/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/safe025_pso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b09bf87 [2020-10-16 13:44:35,872 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-16 13:44:35,876 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-16 13:44:35,917 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-16 13:44:35,917 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-16 13:44:35,929 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-16 13:44:35,930 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-16 13:44:35,933 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-16 13:44:35,936 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-16 13:44:35,940 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-16 13:44:35,941 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-16 13:44:35,943 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-16 13:44:35,943 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-16 13:44:35,946 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-16 13:44:35,950 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-16 13:44:35,951 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-16 13:44:35,951 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-16 13:44:35,952 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-16 13:44:35,953 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-16 13:44:35,955 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-16 13:44:35,956 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-16 13:44:35,957 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-16 13:44:35,958 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-16 13:44:35,959 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-16 13:44:35,961 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-16 13:44:35,961 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-16 13:44:35,961 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-16 13:44:35,962 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-16 13:44:35,963 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-16 13:44:35,964 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-16 13:44:35,964 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-16 13:44:35,964 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-16 13:44:35,965 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-16 13:44:35,966 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-16 13:44:35,967 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-16 13:44:35,967 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-16 13:44:35,967 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-16 13:44:35,968 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-16 13:44:35,968 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-16 13:44:35,969 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-16 13:44:35,969 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-16 13:44:35,970 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf [2020-10-16 13:44:35,995 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-16 13:44:35,995 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-16 13:44:35,996 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-16 13:44:35,996 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-16 13:44:35,997 INFO L138 SettingsManager]: * Use SBE=true [2020-10-16 13:44:35,997 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-16 13:44:35,997 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-16 13:44:35,997 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-16 13:44:35,997 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-16 13:44:35,998 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-16 13:44:35,998 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-16 13:44:35,998 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-16 13:44:35,998 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-16 13:44:35,998 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-16 13:44:35,998 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-16 13:44:35,999 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-16 13:44:35,999 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-16 13:44:35,999 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-16 13:44:35,999 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-16 13:44:35,999 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-16 13:44:36,000 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-16 13:44:36,000 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 13:44:36,000 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-16 13:44:36,000 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-10-16 13:44:36,000 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-16 13:44:36,001 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-16 13:44:36,001 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-16 13:44:36,001 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-10-16 13:44:36,001 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-10-16 13:44:36,001 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-16 13:44:36,002 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2020-10-16 13:44:36,291 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-16 13:44:36,301 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-16 13:44:36,304 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-16 13:44:36,306 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-16 13:44:36,306 INFO L275 PluginConnector]: CDTParser initialized [2020-10-16 13:44:36,307 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe025_pso.opt.i [2020-10-16 13:44:36,379 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f8ab62bef/0f6d9e2a16d448dc8765e87eff1d883b/FLAGd354ccce0 [2020-10-16 13:44:36,886 INFO L306 CDTParser]: Found 1 translation units. [2020-10-16 13:44:36,887 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/pthread-wmm/safe025_pso.opt.i [2020-10-16 13:44:36,904 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f8ab62bef/0f6d9e2a16d448dc8765e87eff1d883b/FLAGd354ccce0 [2020-10-16 13:44:37,229 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f8ab62bef/0f6d9e2a16d448dc8765e87eff1d883b [2020-10-16 13:44:37,237 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-16 13:44:37,239 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-16 13:44:37,240 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-16 13:44:37,240 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-16 13:44:37,244 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-16 13:44:37,245 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 01:44:37" (1/1) ... [2020-10-16 13:44:37,247 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@510c53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:44:37, skipping insertion in model container [2020-10-16 13:44:37,248 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 01:44:37" (1/1) ... [2020-10-16 13:44:37,255 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-16 13:44:37,314 