/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-WP.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe032_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-1d1d2b5 [2020-10-22 00:42:16,737 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-22 00:42:16,739 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-22 00:42:16,768 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-22 00:42:16,768 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-22 00:42:16,769 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-22 00:42:16,770 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-22 00:42:16,772 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-22 00:42:16,774 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-22 00:42:16,775 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-22 00:42:16,776 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-22 00:42:16,777 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-22 00:42:16,777 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-22 00:42:16,778 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-22 00:42:16,779 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-22 00:42:16,780 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-22 00:42:16,781 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-22 00:42:16,782 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-22 00:42:16,784 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-22 00:42:16,786 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-22 00:42:16,787 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-22 00:42:16,788 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-22 00:42:16,789 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-22 00:42:16,790 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-22 00:42:16,793 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-22 00:42:16,796 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-22 00:42:16,797 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-22 00:42:16,797 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-22 00:42:16,798 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-22 00:42:16,799 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-22 00:42:16,799 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-22 00:42:16,800 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-22 00:42:16,800 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-22 00:42:16,800 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-22 00:42:16,801 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-22 00:42:16,802 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-22 00:42:16,803 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-WP.epf [2020-10-22 00:42:16,826 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-22 00:42:16,826 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-22 00:42:16,828 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-22 00:42:16,828 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-22 00:42:16,828 INFO L138 SettingsManager]: * Use SBE=true [2020-10-22 00:42:16,828 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-22 00:42:16,828 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-22 00:42:16,829 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-22 00:42:16,829 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-22 00:42:16,829 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-22 00:42:16,829 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-22 00:42:16,829 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-22 00:42:16,830 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-22 00:42:16,830 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-22 00:42:16,830 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-22 00:42:16,830 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-22 00:42:16,830 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-22 00:42:16,831 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-22 00:42:16,831 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-22 00:42:16,831 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-22 00:42:16,831 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-22 00:42:16,831 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-22 00:42:16,832 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-22 00:42:16,832 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-10-22 00:42:16,832 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-22 00:42:16,832 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-22 00:42:16,833 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-22 00:42:16,833 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-10-22 00:42:16,833 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-10-22 00:42:16,833 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-22 00:42:16,833 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2020-10-22 00:42:17,199 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-22 00:42:17,219 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-22 00:42:17,223 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-22 00:42:17,225 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-22 00:42:17,226 INFO L275 PluginConnector]: CDTParser initialized [2020-10-22 00:42:17,227 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe032_tso.oepc.i [2020-10-22 00:42:17,303 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8622627ef/92626b754a764b4dab7b9a84465fbdd2/FLAG8d733049b [2020-10-22 00:42:17,888 INFO L306 CDTParser]: Found 1 translation units. [2020-10-22 00:42:17,889 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe032_tso.oepc.i [2020-10-22 00:42:17,913 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8622627ef/92626b754a764b4dab7b9a84465fbdd2/FLAG8d733049b [2020-10-22 00:42:18,107 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8622627ef/92626b754a764b4dab7b9a84465fbdd2 [2020-10-22 00:42:18,119 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-22 00:42:18,126 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-22 00:42:18,127 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-22 00:42:18,127 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-22 00:42:18,131 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-22 00:42:18,132 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 12:42:18" (1/1) ... [2020-10-22 00:42:18,135 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5701346a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 12:42:18, skipping insertion in model container [2020-10-22 00:42:18,135 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 12:42:18" (1/1) ... [2020-10-22 00:42:18,143 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-22 00:42:18,202 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-22 00:42:18,745 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-22 00:42:18,754 INFO L203 MainTranslator]: Completed pre-run [2020-10-22 00:42:18,799 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-22 00:42:18,872 INFO L208 MainTranslator]: Completed translation [2020-10-22 00:42:18,872 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 12:42:18 WrapperNode [2020-10-22 00:42:18,872 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-22 00:42:18,873 