/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/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-SP.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe016_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-1d1d2b5 [2020-10-22 02:15:52,524 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-22 02:15:52,528 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-22 02:15:52,571 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-22 02:15:52,572 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-22 02:15:52,580 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-22 02:15:52,583 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-22 02:15:52,587 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-22 02:15:52,590 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-22 02:15:52,593 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-22 02:15:52,594 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-22 02:15:52,595 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-22 02:15:52,595 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-22 02:15:52,598 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-22 02:15:52,601 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-22 02:15:52,602 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-22 02:15:52,604 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-22 02:15:52,606 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-22 02:15:52,607 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-22 02:15:52,615 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-22 02:15:52,618 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-22 02:15:52,620 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-22 02:15:52,621 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-22 02:15:52,622 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-22 02:15:52,635 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-22 02:15:52,636 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-22 02:15:52,641 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-22 02:15:52,642 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-22 02:15:52,643 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-22 02:15:52,647 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-22 02:15:52,647 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-22 02:15:52,648 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-22 02:15:52,648 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-22 02:15:52,649 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-22 02:15:52,653 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-22 02:15:52,653 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-22 02:15:52,654 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-22 02:15:52,654 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-22 02:15:52,655 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-22 02:15:52,656 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-22 02:15:52,656 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-22 02:15:52,657 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-SP.epf [2020-10-22 02:15:52,679 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-22 02:15:52,679 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-22 02:15:52,680 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-22 02:15:52,681 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-22 02:15:52,681 INFO L138 SettingsManager]: * Use SBE=true [2020-10-22 02:15:52,681 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-22 02:15:52,681 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-22 02:15:52,681 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-22 02:15:52,682 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-22 02:15:52,682 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-22 02:15:52,682 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-22 02:15:52,682 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-22 02:15:52,682 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-22 02:15:52,682 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-22 02:15:52,683 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-22 02:15:52,683 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-22 02:15:52,683 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-22 02:15:52,683 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-22 02:15:52,683 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-22 02:15:52,684 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-22 02:15:52,684 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-22 02:15:52,684 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-22 02:15:52,684 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-22 02:15:52,684 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-10-22 02:15:52,685 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-22 02:15:52,685 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-22 02:15:52,685 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-22 02:15:52,685 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-10-22 02:15:52,685 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-10-22 02:15:52,685 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-22 02:15:52,686 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2020-10-22 02:15:53,002 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-22 02:15:53,015 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-22 02:15:53,019 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-22 02:15:53,021 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-22 02:15:53,021 INFO L275 PluginConnector]: CDTParser initialized [2020-10-22 02:15:53,022 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe016_tso.oepc.i [2020-10-22 02:15:53,087 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5592adc70/9405f0a85d94457cb4f7804827837279/FLAG7391c4c39 [2020-10-22 02:15:53,747 INFO L306 CDTParser]: Found 1 translation units. [2020-10-22 02:15:53,747 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe016_tso.oepc.i [2020-10-22 02:15:53,762 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5592adc70/9405f0a85d94457cb4f7804827837279/FLAG7391c4c39 [2020-10-22 02:15:54,048 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5592adc70/9405f0a85d94457cb4f7804827837279 [2020-10-22 02:15:54,057 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-22 02:15:54,064 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-22 02:15:54,065 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-22 02:15:54,066 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-22 02:15:54,069 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-22 02:15:54,070 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 02:15:54" (1/1) ... [2020-10-22 02:15:54,073 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e75f197 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:15:54, skipping insertion in model container [2020-10-22 02:15:54,074 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 02:15:54" (1/1) ... [2020-10-22 02:15:54,082 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-22 02:15:54,156 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-22 02:15:54,773 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-22 02:15:54,787 INFO L203 MainTranslator]: Completed pre-run [2020-10-22 02:15:54,865 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-22 02:15:54,940 INFO L208 MainTranslator]: Completed translation [2020-10-22 02:15:54,941 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:15:54 WrapperNode [2020-10-22 02:15:54,941 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-22 02:15:54,942 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-22 02:15:54,942 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-22 