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-16 13:44:37,821 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 13:44:37,833 INFO L203 MainTranslator]: Completed pre-run [2020-10-16 13:44:37,873 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 13:44:37,949 INFO L208 MainTranslator]: Completed translation [2020-10-16 13:44:37,949 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:44:37 WrapperNode [2020-10-16 13:44:37,950 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-16 13:44:37,951 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-16 13:44:37,951 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-16 13:44:37,952 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-16 13:44:37,962 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:44:37" (1/1) ... [2020-10-16 13:44:37,982 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:44:37" (1/1) ... [2020-10-16 13:44:38,003 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-16 13:44:38,003 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-16 13:44:38,003 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-16 13:44:38,003 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-16 13:44:38,010 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:44:37" (1/1) ... [2020-10-16 13:44:38,010 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:44:37" (1/1) ... [2020-10-16 13:44:38,013 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:44:37" (1/1) ... [2020-10-16 13:44:38,014 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:44:37" (1/1) ... [2020-10-16 13:44:38,020 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:44:37" (1/1) ... [2020-10-16 13:44:38,022 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:44:37" (1/1) ... [2020-10-16 13:44:38,025 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:44:37" (1/1) ... [2020-10-16 13:44:38,028 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-16 13:44:38,028 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-16 13:44:38,028 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-16 13:44:38,028 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-16 13:44:38,029 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:44:37" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 13:44:38,113 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-16 13:44:38,113 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-16 13:44:38,113 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-16 13:44:38,114 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-16 13:44:38,114 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-16 13:44:38,114 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-16 13:44:38,115 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-16 13:44:38,116 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-16 13:44:38,116 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-16 13:44:38,117 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-16 13:44:38,117 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-16 13:44:38,117 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-16 13:44:38,117 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-16 13:44:38,119 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-16 13:44:38,463 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-16 13:44:38,464 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-16 13:44:38,466 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 01:44:38 BoogieIcfgContainer [2020-10-16 13:44:38,467 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-16 13:44:38,468 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-16 13:44:38,468 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-16 13:44:38,472 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-16 13:44:38,472 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 01:44:37" (1/3) ... [2020-10-16 13:44:38,473 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ad2477e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 01:44:38, skipping insertion in model container [2020-10-16 13:44:38,473 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:44:37" (2/3) ... [2020-10-16 13:44:38,474 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ad2477e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 01:44:38, skipping insertion in model container [2020-10-16 13:44:38,474 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 01:44:38" (3/3) ... [2020-10-16 13:44:38,476 INFO L111 eAbstractionObserver]: Analyzing ICFG safe025_pso.opt.i [2020-10-16 13:44:38,488 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-16 13:44:38,489 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-16 13:44:38,496 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-16 13:44:38,497 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-16 13:44:38,529 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:44:38,529 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:44:38,529 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:44:38,530 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:44:38,531 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:44:38,531 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:44:38,532 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:44:38,532 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:44:38,532 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:44:38,532 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:44:38,533 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:44:38,533 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:44:38,534 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:44:38,534 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:44:38,534 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:44:38,534 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:44:38,535 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:44:38,535 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:44:38,539 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:44:38,539 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:44:38,540 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:44:38,540 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:44:38,550 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:44:38,550 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:44:38,551 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:44:38,551 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:44:38,556 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:44:38,557 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:44:38,557 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:44:38,557 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:44:38,561 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-16 13:44:38,575 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-16 13:44:38,597 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 13:44:38,598 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-16 13:44:38,598 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-16 13:44:38,598 INFO L380 AbstractCegarLoop]: Backedges is MCR [2020-10-16 13:44:38,598 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 13:44:38,598 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 13:44:38,599 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 13:44:38,599 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 13:44:38,612 INFO L137 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-10-16 13:44:38,613 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 70 transitions, 155 flow [2020-10-16 13:44:38,616 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 78 places, 70 transitions, 155 flow [2020-10-16 13:44:38,618 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-10-16 13:44:38,662 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-10-16 13:44:38,662 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 13:44:38,668 INFO L80 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 67 events. 