/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-SemanticLbe.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe020_pso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-7bb8cbd [2020-10-15 22:13:23,552 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-15 22:13:23,554 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-15 22:13:23,583 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-15 22:13:23,583 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-15 22:13:23,584 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-15 22:13:23,586 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-15 22:13:23,587 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-15 22:13:23,589 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-15 22:13:23,589 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-15 22:13:23,590 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-15 22:13:23,591 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-15 22:13:23,592 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-15 22:13:23,593 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-15 22:13:23,593 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-15 22:13:23,594 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-15 22:13:23,595 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-15 22:13:23,596 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-15 22:13:23,598 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-15 22:13:23,599 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-15 22:13:23,601 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-15 22:13:23,602 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-15 22:13:23,603 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-15 22:13:23,604 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-15 22:13:23,606 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-15 22:13:23,609 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-15 22:13:23,609 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-15 22:13:23,610 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-15 22:13:23,611 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-15 22:13:23,612 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-15 22:13:23,612 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-15 22:13:23,612 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-15 22:13:23,613 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-15 22:13:23,613 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-15 22:13:23,614 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-15 22:13:23,614 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-15 22:13:23,615 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-SemanticLbe.epf [2020-10-15 22:13:23,638 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-15 22:13:23,638 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-15 22:13:23,639 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-15 22:13:23,639 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-15 22:13:23,640 INFO L138 SettingsManager]: * Use SBE=true [2020-10-15 22:13:23,640 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-15 22:13:23,640 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-15 22:13:23,640 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-15 22:13:23,640 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-15 22:13:23,641 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-15 22:13:23,641 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-15 22:13:23,641 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-15 22:13:23,641 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-15 22:13:23,641 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-15 22:13:23,641 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-15 22:13:23,642 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-15 22:13:23,642 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-15 22:13:23,642 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-15 22:13:23,642 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-15 22:13:23,642 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-15 22:13:23,643 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-15 22:13:23,643 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 22:13:23,643 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-15 22:13:23,643 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-15 22:13:23,643 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-15 22:13:23,644 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-15 22:13:23,644 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-15 22:13:23,644 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-15 22:13:23,644 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-15 22:13:23,934 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-15 22:13:23,954 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-15 22:13:23,958 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-15 22:13:23,960 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-15 22:13:23,960 INFO L275 PluginConnector]: CDTParser initialized [2020-10-15 22:13:23,961 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe020_pso.opt.i [2020-10-15 22:13:24,033 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/edb480a4f/220a5e78bd8049c389a96a707a8a014b/FLAG3bde941a5 [2020-10-15 22:13:24,585 INFO L306 CDTParser]: Found 1 translation units. [2020-10-15 22:13:24,586 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe020_pso.opt.i [2020-10-15 22:13:24,608 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/edb480a4f/220a5e78bd8049c389a96a707a8a014b/FLAG3bde941a5 [2020-10-15 22:13:24,885 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/edb480a4f/220a5e78bd8049c389a96a707a8a014b [2020-10-15 22:13:24,896 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-15 22:13:24,898 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-15 22:13:24,900 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-15 22:13:24,900 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-15 22:13:24,904 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-15 22:13:24,905 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 10:13:24" (1/1) ... [2020-10-15 22:13:24,908 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18a65b55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:13:24, skipping insertion in model container [2020-10-15 22:13:24,908 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 10:13:24" (1/1) ... [2020-10-15 22:13:24,916 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-15 22:13:24,954 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-15 22:13:25,338 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 22:13:25,355 INFO L203 MainTranslator]: Completed pre-run [2020-10-15 22:13:25,525 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 22:13:25,601 INFO L208 MainTranslator]: Completed translation [2020-10-15 22:13:25,601 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:13:25 