operand 37723 states and 200669 transitions. [2020-09-15 00:29:14,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-15 00:29:14,022 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:29:14,023 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:29:14,228 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127,56 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:29:14,228 INFO L427 AbstractCegarLoop]: === Iteration 54 === [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]=== [2020-09-15 00:29:14,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:29:14,229 INFO L82 PathProgramCache]: Analyzing trace with hash 1310776872, now seen corresponding path program 1 times [2020-09-15 00:29:14,229 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:29:14,230 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513939478] [2020-09-15 00:29:14,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:29:14,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:29:14,299 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-15 00:29:14,299 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513939478] [2020-09-15 00:29:14,300 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1594523484] [2020-09-15 00:29:14,300 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 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:29:14,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:29:14,422 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 6 conjunts are in the unsatisfiable core [2020-09-15 00:29:14,423 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:29:14,444 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-15 00:29:14,444 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:29:14,444 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-09-15 00:29:14,445 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227142102] [2020-09-15 00:29:14,445 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-15 00:29:14,445 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:29:14,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-15 00:29:14,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-09-15 00:29:14,446 INFO L87 Difference]: Start difference. First operand 37723 states and 200669 transitions. Second operand 9 states. [2020-09-15 00:29:15,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:29:15,236 INFO L93 Difference]: Finished difference Result 87418 states and 424333 transitions. [2020-09-15 00:29:15,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-15 00:29:15,237 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 27 [2020-09-15 00:29:15,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:29:15,559 INFO L225 Difference]: With dead ends: 87418 [2020-09-15 00:29:15,560 INFO L226 Difference]: Without dead ends: 87366 [2020-09-15 00:29:15,560 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=89, Invalid=183, Unknown=0, NotChecked=0, Total=272 [2020-09-15 00:29:16,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87366 states. [2020-09-15 00:29:18,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87366 to 39181. [2020-09-15 00:29:18,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39181 states. [2020-09-15 00:29:18,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39181 states to 39181 states and 208301 transitions. [2020-09-15 00:29:18,548 INFO L78 Accepts]: Start accepts. Automaton has 39181 states and 208301 transitions. Word has length 27 [2020-09-15 00:29:18,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:29:18,548 INFO L479 AbstractCegarLoop]: Abstraction has 39181 states and 208301 transitions. [2020-09-15 00:29:18,548 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-15 00:29:18,548 INFO L276 IsEmpty]: Start isEmpty. Operand 39181 states and 208301 transitions. [2020-09-15 00:29:18,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-15 00:29:18,553 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:29:18,553 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:29:18,759 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 57 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable128 [2020-09-15 00:29:18,760 INFO L427 AbstractCegarLoop]: === Iteration 55 === [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]=== [2020-09-15 00:29:18,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:29:18,760 INFO L82 PathProgramCache]: Analyzing trace with hash -1955882141, now seen corresponding path program 11 times [2020-09-15 00:29:18,760 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:29:18,761 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261837659] [2020-09-15 00:29:18,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:29:18,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:29:18,874 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-15 00:29:18,875 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261837659] [2020-09-15 00:29:18,875 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [214964160] [2020-09-15 00:29:18,875 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:29:19,003 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2020-09-15 00:29:19,003 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-15 00:29:19,004 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 10 conjunts are in the unsatisfiable core [2020-09-15 00:29:19,005 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:29:19,035 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-15 00:29:19,035 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:29:19,035 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 11 [2020-09-15 00:29:19,036 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922661246] [2020-09-15 00:29:19,036 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-15 00:29:19,036 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:29:19,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-15 00:29:19,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2020-09-15 00:29:19,036 INFO L87 Difference]: Start difference. First operand 39181 states and 208301 transitions. Second operand 13 states. [2020-09-15 00:29:21,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:29:21,968 INFO L93 Difference]: Finished difference Result 181204 states and 790360 transitions. [2020-09-15 00:29:21,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-15 00:29:21,969 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 27 [2020-09-15 00:29:21,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:29:23,503 INFO L225 Difference]: With dead ends: 181204 [2020-09-15 00:29:23,503 INFO L226 Difference]: Without dead ends: 181186 [2020-09-15 00:29:23,503 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1592 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1001, Invalid=3969, Unknown=0, NotChecked=0, Total=4970 [2020-09-15 00:29:25,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181186 states. [2020-09-15 00:29:30,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181186 to 39282. [2020-09-15 00:29:30,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39282 states. [2020-09-15 00:29:30,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39282 states to 39282 states and 208786 transitions. [2020-09-15 00:29:30,797 INFO L78 Accepts]: Start accepts. Automaton has 39282 states and 208786 transitions. Word has length 27 [2020-09-15 00:29:30,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:29:30,797 INFO L479 AbstractCegarLoop]: Abstraction has 39282 states and 208786 transitions. [2020-09-15 00:29:30,797 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-15 00:29:30,797 INFO L276 IsEmpty]: Start isEmpty. Operand 39282 states and 208786 transitions. [2020-09-15 00:29:30,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-15 00:29:30,801 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:29:30,801 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:29:31,002 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129,58 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:29:31,002 INFO L427 AbstractCegarLoop]: === Iteration 56 === [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]=== [2020-09-15 00:29:31,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:29:31,003 INFO L82 PathProgramCache]: Analyzing trace with hash -1969393181, now seen corresponding path program 12 times [2020-09-15 00:29:31,003 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:29:31,003 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736470389] [2020-09-15 00:29:31,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:29:31,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:29:31,119 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-15 00:29:31,119 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736470389] [2020-09-15 00:29:31,119 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1560212820] [2020-09-15 00:29:31,119 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:29:31,244 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-09-15 00:29:31,245 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-15 00:29:31,246 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 10 conjunts are in the unsatisfiable core [2020-09-15 00:29:31,246 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:29:31,275 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-15 00:29:31,275 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:29:31,275 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 11 [2020-09-15 00:29:31,276 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507978153] [2020-09-15 00:29:31,276 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-15 00:29:31,276 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:29:31,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-15 00:29:31,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2020-09-15 00:29:31,277 INFO L87 Difference]: Start difference. First operand 39282 states and 208786 transitions. Second operand 13 states. [2020-09-15 00:29:34,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:29:34,939 INFO L93 Difference]: Finished difference Result 181788 states and 792986 transitions. [2020-09-15 00:29:34,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-15 00:29:34,940 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 27 [2020-09-15 00:29:34,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:29:35,635 INFO L225 Difference]: With dead ends: 181788 [2020-09-15 00:29:35,636 INFO L226 Difference]: Without dead ends: 181760 [2020-09-15 00:29:35,636 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1606 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1001, Invalid=3969, Unknown=0, NotChecked=0, Total=4970 [2020-09-15 00:29:37,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181760 states. [2020-09-15 00:29:40,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181760 to 39046. [2020-09-15 00:29:40,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39046 states. [2020-09-15 00:29:40,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39046 states to 39046 states and 207541 transitions. [2020-09-15 00:29:40,189 INFO L78 Accepts]: Start accepts. Automaton has 39046 states and 207541 transitions. Word has length 27 [2020-09-15 00:29:40,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:29:40,189 INFO L479 AbstractCegarLoop]: Abstraction has 39046 states and 207541 transitions. [2020-09-15 00:29:40,189 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-15 00:29:40,190 INFO L276 IsEmpty]: Start isEmpty. Operand 39046 states and 207541 transitions. [2020-09-15 00:29:40,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-15 00:29:40,195 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:29:40,196 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:29:40,410 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable130 [2020-09-15 00:29:40,411 INFO L427 AbstractCegarLoop]: === Iteration 57 === [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]=== [2020-09-15 00:29:40,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:29:40,411 INFO L82 PathProgramCache]: Analyzing trace with hash -1977356605, now seen corresponding path program 13 times [2020-09-15 00:29:40,411 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:29:40,412 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645065940] [2020-09-15 00:29:40,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:29:40,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:29:40,529 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-15 00:29:40,529 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645065940] [2020-09-15 00:29:40,529 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:29:40,529 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-15 00:29:40,530 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143347024] [2020-09-15 00:29:40,530 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-15 00:29:40,530 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:29:40,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-15 00:29:40,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-09-15 00:29:40,531 INFO L87 Difference]: Start difference. First operand 39046 states and 207541 transitions. Second operand 11 states. [2020-09-15 00:29:44,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:29:44,090 INFO L93 Difference]: Finished difference Result 182119 states and 794828 transitions. [2020-09-15 00:29:44,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-15 00:29:44,091 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 27 [2020-09-15 00:29:44,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:29:44,614 INFO L225 Difference]: With dead ends: 182119 [2020-09-15 00:29:44,614 INFO L226 Difference]: Without dead ends: 182101 [2020-09-15 00:29:44,615 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1555 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=941, Invalid=3751, Unknown=0, NotChecked=0, Total=4692 [2020-09-15 00:29:46,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182101 states. [2020-09-15 00:29:51,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182101 to 38885. [2020-09-15 00:29:51,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38885 states. [2020-09-15 00:29:51,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38885 states to 38885 states and 206748 transitions. [2020-09-15 00:29:51,973 INFO L78 Accepts]: Start accepts. Automaton has 38885 states and 206748 transitions. Word has length 27 [2020-09-15 00:29:51,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:29:51,973 INFO L479 AbstractCegarLoop]: Abstraction has 38885 states and 206748 transitions. [2020-09-15 00:29:51,973 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-15 00:29:51,973 INFO L276 IsEmpty]: Start isEmpty. Operand 38885 states and 206748 transitions. [2020-09-15 