2/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 51 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-10-16 13:44:38,671 INFO L117 LiptonReduction]: Number of co-enabled transitions 1260 [2020-10-16 13:44:40,131 INFO L132 LiptonReduction]: Checked pairs total: 2936 [2020-10-16 13:44:40,132 INFO L134 LiptonReduction]: Total number of compositions: 59 [2020-10-16 13:44:40,139 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-10-16 13:44:40,165 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-10-16 13:44:40,167 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-10-16 13:44:40,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-16 13:44:40,176 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:44:40,177 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:44:40,177 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:44:40,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:44:40,183 INFO L82 PathProgramCache]: Analyzing trace with hash 1655297948, now seen corresponding path program 1 times [2020-10-16 13:44:40,204 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:44:40,205 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755817639] [2020-10-16 13:44:40,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:44:40,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:44:40,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 13:44:40,426 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755817639] [2020-10-16 13:44:40,426 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:44:40,427 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 13:44:40,427 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1851263792] [2020-10-16 13:44:40,428 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:44:40,431 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:44:40,446 INFO L258 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-10-16 13:44:40,447 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:44:40,451 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:44:40,452 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 13:44:40,452 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:44:40,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 13:44:40,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 13:44:40,470 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-10-16 13:44:40,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:44:40,514 INFO L93 Difference]: Finished difference Result 282 states and 808 transitions. [2020-10-16 13:44:40,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 13:44:40,516 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-10-16 13:44:40,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:44:40,532 INFO L225 Difference]: With dead ends: 282 [2020-10-16 13:44:40,533 INFO L226 Difference]: Without dead ends: 218 [2020-10-16 13:44:40,534 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 13:44:40,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-10-16 13:44:40,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2020-10-16 13:44:40,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-10-16 13:44:40,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 600 transitions. [2020-10-16 13:44:40,601 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 600 transitions. Word has length 8 [2020-10-16 13:44:40,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:44:40,602 INFO L481 AbstractCegarLoop]: Abstraction has 218 states and 600 transitions. [2020-10-16 13:44:40,602 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 13:44:40,602 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 600 transitions. [2020-10-16 13:44:40,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-16 13:44:40,604 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:44:40,604 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:44:40,604 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-16 13:44:40,605 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:44:40,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:44:40,605 INFO L82 PathProgramCache]: Analyzing trace with hash -225372059, now seen corresponding path program 1 times [2020-10-16 13:44:40,607 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:44:40,607 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405008435] [2020-10-16 13:44:40,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:44:40,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:44:40,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 13:44:40,679 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405008435] [2020-10-16 13:44:40,679 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:44:40,679 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 13:44:40,679 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [621692886] [2020-10-16 13:44:40,680 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:44:40,680 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:44:40,686 INFO L258 McrAutomatonBuilder]: Finished intersection with 13 states and 15 transitions. [2020-10-16 13:44:40,686 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:44:40,721 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:44:40,722 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 13:44:40,722 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:44:40,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 13:44:40,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 13:44:40,723 INFO L87 Difference]: Start difference. First operand 218 states and 600 transitions. Second operand 3 states. [2020-10-16 13:44:40,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:44:40,742 INFO L93 Difference]: Finished difference Result 202 states and 544 transitions. [2020-10-16 13:44:40,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 13:44:40,742 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-10-16 13:44:40,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:44:40,745 INFO L225 Difference]: With dead ends: 202 [2020-10-16 13:44:40,745 INFO L226 Difference]: Without