WrapperNode [2020-10-15 22:13:25,602 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-15 22:13:25,602 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-15 22:13:25,603 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-15 22:13:25,603 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-15 22:13:25,612 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:13:25" (1/1) ... [2020-10-15 22:13:25,628 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:13:25" (1/1) ... [2020-10-15 22:13:25,648 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-15 22:13:25,649 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-15 22:13:25,649 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-15 22:13:25,649 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-15 22:13:25,658 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:13:25" (1/1) ... [2020-10-15 22:13:25,659 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:13:25" (1/1) ... [2020-10-15 22:13:25,661 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:13:25" (1/1) ... [2020-10-15 22:13:25,662 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:13:25" (1/1) ... [2020-10-15 22:13:25,668 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:13:25" (1/1) ... [2020-10-15 22:13:25,670 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:13:25" (1/1) ... [2020-10-15 22:13:25,672 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:13:25" (1/1) ... [2020-10-15 22:13:25,675 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-15 22:13:25,676 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-15 22:13:25,676 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-15 22:13:25,676 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-15 22:13:25,677 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:13:25" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 22:13:25,733 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-15 22:13:25,733 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-15 22:13:25,733 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-15 22:13:25,733 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-15 22:13:25,733 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-15 22:13:25,733 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-15 22:13:25,734 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-15 22:13:25,734 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-15 22:13:25,735 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-15 22:13:25,735 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-15 22:13:25,735 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-15 22:13:25,736 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-15 22:13:25,736 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-15 22:13:25,738 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-15 22:13:26,053 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-15 22:13:26,053 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-15 22:13:26,055 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 10:13:26 BoogieIcfgContainer [2020-10-15 22:13:26,056 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-15 22:13:26,057 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-15 22:13:26,057 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-15 22:13:26,060 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-15 22:13:26,061 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 10:13:24" (1/3) ... [2020-10-15 22:13:26,062 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33172da9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 10:13:26, skipping insertion in model container [2020-10-15 22:13:26,062 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:13:25" (2/3) ... [2020-10-15 22:13:26,063 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33172da9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 10:13:26, skipping insertion in model container [2020-10-15 22:13:26,063 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 10:13:26" (3/3) ... [2020-10-15 22:13:26,065 INFO L111 eAbstractionObserver]: Analyzing ICFG safe020_pso.opt.i [2020-10-15 22:13:26,078 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-15 22:13:26,079 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-15 22:13:26,086 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-15 22:13:26,087 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-15 22:13:26,125 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:13:26,126 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:13:26,126 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:13:26,127 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:13:26,127 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:13:26,127 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:13:26,128 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:13:26,128 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:13:26,128 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:13:26,129 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:13:26,129 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:13:26,130 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:13:26,130 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:13:26,130 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:13:26,131 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:13:26,131 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:13:26,131 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:13:26,132 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:13:26,135 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:13:26,136 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:13:26,136 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:13:26,136 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:13:26,141 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:13:26,142 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:13:26,143 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:13:26,143 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:13:26,145 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:13:26,146 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:13:26,146 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:13:26,146 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:13:26,169 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-15 22:13:26,203 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-15 22:13:26,204 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-15 22:13:26,204 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-15 22:13:26,204 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 22:13:26,204 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 22:13:26,204 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-15 22:13:26,204 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 22:13:26,204 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 22:13:26,218 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-15 22:13:26,221 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 76 places, 68 transitions, 151 flow [2020-10-15 22:13:26,224 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 76 places, 68 transitions, 151 flow [2020-10-15 22:13:26,227 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 76 places, 68 transitions, 151 flow [2020-10-15 22:13:26,272 INFO L129 PetriNetUnfolder]: 2/65 cut-off events. [2020-10-15 22:13:26,273 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-15 22:13:26,278 INFO L80 FinitePrefix]: Finished finitePrefix Result has 75 conditions, 65 events. 