02:15:54,942 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-22 02:15:54,952 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:15:54" (1/1) ... [2020-10-22 02:15:54,970 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:15:54" (1/1) ... [2020-10-22 02:15:54,996 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-22 02:15:54,997 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-22 02:15:54,997 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-22 02:15:54,997 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-22 02:15:55,007 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:15:54" (1/1) ... [2020-10-22 02:15:55,008 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:15:54" (1/1) ... [2020-10-22 02:15:55,011 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:15:54" (1/1) ... [2020-10-22 02:15:55,011 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:15:54" (1/1) ... [2020-10-22 02:15:55,019 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:15:54" (1/1) ... [2020-10-22 02:15:55,022 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:15:54" (1/1) ... [2020-10-22 02:15:55,024 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:15:54" (1/1) ... [2020-10-22 02:15:55,028 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-22 02:15:55,029 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-22 02:15:55,029 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-22 02:15:55,029 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-22 02:15:55,031 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:15:54" (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 [2020-10-22 02:15:55,102 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-22 02:15:55,102 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-22 02:15:55,103 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-22 02:15:55,103 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-22 02:15:55,103 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-22 02:15:55,103 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-22 02:15:55,104 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-22 02:15:55,104 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-22 02:15:55,104 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-22 02:15:55,104 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-22 02:15:55,104 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2020-10-22 02:15:55,105 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2020-10-22 02:15:55,105 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-22 02:15:55,105 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-22 02:15:55,105 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-22 02:15:55,105 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-22 02:15:55,107 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-22 02:15:55,497 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-22 02:15:55,497 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-10-22 02:15:55,500 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 02:15:55 BoogieIcfgContainer [2020-10-22 02:15:55,500 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-22 02:15:55,502 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-22 02:15:55,502 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-22 02:15:55,506 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-22 02:15:55,506 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 02:15:54" (1/3) ... [2020-10-22 02:15:55,507 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@dd07b3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 02:15:55, skipping insertion in model container [2020-10-22 02:15:55,507 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:15:54" (2/3) ... [2020-10-22 02:15:55,508 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@dd07b3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 02:15:55, skipping insertion in model container [2020-10-22 02:15:55,508 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 02:15:55" (3/3) ... [2020-10-22 02:15:55,510 INFO L111 eAbstractionObserver]: Analyzing ICFG safe016_tso.oepc.i [2020-10-22 02:15:55,523 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-22 02:15:55,523 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-22 02:15:55,532 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-22 02:15:55,533 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-22 02:15:55,570 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:15:55,570 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:15:55,571 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:15:55,571 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:15:55,572 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:15:55,572 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:15:55,572 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:15:55,573 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:15:55,573 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:15:55,573 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:15:55,574 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:15:55,574 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:15:55,574 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:15:55,575 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:15:55,575 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:15:55,575 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:15:55,576 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:15:55,576 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:15:55,576 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:15:55,577 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:15:55,577 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:15:55,577 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:15:55,578 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:15:55,578 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:15:55,583 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:15:55,583 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:15:55,583 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:15:55,583 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:15:55,608 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:15:55,609 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:15:55,609 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:15:55,609 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:15:55,622 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:15:55,622 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:15:55,623 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:15:55,623 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:15:55,636 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:15:55,636 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:15:55,637 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:15:55,637 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:15:55,643 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-22 02:15:55,660 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-10-22 02:15:55,683 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-22 02:15:55,684 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-22 02:15:55,684 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-22 02:15:55,684 INFO L380 AbstractCegarLoop]: Backedges is MCR [2020-10-22 02:15:55,684 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-22 02:15:55,685 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-22 02:15:55,686 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-22 02:15:55,686 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-22 02:15:55,709 INFO L137 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-10-22 02:15:55,710 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 99 places, 89 transitions, 198 flow [2020-10-22 02:15:55,713 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 99 places, 89 transitions, 198 flow [2020-10-22 02:15:55,715 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 99 places, 89 transitions, 198 flow [2020-10-22 02:15:55,770 INFO L129 PetriNetUnfolder]: 3/85 cut-off events. [2020-10-22 02:15:55,770 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-22 02:15:55,777 INFO L80 FinitePrefix]: Finished finitePrefix Result has 98 conditions, 85 events. 