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-22 00:42:18,873 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-22 00:42:18,874 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-22 00:42:18,883 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 12:42:18" (1/1) ... [2020-10-22 00:42:18,899 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 12:42:18" (1/1) ... [2020-10-22 00:42:18,922 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-22 00:42:18,922 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-22 00:42:18,923 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-22 00:42:18,923 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-22 00:42:18,932 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 12:42:18" (1/1) ... [2020-10-22 00:42:18,932 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 12:42:18" (1/1) ... [2020-10-22 00:42:18,935 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 12:42:18" (1/1) ... [2020-10-22 00:42:18,935 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 12:42:18" (1/1) ... [2020-10-22 00:42:18,942 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 12:42:18" (1/1) ... [2020-10-22 00:42:18,945 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 12:42:18" (1/1) ... [2020-10-22 00:42:18,947 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 12:42:18" (1/1) ... [2020-10-22 00:42:18,950 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-22 00:42:18,951 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-22 00:42:18,951 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-22 00:42:18,951 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-22 00:42:18,952 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 12:42:18" (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 00:42:19,036 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-22 00:42:19,036 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-22 00:42:19,036 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-22 00:42:19,037 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-22 00:42:19,037 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-22 00:42:19,037 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-22 00:42:19,038 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-22 00:42:19,038 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-22 00:42:19,039 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-22 00:42:19,039 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-22 00:42:19,039 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-22 00:42:19,040 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-22 00:42:19,040 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-22 00:42:19,040 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-22 00:42:19,042 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 00:42:19,457 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-22 00:42:19,458 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-10-22 00:42:19,460 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 12:42:19 BoogieIcfgContainer [2020-10-22 00:42:19,461 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-22 00:42:19,462 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-22 00:42:19,462 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-22 00:42:19,466 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-22 00:42:19,466 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 12:42:18" (1/3) ... [2020-10-22 00:42:19,467 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a38cc06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 12:42:19, skipping insertion in model container [2020-10-22 00:42:19,468 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 12:42:18" (2/3) ... [2020-10-22 00:42:19,468 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a38cc06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 12:42:19, skipping insertion in model container [2020-10-22 00:42:19,468 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 12:42:19" (3/3) ... [2020-10-22 00:42:19,474 INFO L111 eAbstractionObserver]: Analyzing ICFG safe032_tso.oepc.i [2020-10-22 00:42:19,486 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-22 00:42:19,486 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-22 00:42:19,500 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-22 00:42:19,501 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-22 00:42:19,535 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:42:19,536 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:42:19,536 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:42:19,536 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:42:19,537 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:42:19,537 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:42:19,538 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:42:19,538 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:42:19,538 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:42:19,538 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:42:19,539 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:42:19,539 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:42:19,539 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:42:19,540 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:42:19,540 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:42:19,540 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:42:19,541 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:42:19,541 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:42:19,545 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:42:19,545 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:42:19,545 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:42:19,546 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:42:19,552 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:42:19,552 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:42:19,553 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:42:19,553 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:42:19,556 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:42:19,556 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:42:19,556 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:42:19,556 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:42:19,558 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-22 00:42:19,573 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-22 00:42:19,591 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-22 00:42:19,592 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-22 00:42:19,592 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-22 00:42:19,592 INFO L380 AbstractCegarLoop]: Backedges is MCR [2020-10-22 00:42:19,592 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-22 00:42:19,592 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-22 00:42:19,592 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-22 00:42:19,593 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-22 00:42:19,605 INFO L137 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-10-22 00:42:19,606 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 85 places, 78 transitions, 171 flow [2020-10-22 00:42:19,608 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 85 places, 78 transitions, 171 flow [2020-10-22 00:42:19,610 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 85 places, 78 transitions, 171 flow [2020-10-22 00:42:19,657 INFO L129 PetriNetUnfolder]: 3/75 cut-off events. [2020-10-22 00:42:19,658 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-22 00:42:19,663 INFO L80 FinitePrefix]: Finished finitePrefix Result has 85 conditions, 75 events. 