2/65 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 45 event pairs, 0 based on Foata normal form. 0/62 useless extension candidates. Maximal degree in co-relation 54. Up to 2 conditions per place. [2020-10-15 22:13:26,281 INFO L117 LiptonReduction]: Number of co-enabled transitions 1178 [2020-10-15 22:13:27,681 INFO L132 LiptonReduction]: Checked pairs total: 2372 [2020-10-15 22:13:27,682 INFO L134 LiptonReduction]: Total number of compositions: 57 [2020-10-15 22:13:27,688 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-10-15 22:13:27,714 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 274 states. [2020-10-15 22:13:27,716 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states. [2020-10-15 22:13:27,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-15 22:13:27,724 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 22:13:27,725 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 22:13:27,725 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 22:13:27,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 22:13:27,731 INFO L82 PathProgramCache]: Analyzing trace with hash 278619754, now seen corresponding path program 1 times [2020-10-15 22:13:27,741 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 22:13:27,742 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062699631] [2020-10-15 22:13:27,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 22:13:27,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 22:13:27,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 22:13:27,913 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062699631] [2020-10-15 22:13:27,914 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 22:13:27,914 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-15 22:13:27,915 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660623927] [2020-10-15 22:13:27,920 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-15 22:13:27,920 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 22:13:27,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-15 22:13:27,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-15 22:13:27,934 INFO L87 Difference]: Start difference. First operand 274 states. Second operand 2 states. [2020-10-15 22:13:27,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 22:13:27,963 INFO L93 Difference]: Finished difference Result 274 states and 786 transitions. [2020-10-15 22:13:27,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-15 22:13:27,965 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-10-15 22:13:27,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 22:13:27,982 INFO L225 Difference]: With dead ends: 274 [2020-10-15 22:13:27,983 INFO L226 Difference]: Without dead ends: 226 [2020-10-15 22:13:27,984 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-15 22:13:28,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2020-10-15 22:13:28,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 226. [2020-10-15 22:13:28,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2020-10-15 22:13:28,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 634 transitions. [2020-10-15 22:13:28,056 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 634 transitions. Word has length 8 [2020-10-15 22:13:28,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 22:13:28,057 INFO L481 AbstractCegarLoop]: Abstraction has 226 states and 634 transitions. [2020-10-15 22:13:28,057 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-15 22:13:28,058 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 634 transitions. [2020-10-15 22:13:28,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-15 22:13:28,059 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 22:13:28,059 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 22:13:28,060 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-15 22:13:28,060 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 22:13:28,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 22:13:28,061 INFO L82 PathProgramCache]: Analyzing trace with hash 47263938, now seen corresponding path program 1 times [2020-10-15 22:13:28,061 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 22:13:28,061 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942559723] [2020-10-15 22:13:28,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 22:13:28,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 22:13:28,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 22:13:28,225 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942559723] [2020-10-15 22:13:28,228 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 22:13:28,228 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 22:13:28,228 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744907709] [2020-10-15 22:13:28,233 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 22:13:28,233 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 22:13:28,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 22:13:28,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-15 22:13:28,234 INFO L87 Difference]: Start difference. First operand 226 states and 634 transitions. Second operand 5 states. [2020-10-15 22:13:28,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 22:13:28,347 INFO L93 Difference]: Finished difference Result 250 states and 668 transitions. [2020-10-15 22:13:28,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 22:13:28,348 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-10-15 22:13:28,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 22:13:28,351 INFO L225 Difference]: With dead ends: 250 [2020-10-15 22:13:28,351 INFO L226 Difference]: Without dead ends: 202 [2020-10-15 22:13:28,352 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-15 22:13:28,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-10-15 22:13:28,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2020-10-15 22:13:28,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-10-15 22:13:28,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 552 transitions. [2020-10-15 22:13:28,374 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 552 transitions. Word has length 9 [2020-10-15 22:13:28,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 22:13:28,375 INFO L481 AbstractCegarLoop]: Abstraction has 202 states and 552 transitions. [2020-10-15 22:13:28,375 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 