/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/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-VariableLbe-MCR.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe036_rmo.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-4336eb1 [2019-12-27 23:03:05,988 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-27 23:03:05,991 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-27 23:03:06,011 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-27 23:03:06,011 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-27 23:03:06,013 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-27 23:03:06,015 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-27 23:03:06,026 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-27 23:03:06,029 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-27 23:03:06,032 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-27 23:03:06,034 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-27 23:03:06,036 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-27 23:03:06,036 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-27 23:03:06,038 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-27 23:03:06,041 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-27 23:03:06,042 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-27 23:03:06,044 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-27 23:03:06,044 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-27 23:03:06,046 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-27 23:03:06,051 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-27 23:03:06,055 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-27 23:03:06,060 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-27 23:03:06,061 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-27 23:03:06,061 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-27 23:03:06,064 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-12-27 23:03:06,068 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-27 23:03:06,069 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-27 23:03:06,070 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-27 23:03:06,071 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-27 23:03:06,073 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-27 23:03:06,073 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-27 23:03:06,074 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-27 23:03:06,074 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-27 23:03:06,074 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-27 23:03:06,075 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-27 23:03:06,076 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-27 23:03:06,077 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-VariableLbe-MCR.epf [2019-12-27 23:03:06,112 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-27 23:03:06,113 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-27 23:03:06,117 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-27 23:03:06,117 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-27 23:03:06,118 INFO L138 SettingsManager]: * Use SBE=true [2019-12-27 23:03:06,118 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-27 23:03:06,118 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-27 23:03:06,118 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-27 23:03:06,118 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-27 23:03:06,118 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-27 23:03:06,119 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-27 23:03:06,120 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-27 23:03:06,120 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-27 23:03:06,120 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-27 23:03:06,120 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-27 23:03:06,120 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-27 23:03:06,122 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-27 23:03:06,122 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-27 23:03:06,122 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-27 23:03:06,122 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-27 23:03:06,122 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-27 23:03:06,123 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-27 23:03:06,123 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-27 23:03:06,123 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-27 23:03:06,123 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-27 23:03:06,123 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-27 23:03:06,124 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-27 23:03:06,124 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2019-12-27 23:03:06,124 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2019-12-27 23:03:06,124 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-27 23:03:06,124 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2019-12-27 23:03:06,124 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-27 23:03:06,412 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-27 23:03:06,425 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-27 23:03:06,429 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-27 23:03:06,430 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-27 23:03:06,431 INFO L275 PluginConnector]: CDTParser initialized [2019-12-27 23:03:06,432 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe036_rmo.opt.i [2019-12-27 23:03:06,499 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e3e9a047e/3a2e32ec6c364787b7ef706feed09a36/FLAG481279664 [2019-12-27 23:03:07,044 INFO L306 CDTParser]: Found 1 translation units. [2019-12-27 23:03:07,046 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe036_rmo.opt.i [2019-12-27 23:03:07,070 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e3e9a047e/3a2e32ec6c364787b7ef706feed09a36/FLAG481279664 [2019-12-27 23:03:07,294 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e3e9a047e/3a2e32ec6c364787b7ef706feed09a36 [2019-12-27 23:03:07,305 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-27 23:03:07,307 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-12-27 23:03:07,308 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-27 23:03:07,309 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-27 23:03:07,312 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-27 23:03:07,313 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.12 11:03:07" (1/1) ... [2019-12-27 23:03:07,316 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36e06cb3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 11:03:07, skipping insertion in model container [2019-12-27 23:03:07,317 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.12 11:03:07" (1/1) ... [2019-12-27 23:03:07,325 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-27 23:03:07,387 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-27 