3/75 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 62 event pairs, 0 based on Foata normal form. 0/71 useless extension candidates. Maximal degree in co-relation 60. Up to 2 conditions per place. [2020-10-22 00:42:19,666 INFO L116 LiptonReduction]: Number of co-enabled transitions 1440 [2020-10-22 00:42:21,315 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 74 [2020-10-22 00:42:21,637 INFO L131 LiptonReduction]: Checked pairs total: 2833 [2020-10-22 00:42:21,639 INFO L133 LiptonReduction]: Total number of compositions: 71 [2020-10-22 00:42:21,647 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 21 transitions, 57 flow [2020-10-22 00:42:21,685 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-10-22 00:42:21,687 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-10-22 00:42:21,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-22 00:42:21,697 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 00:42:21,698 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 00:42:21,699 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 00:42:21,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 00:42:21,705 INFO L82 PathProgramCache]: Analyzing trace with hash -618309236, now seen corresponding path program 1 times [2020-10-22 00:42:21,730 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 00:42:21,730 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591953334] [2020-10-22 00:42:21,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 00:42:21,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 00:42:21,978 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 00:42:21,979 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591953334] [2020-10-22 00:42:21,980 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 00:42:21,980 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-22 00:42:21,981 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [570126298] [2020-10-22 00:42:21,982 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 00:42:21,985 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 00:42:22,000 INFO L252 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-10-22 00:42:22,000 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 00:42:22,005 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 00:42:22,005 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-22 00:42:22,006 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 00:42:22,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-22 00:42:22,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-22 00:42:22,024 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-10-22 00:42:22,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 00:42:22,067 INFO L93 Difference]: Finished difference Result 294 states and 849 transitions. [2020-10-22 00:42:22,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-22 00:42:22,069 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-10-22 00:42:22,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 00:42:22,087 INFO L225 Difference]: With dead ends: 294 [2020-10-22 00:42:22,087 INFO L226 Difference]: Without dead ends: 230 [2020-10-22 00:42:22,089 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 00:42:22,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2020-10-22 00:42:22,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 230. [2020-10-22 00:42:22,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 230 states. [2020-10-22 00:42:22,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 641 transitions. [2020-10-22 00:42:22,159 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 641 transitions. Word has length 8 [2020-10-22 00:42:22,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 00:42:22,160 INFO L481 AbstractCegarLoop]: Abstraction has 230 states and 641 transitions. [2020-10-22 00:42:22,160 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-22 00:42:22,160 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 641 transitions. [2020-10-22 00:42:22,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-22 00:42:22,162 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 00:42:22,162 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 00:42:22,162 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-22 00:42:22,162 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 00:42:22,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 00:42:22,163 INFO L82 PathProgramCache]: Analyzing trace with hash -2017712009, now seen corresponding path program 1 times [2020-10-22 00:42:22,165 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 00:42:22,165 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686477101] [2020-10-22 00:42:22,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 00:42:22,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 00:42:22,235 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 00:42:22,236 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686477101] [2020-10-22 00:42:22,236 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 00:42:22,236 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-22 00:42:22,236 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [968881447] [2020-10-22 00:42:22,237 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 00:42:22,237 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 00:42:22,240 INFO L252 McrAutomatonBuilder]: Finished intersection with 13 states and 15 transitions. [2020-10-22 00:42:22,240 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 00:42:22,262 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 00:42:22,264 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-22 00:42:22,264 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 00:42:22,265 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-22 00:42:22,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-22 00:42:22,265 INFO L87 Difference]: Start difference. First operand 230 states and 641 transitions. Second operand 3 states. [2020-10-22 00:42:22,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 00:42:22,287 INFO L93 Difference]: Finished difference Result 326 states and 861 transitions. [2020-10-22 00:42:22,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-22 00:42:22,287 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-10-22 00:42:22,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 00:42:22,290 INFO L225 Difference]: With dead ends: 326 [2020-10-22 00:42:22,290 INFO L226 Difference]: Without dead ends: 254 [2020-10-22 00:42:22,291 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 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 00:42:22,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2020-10-22 00:42:22,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 218. [2020-10-22 00:42:22,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-10-22 