00:29:51,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-15 00:29:51,977 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:29:51,977 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:29:51,977 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2020-09-15 00:29:51,977 INFO L427 AbstractCegarLoop]: === Iteration 58 === [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]=== [2020-09-15 00:29:51,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:29:51,978 INFO L82 PathProgramCache]: Analyzing trace with hash -1956167485, now seen corresponding path program 14 times [2020-09-15 00:29:51,978 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:29:51,978 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083523121] [2020-09-15 00:29:51,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:29:51,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:29:52,090 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-15 00:29:52,090 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083523121] [2020-09-15 00:29:52,090 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:29:52,091 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-15 00:29:52,091 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221194764] [2020-09-15 00:29:52,091 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-15 00:29:52,092 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:29:52,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-15 00:29:52,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-09-15 00:29:52,092 INFO L87 Difference]: Start difference. First operand 38885 states and 206748 transitions. Second operand 11 states. [2020-09-15 00:29:55,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:29:55,472 INFO L93 Difference]: Finished difference Result 182770 states and 797712 transitions. [2020-09-15 00:29:55,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-15 00:29:55,473 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 27 [2020-09-15 00:29:55,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:29:55,984 INFO L225 Difference]: With dead ends: 182770 [2020-09-15 00:29:55,984 INFO L226 Difference]: Without dead ends: 182746 [2020-09-15 00:29:55,985 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1559 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=941, Invalid=3751, Unknown=0, NotChecked=0, Total=4692 [2020-09-15 00:29:58,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182746 states. [2020-09-15 00:30:00,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182746 to 38499. [2020-09-15 00:30:00,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38499 states. [2020-09-15 00:30:01,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38499 states to 38499 states and 204735 transitions. [2020-09-15 00:30:01,401 INFO L78 Accepts]: Start accepts. Automaton has 38499 states and 204735 transitions. Word has length 27 [2020-09-15 00:30:01,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:30:01,401 INFO L479 AbstractCegarLoop]: Abstraction has 38499 states and 204735 transitions. [2020-09-15 00:30:01,401 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-15 00:30:01,402 INFO L276 IsEmpty]: Start isEmpty. Operand 38499 states and 204735 transitions. [2020-09-15 00:30:01,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-15 00:30:01,406 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:30:01,406 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:30:01,406 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2020-09-15 00:30:01,406 INFO L427 AbstractCegarLoop]: === Iteration 59 === [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]=== [2020-09-15 00:30:01,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:30:01,407 INFO L82 PathProgramCache]: Analyzing trace with hash -690385405, now seen corresponding path program 15 times [2020-09-15 00:30:01,407 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:30:01,407 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820667403] [2020-09-15 00:30:01,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:30:01,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:30:01,521 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-15 00:30:01,522 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820667403] [2020-09-15 00:30:01,522 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:30:01,522 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-15 00:30:01,522 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855730699] [2020-09-15 00:30:01,522 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-15 00:30:01,522 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:30:01,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-15 00:30:01,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-09-15 00:30:01,523 INFO L87 Difference]: Start difference. First operand 38499 states and 204735 transitions. Second operand 11 states. [2020-09-15 00:30:04,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:30:04,455 INFO L93 Difference]: Finished difference Result 181153 states and 790470 transitions. [2020-09-15 00:30:04,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-15 00:30:04,455 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 27 [2020-09-15 00:30:04,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:30:04,971 INFO L225 Difference]: With dead ends: 181153 [2020-09-15 00:30:04,971 INFO L226 Difference]: Without dead ends: 181135 [2020-09-15 00:30:04,971 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1561 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=941, Invalid=3751, Unknown=0, NotChecked=0, Total=4692 [2020-09-15 00:30:07,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181135 states. [2020-09-15 00:30:09,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181135 to 38208. [2020-09-15 00:30:09,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38208 states. [2020-09-15 00:30:09,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38208 states to 38208 states and 203398 transitions. [2020-09-15 00:30:09,349 INFO L78 Accepts]: Start accepts. Automaton has 38208 states and 203398 transitions. Word has length 27 [2020-09-15 00:30:09,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:30:09,349 INFO L479 AbstractCegarLoop]: Abstraction has 38208 states and 203398 transitions. [2020-09-15 00:30:09,349 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-15 00:30:09,350 INFO L276 IsEmpty]: Start isEmpty. Operand 38208 states and 203398 transitions. [2020-09-15 00:30:09,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-15 00:30:09,354 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:30:09,354 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:30:09,354 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2020-09-15 00:30:09,354 INFO L427 AbstractCegarLoop]: === Iteration 60 === [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]=== [2020-09-15 00:30:09,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:30:09,355 INFO L82 PathProgramCache]: Analyzing trace with hash -667857085, now seen corresponding path program 16 times [2020-09-15 00:30:09,355 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:30:09,355 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783534859] [2020-09-15 00:30:09,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:30:09,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:30:09,467 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-15 00:30:09,468 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783534859] [2020-09-15 00:30:09,468 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:30:09,468 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-15 00:30:09,469 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400181247] [2020-09-15 00:30:09,469 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-15 00:30:09,469 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:30:09,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-15 00:30:09,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-09-15 00:30:09,470 INFO L87 Difference]: Start difference. First operand 38208 states and 203398 transitions. Second operand 11 states. [2020-09-15 00:30:12,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:30:12,629 INFO L93 Difference]: Finished difference Result 181957 states and 793915 transitions. [2020-09-15 00:30:12,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-15 00:30:12,630 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 27 [2020-09-15 00:30:12,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:30:13,148 INFO L225 Difference]: With dead ends: 181957 [2020-09-15 00:30:13,148 INFO L226 Difference]: Without dead ends: 181933 [2020-09-15 00:30:13,148 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1565 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=941, Invalid=3751, Unknown=0, NotChecked=0, Total=4692 [2020-09-15 00:30:18,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181933 states. [2020-09-15 00:30:20,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181933 to 37822. [2020-09-15 00:30:20,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37822 states. [2020-09-15 00:30:20,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37822 states to 37822 states and 201385 transitions. [2020-09-15 00:30:20,377 INFO L78 Accepts]: Start accepts. Automaton has 37822 states and 201385 transitions. Word has length 27 [2020-09-15 00:30:20,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:30:20,377 INFO L479 AbstractCegarLoop]: Abstraction has 37822 states and 201385 transitions. [2020-09-15 00:30:20,378 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-15 00:30:20,378 INFO L276 IsEmpty]: Start isEmpty. Operand 37822 states and 201385 transitions. [2020-09-15 00:30:20,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-15 00:30:20,382 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:30:20,382 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:30:20,382 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2020-09-15 00:30:20,382 INFO L427 AbstractCegarLoop]: === Iteration 61 === [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]=== [2020-09-15 00:30:20,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:30:20,382 INFO L82 PathProgramCache]: Analyzing trace with hash 1485355099, now seen corresponding path program 1 times [2020-09-15 00:30:20,382 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:30:20,382 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374035007] [2020-09-15 00:30:20,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:30:20,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:30:20,455 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-15 00:30:20,455 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374035007] [2020-09-15 00:30:20,456 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [681553728] [2020-09-15 00:30:20,456 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 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:30:20,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:30:20,579 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 6 conjunts are in the unsatisfiable core [2020-09-15 00:30:20,579 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:30:20,600 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-15 00:30:20,601 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:30:20,601 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-09-15 00:30:20,601 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387105889] [2020-09-15 00:30:20,601 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-15 00:30:20,602 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:30:20,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-15 00:30:20,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-09-15 00:30:20,602 INFO L87 Difference]: Start difference. First operand 37822 states and 201385 transitions. Second operand 9 states. [2020-09-15 00:30:21,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:30:21,869 INFO L93 Difference]: Finished difference Result 90020 states and 438095 transitions. [2020-09-15 00:30:21,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-15 00:30:21,869 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 27 [2020-09-15 00:30:21,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:30:22,153 INFO L225 Difference]: With dead ends: 90020 [2020-09-15 00:30:22,153 INFO L226 Difference]: Without dead ends: 89960 [2020-09-15 00:30:22,154 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=89, Invalid=183, Unknown=0, NotChecked=0, Total=272 [2020-09-15 00:30:23,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89960 states. [2020-09-15 00:30:24,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89960 to 39411. [2020-09-15 00:30:24,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39411 states. [2020-09-15 00:30:25,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39411 states to 39411 states and 210063 transitions. [2020-09-15 00:30:25,454 INFO L78 Accepts]: Start accepts. Automaton has 39411 states and 210063 transitions. Word has length 27 [2020-09-15 00:30:25,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:30:25,454 INFO L479 AbstractCegarLoop]: Abstraction has 39411 states and 210063 transitions. [2020-09-15 00:30:25,454 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-15 00:30:25,455 INFO L276 IsEmpty]: Start isEmpty. Operand 39411 states and 210063 transitions. [2020-09-15 00:30:25,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-15 00:30:25,460 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:30:25,460 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:30:25,661 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 60 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable135 [2020-09-15 00:30:25,661 INFO L427 AbstractCegarLoop]: === Iteration 62 === [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]=== [2020-09-15 00:30:25,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:30:25,662 INFO L82 PathProgramCache]: Analyzing trace with hash -1781288445, now seen corresponding path program 17 times [2020-09-15 00:30:25,662 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:30:25,662 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298318482] [2020-09-15 00:30:25,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:30:25,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:30:25,776 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-15 00:30:25,776 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298318482] [2020-09-15 00:30:25,776 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:30:25,777 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-15 00:30:25,777 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125584415] [2020-09-15 00:30:25,777 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-15 00:30:25,777 