22:13:28,375 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 552 transitions. [2020-10-15 22:13:28,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-15 22:13:28,377 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 22:13:28,377 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 22:13:28,377 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-15 22:13:28,377 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 22:13:28,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 22:13:28,378 INFO L82 PathProgramCache]: Analyzing trace with hash 1465143248, now seen corresponding path program 1 times [2020-10-15 22:13:28,378 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 22:13:28,379 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001606588] [2020-10-15 22:13:28,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 22:13:28,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 22:13:28,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 22:13:28,479 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001606588] [2020-10-15 22:13:28,480 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 22:13:28,480 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 22:13:28,480 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182153399] [2020-10-15 22:13:28,481 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 22:13:28,481 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 22:13:28,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 22:13:28,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-15 22:13:28,482 INFO L87 Difference]: Start difference. First operand 202 states and 552 transitions. Second operand 6 states. [2020-10-15 22:13:28,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 22:13:28,620 INFO L93 Difference]: Finished difference Result 262 states and 697 transitions. [2020-10-15 22:13:28,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-15 22:13:28,620 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-10-15 22:13:28,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 22:13:28,622 INFO L225 Difference]: With dead ends: 262 [2020-10-15 22:13:28,623 INFO L226 Difference]: Without dead ends: 154 [2020-10-15 22:13:28,623 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2020-10-15 22:13:28,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-10-15 22:13:28,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 154. [2020-10-15 22:13:28,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2020-10-15 22:13:28,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 392 transitions. [2020-10-15 22:13:28,637 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 392 transitions. Word has length 10 [2020-10-15 22:13:28,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 22:13:28,637 INFO L481 AbstractCegarLoop]: Abstraction has 154 states and 392 transitions. [2020-10-15 22:13:28,637 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 22:13:28,637 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 392 transitions. [2020-10-15 22:13:28,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-15 22:13:28,639 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 22:13:28,639 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 22:13:28,639 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-15 22:13:28,640 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 22:13:28,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 22:13:28,640 INFO L82 PathProgramCache]: Analyzing trace with hash -1312152701, now seen corresponding path program 1 times [2020-10-15 22:13:28,640 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 22:13:28,641 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936218675] [2020-10-15 22:13:28,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 22:13:28,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 22:13:28,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 22:13:28,742 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936218675] [2020-10-15 22:13:28,743 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 22:13:28,743 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-15 22:13:28,743 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581465615] [2020-10-15 22:13:28,744 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 22:13:28,744 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 22:13:28,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 22:13:28,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 22:13:28,745 INFO L87 Difference]: Start difference. First operand 154 states and 392 transitions. Second operand 4 states. [2020-10-15 22:13:28,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 22:13:28,764 INFO L93 Difference]: Finished difference Result 174 states and 426 transitions. [2020-10-15 22:13:28,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 22:13:28,764 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-10-15 22:13:28,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 22:13:28,766 INFO L225 Difference]: With dead ends: 174 [2020-10-15 22:13:28,766 INFO L226 Difference]: Without dead ends: 150 [2020-10-15 22:13:28,767 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 22:13:28,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2020-10-15 22:13:28,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 150. [2020-10-15 22:13:28,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2020-10-15 22:13:28,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 378 transitions. [2020-10-15 22:13:28,776 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 378 transitions. Word has length 11 [2020-10-15 22:13:28,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 22:13:28,777 INFO L481 AbstractCegarLoop]: Abstraction has 150 states and 378 transitions. [2020-10-15 22:13:28,777 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 22:13:28,777 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 378 transitions. [2020-10-15 22:13:28,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-15 22:13:28,779 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 22:13:28,779 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 22:13:28,779 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-15 22:13:28,779 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 22:13:28,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 22:13:28,780 INFO L82 PathProgramCache]: Analyzing trace with hash 266026162, now seen corresponding path program 1 times [2020-10-15 22:13:28,780 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 22:13:28,780 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418447869] [2020-10-15 22:13:28,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 22:13:28,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 22:13:28,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 22:13:28,836 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418447869] [2020-10-15 22:13:28,837 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 