00:42:22,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 576 transitions. [2020-10-22 00:42:22,323 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 576 transitions. Word has length 9 [2020-10-22 00:42:22,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 00:42:22,323 INFO L481 AbstractCegarLoop]: Abstraction has 218 states and 576 transitions. [2020-10-22 00:42:22,324 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-22 00:42:22,324 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 576 transitions. [2020-10-22 00:42:22,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-22 00:42:22,326 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 00:42:22,326 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 00:42:22,328 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-22 00:42:22,328 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 00:42:22,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 00:42:22,329 INFO L82 PathProgramCache]: Analyzing trace with hash -1987739380, now seen corresponding path program 1 times [2020-10-22 00:42:22,330 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 00:42:22,330 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254124463] [2020-10-22 00:42:22,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 00:42:22,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 00:42:22,399 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 00:42:22,399 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254124463] [2020-10-22 00:42:22,400 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 00:42:22,400 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-22 00:42:22,400 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [276441822] [2020-10-22 00:42:22,400 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 00:42:22,401 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 00:42:22,403 INFO L252 McrAutomatonBuilder]: Finished intersection with 11 states and 11 transitions. [2020-10-22 00:42:22,403 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 00:42:22,417 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 00:42:22,418 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-22 00:42:22,418 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 00:42:22,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-22 00:42:22,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-22 00:42:22,419 INFO L87 Difference]: Start difference. First operand 218 states and 576 transitions. Second operand 3 states. [2020-10-22 00:42:22,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 00:42:22,428 INFO L93 Difference]: Finished difference Result 214 states and 561 transitions. [2020-10-22 00:42:22,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-22 00:42:22,431 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-10-22 00:42:22,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 00:42:22,433 INFO L225 Difference]: With dead ends: 214 [2020-10-22 00:42:22,433 INFO L226 Difference]: Without dead ends: 214 [2020-10-22 00:42:22,434 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 00:42:22,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2020-10-22 00:42:22,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 214. [2020-10-22 00:42:22,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214 states. [2020-10-22 00:42:22,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 561 transitions. [2020-10-22 00:42:22,457 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 561 transitions. Word has length 9 [2020-10-22 00:42:22,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 00:42:22,461 INFO L481 AbstractCegarLoop]: Abstraction has 214 states and 561 transitions. [2020-10-22 00:42:22,461 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-22 00:42:22,461 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 561 transitions. [2020-10-22 00:42:22,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-22 00:42:22,463 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 00:42:22,463 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 00:42:22,463 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-22 00:42:22,463 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 00:42:22,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 00:42:22,464 INFO L82 PathProgramCache]: Analyzing trace with hash -380513842, now seen corresponding path program 1 times [2020-10-22 00:42:22,477 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 00:42:22,478 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389206873] [2020-10-22 00:42:22,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 00:42:22,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 00:42:22,562 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 00:42:22,563 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389206873] [2020-10-22 00:42:22,564 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 00:42:22,564 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-22 00:42:22,564 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2031027933] [2020-10-22 00:42:22,564 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 00:42:22,566 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 00:42:22,568 INFO L252 McrAutomatonBuilder]: Finished intersection with 19 states and 27 transitions. [2020-10-22 00:42:22,568 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 00:42:22,682 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 00:42:22,683 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-22 00:42:22,683 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 00:42:22,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-22 00:42:22,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-22 00:42:22,684 INFO L87 Difference]: Start difference. First operand 214 states and 561 transitions. Second operand 3 states. [2020-10-22 00:42:22,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 00:42:22,693 INFO L93 Difference]: Finished difference Result 192 states and 487 transitions. [2020-10-22 00:42:22,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-22 00:42:22,694 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-10-22 00:42:22,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 00:42:22,696 INFO L225 Difference]: With dead ends: 192 [2020-10-22 00:42:22,696 INFO L226 Difference]: Without dead ends: 168 [2020-10-22 00:42:22,697 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 00:42:22,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2020-10-22 00:42:22,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 168. [2020-10-22 00:42:22,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168 states. [2020-10-22 00:42:22,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 433 transitions. [2020-10-22 00:42:22,704 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 433 transitions. Word has length 10 [2020-10-22 00:42:22,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 00:42:22,705 INFO L481 AbstractCegarLoop]: Abstraction has 168 states and 433 transitions. [2020-10-22 00:42:22,705 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-22 00:42:22,705 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 433 transitions. [2020-10-22 