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:30:25,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-15 00:30:25,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-09-15 00:30:25,778 INFO L87 Difference]: Start difference. First operand 39411 states and 210063 transitions. Second operand 11 states. [2020-09-15 00:30:28,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:30:28,674 INFO L93 Difference]: Finished difference Result 181463 states and 790579 transitions. [2020-09-15 00:30:28,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-15 00:30:28,675 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 27 [2020-09-15 00:30:28,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:30:29,245 INFO L225 Difference]: With dead ends: 181463 [2020-09-15 00:30:29,245 INFO L226 Difference]: Without dead ends: 181445 [2020-09-15 00:30:29,245 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1555 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=941, Invalid=3751, Unknown=0, NotChecked=0, Total=4692 [2020-09-15 00:30:32,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181445 states. [2020-09-15 00:30:33,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181445 to 39508. [2020-09-15 00:30:33,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39508 states. [2020-09-15 00:30:33,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39508 states to 39508 states and 210536 transitions. [2020-09-15 00:30:33,913 INFO L78 Accepts]: Start accepts. Automaton has 39508 states and 210536 transitions. Word has length 27 [2020-09-15 00:30:33,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:30:33,913 INFO L479 AbstractCegarLoop]: Abstraction has 39508 states and 210536 transitions. [2020-09-15 00:30:33,913 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-15 00:30:33,914 INFO L276 IsEmpty]: Start isEmpty. Operand 39508 states and 210536 transitions. [2020-09-15 00:30:33,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-15 00:30:33,918 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:30:33,918 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:30:33,918 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2020-09-15 00:30:33,918 INFO L427 AbstractCegarLoop]: === Iteration 63 === [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]=== [2020-09-15 00:30:33,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:30:33,919 INFO L82 PathProgramCache]: Analyzing trace with hash -1779949245, now seen corresponding path program 18 times [2020-09-15 00:30:33,919 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:30:33,919 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865475863] [2020-09-15 00:30:33,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:30:33,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:30:34,032 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-15 00:30:34,032 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865475863] [2020-09-15 00:30:34,032 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:30:34,033 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-15 00:30:34,033 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288275643] [2020-09-15 00:30:34,033 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-15 00:30:34,033 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:30:34,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-15 00:30:34,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-09-15 00:30:34,034 INFO L87 Difference]: Start difference. First operand 39508 states and 210536 transitions. Second operand 11 states. [2020-09-15 00:30:34,821 WARN L193 SmtUtils]: Spent 382.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-09-15 00:30:37,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:30:37,424 INFO L93 Difference]: Finished difference Result 181054 states and 788837 transitions. [2020-09-15 00:30:37,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-15 00:30:37,424 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 27 [2020-09-15 00:30:37,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:30:37,938 INFO L225 Difference]: With dead ends: 181054 [2020-09-15 00:30:37,938 INFO L226 Difference]: Without dead ends: 181026 [2020-09-15 00:30:37,939 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1565 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=941, Invalid=3751, Unknown=0, NotChecked=0, Total=4692 [2020-09-15 00:30:40,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181026 states. [2020-09-15 00:30:42,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181026 to 39280. [2020-09-15 00:30:42,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39280 states. [2020-09-15 00:30:42,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39280 states to 39280 states and 209319 transitions. [2020-09-15 00:30:42,506 INFO L78 Accepts]: Start accepts. Automaton has 39280 states and 209319 transitions. Word has length 27 [2020-09-15 00:30:42,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:30:42,506 INFO L479 AbstractCegarLoop]: Abstraction has 39280 states and 209319 transitions. [2020-09-15 00:30:42,506 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-15 00:30:42,506 INFO L276 IsEmpty]: Start isEmpty. Operand 39280 states and 209319 transitions. [2020-09-15 00:30:42,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-15 00:30:42,511 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:30:42,511 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:30:42,511 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2020-09-15 00:30:42,511 INFO L427 AbstractCegarLoop]: === Iteration 64 === [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]=== [2020-09-15 00:30:42,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:30:42,512 INFO L82 PathProgramCache]: Analyzing trace with hash -639654315, now seen corresponding path program 2 times [2020-09-15 00:30:42,512 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:30:42,512 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751349970] [2020-09-15 00:30:42,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:30:42,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:30:42,578 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-09-15 00:30:42,579 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751349970] [2020-09-15 00:30:42,579 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:30:42,579 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-15 00:30:42,579 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007687589] [2020-09-15 00:30:42,580 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-15 00:30:42,580 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:30:42,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-15 00:30:42,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-15 00:30:42,580 INFO L87 Difference]: Start difference. First operand 39280 states and 209319 transitions. Second operand 7 states. [2020-09-15 00:30:45,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:30:45,594 INFO L93 Difference]: Finished difference Result 90032 states and 438659 transitions. [2020-09-15 00:30:45,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-15 00:30:45,595 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 27 [2020-09-15 00:30:45,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:30:45,882 INFO L225 Difference]: With dead ends: 90032 [2020-09-15 00:30:45,882 INFO L226 Difference]: Without dead ends: 89955 [2020-09-15 00:30:45,883 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-09-15 00:30:46,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89955 states. [2020-09-15 00:30:47,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89955 to 40208. [2020-09-15 00:30:47,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40208 states. [2020-09-15 00:30:48,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40208 states to 40208 states and 214272 transitions. [2020-09-15 00:30:48,101 INFO L78 Accepts]: Start accepts. Automaton has 40208 states and 214272 transitions. Word has length 27 [2020-09-15 00:30:48,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:30:48,101 INFO L479 AbstractCegarLoop]: Abstraction has 40208 states and 214272 transitions. [2020-09-15 00:30:48,101 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-15 00:30:48,101 INFO L276 IsEmpty]: Start isEmpty. Operand 40208 states and 214272 transitions. [2020-09-15 00:30:48,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-15 00:30:48,106 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:30:48,107 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:30:48,107 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2020-09-15 00:30:48,107 INFO L427 AbstractCegarLoop]: === Iteration 65 === [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]=== [2020-09-15 00:30:48,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:30:48,107 INFO L82 PathProgramCache]: Analyzing trace with hash -639652920, now seen corresponding path program 2 times [2020-09-15 00:30:48,107 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:30:48,108 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769448747] [2020-09-15 00:30:48,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:30:48,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:30:48,176 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-09-15 00:30:48,176 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769448747] [2020-09-15 00:30:48,177 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:30:48,177 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-15 00:30:48,177 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848093122] [2020-09-15 00:30:48,177 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-15 00:30:48,177 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:30:48,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-15 00:30:48,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-15 00:30:48,178 INFO L87 Difference]: Start difference. First operand 40208 states and 214272 transitions. Second operand 7 states. [2020-09-15 00:30:49,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:30:49,622 INFO L93 Difference]: Finished difference Result 90501 states and 440366 transitions. [2020-09-15 00:30:49,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-15 00:30:49,623 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 27 [2020-09-15 00:30:49,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:30:49,908 INFO L225 Difference]: With dead ends: 90501 [2020-09-15 00:30:49,908 INFO L226 Difference]: Without dead ends: 90424 [2020-09-15 00:30:49,908 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-09-15 00:30:50,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90424 states. [2020-09-15 00:30:52,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90424 to 40817. [2020-09-15 00:30:52,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40817 states. [2020-09-15 00:30:52,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40817 states to 40817 states and 217501 transitions. [2020-09-15 00:30:52,248 INFO L78 Accepts]: Start accepts. Automaton has 40817 states and 217501 transitions. Word has length 27 [2020-09-15 00:30:52,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:30:52,248 INFO L479 AbstractCegarLoop]: Abstraction has 40817 states and 217501 transitions. [2020-09-15 00:30:52,248 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-15 00:30:52,248 INFO L276 IsEmpty]: Start isEmpty. Operand 40817 states and 217501 transitions. [2020-09-15 00:30:52,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-15 00:30:52,253 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:30:52,253 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:30:52,254 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2020-09-15 00:30:52,254 INFO L427 AbstractCegarLoop]: === Iteration 66 === [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]=== [2020-09-15 00:30:52,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:30:52,254 INFO L82 PathProgramCache]: Analyzing trace with hash -639668389, now seen corresponding path program 2 times [2020-09-15 00:30:52,254 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:30:52,254 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432466063] [2020-09-15 00:30:52,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:30:52,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:30:52,322 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-09-15 00:30:52,322 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432466063] [2020-09-15 00:30:52,322 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:30:52,323 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-15 00:30:52,323 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771153348] [2020-09-15 00:30:52,323 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-15 00:30:52,323 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:30:52,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-15 00:30:52,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-15 00:30:52,324 INFO L87 Difference]: Start difference. First operand 40817 states and 217501 transitions. Second operand 7 states. [2020-09-15 00:30:53,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:30:53,657 INFO L93 Difference]: Finished difference Result 91389 states and 444541 transitions. [2020-09-15 00:30:53,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-15 00:30:53,657 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 27 [2020-09-15 00:30:53,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:30:53,970 INFO L225 Difference]: With dead ends: 91389 [2020-09-15 00:30:53,970 INFO L226 Difference]: Without dead ends: 91312 [2020-09-15 00:30:53,971 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-09-15 00:30:55,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91312 states. [2020-09-15 00:30:56,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91312 to 41653. [2020-09-15 00:30:56,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41653 states. [2020-09-15 00:30:57,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41653 states to 41653 states and 221647 transitions. [2020-09-15 00:30:57,340 INFO L78 Accepts]: Start accepts. Automaton has 41653 states and 221647 transitions. Word has length 27 [2020-09-15 00:30:57,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:30:57,340 INFO L479 AbstractCegarLoop]: Abstraction has 41653 states and 221647 transitions. [2020-09-15 00:30:57,340 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-15 00:30:57,340 INFO L276 IsEmpty]: Start isEmpty. Operand 41653 states and 221647 transitions. [2020-09-15 00:30:57,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-15 00:30:57,345 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:30:57,345 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:30:57,346 