dead ends: 202 [2020-10-16 13:44:40,746 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 [2020-10-16 13:44:40,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-10-16 13:44:40,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2020-10-16 13:44:40,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-10-16 13:44:40,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 544 transitions. [2020-10-16 13:44:40,764 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 544 transitions. Word has length 9 [2020-10-16 13:44:40,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:44:40,765 INFO L481 AbstractCegarLoop]: Abstraction has 202 states and 544 transitions. [2020-10-16 13:44:40,765 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 13:44:40,765 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 544 transitions. [2020-10-16 13:44:40,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-16 13:44:40,766 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:44:40,767 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:44:40,767 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-16 13:44:40,767 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:44:40,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:44:40,767 INFO L82 PathProgramCache]: Analyzing trace with hash 1603398907, now seen corresponding path program 1 times [2020-10-16 13:44:40,769 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:44:40,769 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028909690] [2020-10-16 13:44:40,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:44:40,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:44:40,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 13:44:40,827 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028909690] [2020-10-16 13:44:40,828 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:44:40,828 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 13:44:40,828 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1241989754] [2020-10-16 13:44:40,828 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:44:40,829 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:44:40,831 INFO L258 McrAutomatonBuilder]: Finished intersection with 17 states and 22 transitions. [2020-10-16 13:44:40,831 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:44:40,865 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:44:40,866 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 13:44:40,866 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:44:40,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 13:44:40,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 13:44:40,867 INFO L87 Difference]: Start difference. First operand 202 states and 544 transitions. Second operand 3 states. [2020-10-16 13:44:40,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:44:40,874 INFO L93 Difference]: Finished difference Result 194 states and 518 transitions. [2020-10-16 13:44:40,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 13:44:40,874 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-10-16 13:44:40,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:44:40,877 INFO L225 Difference]: With dead ends: 194 [2020-10-16 13:44:40,877 INFO L226 Difference]: Without dead ends: 194 [2020-10-16 13:44:40,877 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 13:44:40,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2020-10-16 13:44:40,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 194. [2020-10-16 13:44:40,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2020-10-16 13:44:40,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 518 transitions. [2020-10-16 13:44:40,892 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 518 transitions. Word has length 10 [2020-10-16 13:44:40,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:44:40,893 INFO L481 AbstractCegarLoop]: Abstraction has 194 states and 518 transitions. [2020-10-16 13:44:40,893 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 13:44:40,893 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 518 transitions. [2020-10-16 13:44:40,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-16 13:44:40,895 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:44:40,895 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:44:40,895 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-16 13:44:40,895 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:44:40,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:44:40,896 INFO L82 PathProgramCache]: Analyzing trace with hash -1834242640, now seen corresponding path program 1 times [2020-10-16 13:44:40,897 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:44:40,897 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840415529] [2020-10-16 13:44:40,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:44:40,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:44:40,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 13:44:40,969 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840415529] [2020-10-16 13:44:40,970 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:44:40,970 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 13:44:40,970 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1363302970] [2020-10-16 13:44:40,970 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:44:40,971 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:44:40,973 INFO L258 McrAutomatonBuilder]: Finished intersection with 19 states and 25 transitions. [2020-10-16 13:44:40,973 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:44:40,996 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-10-16 13:44:41,046 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-10-16 13:44:41,068 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-10-16 13:44:41,082 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [2596#(not (= 3 ~__unbuffered_cnt~0))] [2020-10-16 13:44:41,082 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 13:44:41,082 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:44:41,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 13:44:41,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 13:44:41,083 INFO L87 Difference]: Start difference. First operand 194 states and 518 transitions. Second operand 5 states. [2020-10-16 13:44:41,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:44:41,139 INFO L93 Difference]: Finished difference Result 187 states and 470 transitions. [2020-10-16 13:44:41,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-16 13:44:41,140 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-10-16 13:44:41,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:44:41,141 INFO L225 Difference]: With dead ends: 187 [2020-10-16 13:44:41,141 INFO L226 Difference]: Without dead ends: 123 [2020-10-16 13:44:41,142 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-16 13:44:41,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2020-10-16 13:44:41,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2020-10-16 