00:42:22,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-22 00:42:22,707 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 00:42:22,707 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 00:42:22,707 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-22 00:42:22,708 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 00:42:22,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 00:42:22,708 INFO L82 PathProgramCache]: Analyzing trace with hash 658800567, now seen corresponding path program 1 times [2020-10-22 00:42:22,710 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 00:42:22,710 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928445076] [2020-10-22 00:42:22,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 00:42:22,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 00:42:22,750 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 00:42:22,751 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928445076] [2020-10-22 00:42:22,751 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 00:42:22,751 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-22 00:42:22,752 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1795107163] [2020-10-22 00:42:22,752 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 00:42:22,753 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 00:42:22,757 INFO L252 McrAutomatonBuilder]: Finished intersection with 35 states and 61 transitions. [2020-10-22 00:42:22,758 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 00:42:22,830 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 00:42:22,831 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-22 00:42:22,831 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 00:42:22,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-22 00:42:22,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-22 00:42:22,832 INFO L87 Difference]: Start difference. First operand 168 states and 433 transitions. Second operand 4 states. [2020-10-22 00:42:22,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 00:42:22,856 INFO L93 Difference]: Finished difference Result 216 states and 549 transitions. [2020-10-22 00:42:22,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-22 00:42:22,856 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-10-22 00:42:22,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 00:42:22,857 INFO L225 Difference]: With dead ends: 216 [2020-10-22 00:42:22,858 INFO L226 Difference]: Without dead ends: 144 [2020-10-22 00:42:22,858 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 20 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 00:42:22,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-10-22 00:42:22,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2020-10-22 00:42:22,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-10-22 00:42:22,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 355 transitions. [2020-10-22 00:42:22,864 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 355 transitions. Word has length 12 [2020-10-22 00:42:22,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 00:42:22,864 INFO L481 AbstractCegarLoop]: Abstraction has 144 states and 355 transitions. [2020-10-22 00:42:22,864 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-22 00:42:22,864 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 355 transitions. [2020-10-22 00:42:22,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-22 00:42:22,866 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 00:42:22,866 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 00:42:22,866 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-22 00:42:22,866 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 00:42:22,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 00:42:22,866 INFO L82 PathProgramCache]: Analyzing trace with hash 659418087, now seen corresponding path program 2 times [2020-10-22 00:42:22,868 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 00:42:22,868 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730742841] [2020-10-22 00:42:22,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 00:42:22,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 00:42:22,919 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 00:42:22,920 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730742841] [2020-10-22 00:42:22,920 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 00:42:22,920 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-22 00:42:22,920 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [192083438] [2020-10-22 00:42:22,921 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 00:42:22,922 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 00:42:22,926 INFO L252 McrAutomatonBuilder]: Finished intersection with 39 states and 71 transitions. [2020-10-22 00:42:22,927 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 00:42:22,945 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-22 00:42:22,946 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-22 00:42:22,962 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-22 00:42:22,963 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-22 00:42:23,009 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-22 00:42:23,009 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-22 00:42:23,246 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [3897#(not (= 3 ~__unbuffered_cnt~0))] [2020-10-22 00:42:23,246 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-22 00:42:23,246 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 00:42:23,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-22 00:42:23,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-22 00:42:23,248 INFO L87 Difference]: Start difference. First operand 144 states and 355 transitions. Second operand 5 states. [2020-10-22 00:42:23,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 00:42:23,304 INFO L93 Difference]: Finished difference Result 137 states and 312 transitions. [2020-10-22 00:42:23,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-22 00:42:23,305 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-10-22 00:42:23,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 00:42:23,306 INFO L225 Difference]: With dead ends: 137 [2020-10-22 00:42:23,307 INFO L226 Difference]: Without dead ends: 97 [2020-10-22 00:42:23,307 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 21 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 00:42:23,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-10-22 00:42:23,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2020-10-22 00:42:23,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-10-22 00:42:23,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 202 transitions. [2020-10-22 00:42:23,313 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 202 transitions. Word has length 12 [2020-10-22 00:42:23,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 00:42:23,313 INFO L481 AbstractCegarLoop]: Abstraction has 97 states and 202 transitions. [2020-10-22 00:42:23,314 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-22 00:42:23,314 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 202 transitions. [2020-10-22 00:42:23,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-22 