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2020-09-15 00:30:57,346 INFO L427 AbstractCegarLoop]: === Iteration 67 === [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]=== [2020-09-15 00:30:57,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:30:57,346 INFO L82 PathProgramCache]: Analyzing trace with hash -639630848, now seen corresponding path program 1 times [2020-09-15 00:30:57,346 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:30:57,346 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956489902] [2020-09-15 00:30:57,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:30:57,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:30:57,412 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-09-15 00:30:57,413 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956489902] [2020-09-15 00:30:57,413 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:30:57,413 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-15 00:30:57,413 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046656762] [2020-09-15 00:30:57,414 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-15 00:30:57,414 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:30:57,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-15 00:30:57,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-15 00:30:57,414 INFO L87 Difference]: Start difference. First operand 41653 states and 221647 transitions. Second operand 7 states. [2020-09-15 00:30:58,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:30:58,247 INFO L93 Difference]: Finished difference Result 96066 states and 468402 transitions. [2020-09-15 00:30:58,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-15 00:30:58,248 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 27 [2020-09-15 00:30:58,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:30:58,553 INFO L225 Difference]: With dead ends: 96066 [2020-09-15 00:30:58,553 INFO L226 Difference]: Without dead ends: 95989 [2020-09-15 00:30:58,553 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-09-15 00:30:59,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95989 states. [2020-09-15 00:31:01,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95989 to 44034. [2020-09-15 00:31:01,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44034 states. [2020-09-15 00:31:02,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44034 states to 44034 states and 234037 transitions. [2020-09-15 00:31:02,004 INFO L78 Accepts]: Start accepts. Automaton has 44034 states and 234037 transitions. Word has length 27 [2020-09-15 00:31:02,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:31:02,004 INFO L479 AbstractCegarLoop]: Abstraction has 44034 states and 234037 transitions. [2020-09-15 00:31:02,004 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-15 00:31:02,004 INFO L276 IsEmpty]: Start isEmpty. Operand 44034 states and 234037 transitions. [2020-09-15 00:31:02,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-15 00:31:02,010 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:31:02,010 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:31:02,010 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2020-09-15 00:31:02,010 INFO L427 AbstractCegarLoop]: === Iteration 68 === [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]=== [2020-09-15 00:31:02,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:31:02,010 INFO L82 PathProgramCache]: Analyzing trace with hash -616120448, now seen corresponding path program 2 times [2020-09-15 00:31:02,010 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:31:02,011 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820119575] [2020-09-15 00:31:02,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:31:02,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:31:02,077 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-09-15 00:31:02,077 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820119575] [2020-09-15 00:31:02,077 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:31:02,078 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-15 00:31:02,078 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113351322] [2020-09-15 00:31:02,078 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-15 00:31:02,079 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:31:02,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-15 00:31:02,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-15 00:31:02,079 INFO L87 Difference]: Start difference. First operand 44034 states and 234037 transitions. Second operand 7 states. [2020-09-15 00:31:02,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:31:02,844 INFO L93 Difference]: Finished difference Result 97335 states and 474289 transitions. [2020-09-15 00:31:02,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-15 00:31:02,844 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 27 [2020-09-15 00:31:02,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:31:03,148 INFO L225 Difference]: With dead ends: 97335 [2020-09-15 00:31:03,148 INFO L226 Difference]: Without dead ends: 97258 [2020-09-15 00:31:03,148 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-09-15 00:31:04,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97258 states. [2020-09-15 00:31:06,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97258 to 45832. [2020-09-15 00:31:06,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45832 states. [2020-09-15 00:31:06,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45832 states to 45832 states and 243883 transitions. [2020-09-15 00:31:06,532 INFO L78 Accepts]: Start accepts. Automaton has 45832 states and 243883 transitions. Word has length 27 [2020-09-15 00:31:06,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:31:06,532 INFO L479 AbstractCegarLoop]: Abstraction has 45832 states and 243883 transitions. [2020-09-15 00:31:06,533 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-15 00:31:06,533 INFO L276 IsEmpty]: Start isEmpty. Operand 45832 states and 243883 transitions. [2020-09-15 00:31:06,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-15 00:31:06,538 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:31:06,539 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:31:06,539 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2020-09-15 00:31:06,539 INFO L427 AbstractCegarLoop]: === Iteration 69 === [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]=== [2020-09-15 00:31:06,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:31:06,539 INFO L82 PathProgramCache]: Analyzing trace with hash -263020797, now seen corresponding path program 19 times [2020-09-15 00:31:06,539 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:31:06,539 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607354156] [2020-09-15 00:31:06,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:31:06,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:31:06,652 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-15 00:31:06,652 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607354156] [2020-09-15 00:31:06,652 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:31:06,652 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-15 00:31:06,653 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004017388] [2020-09-15 00:31:06,653 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-15 00:31:06,653 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:31:06,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-15 00:31:06,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-09-15 00:31:06,653 INFO L87 Difference]: Start difference. First operand 45832 states and 243883 transitions. Second operand 11 states. [2020-09-15 00:31:09,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:31:09,644 INFO L93 Difference]: Finished difference Result 206462 states and 913897 transitions. [2020-09-15 00:31:09,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-15 00:31:09,644 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 27 [2020-09-15 00:31:09,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:31:11,535 INFO L225 Difference]: With dead ends: 206462 [2020-09-15 00:31:11,535 INFO L226 Difference]: Without dead ends: 206438 [2020-09-15 00:31:11,535 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1541 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=941, Invalid=3751, Unknown=0, NotChecked=0, Total=4692 [2020-09-15 00:31:13,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206438 states. [2020-09-15 00:31:19,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206438 to 45730. [2020-09-15 00:31:19,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45730 states. [2020-09-15 00:31:20,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45730 states to 45730 states and 243333 transitions. [2020-09-15 00:31:20,169 INFO L78 Accepts]: Start accepts. Automaton has 45730 states and 243333 transitions. Word has length 27 [2020-09-15 00:31:20,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:31:20,169 INFO L479 AbstractCegarLoop]: Abstraction has 45730 states and 243333 transitions. [2020-09-15 00:31:20,169 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-15 00:31:20,169 INFO L276 IsEmpty]: Start isEmpty. Operand 45730 states and 243333 transitions. [2020-09-15 00:31:20,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-15 00:31:20,175 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:31:20,175 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:31:20,175 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2020-09-15 00:31:20,175 INFO L427 AbstractCegarLoop]: === Iteration 70 === [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]=== [2020-09-15 00:31:20,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:31:20,176 INFO L82 PathProgramCache]: Analyzing trace with hash -277871037, now seen corresponding path program 20 times [2020-09-15 00:31:20,176 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:31:20,176 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714748194] [2020-09-15 00:31:20,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:31:20,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:31:20,276 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-15 00:31:20,276 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714748194] [2020-09-15 00:31:20,277 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:31:20,277 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-15 00:31:20,277 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143683548] [2020-09-15 00:31:20,277 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-15 00:31:20,278 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:31:20,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-15 00:31:20,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-09-15 00:31:20,278 INFO L87 Difference]: Start difference. First operand 45730 states and 243333 transitions. Second operand 11 states. [2020-09-15 00:31:24,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:31:24,187 INFO L93 Difference]: Finished difference Result 205970 states and 911791 transitions. [2020-09-15 00:31:24,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-15 00:31:24,187 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 27 [2020-09-15 00:31:24,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:31:24,826 INFO L225 Difference]: With dead ends: 205970 [2020-09-15 00:31:24,827 INFO L226 Difference]: Without dead ends: 205940 [2020-09-15 00:31:24,827 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1548 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=941, Invalid=3751, Unknown=0, NotChecked=0, Total=4692 [2020-09-15 00:31:26,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205940 states. [2020-09-15 00:31:29,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205940 to 45335. [2020-09-15 00:31:29,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45335 states. [2020-09-15 00:31:29,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45335 states to 45335 states and 241261 transitions. [2020-09-15 00:31:29,895 INFO L78 Accepts]: Start accepts. Automaton has 45335 states and 241261 transitions. Word has length 27 [2020-09-15 00:31:29,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:31:29,895 INFO L479 AbstractCegarLoop]: Abstraction has 45335 states and 241261 transitions. [2020-09-15 00:31:29,895 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-15 00:31:29,895 INFO L276 IsEmpty]: Start isEmpty. Operand 45335 states and 241261 transitions. [2020-09-15 00:31:29,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-15 00:31:29,901 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:31:29,901 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:31:29,901 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2020-09-15 00:31:29,901 INFO L427 AbstractCegarLoop]: === Iteration 71 === [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]=== [2020-09-15 00:31:29,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:31:29,901 INFO L82 PathProgramCache]: Analyzing trace with hash 1023950403, now seen corresponding path program 21 times [2020-09-15 00:31:29,902 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:31:29,902 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701735415] [2020-09-15 00:31:29,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:31:29,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:31:30,031 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-15 00:31:30,032 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701735415] [2020-09-15 00:31:30,032 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:31:30,032 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-15 00:31:30,032 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979624034] [2020-09-15 00:31:30,033 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-15 00:31:30,033 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:31:30,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-15 00:31:30,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-09-15 00:31:30,034 INFO L87 Difference]: Start difference. First operand 45335 states and 241261 transitions. Second operand 11 states. [2020-09-15 00:31:31,677 WARN L193 SmtUtils]: Spent 605.