13:44:41,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-10-16 13:44:41,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 272 transitions. [2020-10-16 13:44:41,149 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 272 transitions. Word has length 11 [2020-10-16 13:44:41,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:44:41,149 INFO L481 AbstractCegarLoop]: Abstraction has 123 states and 272 transitions. [2020-10-16 13:44:41,149 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 13:44:41,150 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 272 transitions. [2020-10-16 13:44:41,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 13:44:41,151 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:44:41,151 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:44:41,151 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-16 13:44:41,152 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:44:41,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:44:41,152 INFO L82 PathProgramCache]: Analyzing trace with hash -1911316559, now seen corresponding path program 1 times [2020-10-16 13:44:41,153 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:44:41,154 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818049550] [2020-10-16 13:44:41,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:44:41,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:44:41,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 13:44:41,240 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818049550] [2020-10-16 13:44:41,240 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:44:41,240 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-16 13:44:41,240 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1192056287] [2020-10-16 13:44:41,241 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:44:41,242 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:44:41,261 INFO L258 McrAutomatonBuilder]: Finished intersection with 23 states and 30 transitions. [2020-10-16 13:44:41,262 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:44:41,311 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:44:41,312 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-16 13:44:41,312 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:44:41,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-16 13:44:41,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-16 13:44:41,313 INFO L87 Difference]: Start difference. First operand 123 states and 272 transitions. Second operand 6 states. [2020-10-16 13:44:41,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:44:41,378 INFO L93 Difference]: Finished difference Result 118 states and 260 transitions. [2020-10-16 13:44:41,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-16 13:44:41,379 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-10-16 13:44:41,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:44:41,380 INFO L225 Difference]: With dead ends: 118 [2020-10-16 13:44:41,380 INFO L226 Difference]: Without dead ends: 108 [2020-10-16 13:44:41,381 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-10-16 13:44:41,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-10-16 13:44:41,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2020-10-16 13:44:41,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-10-16 13:44:41,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 242 transitions. [2020-10-16 13:44:41,386 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 242 transitions. Word has length 14 [2020-10-16 13:44:41,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:44:41,387 INFO L481 AbstractCegarLoop]: Abstraction has 108 states and 242 transitions. [2020-10-16 13:44:41,387 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-16 13:44:41,387 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 242 transitions. [2020-10-16 13:44:41,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-16 13:44:41,388 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:44:41,389 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:44:41,389 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-16 13:44:41,389 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:44:41,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:44:41,390 INFO L82 PathProgramCache]: Analyzing trace with hash 1074918836, now seen corresponding path program 1 times [2020-10-16 13:44:41,392 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:44:41,392 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427558112] [2020-10-16 13:44:41,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:44:41,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:44:41,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 13:44:41,429 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427558112] [2020-10-16 13:44:41,429 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:44:41,429 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 13:44:41,429 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1546195959] [2020-10-16 13:44:41,430 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:44:41,432 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:44:41,437 INFO L258 McrAutomatonBuilder]: Finished intersection with 46 states and 77 transitions. [2020-10-16 13:44:41,438 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:44:41,596 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:44:41,596 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 13:44:41,596 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:44:41,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 13:44:41,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 13:44:41,597 INFO L87 Difference]: Start difference. First operand 108 states and 242 transitions. Second operand 4 states. [2020-10-16 13:44:41,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:44:41,616 INFO L93 Difference]: Finished difference Result 133 states and 289 transitions. [2020-10-16 13:44:41,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 13:44:41,617 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-10-16 13:44:41,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:44:41,618 INFO L225 Difference]: With dead ends: 133 [2020-10-16 13:44:41,618 INFO L226 Difference]: Without dead ends: 54 [2020-10-16 13:44:41,619 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-16 13:44:41,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-16 13:44:41,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2020-10-16 13:44:41,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-10-16 13:44:41,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 98 transitions. [2020-10-16 13:44:41,622 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 98 transitions. Word has length 17 [2020-10-16 13:44:41,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:44:41,622 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 98 transitions. [2020-10-16 13:44:41,622 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 13:44:41,622 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 