22:13:28,837 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 22:13:28,837 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148617296] [2020-10-15 22:13:28,838 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 22:13:28,838 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 22:13:28,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 22:13:28,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 22:13:28,839 INFO L87 Difference]: Start difference. First operand 150 states and 378 transitions. Second operand 4 states. [2020-10-15 22:13:28,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 22:13:28,869 INFO L93 Difference]: Finished difference Result 164 states and 376 transitions. [2020-10-15 22:13:28,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 22:13:28,870 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-10-15 22:13:28,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 22:13:28,871 INFO L225 Difference]: With dead ends: 164 [2020-10-15 22:13:28,872 INFO L226 Difference]: Without dead ends: 128 [2020-10-15 22:13:28,872 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 22:13:28,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2020-10-15 22:13:28,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2020-10-15 22:13:28,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-10-15 22:13:28,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 293 transitions. [2020-10-15 22:13:28,879 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 293 transitions. Word has length 12 [2020-10-15 22:13:28,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 22:13:28,880 INFO L481 AbstractCegarLoop]: Abstraction has 128 states and 293 transitions. [2020-10-15 22:13:28,880 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 22:13:28,880 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 293 transitions. [2020-10-15 22:13:28,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-15 22:13:28,882 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 22:13:28,882 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 22:13:28,882 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-15 22:13:28,882 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 22:13:28,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 22:13:28,883 INFO L82 PathProgramCache]: Analyzing trace with hash -1292455845, now seen corresponding path program 1 times [2020-10-15 22:13:28,883 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 22:13:28,883 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226598173] [2020-10-15 22:13:28,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 22:13:28,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 22:13:28,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 22:13:28,941 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226598173] [2020-10-15 22:13:28,941 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 22:13:28,941 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 22:13:28,942 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508279368] [2020-10-15 22:13:28,942 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 22:13:28,942 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 22:13:28,942 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 22:13:28,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-15 22:13:28,943 INFO L87 Difference]: Start difference. First operand 128 states and 293 transitions. Second operand 5 states. [2020-10-15 22:13:28,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 22:13:28,984 INFO L93 Difference]: Finished difference Result 116 states and 240 transitions. [2020-10-15 22:13:28,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 22:13:28,985 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-10-15 22:13:28,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 22:13:28,986 INFO L225 Difference]: With dead ends: 116 [2020-10-15 22:13:28,987 INFO L226 Difference]: Without dead ends: 92 [2020-10-15 22:13:28,987 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-15 22:13:28,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-10-15 22:13:28,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2020-10-15 22:13:28,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-10-15 22:13:28,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 186 transitions. [2020-10-15 22:13:28,992 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 186 transitions. Word has length 13 [2020-10-15 22:13:28,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 22:13:28,992 INFO L481 AbstractCegarLoop]: Abstraction has 92 states and 186 transitions. [2020-10-15 22:13:28,992 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 22:13:28,992 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 186 transitions. [2020-10-15 22:13:28,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-15 22:13:28,993 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 22:13:28,994 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 22:13:28,994 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-15 22:13:28,994 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 22:13:28,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 22:13:28,994 INFO L82 PathProgramCache]: Analyzing trace with hash -228576461, now seen corresponding path program 1 times [2020-10-15 22:13:28,995 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 22:13:28,995 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409251328] [2020-10-15 22:13:28,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 22:13:29,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 22:13:29,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 22:13:29,044 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409251328] [2020-10-15 22:13:29,044 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 22:13:29,044 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 22:13:29,044 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966427873] [2020-10-15 22:13:29,045 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 22:13:29,045 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 22:13:29,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 22:13:29,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 22:13:29,046 INFO L87 Difference]: Start difference. First operand 92 states and 186 transitions. Second operand 4 states. [2020-10-15 22:13:29,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 22:13:29,066 INFO L93 Difference]: Finished difference Result 120 states and 228 transitions. [2020-10-15 22:13:29,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 22:13:29,067 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-10-15 22:13:29,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 22:13:29,068 INFO L225 Difference]: With dead ends: 120 [2020-10-15 22:13:29,068 INFO L226 Difference]: Without dead ends: 94 [2020-10-15 22:13:29,068 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 22:13:29,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-10-15 