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2020-09-15 00:31:33,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:31:33,903 INFO L93 Difference]: Finished difference Result 205404 states and 909139 transitions. [2020-09-15 00:31:33,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-15 00:31:33,904 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 27 [2020-09-15 00:31:33,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:31:34,504 INFO L225 Difference]: With dead ends: 205404 [2020-09-15 00:31:34,504 INFO L226 Difference]: Without dead ends: 205380 [2020-09-15 00:31:34,505 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1547 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=941, Invalid=3751, Unknown=0, NotChecked=0, Total=4692 [2020-09-15 00:31:37,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205380 states. [2020-09-15 00:31:43,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205380 to 45076. [2020-09-15 00:31:43,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45076 states. [2020-09-15 00:31:43,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45076 states to 45076 states and 240064 transitions. [2020-09-15 00:31:43,841 INFO L78 Accepts]: Start accepts. Automaton has 45076 states and 240064 transitions. Word has length 27 [2020-09-15 00:31:43,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:31:43,841 INFO L479 AbstractCegarLoop]: Abstraction has 45076 states and 240064 transitions. [2020-09-15 00:31:43,841 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-15 00:31:43,841 INFO L276 IsEmpty]: Start isEmpty. Operand 45076 states and 240064 transitions. [2020-09-15 00:31:43,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-15 00:31:43,847 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:31:43,847 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:31:43,847 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2020-09-15 00:31:43,847 INFO L427 AbstractCegarLoop]: === Iteration 72 === [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]=== [2020-09-15 00:31:43,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:31:43,847 INFO L82 PathProgramCache]: Analyzing trace with hash 1010439363, now seen corresponding path program 22 times [2020-09-15 00:31:43,848 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:31:43,848 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898421888] [2020-09-15 00:31:43,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:31:43,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:31:43,962 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-15 00:31:43,963 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898421888] [2020-09-15 00:31:43,963 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:31:43,963 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-15 00:31:43,963 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153728778] [2020-09-15 00:31:43,963 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-15 00:31:43,964 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:31:43,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-15 00:31:43,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-09-15 00:31:43,964 INFO L87 Difference]: Start difference. First operand 45076 states and 240064 transitions. Second operand 11 states. [2020-09-15 00:31:47,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:31:47,784 INFO L93 Difference]: Finished difference Result 205143 states and 907975 transitions. [2020-09-15 00:31:47,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-15 00:31:47,785 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 27 [2020-09-15 00:31:47,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:31:48,399 INFO L225 Difference]: With dead ends: 205143 [2020-09-15 00:31:48,399 INFO L226 Difference]: Without dead ends: 205113 [2020-09-15 00:31:48,400 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1562 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=941, Invalid=3751, Unknown=0, NotChecked=0, Total=4692 [2020-09-15 00:31:50,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205113 states. [2020-09-15 00:31:53,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205113 to 44685. [2020-09-15 00:31:53,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44685 states. [2020-09-15 00:31:54,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44685 states to 44685 states and 238000 transitions. [2020-09-15 00:31:54,390 INFO L78 Accepts]: Start accepts. Automaton has 44685 states and 238000 transitions. Word has length 27 [2020-09-15 00:31:54,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:31:54,390 INFO L479 AbstractCegarLoop]: Abstraction has 44685 states and 238000 transitions. [2020-09-15 00:31:54,390 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-15 00:31:54,390 INFO L276 IsEmpty]: Start isEmpty. Operand 44685 states and 238000 transitions. [2020-09-15 00:31:54,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-15 00:31:54,396 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:31:54,396 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:31:54,396 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2020-09-15 00:31:54,396 INFO L427 AbstractCegarLoop]: === Iteration 73 === [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]=== [2020-09-15 00:31:54,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:31:54,396 INFO L82 PathProgramCache]: Analyzing trace with hash -377078589, now seen corresponding path program 23 times [2020-09-15 00:31:54,397 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:31:54,397 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705327019] [2020-09-15 00:31:54,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:31:54,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:31:54,503 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-15 00:31:54,503 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705327019] [2020-09-15 00:31:54,503 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:31:54,504 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-15 00:31:54,504 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113600556] [2020-09-15 00:31:54,504 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-15 00:31:54,504 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:31:54,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-15 00:31:54,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-09-15 00:31:54,504 INFO L87 Difference]: Start difference. First operand 44685 states and 238000 transitions. Second operand 11 states. [2020-09-15 00:31:57,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:31:57,644 INFO L93 Difference]: Finished difference Result 204573 states and 905311 transitions. [2020-09-15 00:31:57,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-15 00:31:57,645 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 27 [2020-09-15 00:31:57,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:31:59,385 INFO L225 Difference]: With dead ends: 204573 [2020-09-15 00:31:59,386 INFO L226 Difference]: Without dead ends: 204549 [2020-09-15 00:31:59,386 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1554 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=941, Invalid=3751, Unknown=0, NotChecked=0, Total=4692 [2020-09-15 00:32:01,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204549 states. [2020-09-15 00:32:07,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204549 to 44434. [2020-09-15 00:32:07,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44434 states. [2020-09-15 00:32:07,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44434 states to 44434 states and 236823 transitions. [2020-09-15 00:32:07,548 INFO L78 Accepts]: Start accepts. Automaton has 44434 states and 236823 transitions. Word has length 27 [2020-09-15 00:32:07,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:32:07,548 INFO L479 AbstractCegarLoop]: Abstraction has 44434 states and 236823 transitions. [2020-09-15 00:32:07,548 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-15 00:32:07,548 INFO L276 IsEmpty]: Start isEmpty. Operand 44434 states and 236823 transitions. [2020-09-15 00:32:07,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-15 00:32:07,553 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:32:07,554 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:32:07,554 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2020-09-15 00:32:07,554 INFO L427 AbstractCegarLoop]: === Iteration 74 === [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]=== [2020-09-15 00:32:07,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:32:07,554 INFO L82 PathProgramCache]: Analyzing trace with hash -375739389, now seen corresponding path program 24 times [2020-09-15 00:32:07,554 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:32:07,554 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885556418] [2020-09-15 00:32:07,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:32:07,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:32:07,675 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-15 00:32:07,676 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885556418] [2020-09-15 00:32:07,676 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 00:32:07,676 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-15 00:32:07,676 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068477054] [2020-09-15 00:32:07,676 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-15 00:32:07,677 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:32:07,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-15 00:32:07,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-09-15 00:32:07,677 INFO L87 Difference]: Start difference. First operand 44434 states and 236823 transitions. Second operand 11 states. [2020-09-15 00:32:11,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:32:11,617 INFO L93 Difference]: Finished difference Result 204089 states and 903225 transitions. [2020-09-15 00:32:11,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-09-15 00:32:11,617 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 27 [2020-09-15 00:32:11,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:32:12,236 INFO L225 Difference]: With dead ends: 204089 [2020-09-15 00:32:12,236 INFO L226 Difference]: Without dead ends: 204054 [2020-09-15 00:32:12,237 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1564 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=941, Invalid=3751, Unknown=0, NotChecked=0, Total=4692 [2020-09-15 00:32:15,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204054 states. [2020-09-15 00:32:17,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204054 to 43794. [2020-09-15 00:32:17,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43794 states. [2020-09-15 00:32:18,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43794 states to 43794 states and 233791 transitions. [2020-09-15 00:32:18,099 INFO L78 Accepts]: Start accepts. Automaton has 43794 states and 233791 transitions. Word has length 27 [2020-09-15 00:32:18,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:32:18,099 INFO L479 AbstractCegarLoop]: Abstraction has 43794 states and 233791 transitions. [2020-09-15 00:32:18,099 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-15 00:32:18,099 INFO L276 IsEmpty]: Start isEmpty. Operand 43794 states and 233791 transitions. [2020-09-15 00:32:18,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-09-15 00:32:18,108 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:32:18,108 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:32:18,108 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2020-09-15 00:32:18,108 INFO L427 AbstractCegarLoop]: === Iteration 75 === [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]=== [2020-09-15 00:32:18,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:32:18,108 INFO L82 PathProgramCache]: Analyzing trace with hash -1079064756, now seen corresponding path program 1 times [2020-09-15 00:32:18,109 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:32:18,109 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356411796] [2020-09-15 00:32:18,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:32:18,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:32:18,199 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-09-15 00:32:18,200 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356411796] [2020-09-15 00:32:18,200 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1361877608] [2020-09-15 00:32:18,200 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 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:32:18,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:32:18,322 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 8 conjunts are in the unsatisfiable core [2020-09-15 00:32:18,323 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:32:18,349 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-09-15 00:32:18,350 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:32:18,350 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-09-15 00:32:18,350 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830754780] [2020-09-15 00:32:18,350 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-15 00:32:18,350 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:32:18,351 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-15 00:32:18,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-09-15 00:32:18,351 INFO L87 Difference]: Start difference. First operand 43794 states and 233791 transitions. Second operand 11 states. [2020-09-15 00:32:19,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:32:19,977 INFO L93 Difference]: Finished difference Result 139868 states and 649854 transitions. [2020-09-15 00:32:19,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:32:19,978 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 29 [2020-09-15 00:32:19,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:32:20,431 INFO L225 Difference]: With dead ends: 139868 [2020-09-15 00:32:20,431 INFO L226 Difference]: Without dead ends: 139824 [2020-09-15 00:32:20,432 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 251 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-09-15 00:32:22,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139824 states. [2020-09-15 00:32:24,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139824 to 44208. [2020-09-15 00:32:24,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44208 states. [2020-09-15 00:32:24,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44208 states to 44208 states and 235737 transitions. [2020-09-15 00:32:24,424 INFO L78 Accepts]: Start accepts. Automaton has 44208 states and 235737 transitions. Word has length 29 [2020-09-15 00:32:24,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:32:24,424 INFO L479 AbstractCegarLoop]: Abstraction has 44208 states and 235737 transitions. [2020-09-15 00:32:24,424 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-15 00:32:24,424 INFO L276 IsEmpty]: Start isEmpty. Operand 44208 states and 235737 transitions. [2020-09-15 00:32:24,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-09-15 00:32:24,433 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:32:24,433 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:32:24,633 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 61 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable149 [2020-09-15 00:32:24,634 INFO L427 AbstractCegarLoop]: === Iteration 76 === [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]=== [2020-09-15 00:32:24,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:32:24,634 INFO L82 PathProgramCache]: Analyzing trace with hash -1079080225, now seen corresponding path program 1 times [2020-09-15 00:32:24,635 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:32:24,635 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772325667] [2020-09-15 00:32:24,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:32:24,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:32:24,726 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-09-15 00:32:24,727 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772325667] [2020-09-15 00:32:24,727 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2126416861] [2020-09-15 00:32:24,727 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 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:32:24,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:32:24,852 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 8 conjunts are in the unsatisfiable core [2020-09-15 00:32:24,853 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:32:24,878 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-09-15 00:32:24,878 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:32:24,878 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-09-15 00:32:24,879 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656270937] [2020-09-15 00:32:24,879 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-15 00:32:24,879 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:32:24,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-15 00:32:24,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-09-15 00:32:24,879 INFO L87 Difference]: Start difference. First operand 44208 states and 235737 transitions. Second operand 11 states. [2020-09-15 00:32:27,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:32:27,084 INFO L93 Difference]: Finished difference Result 138663 states and 644549 transitions. [2020-09-15 00:32:27,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:32:27,085 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 29 [2020-09-15 00:32:27,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:32:27,553 INFO L225 Difference]: With dead ends: 138663 [2020-09-15 00:32:27,553 INFO L226 Difference]: Without dead ends: 138619 [2020-09-15 00:32:27,554 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 245 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-09-15 00:32:28,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138619 states. [2020-09-15 00:32:31,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138619 to 44346. [2020-09-15 00:32:31,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44346 states. [2020-09-15 00:32:31,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44346 states to 44346 states and 236212 transitions. [2020-09-15 00:32:31,492 INFO L78 Accepts]: Start accepts. Automaton has 44346 states and 236212 transitions. Word has length 29 [2020-09-15 00:32:31,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:32:31,492 INFO L479 AbstractCegarLoop]: Abstraction has 44346 states and 236212 transitions. [2020-09-15 00:32:31,492 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-15 00:32:31,492 INFO L276 IsEmpty]: Start isEmpty. Operand 44346 states and 236212 transitions. [2020-09-15 00:32:31,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-09-15 00:32:31,501 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:32:31,501 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:32:31,702 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150,62 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:32:31,702 INFO L427 AbstractCegarLoop]: === Iteration 77 === [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]=== [2020-09-15 00:32:31,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:32:31,703 INFO L82 PathProgramCache]: Analyzing trace with hash -1079042684, now seen corresponding path program 1 times [2020-09-15 00:32:31,703 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:32:31,703 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349571473] [2020-09-15 00:32:31,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:32:31,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:32:31,794 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-09-15 00:32:31,794 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349571473] [2020-09-15 00:32:31,795 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1533786927] [2020-09-15 00:32:31,795 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 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:32:31,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:32:31,919 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 8 conjunts are in the unsatisfiable core [2020-09-15 00:32:31,920 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:32:31,950 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-09-15 00:32:31,950 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:32:31,950 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-09-15 00:32:31,951 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932682090] [2020-09-15 00:32:31,951 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-15 00:32:31,951 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:32:31,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-15 00:32:31,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-09-15 00:32:31,951 INFO L87 Difference]: Start difference. First operand 44346 states and 236212 transitions. Second operand 11 states. [2020-09-15 00:32:36,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:32:36,382 INFO L93 Difference]: Finished difference Result 137475 states and 638613 transitions. [2020-09-15 00:32:36,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:32:36,383 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 29 [2020-09-15 00:32:36,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:32:36,811 INFO L225 Difference]: With dead ends: 137475 [2020-09-15 00:32:36,811 INFO L226 Difference]: Without dead ends: 137431 [2020-09-15 00:32:36,812 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 247 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-09-15 00:32:38,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137431 states. [2020-09-15 00:32:40,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137431 to 44001. [2020-09-15 00:32:40,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44001 states. [2020-09-15 00:32:40,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44001 states to 44001 states and 234197 transitions. [2020-09-15 00:32:40,299 INFO L78 Accepts]: Start accepts. Automaton has 44001 states and 234197 transitions. Word has length 29 [2020-09-15 00:32:40,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:32:40,300 INFO L479 AbstractCegarLoop]: Abstraction has 44001 states and 234197 transitions. [2020-09-15 00:32:40,300 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-15 00:32:40,300 INFO L276 IsEmpty]: Start isEmpty. Operand 44001 states and 234197 transitions. [2020-09-15 00:32:40,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-09-15 00:32:40,309 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:32:40,309 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:32:40,509 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151,63 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:32:40,510 INFO L427 AbstractCegarLoop]: === Iteration 78 === [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]=== [2020-09-15 00:32:40,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:32:40,510 INFO L82 PathProgramCache]: Analyzing trace with hash -1076743476, now seen corresponding path program 2 times [2020-09-15 00:32:40,510 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:32:40,511 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109601821] [2020-09-15 00:32:40,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:32:40,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:32:40,601 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-09-15 00:32:40,602 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109601821] [2020-09-15 00:32:40,602 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1409787962] [2020-09-15 00:32:40,602 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 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:32:40,727 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-09-15 00:32:40,728 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-15 00:32:40,729 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 8 conjunts are in the unsatisfiable core [2020-09-15 00:32:40,729 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:32:40,755 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-09-15 00:32:40,755 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:32:40,756 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-09-15 00:32:40,756 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811950167] [2020-09-15 00:32:40,756 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-15 00:32:40,756 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:32:40,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-15 00:32:40,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-09-15 00:32:40,757 INFO L87 Difference]: Start difference. First operand 44001 states and 234197 transitions. Second operand 11 states. [2020-09-15 00:32:42,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:32:42,479 INFO L93 Difference]: Finished difference Result 137660 states and 639047 transitions. [2020-09-15 00:32:42,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:32:42,480 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 29 [2020-09-15 00:32:42,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:32:42,904 INFO L225 Difference]: With dead ends: 137660 [2020-09-15 00:32:42,904 INFO L226 Difference]: Without dead ends: 137614 [2020-09-15 00:32:42,904 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 251 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-09-15 00:32:45,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137614 states. [2020-09-15 00:32:46,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137614 to 43606. [2020-09-15 00:32:46,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43606 states. [2020-09-15 00:32:46,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43606 states to 43606 states and 231805 transitions. [2020-09-15 00:32:46,966 INFO L78 Accepts]: Start accepts. Automaton has 43606 states and 231805 transitions. Word has length 29 [2020-09-15 00:32:46,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:32:46,966 INFO L479 AbstractCegarLoop]: Abstraction has 43606 states and 231805 transitions. [2020-09-15 00:32:46,966 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-15 00:32:46,966 INFO L276 IsEmpty]: Start isEmpty. Operand 43606 states and 231805 transitions. [2020-09-15 00:32:46,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-09-15 00:32:46,975 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:32:46,975 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:32:47,175 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152,64 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:32:47,176 INFO L427 AbstractCegarLoop]: === Iteration 79 === [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]=== [2020-09-15 00:32:47,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:32:47,177 INFO L82 PathProgramCache]: Analyzing trace with hash -1091609185, now seen corresponding path program 2 times [2020-09-15 00:32:47,177 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:32:47,177 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600526848] [2020-09-15 00:32:47,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:32:47,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:32:47,264 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-09-15 00:32:47,265 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600526848] [2020-09-15 00:32:47,265 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1622397352] [2020-09-15 00:32:47,265 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 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:32:47,389 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-09-15 00:32:47,389 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-15 00:32:47,391 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 8 conjunts are in the unsatisfiable core [2020-09-15 00:32:47,392 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:32:47,424 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-09-15 00:32:47,426 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:32:47,426 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-09-15 00:32:47,426 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248410119] [2020-09-15 00:32:47,426 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-15 00:32:47,427 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:32:47,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-15 00:32:47,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-09-15 00:32:47,427 INFO L87 Difference]: Start difference. First operand 43606 states and 231805 transitions. Second operand 11 states. [2020-09-15 00:32:48,257 WARN L193 SmtUtils]: Spent 347.