3/85 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 72 event pairs, 0 based on Foata normal form. 0/81 useless extension candidates. Maximal degree in co-relation 72. Up to 2 conditions per place. [2020-10-22 02:15:55,781 INFO L116 LiptonReduction]: Number of co-enabled transitions 2042 [2020-10-22 02:15:57,601 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2020-10-22 02:15:57,815 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 46 [2020-10-22 02:15:57,861 INFO L131 LiptonReduction]: Checked pairs total: 4334 [2020-10-22 02:15:57,861 INFO L133 LiptonReduction]: Total number of compositions: 82 [2020-10-22 02:15:57,869 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 38 places, 26 transitions, 72 flow [2020-10-22 02:15:57,917 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 706 states. [2020-10-22 02:15:57,920 INFO L276 IsEmpty]: Start isEmpty. Operand 706 states. [2020-10-22 02:15:57,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-22 02:15:57,931 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 02:15:57,932 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 02:15:57,933 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 02:15:57,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 02:15:57,940 INFO L82 PathProgramCache]: Analyzing trace with hash -782796091, now seen corresponding path program 1 times [2020-10-22 02:15:57,967 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 02:15:57,967 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684287292] [2020-10-22 02:15:57,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 02:15:58,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 02:15:58,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 02:15:58,216 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684287292] [2020-10-22 02:15:58,218 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 02:15:58,218 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-22 02:15:58,219 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [454015602] [2020-10-22 02:15:58,221 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 02:15:58,226 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 02:15:58,249 INFO L252 McrAutomatonBuilder]: Finished intersection with 11 states and 10 transitions. [2020-10-22 02:15:58,250 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 02:15:58,260 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 02:15:58,261 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-22 02:15:58,261 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 02:15:58,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-22 02:15:58,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-22 02:15:58,287 INFO L87 Difference]: Start difference. First operand 706 states. Second operand 3 states. [2020-10-22 02:15:58,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 02:15:58,341 INFO L93 Difference]: Finished difference Result 682 states and 2336 transitions. [2020-10-22 02:15:58,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-22 02:15:58,343 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-10-22 02:15:58,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 02:15:58,369 INFO L225 Difference]: With dead ends: 682 [2020-10-22 02:15:58,369 INFO L226 Difference]: Without dead ends: 538 [2020-10-22 02:15:58,371 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-22 02:15:58,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 538 states. [2020-10-22 02:15:58,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 538 to 538. [2020-10-22 02:15:58,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 538 states. [2020-10-22 02:15:58,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 538 states to 538 states and 1784 transitions. [2020-10-22 02:15:58,477 INFO L78 Accepts]: Start accepts. Automaton has 538 states and 1784 transitions. Word has length 10 [2020-10-22 02:15:58,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 02:15:58,479 INFO L481 AbstractCegarLoop]: Abstraction has 538 states and 1784 transitions. [2020-10-22 02:15:58,479 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-22 02:15:58,479 INFO L276 IsEmpty]: Start isEmpty. Operand 538 states and 1784 transitions. [2020-10-22 02:15:58,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-22 02:15:58,482 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 02:15:58,482 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 02:15:58,483 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-22 02:15:58,483 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 02:15:58,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 02:15:58,483 INFO L82 PathProgramCache]: Analyzing trace with hash 1503123814, now seen corresponding path program 1 times [2020-10-22 02:15:58,487 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 02:15:58,487 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970990847] [2020-10-22 02:15:58,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 02:15:58,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 02:15:58,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 02:15:58,572 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970990847] [2020-10-22 02:15:58,572 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 02:15:58,572 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-22 02:15:58,572 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [148797025] [2020-10-22 02:15:58,573 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 02:15:58,574 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 02:15:58,576 INFO L252 McrAutomatonBuilder]: Finished intersection with 17 states and 21 transitions. [2020-10-22 02:15:58,576 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 02:15:58,662 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 02:15:58,664 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-22 02:15:58,664 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 02:15:58,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-22 02:15:58,665 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-22 02:15:58,665 INFO L87 Difference]: Start difference. First operand 538 states and 1784 transitions. Second operand 3 states. [2020-10-22 02:15:58,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 02:15:58,677 INFO L93 Difference]: Finished difference Result 508 states and 1665 transitions. [2020-10-22 02:15:58,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-22 02:15:58,677 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-10-22 02:15:58,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 02:15:58,683 INFO L225 Difference]: With dead ends: 508 [2020-10-22 02:15:58,684 INFO L226 Difference]: Without dead ends: 508 [2020-10-22 02:15:58,685 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-22 02:15:58,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 508 states. [2020-10-22 02:15:58,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 508 to 508. [2020-10-22 02:15:58,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 508 states. [2020-10-22 02:15:58,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 508 states to 508 states and 1665 transitions. [2020-10-22 