22:13:29,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 90. [2020-10-15 22:13:29,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-10-15 22:13:29,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 175 transitions. [2020-10-15 22:13:29,072 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 175 transitions. Word has length 14 [2020-10-15 22:13:29,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 22:13:29,073 INFO L481 AbstractCegarLoop]: Abstraction has 90 states and 175 transitions. [2020-10-15 22:13:29,073 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 22:13:29,073 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 175 transitions. [2020-10-15 22:13:29,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-15 22:13:29,074 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 22:13:29,074 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 22:13:29,074 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-15 22:13:29,075 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 22:13:29,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 22:13:29,075 INFO L82 PathProgramCache]: Analyzing trace with hash -1357686433, now seen corresponding path program 1 times [2020-10-15 22:13:29,075 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 22:13:29,075 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392813850] [2020-10-15 22:13:29,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 22:13:29,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 22:13:29,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 22:13:29,166 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392813850] [2020-10-15 22:13:29,167 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 22:13:29,167 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-15 22:13:29,167 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807885051] [2020-10-15 22:13:29,168 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 22:13:29,168 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 22:13:29,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 22:13:29,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-15 22:13:29,169 INFO L87 Difference]: Start difference. First operand 90 states and 175 transitions. Second operand 9 states. [2020-10-15 22:13:29,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 22:13:29,299 INFO L93 Difference]: Finished difference Result 119 states and 221 transitions. [2020-10-15 22:13:29,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-15 22:13:29,299 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 15 [2020-10-15 22:13:29,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 22:13:29,300 INFO L225 Difference]: With dead ends: 119 [2020-10-15 22:13:29,301 INFO L226 Difference]: Without dead ends: 76 [2020-10-15 22:13:29,301 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2020-10-15 22:13:29,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-10-15 22:13:29,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 72. [2020-10-15 22:13:29,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-10-15 22:13:29,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 123 transitions. [2020-10-15 22:13:29,305 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 123 transitions. Word has length 15 [2020-10-15 22:13:29,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 22:13:29,305 INFO L481 AbstractCegarLoop]: Abstraction has 72 states and 123 transitions. [2020-10-15 22:13:29,305 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 22:13:29,305 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 123 transitions. [2020-10-15 22:13:29,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-15 22:13:29,306 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 22:13:29,306 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 22:13:29,306 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-15 22:13:29,307 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 22:13:29,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 22:13:29,307 INFO L82 PathProgramCache]: Analyzing trace with hash 1504039886, now seen corresponding path program 1 times [2020-10-15 22:13:29,307 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 22:13:29,308 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159571806] [2020-10-15 22:13:29,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 22:13:29,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 22:13:29,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 22:13:29,383 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159571806] [2020-10-15 22:13:29,383 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 22:13:29,383 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 22:13:29,383 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647470957] [2020-10-15 22:13:29,384 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 22:13:29,386 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 22:13:29,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 22:13:29,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-15 22:13:29,387 INFO L87 Difference]: Start difference. First operand 72 states and 123 transitions. Second operand 6 states. [2020-10-15 22:13:29,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 22:13:29,440 INFO L93 Difference]: Finished difference Result 65 states and 108 transitions. [2020-10-15 22:13:29,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 22:13:29,440 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-10-15 22:13:29,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 22:13:29,441 INFO L225 Difference]: With dead ends: 65 [2020-10-15 22:13:29,441 INFO L226 Difference]: Without dead ends: 28 [2020-10-15 22:13:29,441 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-10-15 22:13:29,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-10-15 22:13:29,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-10-15 22:13:29,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-10-15 22:13:29,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 38 transitions. [2020-10-15 22:13:29,445 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 38 transitions. Word has length 15 [2020-10-15 22:13:29,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 22:13:29,446 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 38 transitions. [2020-10-15 22:13:29,446 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 22:13:29,447 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 38 transitions. [2020-10-15 22:13:29,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-15 22:13:29,447 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 22:13:29,448 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 22:13:29,450 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-15 22:13:29,450 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 22:13:29,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 22:13:29,450 INFO L82 PathProgramCache]: Analyzing trace with hash 1777188338, now seen corresponding path program 1 times [2020-10-15 22:13:29,451 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 22:13:29,451 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647158825] [2020-10-15 22:13:29,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 22:13:29,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 22:13:29,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 22:13:29,625 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647158825] [2020-10-15 22:13:29,625 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 22:13:29,625 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-15 22:13:29,625 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291045261] [2020-10-15 22:13:29,626 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-15 22:13:29,626 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 22:13:29,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-15 22:13:29,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-10-15 22:13:29,628 INFO L87 Difference]: Start difference. First operand 28 states and 38 transitions. Second operand 10 states. [2020-10-15 22:13:29,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 22:13:29,705 INFO L93 Difference]: Finished difference Result 27 states and 37 transitions. [2020-10-15 22:13:29,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-15 22:13:29,705 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2020-10-15 22:13:29,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 22:13:29,706 INFO L225 Difference]: With dead ends: 27 [2020-10-15 22:13:29,706 INFO L226 Difference]: Without dead ends: 0 [2020-10-15 22:13:29,707 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-10-15 22:13:29,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-15 22:13:29,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-15 22:13:29,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-15 22:13:29,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-15 22:13:29,708 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-10-15 22:13:29,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 22:13:29,708 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-15 22:13:29,708 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-15 22:13:29,708 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-15 22:13:29,708 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-15 22:13:29,709 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-15 22:13:29,713 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 10:13:29 BasicIcfg [2020-10-15 22:13:29,713 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-15 22:13:29,716 INFO L168 Benchmark]: Toolchain (without parser) took 4817.71 ms. Allocated memory was 250.6 MB in the beginning and 368.6 MB in the end (delta: 118.0 MB). Free memory was 205.9 MB in the beginning and 187.8 MB in the end (delta: 18.1 MB). Peak memory consumption was 136.1 MB. Max. memory is 14.2 GB. [2020-10-15 22:13:29,717 INFO L168 Benchmark]: CDTParser took 0.38 ms. Allocated memory is still 250.6 MB. Free memory is still 227.0 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-15 22:13:29,718 INFO L168 Benchmark]: CACSL2BoogieTranslator took 702.36 ms. Allocated memory was 250.6 MB in the beginning and 312.0 MB in the end (delta: 61.3 MB). Free memory was 205.9 MB in the beginning and 266.8 MB in the end (delta: -60.9 MB). Peak memory consumption was 33.4 MB. Max. memory is 14.2 GB. [2020-10-15 22:13:29,724 INFO L168 Benchmark]: Boogie Procedure Inliner took 46.02 ms. Allocated memory is still 312.0 MB. Free memory was 266.8 MB in the beginning and 264.3 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-15 22:13:29,726 INFO L168 Benchmark]: Boogie Preprocessor took 26.59 ms. Allocated memory is still 312.0 MB. Free memory was 264.3 MB in the beginning and 261.8 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-15 22:13:29,727 INFO L168 Benchmark]: RCFGBuilder took 380.12 ms. Allocated memory is still 312.0 MB. Free memory was 261.8 MB in the beginning and 240.0 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 14.2 GB. [2020-10-15 22:13:29,729 INFO L168 Benchmark]: TraceAbstraction took 3656.29 ms. Allocated memory was 312.0 MB in the beginning and 368.6 MB in the end (delta: 56.6 MB). Free memory was 240.0 MB in the beginning and 187.8 MB in the end (delta: 52.1 MB). Peak memory consumption was 108.7 MB. Max. memory is 14.2 GB. [2020-10-15 22:13:29,741 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.38 ms. Allocated memory is still 250.6 MB. Free memory is still 227.0 MB. There was no memory consumed. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 702.36 ms. Allocated memory was 250.6 MB in the beginning and 312.0 MB in the end (delta: 61.3 MB). Free memory was 205.9 MB in the beginning and 266.8 MB in the end (delta: -60.9 MB). Peak memory consumption was 33.4 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 46.02 ms. Allocated memory is still 312.0 MB. Free memory was 266.8 MB in the beginning and 264.3 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * Boogie Preprocessor took 26.59 ms. Allocated memory is still 312.0 MB. Free memory was 264.3 MB in the beginning and 261.8 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * RCFGBuilder took 380.12 ms. Allocated memory is still 312.0 MB. Free memory was 261.8 MB in the beginning and 240.0 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 14.2 GB. * TraceAbstraction took 3656.29 ms. Allocated memory was 312.0 MB in the beginning and 368.6 MB in the end (delta: 56.6 MB). Free memory was 240.0 MB in the beginning and 187.8 MB in the end (delta: 52.1 MB). Peak memory consumption was 108.7 MB. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 738 VarBasedMoverChecksPositive, 34 VarBasedMoverChecksNegative, 6 SemBasedMoverChecksPositive, 28 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 44 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.4s, 76 PlacesBefore, 31 PlacesAfterwards, 68 TransitionsBefore, 22 TransitionsAfterwards, 1178 CoEnabledTransitionPairs, 6 FixpointIterations, 13 TrivialSequentialCompositions, 35 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 1 ChoiceCompositions, 57 TotalNumberOfCompositions, 2372 MoverChecksTotal - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 67 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.5s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.5s, HoareTripleCheckerStatistics: 186 SDtfs, 233 SDslu, 439 SDs, 0 SdLazy, 320 SolverSat, 53 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 60 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=274occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 10 MinimizatonAttempts, 8 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 124 NumberOfCodeBlocks, 124 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 114 ConstructedInterpolants, 0 QuantifiedInterpolants, 6072 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...