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2020-09-15 00:32:49,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:32:49,328 INFO L93 Difference]: Finished difference Result 136227 states and 631974 transitions. [2020-09-15 00:32:49,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:32:49,329 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 29 [2020-09-15 00:32:49,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:32:49,734 INFO L225 Difference]: With dead ends: 136227 [2020-09-15 00:32:49,735 INFO L226 Difference]: Without dead ends: 136181 [2020-09-15 00:32:49,735 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 248 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-09-15 00:32:51,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136181 states. [2020-09-15 00:32:53,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136181 to 43334. [2020-09-15 00:32:53,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43334 states. [2020-09-15 00:32:53,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43334 states to 43334 states and 230138 transitions. [2020-09-15 00:32:53,558 INFO L78 Accepts]: Start accepts. Automaton has 43334 states and 230138 transitions. Word has length 29 [2020-09-15 00:32:53,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:32:53,558 INFO L479 AbstractCegarLoop]: Abstraction has 43334 states and 230138 transitions. [2020-09-15 00:32:53,558 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-15 00:32:53,558 INFO L276 IsEmpty]: Start isEmpty. Operand 43334 states and 230138 transitions. [2020-09-15 00:32:53,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-09-15 00:32:53,566 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:32:53,566 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:32:53,772 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153,65 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:32:53,772 INFO L427 AbstractCegarLoop]: === Iteration 80 === [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]=== [2020-09-15 00:32:53,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:32:53,773 INFO L82 PathProgramCache]: Analyzing trace with hash -1055532284, now seen corresponding path program 2 times [2020-09-15 00:32:53,774 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:32:53,774 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446182596] [2020-09-15 00:32:53,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:32:53,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:32:53,872 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-09-15 00:32:53,872 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446182596] [2020-09-15 00:32:53,872 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2141852345] [2020-09-15 00:32:53,873 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 66 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 66 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:32:53,995 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-09-15 00:32:53,995 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-15 00:32:53,997 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 8 conjunts are in the unsatisfiable core [2020-09-15 00:32:53,997 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:32:54,024 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-09-15 00:32:54,024 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:32:54,024 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-09-15 00:32:54,025 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178745785] [2020-09-15 00:32:54,025 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-15 00:32:54,025 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:32:54,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-15 00:32:54,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-09-15 00:32:54,026 INFO L87 Difference]: Start difference. First operand 43334 states and 230138 transitions. Second operand 11 states. [2020-09-15 00:32:55,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:32:55,621 INFO L93 Difference]: Finished difference Result 135193 states and 626279 transitions. [2020-09-15 00:32:55,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:32:55,622 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 29 [2020-09-15 00:32:55,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:32:57,227 INFO L225 Difference]: With dead ends: 135193 [2020-09-15 00:32:57,228 INFO L226 Difference]: Without dead ends: 135147 [2020-09-15 00:32:57,228 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 246 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-09-15 00:32:58,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135147 states. [2020-09-15 00:33:00,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135147 to 43128. [2020-09-15 00:33:00,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43128 states. [2020-09-15 00:33:00,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43128 states to 43128 states and 228903 transitions. [2020-09-15 00:33:00,982 INFO L78 Accepts]: Start accepts. Automaton has 43128 states and 228903 transitions. Word has length 29 [2020-09-15 00:33:00,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:33:00,982 INFO L479 AbstractCegarLoop]: Abstraction has 43128 states and 228903 transitions. [2020-09-15 00:33:00,982 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-15 00:33:00,982 INFO L276 IsEmpty]: Start isEmpty. Operand 43128 states and 228903 transitions. [2020-09-15 00:33:00,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-09-15 00:33:00,990 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:33:00,990 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:33:01,191 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable154 [2020-09-15 00:33:01,191 INFO L427 AbstractCegarLoop]: === Iteration 81 === [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]=== [2020-09-15 00:33:01,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:33:01,192 INFO L82 PathProgramCache]: Analyzing trace with hash -233799798, now seen corresponding path program 3 times [2020-09-15 00:33:01,192 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:33:01,192 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294618474] [2020-09-15 00:33:01,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:33:01,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:33:01,287 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-15 00:33:01,288 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294618474] [2020-09-15 00:33:01,288 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [78102195] [2020-09-15 00:33:01,288 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 67 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 67 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:33:01,412 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-09-15 00:33:01,412 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-15 00:33:01,413 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 8 conjunts are in the unsatisfiable core [2020-09-15 00:33:01,413 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:33:01,440 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-15 00:33:01,441 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:33:01,441 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-09-15 00:33:01,441 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622688310] [2020-09-15 00:33:01,441 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-15 00:33:01,441 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:33:01,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-15 00:33:01,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-09-15 00:33:01,442 INFO L87 Difference]: Start difference. First operand 43128 states and 228903 transitions. Second operand 11 states. [2020-09-15 00:33:03,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:33:03,062 INFO L93 Difference]: Finished difference Result 135315 states and 626661 transitions. [2020-09-15 00:33:03,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:33:03,063 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 29 [2020-09-15 00:33:03,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:33:03,466 INFO L225 Difference]: With dead ends: 135315 [2020-09-15 00:33:03,466 INFO L226 Difference]: Without dead ends: 135271 [2020-09-15 00:33:03,466 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 251 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-09-15 00:33:08,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135271 states. [2020-09-15 00:33:09,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135271 to 42904. [2020-09-15 00:33:09,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42904 states. [2020-09-15 00:33:09,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42904 states to 42904 states and 227530 transitions. [2020-09-15 00:33:09,872 INFO L78 Accepts]: Start accepts. Automaton has 42904 states and 227530 transitions. Word has length 29 [2020-09-15 00:33:09,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:33:09,872 INFO L479 AbstractCegarLoop]: Abstraction has 42904 states and 227530 transitions. [2020-09-15 00:33:09,872 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-15 00:33:09,872 INFO L276 IsEmpty]: Start isEmpty. Operand 42904 states and 227530 transitions. [2020-09-15 00:33:09,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-09-15 00:33:09,881 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:33:09,881 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:33:10,081 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 67 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable155 [2020-09-15 00:33:10,082 INFO L427 AbstractCegarLoop]: === Iteration 82 === [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]=== [2020-09-15 00:33:10,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:33:10,082 INFO L82 PathProgramCache]: Analyzing trace with hash -938803546, now seen corresponding path program 1 times [2020-09-15 00:33:10,082 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:33:10,083 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311064446] [2020-09-15 00:33:10,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:33:10,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:33:10,165 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-15 00:33:10,165 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311064446] [2020-09-15 00:33:10,166 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [148644934] [2020-09-15 00:33:10,166 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 68 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 68 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:33:10,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:33:10,283 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 8 conjunts are in the unsatisfiable core [2020-09-15 00:33:10,283 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:33:10,308 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-15 00:33:10,308 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:33:10,308 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-09-15 00:33:10,309 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322555061] [2020-09-15 00:33:10,309 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-15 00:33:10,309 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:33:10,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-15 00:33:10,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-09-15 00:33:10,309 INFO L87 Difference]: Start difference. First operand 42904 states and 227530 transitions. Second operand 11 states. [2020-09-15 00:33:12,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:33:12,545 INFO L93 Difference]: Finished difference Result 140989 states and 654549 transitions. [2020-09-15 00:33:12,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:33:12,546 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 29 [2020-09-15 00:33:12,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:33:13,016 INFO L225 Difference]: With dead ends: 140989 [2020-09-15 00:33:13,016 INFO L226 Difference]: Without dead ends: 140945 [2020-09-15 00:33:13,016 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 246 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-09-15 00:33:14,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140945 states. [2020-09-15 00:33:16,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140945 to 42930. [2020-09-15 00:33:16,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42930 states. [2020-09-15 00:33:17,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42930 states to 42930 states and 227280 transitions. [2020-09-15 00:33:17,082 INFO L78 Accepts]: Start accepts. Automaton has 42930 states and 227280 transitions. Word has length 29 [2020-09-15 00:33:17,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:33:17,082 INFO L479 AbstractCegarLoop]: Abstraction has 42930 states and 227280 transitions. [2020-09-15 00:33:17,082 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-15 00:33:17,082 INFO L276 IsEmpty]: Start isEmpty. Operand 42930 states and 227280 transitions. [2020-09-15 00:33:17,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-09-15 00:33:17,090 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:33:17,090 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:33:17,291 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156,68 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:33:17,291 INFO L427 AbstractCegarLoop]: === Iteration 83 === [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]=== [2020-09-15 00:33:17,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:33:17,292 INFO L82 PathProgramCache]: Analyzing trace with hash 1231154336, now seen corresponding path program 4 times [2020-09-15 00:33:17,292 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:33:17,292 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469755398] [2020-09-15 00:33:17,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:33:17,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:33:17,385 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-15 00:33:17,386 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469755398] [2020-09-15 00:33:17,386 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1755998345] [2020-09-15 00:33:17,386 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 69 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 69 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:33:17,506 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-09-15 00:33:17,506 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-15 00:33:17,507 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 8 conjunts are in the unsatisfiable core [2020-09-15 00:33:17,508 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:33:17,535 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-15 00:33:17,535 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:33:17,535 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-09-15 00:33:17,535 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403217645] [2020-09-15 00:33:17,536 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-15 00:33:17,536 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:33:17,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-15 00:33:17,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-09-15 00:33:17,536 INFO L87 Difference]: Start difference. First operand 42930 states and 227280 transitions. Second operand 11 states. [2020-09-15 00:33:19,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:33:19,113 INFO L93 Difference]: Finished difference Result 136674 states and 632799 transitions. [2020-09-15 00:33:19,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:33:19,114 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 29 [2020-09-15 00:33:19,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:33:20,656 INFO L225 Difference]: With dead ends: 136674 [2020-09-15 00:33:20,656 INFO L226 Difference]: Without dead ends: 136628 [2020-09-15 00:33:20,656 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 253 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-09-15 