02:15:58,713 INFO L78 Accepts]: Start accepts. Automaton has 508 states and 1665 transitions. Word has length 11 [2020-10-22 02:15:58,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 02:15:58,713 INFO L481 AbstractCegarLoop]: Abstraction has 508 states and 1665 transitions. [2020-10-22 02:15:58,713 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-22 02:15:58,713 INFO L276 IsEmpty]: Start isEmpty. Operand 508 states and 1665 transitions. [2020-10-22 02:15:58,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-22 02:15:58,716 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 02:15:58,717 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 02:15:58,717 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-22 02:15:58,717 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 02:15:58,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 02:15:58,717 INFO L82 PathProgramCache]: Analyzing trace with hash -1088809907, now seen corresponding path program 1 times [2020-10-22 02:15:58,720 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 02:15:58,720 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769475034] [2020-10-22 02:15:58,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 02:15:58,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 02:15:58,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 02:15:58,816 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769475034] [2020-10-22 02:15:58,817 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 02:15:58,818 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-22 02:15:58,818 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [746807943] [2020-10-22 02:15:58,818 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 02:15:58,820 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 02:15:58,823 INFO L252 McrAutomatonBuilder]: Finished intersection with 19 states and 24 transitions. [2020-10-22 02:15:58,824 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 02:15:58,920 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 02:15:58,921 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-22 02:15:58,921 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 02:15:58,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-22 02:15:58,921 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-22 02:15:58,922 INFO L87 Difference]: Start difference. First operand 508 states and 1665 transitions. Second operand 4 states. [2020-10-22 02:15:58,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 02:15:58,957 INFO L93 Difference]: Finished difference Result 748 states and 2407 transitions. [2020-10-22 02:15:58,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-22 02:15:58,958 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-10-22 02:15:58,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 02:15:58,962 INFO L225 Difference]: With dead ends: 748 [2020-10-22 02:15:58,962 INFO L226 Difference]: Without dead ends: 460 [2020-10-22 02:15:58,963 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-22 02:15:58,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 460 states. [2020-10-22 02:15:58,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 460 to 460. [2020-10-22 02:15:58,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 460 states. [2020-10-22 02:15:58,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 460 states to 460 states and 1467 transitions. [2020-10-22 02:15:58,980 INFO L78 Accepts]: Start accepts. Automaton has 460 states and 1467 transitions. Word has length 12 [2020-10-22 02:15:58,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 02:15:58,981 INFO L481 AbstractCegarLoop]: Abstraction has 460 states and 1467 transitions. [2020-10-22 02:15:58,981 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-22 02:15:58,981 INFO L276 IsEmpty]: Start isEmpty. Operand 460 states and 1467 transitions. [2020-10-22 02:15:58,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-22 02:15:58,983 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 02:15:58,984 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 02:15:58,984 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-22 02:15:58,984 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 02:15:58,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 02:15:58,984 INFO L82 PathProgramCache]: Analyzing trace with hash -647802977, now seen corresponding path program 2 times [2020-10-22 02:15:58,986 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 02:15:58,986 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006915605] [2020-10-22 02:15:58,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 02:15:59,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 02:15:59,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 02:15:59,056 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006915605] [2020-10-22 02:15:59,056 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 02:15:59,057 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-22 02:15:59,057 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1515932513] [2020-10-22 02:15:59,060 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 02:15:59,062 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 02:15:59,066 INFO L252 McrAutomatonBuilder]: Finished intersection with 21 states and 28 transitions. [2020-10-22 02:15:59,066 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 02:15:59,250 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 02:15:59,250 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-22 02:15:59,250 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 02:15:59,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-22 02:15:59,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-22 02:15:59,252 INFO L87 Difference]: Start difference. First operand 460 states and 1467 transitions. Second operand 3 states. [2020-10-22 02:15:59,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 02:15:59,265 INFO L93 Difference]: Finished difference Result 450 states and 1424 transitions. [2020-10-22 02:15:59,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-22 02:15:59,266 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2020-10-22 02:15:59,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 02:15:59,270 INFO L225 Difference]: With dead ends: 450 [2020-10-22 02:15:59,271 INFO L226 Difference]: Without dead ends: 450 [2020-10-22 02:15:59,275 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-22 02:15:59,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states. [2020-10-22 02:15:59,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 450. [2020-10-22 02:15:59,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 450 states. [2020-10-22 02:15:59,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 450 states to 450 states and 1424 transitions. [2020-10-22 02:15:59,303 INFO L78 Accepts]: Start accepts. Automaton has 450 states and 1424 transitions. Word has length 12 [2020-10-22 02:15:59,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 02:15:59,304 INFO L481 AbstractCegarLoop]: Abstraction has 450 states and 1424 transitions. [2020-10-22 02:15:59,304 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-22 02:15:59,304 INFO L276 IsEmpty]: Start isEmpty. Operand 450 states and 1424 transitions. [2020-10-22 02:15:59,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-22 02:15:59,308 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 02:15:59,308 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 02:15:59,308 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-22 02:15:59,309 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 02:15:59,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 02:15:59,309 INFO L82 PathProgramCache]: Analyzing trace with hash 1393146009, now