23:03:07,916 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-27 23:03:07,929 INFO L203 MainTranslator]: Completed pre-run [2019-12-27 23:03:08,003 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-27 23:03:08,080 INFO L208 MainTranslator]: Completed translation [2019-12-27 23:03:08,081 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 11:03:08 WrapperNode [2019-12-27 23:03:08,081 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-27 23:03:08,082 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-27 23:03:08,082 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-27 23:03:08,082 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-27 23:03:08,091 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 11:03:08" (1/1) ... [2019-12-27 23:03:08,107 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 11:03:08" (1/1) ... [2019-12-27 23:03:08,128 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-27 23:03:08,129 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-27 23:03:08,129 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-27 23:03:08,129 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-27 23:03:08,138 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 11:03:08" (1/1) ... [2019-12-27 23:03:08,139 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 11:03:08" (1/1) ... [2019-12-27 23:03:08,141 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 11:03:08" (1/1) ... [2019-12-27 23:03:08,142 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 11:03:08" (1/1) ... [2019-12-27 23:03:08,148 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 11:03:08" (1/1) ... [2019-12-27 23:03:08,150 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 11:03:08" (1/1) ... [2019-12-27 23:03:08,152 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 11:03:08" (1/1) ... [2019-12-27 23:03:08,154 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-27 23:03:08,155 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-27 23:03:08,155 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-27 23:03:08,155 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-27 23:03:08,156 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 11:03:08" (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 [2019-12-27 23:03:08,221 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-12-27 23:03:08,221 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2019-12-27 23:03:08,221 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-27 23:03:08,222 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-27 23:03:08,222 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2019-12-27 23:03:08,222 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2019-12-27 23:03:08,222 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2019-12-27 23:03:08,222 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2019-12-27 23:03:08,222 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2019-12-27 23:03:08,223 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-27 23:03:08,223 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-27 23:03:08,225 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2019-12-27 23:03:08,591 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-27 23:03:08,591 INFO L287 CfgBuilder]: Removed 6 assume(true) statements. [2019-12-27 23:03:08,593 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.12 11:03:08 BoogieIcfgContainer [2019-12-27 23:03:08,593 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-27 23:03:08,594 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-27 23:03:08,594 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-27 23:03:08,598 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-27 23:03:08,598 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.12 11:03:07" (1/3) ... [2019-12-27 23:03:08,599 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cc47854 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.12 11:03:08, skipping insertion in model container [2019-12-27 23:03:08,599 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 11:03:08" (2/3) ... [2019-12-27 23:03:08,600 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cc47854 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.12 11:03:08, skipping insertion in model container [2019-12-27 23:03:08,600 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.12 11:03:08" (3/3) ... [2019-12-27 23:03:08,602 INFO L109 eAbstractionObserver]: Analyzing ICFG safe036_rmo.opt.i [2019-12-27 23:03:08,612 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2019-12-27 23:03:08,612 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-27 23:03:08,619 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-27 23:03:08,620 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2019-12-27 23:03:08,643 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 23:03:08,644 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 23:03:08,644 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 23:03:08,644 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 23:03:08,645 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 23:03:08,645 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 23:03:08,645 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 23:03:08,646 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 23:03:08,646 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 23:03:08,646 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 23:03:08,646 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 23:03:08,646 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 23:03:08,650 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 23:03:08,650 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 23:03:08,651 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 23:03:08,651 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 23:03:08,657 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 23:03:08,658 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 23:03:08,658 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 23:03:08,658 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 23:03:08,671 INFO L249 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2019-12-27 23:03:08,687 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-27 23:03:08,687 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-27 23:03:08,688 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-27 23:03:08,688 INFO L376 AbstractCegarLoop]: Backedges is MCR [2019-12-27 23:03:08,688 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-27 23:03:08,688 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-27 23:03:08,688 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-27 23:03:08,688 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-27 23:03:08,700 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 49 places, 43 transitions [2019-12-27 23:03:08,702 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 49 places, 43 transitions [2019-12-27 23:03:08,739 INFO L132 PetriNetUnfolder]: 1/41 cut-off events. [2019-12-27 23:03:08,739 INFO L133 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-27 23:03:08,745 INFO L76 FinitePrefix]: Finished finitePrefix Result has 48 conditions, 41 events. 