00:33:22,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136628 states. [2020-09-15 00:33:23,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136628 to 43133. [2020-09-15 00:33:23,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43133 states. [2020-09-15 00:33:24,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43133 states to 43133 states and 228222 transitions. [2020-09-15 00:33:24,500 INFO L78 Accepts]: Start accepts. Automaton has 43133 states and 228222 transitions. Word has length 29 [2020-09-15 00:33:24,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:33:24,500 INFO L479 AbstractCegarLoop]: Abstraction has 43133 states and 228222 transitions. [2020-09-15 00:33:24,500 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-15 00:33:24,500 INFO L276 IsEmpty]: Start isEmpty. Operand 43133 states and 228222 transitions. [2020-09-15 00:33:24,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-09-15 00:33:24,509 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:33:24,509 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:33:24,709 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable157 [2020-09-15 00:33:24,710 INFO L427 AbstractCegarLoop]: === Iteration 84 === [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]=== [2020-09-15 00:33:24,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:33:24,711 INFO L82 PathProgramCache]: Analyzing trace with hash 1231140262, now seen corresponding path program 2 times [2020-09-15 00:33:24,711 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:33:24,711 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802886895] [2020-09-15 00:33:24,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:33:24,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:33:24,797 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-15 00:33:24,797 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802886895] [2020-09-15 00:33:24,798 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1151965247] [2020-09-15 00:33:24,798 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 70 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 70 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:33:24,922 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-09-15 00:33:24,922 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-15 00:33:24,923 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 8 conjunts are in the unsatisfiable core [2020-09-15 00:33:24,924 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:33:24,948 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-15 00:33:24,948 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:33:24,948 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-09-15 00:33:24,948 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465951318] [2020-09-15 00:33:24,948 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-15 00:33:24,949 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:33:24,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-15 00:33:24,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-09-15 00:33:24,949 INFO L87 Difference]: Start difference. First operand 43133 states and 228222 transitions. Second operand 11 states. [2020-09-15 00:33:26,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:33:26,562 INFO L93 Difference]: Finished difference Result 137702 states and 638553 transitions. [2020-09-15 00:33:26,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:33:26,563 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 29 [2020-09-15 00:33:26,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:33:27,011 INFO L225 Difference]: With dead ends: 137702 [2020-09-15 00:33:27,012 INFO L226 Difference]: Without dead ends: 137652 [2020-09-15 00:33:27,012 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-09-15 00:33:28,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137652 states. [2020-09-15 00:33:30,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137652 to 42970. [2020-09-15 00:33:30,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42970 states. [2020-09-15 00:33:31,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42970 states to 42970 states and 227334 transitions. [2020-09-15 00:33:31,148 INFO L78 Accepts]: Start accepts. Automaton has 42970 states and 227334 transitions. Word has length 29 [2020-09-15 00:33:31,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:33:31,149 INFO L479 AbstractCegarLoop]: Abstraction has 42970 states and 227334 transitions. [2020-09-15 00:33:31,149 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-15 00:33:31,149 INFO L276 IsEmpty]: Start isEmpty. Operand 42970 states and 227334 transitions. [2020-09-15 00:33:31,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-09-15 00:33:31,157 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:33:31,157 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:33:31,358 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 70 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable158 [2020-09-15 00:33:31,358 INFO L427 AbstractCegarLoop]: === Iteration 85 === [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]=== [2020-09-15 00:33:31,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:33:31,359 INFO L82 PathProgramCache]: Analyzing trace with hash 1231177803, now seen corresponding path program 1 times [2020-09-15 00:33:31,359 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:33:31,359 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359233538] [2020-09-15 00:33:31,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:33:31,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:33:31,449 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-15 00:33:31,450 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359233538] [2020-09-15 00:33:31,450 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1549497309] [2020-09-15 00:33:31,450 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 71 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 71 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:33:31,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:33:31,568 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 8 conjunts are in the unsatisfiable core [2020-09-15 00:33:31,569 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:33:31,595 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-15 00:33:31,595 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:33:31,595 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-09-15 00:33:31,596 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634166007] [2020-09-15 00:33:31,596 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-15 00:33:31,596 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:33:31,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-15 00:33:31,596 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-09-15 00:33:31,596 INFO L87 Difference]: Start difference. First operand 42970 states and 227334 transitions. Second operand 11 states. [2020-09-15 00:33:33,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:33:33,857 INFO L93 Difference]: Finished difference Result 136895 states and 634251 transitions. [2020-09-15 00:33:33,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:33:33,857 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 29 [2020-09-15 00:33:33,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:33:34,332 INFO L225 Difference]: With dead ends: 136895 [2020-09-15 00:33:34,332 INFO L226 Difference]: Without dead ends: 136851 [2020-09-15 00:33:34,333 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 243 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-09-15 00:33:35,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136851 states. [2020-09-15 00:33:40,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136851 to 42730. [2020-09-15 00:33:40,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42730 states. [2020-09-15 00:33:40,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42730 states to 42730 states and 225896 transitions. [2020-09-15 00:33:40,850 INFO L78 Accepts]: Start accepts. Automaton has 42730 states and 225896 transitions. Word has length 29 [2020-09-15 00:33:40,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:33:40,850 INFO L479 AbstractCegarLoop]: Abstraction has 42730 states and 225896 transitions. [2020-09-15 00:33:40,850 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-15 00:33:40,850 INFO L276 IsEmpty]: Start isEmpty. Operand 42730 states and 225896 transitions. [2020-09-15 00:33:40,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-09-15 00:33:40,859 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:33:40,859 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:33:41,068 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 71 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable159 [2020-09-15 00:33:41,069 INFO L427 AbstractCegarLoop]: === Iteration 86 === [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]=== [2020-09-15 00:33:41,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:33:41,069 INFO L82 PathProgramCache]: Analyzing trace with hash 1254688203, now seen corresponding path program 2 times [2020-09-15 00:33:41,069 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:33:41,070 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048811346] [2020-09-15 00:33:41,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:33:41,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:33:41,158 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-15 00:33:41,158 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048811346] [2020-09-15 00:33:41,159 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2132479038] [2020-09-15 00:33:41,159 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 72 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 72 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:33:41,286 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-09-15 00:33:41,286 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-15 00:33:41,287 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 8 conjunts are in the unsatisfiable core [2020-09-15 00:33:41,288 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:33:41,314 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-15 00:33:41,314 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:33:41,314 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-09-15 00:33:41,314 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163851320] [2020-09-15 00:33:41,315 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-15 00:33:41,315 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:33:41,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-15 00:33:41,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-09-15 00:33:41,315 INFO L87 Difference]: Start difference. First operand 42730 states and 225896 transitions. Second operand 11 states. [2020-09-15 00:33:42,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 00:33:42,931 INFO L93 Difference]: Finished difference Result 136603 states and 632426 transitions. [2020-09-15 00:33:42,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-15 00:33:42,932 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 29 [2020-09-15 00:33:42,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 00:33:43,364 INFO L225 Difference]: With dead ends: 136603 [2020-09-15 00:33:43,365 INFO L226 Difference]: Without dead ends: 136553 [2020-09-15 00:33:43,365 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 243 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2020-09-15 00:33:45,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136553 states. [2020-09-15 00:33:46,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136553 to 42336. [2020-09-15 00:33:46,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42336 states. [2020-09-15 00:33:47,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42336 states to 42336 states and 223735 transitions. [2020-09-15 00:33:47,125 INFO L78 Accepts]: Start accepts. Automaton has 42336 states and 223735 transitions. Word has length 29 [2020-09-15 00:33:47,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 00:33:47,125 INFO L479 AbstractCegarLoop]: Abstraction has 42336 states and 223735 transitions. [2020-09-15 00:33:47,125 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-15 00:33:47,125 INFO L276 IsEmpty]: Start isEmpty. Operand 42336 states and 223735 transitions. [2020-09-15 00:33:47,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-09-15 00:33:47,133 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 00:33:47,133 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 00:33:47,334 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160,72 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:33:47,334 INFO L427 AbstractCegarLoop]: === Iteration 87 === [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]=== [2020-09-15 00:33:47,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 00:33:47,335 INFO L82 PathProgramCache]: Analyzing trace with hash -1636984727, now seen corresponding path program 3 times [2020-09-15 00:33:47,335 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 00:33:47,335 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331100047] [2020-09-15 00:33:47,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 00:33:47,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 00:33:47,428 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-15 00:33:47,428 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331100047] [2020-09-15 00:33:47,428 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [555304755] [2020-09-15 00:33:47,429 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 73 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 73 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-15 00:33:47,550 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-09-15 00:33:47,551 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-15 00:33:47,552 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 8 conjunts are in the unsatisfiable core [2020-09-15 00:33:47,553 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-15 00:33:47,583 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-15 00:33:47,583 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-15 00:33:47,583 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-09-15 00:33:47,583 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626568551] [2020-09-15 00:33:47,584 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-15 00:33:47,584 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 00:33:47,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-15 00:33:47,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-09-15 00:33:47,584 INFO L87 Difference]: Start difference. First operand 42336 states and 223735 transitions. Second operand 11 states.