seen corresponding path program 1 times [2020-10-22 02:15:59,310 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 02:15:59,310 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048725571] [2020-10-22 02:15:59,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 02:15:59,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 02:15:59,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 02:15:59,376 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048725571] [2020-10-22 02:15:59,376 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 02:15:59,377 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-22 02:15:59,377 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [5591428] [2020-10-22 02:15:59,377 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 02:15:59,378 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 02:15:59,381 INFO L252 McrAutomatonBuilder]: Finished intersection with 27 states and 41 transitions. [2020-10-22 02:15:59,381 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 02:15:59,544 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 02:15:59,544 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-22 02:15:59,544 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 02:15:59,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-22 02:15:59,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-22 02:15:59,545 INFO L87 Difference]: Start difference. First operand 450 states and 1424 transitions. Second operand 3 states. [2020-10-22 02:15:59,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 02:15:59,553 INFO L93 Difference]: Finished difference Result 434 states and 1364 transitions. [2020-10-22 02:15:59,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-22 02:15:59,554 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2020-10-22 02:15:59,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 02:15:59,557 INFO L225 Difference]: With dead ends: 434 [2020-10-22 02:15:59,557 INFO L226 Difference]: Without dead ends: 434 [2020-10-22 02:15:59,558 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-22 02:15:59,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2020-10-22 02:15:59,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 434. [2020-10-22 02:15:59,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 434 states. [2020-10-22 02:15:59,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 1364 transitions. [2020-10-22 02:15:59,572 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 1364 transitions. Word has length 13 [2020-10-22 02:15:59,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 02:15:59,573 INFO L481 AbstractCegarLoop]: Abstraction has 434 states and 1364 transitions. [2020-10-22 02:15:59,573 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-22 02:15:59,573 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 1364 transitions. [2020-10-22 02:15:59,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-22 02:15:59,574 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 02:15:59,574 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 02:15:59,575 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-22 02:15:59,575 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 02:15:59,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 02:15:59,575 INFO L82 PathProgramCache]: Analyzing trace with hash 1766105033, now seen corresponding path program 1 times [2020-10-22 02:15:59,576 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 02:15:59,576 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585774606] [2020-10-22 02:15:59,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 02:15:59,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 02:15:59,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 02:15:59,609 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585774606] [2020-10-22 02:15:59,609 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 02:15:59,609 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-22 02:15:59,610 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1899838004] [2020-10-22 02:15:59,610 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 02:15:59,611 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 02:15:59,615 INFO L252 McrAutomatonBuilder]: Finished intersection with 37 states and 60 transitions. [2020-10-22 02:15:59,615 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 02:15:59,725 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 02:15:59,725 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-22 02:15:59,726 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 02:15:59,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-22 02:15:59,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-22 02:15:59,727 INFO L87 Difference]: Start difference. First operand 434 states and 1364 transitions. Second operand 3 states. [2020-10-22 02:15:59,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 02:15:59,751 INFO L93 Difference]: Finished difference Result 586 states and 1760 transitions. [2020-10-22 02:15:59,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-22 02:15:59,752 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2020-10-22 02:15:59,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 02:15:59,758 INFO L225 Difference]: With dead ends: 586 [2020-10-22 02:15:59,758 INFO L226 Difference]: Without dead ends: 450 [2020-10-22 02:15:59,759 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-22 02:15:59,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states. [2020-10-22 02:15:59,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 418. [2020-10-22 02:15:59,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 418 states. [2020-10-22 02:15:59,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 1236 transitions. [2020-10-22 02:15:59,787 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 1236 transitions. Word has length 14 [2020-10-22 02:15:59,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 02:15:59,787 INFO L481 AbstractCegarLoop]: Abstraction has 418 states and 1236 transitions. [2020-10-22 02:15:59,787 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-22 02:15:59,788 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 1236 transitions. [2020-10-22 02:15:59,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-22 02:15:59,790 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 02:15:59,790 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 02:15:59,790 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-22 02:15:59,790 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 02:15:59,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 02:15:59,791 INFO L82 PathProgramCache]: Analyzing trace with hash -426929628, now seen corresponding path program 1 times [2020-10-22 02:15:59,792 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 02:15:59,793 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998035715] [2020-10-22 02:15:59,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 02:15:59,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 02:15:59,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 02:15:59,867 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998035715] [2020-10-22 02:15:59,867 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 02:15:59,867 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-22 02:15:59,868 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [971059557] [2020-10-22 02:15:59,868 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 02:15:59,869 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 02:15:59,876 INFO L252 McrAutomatonBuilder]: Finished intersection with 45 states and 84 transitions. [2020-10-22 02:15:59,877 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 02:16:00,271 