00:42:23,319 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 00:42:23,319 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 00:42:23,319 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-22 00:42:23,319 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 00:42:23,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 00:42:23,320 INFO L82 PathProgramCache]: Analyzing trace with hash 1390045438, now seen corresponding path program 1 times [2020-10-22 00:42:23,321 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 00:42:23,322 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825072139] [2020-10-22 00:42:23,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 00:42:23,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 00:42:23,364 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 00:42:23,365 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825072139] [2020-10-22 00:42:23,365 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 00:42:23,365 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-22 00:42:23,365 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [102252927] [2020-10-22 00:42:23,366 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 00:42:23,367 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 00:42:23,370 INFO L252 McrAutomatonBuilder]: Finished intersection with 25 states and 32 transitions. [2020-10-22 00:42:23,370 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 00:42:23,384 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 00:42:23,385 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-22 00:42:23,385 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 00:42:23,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-22 00:42:23,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-22 00:42:23,386 INFO L87 Difference]: Start difference. First operand 97 states and 202 transitions. Second operand 3 states. [2020-10-22 00:42:23,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 00:42:23,394 INFO L93 Difference]: Finished difference Result 115 states and 230 transitions. [2020-10-22 00:42:23,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-22 00:42:23,395 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2020-10-22 00:42:23,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 00:42:23,396 INFO L225 Difference]: With dead ends: 115 [2020-10-22 00:42:23,396 INFO L226 Difference]: Without dead ends: 98 [2020-10-22 00:42:23,397 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 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 00:42:23,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-10-22 00:42:23,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 96. [2020-10-22 00:42:23,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-10-22 00:42:23,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 193 transitions. [2020-10-22 00:42:23,400 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 193 transitions. Word has length 14 [2020-10-22 00:42:23,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 00:42:23,401 INFO L481 AbstractCegarLoop]: Abstraction has 96 states and 193 transitions. [2020-10-22 00:42:23,401 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-22 00:42:23,401 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 193 transitions. [2020-10-22 00:42:23,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-22 00:42:23,402 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 00:42:23,402 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 00:42:23,402 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-22 00:42:23,402 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 00:42:23,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 00:42:23,403 INFO L82 PathProgramCache]: Analyzing trace with hash 836357957, now seen corresponding path program 1 times [2020-10-22 00:42:23,404 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 00:42:23,404 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32562516] [2020-10-22 00:42:23,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 00:42:23,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 00:42:23,455 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 00:42:23,455 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32562516] [2020-10-22 00:42:23,456 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 00:42:23,456 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-22 00:42:23,456 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [803453304] [2020-10-22 00:42:23,456 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 00:42:23,458 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 00:42:23,463 INFO L252 McrAutomatonBuilder]: Finished intersection with 36 states and 54 transitions. [2020-10-22 00:42:23,464 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 00:42:23,673 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 00:42:23,673 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-22 00:42:23,674 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 00:42:23,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-22 00:42:23,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-22 00:42:23,674 INFO L87 Difference]: Start difference. First operand 96 states and 193 transitions. Second operand 6 states. [2020-10-22 00:42:23,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 00:42:23,723 INFO L93 Difference]: Finished difference Result 92 states and 183 transitions. [2020-10-22 00:42:23,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-22 00:42:23,723 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-10-22 00:42:23,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 00:42:23,724 INFO L225 Difference]: With dead ends: 92 [2020-10-22 00:42:23,724 INFO L226 Difference]: Without dead ends: 36 [2020-10-22 00:42:23,724 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-22 00:42:23,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-22 00:42:23,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-10-22 00:42:23,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-10-22 00:42:23,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 56 transitions. [2020-10-22 00:42:23,726 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 56 transitions. Word has length 15 [2020-10-22 00:42:23,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 00:42:23,727 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 56 transitions. [2020-10-22 00:42:23,727 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-22 00:42:23,727 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 56 transitions. [2020-10-22 00:42:23,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-22 00:42:23,728 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 00:42:23,728 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 00:42:23,728 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-22 00:42:23,728 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 00:42:23,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 00:42:23,728 INFO L82 PathProgramCache]: Analyzing trace with hash -1235317196, now seen corresponding path program 1 times [2020-10-22 00:42:23,730 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 00:42:23,730 