98 transitions. [2020-10-16 13:44:41,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-16 13:44:41,624 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:44:41,624 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:44:41,624 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-16 13:44:41,625 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:44:41,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:44:41,625 INFO L82 PathProgramCache]: Analyzing trace with hash 1637147722, now seen corresponding path program 2 times [2020-10-16 13:44:41,626 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:44:41,626 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461951717] [2020-10-16 13:44:41,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:44:41,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:44:41,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 13:44:41,659 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461951717] [2020-10-16 13:44:41,659 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:44:41,659 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 13:44:41,660 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2013474129] [2020-10-16 13:44:41,660 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:44:41,662 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:44:41,666 INFO L258 McrAutomatonBuilder]: Finished intersection with 28 states and 37 transitions. [2020-10-16 13:44:41,666 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:44:41,688 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:44:41,689 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 13:44:41,689 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:44:41,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 13:44:41,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 13:44:41,690 INFO L87 Difference]: Start difference. First operand 54 states and 98 transitions. Second operand 4 states. [2020-10-16 13:44:41,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:44:41,707 INFO L93 Difference]: Finished difference Result 63 states and 111 transitions. [2020-10-16 13:44:41,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 13:44:41,708 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-10-16 13:44:41,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:44:41,709 INFO L225 Difference]: With dead ends: 63 [2020-10-16 13:44:41,709 INFO L226 Difference]: Without dead ends: 38 [2020-10-16 13:44:41,709 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-16 13:44:41,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-10-16 13:44:41,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2020-10-16 13:44:41,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-10-16 13:44:41,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 62 transitions. [2020-10-16 13:44:41,711 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 62 transitions. Word has length 17 [2020-10-16 13:44:41,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:44:41,712 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 62 transitions. [2020-10-16 13:44:41,712 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 13:44:41,712 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 62 transitions. [2020-10-16 13:44:41,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-16 13:44:41,713 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:44:41,713 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:44:41,713 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-16 13:44:41,713 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:44:41,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:44:41,714 INFO L82 PathProgramCache]: Analyzing trace with hash 1965606506, now seen corresponding path program 3 times [2020-10-16 13:44:41,715 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:44:41,715 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575635577] [2020-10-16 13:44:41,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:44:41,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:44:41,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 13:44:41,747 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575635577] [2020-10-16 13:44:41,748 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:44:41,748 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 13:44:41,748 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [698783162] [2020-10-16 13:44:41,748 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:44:41,750 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:44:41,754 INFO L258 McrAutomatonBuilder]: Finished intersection with 21 states and 23 transitions. [2020-10-16 13:44:41,754 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:44:41,764 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:44:41,765 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 13:44:41,765 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:44:41,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 13:44:41,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 13:44:41,766 INFO L87 Difference]: Start difference. First operand 38 states and 62 transitions. Second operand 4 states. [2020-10-16 13:44:41,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:44:41,782 INFO L93 Difference]: Finished difference Result 56 states and 90 transitions. [2020-10-16 13:44:41,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 13:44:41,783 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-10-16 13:44:41,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:44:41,784 INFO L225 Difference]: With dead ends: 56 [2020-10-16 13:44:41,784 INFO L226 Difference]: Without dead ends: 35 [2020-10-16 13:44:41,785 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-16 13:44:41,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-10-16 13:44:41,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2020-10-16 13:44:41,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-10-16 13:44:41,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 56 transitions. [2020-10-16 13:44:41,787 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 56 transitions. Word has length 17 [2020-10-16 13:44:41,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:44:41,787 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 56 transitions. [2020-10-16 13:44:41,787 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 13:44:41,788 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 56 transitions. [2020-10-16 13:44:41,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-16 13:44:41,788 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:44:41,788 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:44:41,789 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-16 13:44:41,789 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:44:41,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:44:41,789 INFO L82 PathProgramCache]: Analyzing trace with hash -828702424, now seen corresponding path program 4 times [2020-10-16 13:44:41,790 