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 02:16:00,271 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-22 02:16:00,272 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 02:16:00,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-22 02:16:00,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-22 02:16:00,272 INFO L87 Difference]: Start difference. First operand 418 states and 1236 transitions. Second operand 4 states. [2020-10-22 02:16:00,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 02:16:00,304 INFO L93 Difference]: Finished difference Result 566 states and 1628 transitions. [2020-10-22 02:16:00,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-22 02:16:00,305 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-10-22 02:16:00,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 02:16:00,311 INFO L225 Difference]: With dead ends: 566 [2020-10-22 02:16:00,311 INFO L226 Difference]: Without dead ends: 278 [2020-10-22 02:16:00,311 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-22 02:16:00,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2020-10-22 02:16:00,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 278. [2020-10-22 02:16:00,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 278 states. [2020-10-22 02:16:00,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 791 transitions. [2020-10-22 02:16:00,324 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 791 transitions. Word has length 14 [2020-10-22 02:16:00,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 02:16:00,325 INFO L481 AbstractCegarLoop]: Abstraction has 278 states and 791 transitions. [2020-10-22 02:16:00,325 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-22 02:16:00,325 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 791 transitions. [2020-10-22 02:16:00,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-22 02:16:00,326 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 02:16:00,326 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 02:16:00,326 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-22 02:16:00,327 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 02:16:00,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 02:16:00,327 INFO L82 PathProgramCache]: Analyzing trace with hash 238144508, now seen corresponding path program 2 times [2020-10-22 02:16:00,333 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 02:16:00,333 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203175600] [2020-10-22 02:16:00,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 02:16:00,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 02:16:00,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 02:16:00,439 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203175600] [2020-10-22 02:16:00,439 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 02:16:00,440 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-22 02:16:00,440 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [60547997] [2020-10-22 02:16:00,440 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 02:16:00,443 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 02:16:00,474 INFO L252 McrAutomatonBuilder]: Finished intersection with 33 states and 54 transitions. [2020-10-22 02:16:00,475 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 02:16:00,517 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-10-22 02:16:00,557 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-10-22 02:16:00,600 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-10-22 02:16:00,704 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-10-22 02:16:00,794 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [11691#(not (= 4 ~__unbuffered_cnt~0))] [2020-10-22 02:16:00,795 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-22 02:16:00,795 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 02:16:00,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-22 02:16:00,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-22 02:16:00,796 INFO L87 Difference]: Start difference. First operand 278 states and 791 transitions. Second operand 5 states. [2020-10-22 02:16:00,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 02:16:00,876 INFO L93 Difference]: Finished difference Result 292 states and 753 transitions. [2020-10-22 02:16:00,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-22 02:16:00,876 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-10-22 02:16:00,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 02:16:00,878 INFO L225 Difference]: With dead ends: 292 [2020-10-22 02:16:00,878 INFO L226 Difference]: Without dead ends: 195 [2020-10-22 02:16:00,878 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-22 02:16:00,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2020-10-22 02:16:00,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 195. [2020-10-22 02:16:00,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 195 states. [2020-10-22 02:16:00,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 465 transitions. [2020-10-22 02:16:00,886 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 465 transitions. Word has length 14 [2020-10-22 02:16:00,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 02:16:00,887 INFO L481 AbstractCegarLoop]: Abstraction has 195 states and 465 transitions. [2020-10-22 02:16:00,887 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-22 02:16:00,887 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 465 transitions. [2020-10-22 02:16:00,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-22 02:16:00,888 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 02:16:00,888 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 02:16:00,888 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-22 02:16:00,888 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 02:16:00,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 02:16:00,889 INFO L82 PathProgramCache]: Analyzing trace with hash -1046603743, now seen corresponding path program 1 times [2020-10-22 02:16:00,890 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 02:16:00,890 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426148302] [2020-10-22 02:16:00,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 02:16:00,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 02:16:00,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 02:16:00,948 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426148302] [2020-10-22 02:16:00,948 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 02:16:00,948 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-22 02:16:00,948 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [72772384] [2020-10-22 02:16:00,948 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 02:16:00,950 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 02:16:00,955 INFO L252 McrAutomatonBuilder]: Finished intersection with 38 states and 62 transitions. [2020-10-22 02:16:00,955 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 02:16:01,224 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [12384#(<= ~__unbuffered_cnt~0 0)] [2020-10-22 02:16:01,224 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-22 02:16:01,225 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 02:16:01,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-22 02:16:01,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-22 02:16:01,225 INFO L87 Difference]: Start difference. First operand 195 states and 465 transitions. Second operand 7 states. [2020-10-22 02:16:01,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 02:16:01,296 INFO L93 Difference]: Finished difference Result 189 states and 428 transitions. [2020-10-22 02:16:01,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-22 02:16:01,296 