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907447750] [2020-10-22 00:42:23,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 00:42:23,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 00:42:23,761 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 00:42:23,762 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907447750] [2020-10-22 00:42:23,762 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 00:42:23,762 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-22 00:42:23,762 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [786912873] [2020-10-22 00:42:23,763 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 00:42:23,765 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 00:42:23,773 INFO L252 McrAutomatonBuilder]: Finished intersection with 54 states and 89 transitions. [2020-10-22 00:42:23,773 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 00:42:23,822 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 00:42:23,823 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-22 00:42:23,823 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 00:42:23,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-22 00:42:23,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-22 00:42:23,824 INFO L87 Difference]: Start difference. First operand 36 states and 56 transitions. Second operand 4 states. [2020-10-22 00:42:23,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 00:42:23,836 INFO L93 Difference]: Finished difference Result 35 states and 55 transitions. [2020-10-22 00:42:23,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-22 00:42:23,837 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-10-22 00:42:23,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 00:42:23,837 INFO L225 Difference]: With dead ends: 35 [2020-10-22 00:42:23,837 INFO L226 Difference]: Without dead ends: 0 [2020-10-22 00:42:23,838 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 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 00:42:23,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-22 00:42:23,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-22 00:42:23,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-22 00:42:23,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-22 00:42:23,839 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-10-22 00:42:23,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 00:42:23,839 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-22 00:42:23,839 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-22 00:42:23,839 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-22 00:42:23,839 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-22 00:42:23,840 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-22 00:42:23,843 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 12:42:23 BasicIcfg [2020-10-22 00:42:23,843 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-22 00:42:23,845 INFO L168 Benchmark]: Toolchain (without parser) took 5724.77 ms. Allocated memory was 148.9 MB in the beginning and 274.2 MB in the end (delta: 125.3 MB). Free memory was 103.7 MB in the beginning and 123.5 MB in the end (delta: -19.8 MB). Peak memory consumption was 105.5 MB. Max. memory is 7.1 GB. [2020-10-22 00:42:23,846 INFO L168 Benchmark]: CDTParser took 2.38 ms. Allocated memory is still 148.9 MB. Free memory was 123.6 MB in the beginning and 123.3 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-10-22 00:42:23,847 INFO L168 Benchmark]: CACSL2BoogieTranslator took 745.77 ms. Allocated memory was 148.9 MB in the beginning and 202.9 MB in the end (delta: 54.0 MB). Free memory was 102.8 MB in the beginning and 156.9 MB in the end (delta: -54.0 MB). Peak memory consumption was 20.1 MB. Max. memory is 7.1 GB. [2020-10-22 00:42:23,848 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.94 ms. Allocated memory is still 202.9 MB. Free memory was 156.9 MB in the beginning and 154.9 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2020-10-22 00:42:23,848 INFO L168 Benchmark]: Boogie Preprocessor took 27.68 ms. Allocated memory is still 202.9 MB. Free memory was 154.9 MB in the beginning and 152.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-10-22 00:42:23,849 INFO L168 Benchmark]: RCFGBuilder took 510.28 ms. Allocated memory is still 202.9 MB. Free memory was 152.9 MB in the beginning and 129.1 MB in the end (delta: 23.8 MB). Peak memory consumption was 23.8 MB. Max. memory is 7.1 GB. [2020-10-22 00:42:23,850 INFO L168 Benchmark]: TraceAbstraction took 4381.22 ms. Allocated memory was 202.9 MB in the beginning and 274.2 MB in the end (delta: 71.3 MB). Free memory was 128.5 MB in the beginning and 123.5 MB in the end (delta: 4.9 MB). Peak memory consumption was 76.3 MB. Max. memory is 7.1 GB. [2020-10-22 00:42:23,854 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 2.38 ms. Allocated memory is still 148.9 MB. Free memory was 123.6 MB in the beginning and 123.3 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 745.77 ms. Allocated memory was 148.9 MB in the beginning and 202.9 MB in the end (delta: 54.0 MB). Free memory was 102.8 MB in the beginning and 156.9 MB in the end (delta: -54.0 MB). Peak memory consumption was 20.1 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 48.94 ms. Allocated memory is still 202.9 MB. Free memory was 156.9 MB in the beginning and 154.9 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 27.68 ms. Allocated memory is still 202.9 MB. Free memory was 154.9 MB in the beginning and 152.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 510.28 ms. Allocated memory is still 202.9 MB. Free memory was 152.9 MB in the beginning and 129.1 MB in the end (delta: 23.8 MB). Peak memory consumption was 23.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4381.22 ms. Allocated memory was 202.9 MB in the beginning and 274.2 MB in the end (delta: 71.3 MB). Free memory was 128.5 MB in the beginning and 123.5 MB in the end (delta: 4.9 MB). Peak memory consumption was 76.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 771 VarBasedMoverChecksPositive, 34 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 48 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 2.0s, 85 PlacesBefore, 31 PlacesAfterwards, 78 TransitionsBefore, 21 TransitionsAfterwards, 1440 CoEnabledTransitionPairs, 6 FixpointIterations, 17 TrivialSequentialCompositions, 39 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 12 ConcurrentYvCompositions, 3 ChoiceCompositions, 71 TotalNumberOfCompositions, 2833 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 4 procedures, 76 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.2s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.0s, HoareTripleCheckerStatistics: 165 SDtfs, 111 SDslu, 143 SDs, 0 SdLazy, 74 SolverSat, 30 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 119 GetRequests, 95 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=298occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 38 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 106 NumberOfCodeBlocks, 106 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 97 ConstructedInterpolants, 0 QuantifiedInterpolants, 2607 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 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...