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:44:41,791 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835196671] [2020-10-16 13:44:41,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:44:41,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:44:41,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 13:44:41,824 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835196671] [2020-10-16 13:44:41,824 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:44:41,825 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 13:44:41,825 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [780171010] [2020-10-16 13:44:41,825 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:44:41,827 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:44:41,831 INFO L258 McrAutomatonBuilder]: Finished intersection with 21 states and 23 transitions. [2020-10-16 13:44:41,831 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:44:41,836 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:44:41,836 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 13:44:41,836 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:44:41,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 13:44:41,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 13:44:41,837 INFO L87 Difference]: Start difference. First operand 35 states and 56 transitions. Second operand 4 states. [2020-10-16 13:44:41,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:44:41,853 INFO L93 Difference]: Finished difference Result 34 states and 55 transitions. [2020-10-16 13:44:41,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 13:44:41,854 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-10-16 13:44:41,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:44:41,854 INFO L225 Difference]: With dead ends: 34 [2020-10-16 13:44:41,854 INFO L226 Difference]: Without dead ends: 0 [2020-10-16 13:44:41,855 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-16 13:44:41,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-16 13:44:41,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-16 13:44:41,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-16 13:44:41,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-16 13:44:41,856 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-10-16 13:44:41,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:44:41,856 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-16 13:44:41,856 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 13:44:41,856 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-16 13:44:41,856 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-16 13:44:41,857 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-16 13:44:41,860 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 01:44:41 BasicIcfg [2020-10-16 13:44:41,860 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-16 13:44:41,863 INFO L168 Benchmark]: Toolchain (without parser) took 4623.22 ms. Allocated memory was 146.8 MB in the beginning and 247.5 MB in the end (delta: 100.7 MB). Free memory was 100.6 MB in the beginning and 118.0 MB in the end (delta: -17.5 MB). Peak memory consumption was 83.2 MB. Max. memory is 7.1 GB. [2020-10-16 13:44:41,864 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 146.8 MB. Free memory was 120.1 MB in the beginning and 119.9 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-10-16 13:44:41,865 INFO L168 Benchmark]: CACSL2BoogieTranslator took 710.06 ms. Allocated memory was 146.8 MB in the beginning and 203.4 MB in the end (delta: 56.6 MB). Free memory was 100.1 MB in the beginning and 159.0 MB in the end (delta: -58.9 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB. [2020-10-16 13:44:41,866 INFO L168 Benchmark]: Boogie Procedure Inliner took 51.64 ms. Allocated memory is still 203.4 MB. Free memory was 159.0 MB in the beginning and 157.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. [2020-10-16 13:44:41,867 INFO L168 Benchmark]: Boogie Preprocessor took 24.79 ms. Allocated memory is still 203.4 MB. Free memory was 157.0 MB in the beginning and 155.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-10-16 13:44:41,867 INFO L168 Benchmark]: RCFGBuilder took 438.53 ms. Allocated memory is still 203.4 MB. Free memory was 155.0 MB in the beginning and 132.7 MB in the end (delta: 22.3 MB). Peak memory consumption was 22.3 MB. Max. memory is 7.1 GB. [2020-10-16 13:44:41,868 INFO L168 Benchmark]: TraceAbstraction took 3392.39 ms. Allocated memory was 203.4 MB in the beginning and 247.5 MB in the end (delta: 44.0 MB). Free memory was 132.7 MB in the beginning and 118.0 MB in the end (delta: 14.7 MB). Peak memory consumption was 58.8 MB. Max. memory is 7.1 GB. [2020-10-16 13:44:41,872 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 146.8 MB. Free memory was 120.1 MB in the beginning and 119.9 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 710.06 ms. Allocated memory was 146.8 MB in the beginning and 203.4 MB in the end (delta: 56.6 MB). Free memory was 100.1 MB in the beginning and 159.0 MB in the end (delta: -58.9 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 51.64 ms. Allocated memory is still 203.4 MB. Free memory was 159.0 MB in the beginning and 157.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 24.79 ms. Allocated memory is still 203.4 MB. Free memory was 157.0 MB in the beginning and 155.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 438.53 ms. Allocated memory is still 203.4 MB. Free memory was 155.0 MB in the beginning and 132.7 MB in the end (delta: 22.3 MB). Peak memory consumption was 22.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3392.39 ms. Allocated memory was 203.4 MB in the beginning and 247.5 MB in the end (delta: 44.0 MB). Free memory was 132.7 MB in the beginning and 118.0 MB in the end (delta: 14.7 MB). Peak memory consumption was 58.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 673 VarBasedMoverChecksPositive, 23 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 29 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.5s, 78 PlacesBefore, 31 PlacesAfterwards, 70 TransitionsBefore, 22 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 7 FixpointIterations, 14 TrivialSequentialCompositions, 35 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 1 ChoiceCompositions, 59 TotalNumberOfCompositions, 2936 MoverChecksTotal - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 69 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.2s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.5s, HoareTripleCheckerStatistics: 186 SDtfs, 119 SDslu, 218 SDs, 0 SdLazy, 110 SolverSat, 21 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 96 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 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, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 120 NumberOfCodeBlocks, 120 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 111 ConstructedInterpolants, 0 QuantifiedInterpolants, 3869 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...