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-10-22 02:16:01,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 02:16:01,298 INFO L225 Difference]: With dead ends: 189 [2020-10-22 02:16:01,298 INFO L226 Difference]: Without dead ends: 150 [2020-10-22 02:16:01,298 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-10-22 02:16:01,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2020-10-22 02:16:01,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 150. [2020-10-22 02:16:01,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2020-10-22 02:16:01,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 339 transitions. [2020-10-22 02:16:01,304 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 339 transitions. Word has length 16 [2020-10-22 02:16:01,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 02:16:01,304 INFO L481 AbstractCegarLoop]: Abstraction has 150 states and 339 transitions. [2020-10-22 02:16:01,304 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-22 02:16:01,304 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 339 transitions. [2020-10-22 02:16:01,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-22 02:16:01,305 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 02:16:01,305 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 02:16:01,305 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-22 02:16:01,306 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 02:16:01,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 02:16:01,306 INFO L82 PathProgramCache]: Analyzing trace with hash 1569359463, now seen corresponding path program 1 times [2020-10-22 02:16:01,308 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 02:16:01,308 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768852843] [2020-10-22 02:16:01,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 02:16:01,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 02:16:01,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 02:16:01,342 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768852843] [2020-10-22 02:16:01,343 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 02:16:01,343 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-22 02:16:01,343 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [996203360] [2020-10-22 02:16:01,343 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 02:16:01,345 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 02:16:01,351 INFO L252 McrAutomatonBuilder]: Finished intersection with 34 states and 48 transitions. [2020-10-22 02:16:01,351 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 02:16:01,404 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 02:16:01,404 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-22 02:16:01,404 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 02:16:01,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-22 02:16:01,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-22 02:16:01,405 INFO L87 Difference]: Start difference. First operand 150 states and 339 transitions. Second operand 4 states. [2020-10-22 02:16:01,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 02:16:01,422 INFO L93 Difference]: Finished difference Result 182 states and 403 transitions. [2020-10-22 02:16:01,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-22 02:16:01,423 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-10-22 02:16:01,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 02:16:01,424 INFO L225 Difference]: With dead ends: 182 [2020-10-22 02:16:01,424 INFO L226 Difference]: Without dead ends: 139 [2020-10-22 02:16:01,424 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-22 02:16:01,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2020-10-22 02:16:01,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 137. [2020-10-22 02:16:01,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2020-10-22 02:16:01,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 301 transitions. [2020-10-22 02:16:01,429 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 301 transitions. Word has length 18 [2020-10-22 02:16:01,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 02:16:01,429 INFO L481 AbstractCegarLoop]: Abstraction has 137 states and 301 transitions. [2020-10-22 02:16:01,429 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-22 02:16:01,430 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 301 transitions. [2020-10-22 02:16:01,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-22 02:16:01,430 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 02:16:01,430 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 02:16:01,431 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-22 02:16:01,431 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 02:16:01,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 02:16:01,431 INFO L82 PathProgramCache]: Analyzing trace with hash 1563997083, now seen corresponding path program 2 times [2020-10-22 02:16:01,432 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 02:16:01,433 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257969912] [2020-10-22 02:16:01,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 02:16:01,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 02:16:01,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 02:16:01,490 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257969912] [2020-10-22 02:16:01,490 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 02:16:01,490 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-22 02:16:01,491 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1712088571] [2020-10-22 02:16:01,491 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 02:16:01,493 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 02:16:01,499 INFO L252 McrAutomatonBuilder]: Finished intersection with 43 states and 66 transitions. [2020-10-22 02:16:01,499 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 02:16:01,611 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [13346#(<= ~__unbuffered_cnt~0 0)] [2020-10-22 02:16:01,612 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-22 02:16:01,612 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 02:16:01,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-22 02:16:01,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-22 02:16:01,613 INFO L87 Difference]: Start difference. First operand 137 states and 301 transitions. Second operand 8 states. [2020-10-22 02:16:01,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 02:16:01,679 INFO L93 Difference]: Finished difference Result 132 states and 289 transitions. [2020-10-22 02:16:01,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-22 02:16:01,679 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 18 [2020-10-22 02:16:01,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 02:16:01,680 INFO L225 Difference]: With dead ends: 132 [2020-10-22 02:16:01,680 INFO L226 Difference]: Without dead ends: 51 [2020-10-22 02:16:01,681 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-22 02:16:01,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-10-22 02:16:01,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2020-10-22 02:16:01,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-10-22 02:16:01,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 97 transitions. [2020-10-22 02:16:01,683 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 97 transitions. Word has length 18 [2020-10-22 02:16:01,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 02:16:01,684 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 97 transitions. [2020-10-22 02:16:01,684 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-22 02:16:01,684 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 97 transitions. [2020-10-22 02:16:01,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-22 02:16:01,684 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 02:16:01,685 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 02:16:01,685 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-22 02:16:01,685 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 02:16:01,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 02:16:01,685 INFO L82 PathProgramCache]: Analyzing trace with hash -299924038, now seen corresponding path program 1 times [2020-10-22 02:16:01,688 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 02:16:01,689 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470669518] [2020-10-22 02:16:01,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 02:16:01,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 02:16:01,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 02:16:01,714 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470669518] [2020-10-22 02:16:01,714 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 02:16:01,714 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-22 02:16:01,714 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1837190732] [2020-10-22 02:16:01,714 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 02:16:01,716 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 02:16:01,725 INFO L252 McrAutomatonBuilder]: Finished intersection with 52 states and 80 transitions. [2020-10-22 02:16:01,725 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 02:16:01,746 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 02:16:01,746 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-22 02:16:01,746 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 02:16:01,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-22 02:16:01,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-22 02:16:01,747 INFO L87 Difference]: Start difference. First operand 51 states and 97 transitions. Second operand 3 states. [2020-10-22 02:16:01,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 02:16:01,753 INFO L93 Difference]: Finished difference Result 50 states and 96 transitions. [2020-10-22 02:16:01,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-22 02:16:01,754 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2020-10-22 02:16:01,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 02:16:01,754 INFO L225 Difference]: With dead ends: 50 [2020-10-22 02:16:01,754 INFO L226 Difference]: Without dead ends: 0 [2020-10-22 02:16:01,755 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-22 02:16:01,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-22 02:16:01,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-22 02:16:01,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-22 02:16:01,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-22 02:16:01,755 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 20 [2020-10-22 02:16:01,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 02:16:01,756 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-22 02:16:01,756 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-22 02:16:01,756 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-22 02:16:01,756 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-22 02:16:01,756 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-22 02:16:01,760 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 02:16:01 BasicIcfg [2020-10-22 02:16:01,760 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-22 02:16:01,761 INFO L168 Benchmark]: Toolchain (without parser) took 7703.09 ms. Allocated memory was 147.8 MB in the beginning and 315.1 MB in the end (delta: 167.2 MB). Free memory was 102.2 MB in the beginning and 241.2 MB in the end (delta: -139.0 MB). Peak memory consumption was 28.3 MB. Max. memory is 7.1 GB. [2020-10-22 02:16:01,762 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 147.8 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-10-22 02:16:01,763 INFO L168 Benchmark]: CACSL2BoogieTranslator took 875.91 ms. Allocated memory was 147.8 MB in the beginning and 204.5 MB in the end (delta: 56.6 MB). Free memory was 101.2 MB in the beginning and 157.8 MB in the end (delta: -56.6 MB). Peak memory consumption was 19.9 MB. Max. memory is 7.1 GB. [2020-10-22 02:16:01,764 INFO L168 Benchmark]: Boogie Procedure Inliner took 54.73 ms. Allocated memory is still 204.5 MB. Free memory was 157.8 MB in the beginning and 155.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-10-22 02:16:01,764 INFO L168 Benchmark]: Boogie Preprocessor took 31.70 ms. Allocated memory is still 204.5 MB. Free memory was 155.8 MB in the beginning and 153.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-10-22 02:16:01,765 INFO L168 Benchmark]: RCFGBuilder took 471.61 ms. Allocated memory is still 204.5 MB. Free memory was 153.8 MB in the beginning and 128.4 MB in the end (delta: 25.4 MB). Peak memory consumption was 25.4 MB. Max. memory is 7.1 GB. [2020-10-22 02:16:01,766 INFO L168 Benchmark]: TraceAbstraction took 6258.33 ms. Allocated memory was 204.5 MB in the beginning and 315.1 MB in the end (delta: 110.6 MB). Free memory was 127.7 MB in the beginning and 241.2 MB in the end (delta: -113.4 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-10-22 02:16:01,769 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 147.8 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 875.91 ms. Allocated memory was 147.8 MB in the beginning and 204.5 MB in the end (delta: 56.6 MB). Free memory was 101.2 MB in the beginning and 157.8 MB in the end (delta: -56.6 MB). Peak memory consumption was 19.9 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 54.73 ms. Allocated memory is still 204.5 MB. Free memory was 157.8 MB in the beginning and 155.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 31.70 ms. Allocated memory is still 204.5 MB. Free memory was 155.8 MB in the beginning and 153.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 471.61 ms. Allocated memory is still 204.5 MB. Free memory was 153.8 MB in the beginning and 128.4 MB in the end (delta: 25.4 MB). Peak memory consumption was 25.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 6258.33 ms. Allocated memory was 204.5 MB in the beginning and 315.1 MB in the end (delta: 110.6 MB). Free memory was 127.7 MB in the beginning and 241.2 MB in the end (delta: -113.4 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 1132 VarBasedMoverChecksPositive, 41 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 64 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 2.1s, 99 PlacesBefore, 38 PlacesAfterwards, 89 TransitionsBefore, 26 TransitionsAfterwards, 2042 CoEnabledTransitionPairs, 7 FixpointIterations, 17 TrivialSequentialCompositions, 49 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 14 ConcurrentYvCompositions, 2 ChoiceCompositions, 82 TotalNumberOfCompositions, 4334 MoverChecksTotal - PositiveResult [Line: 17]: 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 5 procedures, 87 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 6.0s, OverallIterations: 12, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.2s, HoareTripleCheckerStatistics: 259 SDtfs, 194 SDslu, 311 SDs, 0 SdLazy, 163 SolverSat, 51 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 181 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=706occurred 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: 0.2s AutomataMinimizationTime, 12 MinimizatonAttempts, 34 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 172 NumberOfCodeBlocks, 172 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 160 ConstructedInterpolants, 0 QuantifiedInterpolants, 6080 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 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...