1/41 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 16 event pairs. 0/39 useless extension candidates. Maximal degree in co-relation 28. Up to 2 conditions per place. [2019-12-27 23:03:08,750 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 49 places, 43 transitions [2019-12-27 23:03:08,767 INFO L132 PetriNetUnfolder]: 1/41 cut-off events. [2019-12-27 23:03:08,767 INFO L133 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-27 23:03:08,769 INFO L76 FinitePrefix]: Finished finitePrefix Result has 48 conditions, 41 events. 1/41 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 16 event pairs. 0/39 useless extension candidates. Maximal degree in co-relation 28. Up to 2 conditions per place. [2019-12-27 23:03:08,770 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 234 [2019-12-27 23:03:08,771 INFO L182 etLargeBlockEncoding]: Variable Check. [2019-12-27 23:03:10,082 INFO L206 etLargeBlockEncoding]: Checked pairs total: 242 [2019-12-27 23:03:10,082 INFO L214 etLargeBlockEncoding]: Total number of compositions: 37 [2019-12-27 23:03:10,087 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 15 places, 11 transitions [2019-12-27 23:03:10,097 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 22 states. [2019-12-27 23:03:10,099 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2019-12-27 23:03:10,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-12-27 23:03:10,108 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 23:03:10,109 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-12-27 23:03:10,110 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 23:03:10,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 23:03:10,118 INFO L82 PathProgramCache]: Analyzing trace with hash 550784875, now seen corresponding path program 1 times [2019-12-27 23:03:10,130 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 23:03:10,131 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136592209] [2019-12-27 23:03:10,131 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 23:03:10,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 23:03:10,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 23:03:10,406 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136592209] [2019-12-27 23:03:10,409 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-27 23:03:10,410 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-27 23:03:10,410 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2111754288] [2019-12-27 23:03:10,411 INFO L132 pAbStrategyModuleMcr]: Constructing automaton for MCR equivalence class. [2019-12-27 23:03:10,419 INFO L197 pAbStrategyModuleMcr]: Started intersection. [2019-12-27 23:03:10,433 INFO L208 pAbStrategyModuleMcr]: Finished intersection with 7 states and 6 transitions. [2019-12-27 23:03:10,434 INFO L219 pAbStrategyModuleMcr]: Constructing interpolant automaton by labelling MCR automaton. [2019-12-27 23:03:10,438 INFO L288 pAbStrategyModuleMcr]: Construction finished. Needed to calculate wp 0 times. [2019-12-27 23:03:10,439 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-27 23:03:10,439 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 23:03:10,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-27 23:03:10,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-27 23:03:10,454 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 4 states. [2019-12-27 23:03:10,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 23:03:10,510 INFO L93 Difference]: Finished difference Result 23 states and 32 transitions. [2019-12-27 23:03:10,511 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-27 23:03:10,513 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2019-12-27 23:03:10,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 23:03:10,537 INFO L225 Difference]: With dead ends: 23 [2019-12-27 23:03:10,537 INFO L226 Difference]: Without dead ends: 16 [2019-12-27 23:03:10,539 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-12-27 23:03:10,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2019-12-27 23:03:10,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2019-12-27 23:03:10,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-12-27 23:03:10,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 22 transitions. [2019-12-27 23:03:10,594 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 22 transitions. Word has length 6 [2019-12-27 23:03:10,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 23:03:10,595 INFO L462 AbstractCegarLoop]: Abstraction has 16 states and 22 transitions. [2019-12-27 23:03:10,595 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-27 23:03:10,595 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 22 transitions. [2019-12-27 23:03:10,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-12-27 23:03:10,596 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 23:03:10,596 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-12-27 23:03:10,596 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 23:03:10,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 23:03:10,597 INFO L82 PathProgramCache]: Analyzing trace with hash -105739058, now seen corresponding path program 1 times [2019-12-27 23:03:10,597 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 23:03:10,598 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459864452] [2019-12-27 23:03:10,598 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 23:03:10,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 23:03:10,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 23:03:10,728 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459864452] [2019-12-27 23:03:10,728 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-27 23:03:10,728 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-27 23:03:10,729 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1312675257] [2019-12-27 23:03:10,729 INFO L132 pAbStrategyModuleMcr]: Constructing automaton for MCR equivalence class. [2019-12-27 23:03:10,731 INFO L197 pAbStrategyModuleMcr]: Started intersection. [2019-12-27 23:03:10,737 INFO L208 pAbStrategyModuleMcr]: Finished intersection with 10 states and 11 transitions. [2019-12-27 23:03:10,737 INFO L219 pAbStrategyModuleMcr]: Constructing interpolant automaton by labelling MCR automaton. [2019-12-27 23:03:10,740 INFO L288 pAbStrategyModuleMcr]: Construction finished. Needed to calculate wp 0 times. [2019-12-27 23:03:10,741 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-27 23:03:10,742 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 23:03:10,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-27 23:03:10,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-12-27 23:03:10,742 INFO L87 Difference]: Start difference. First operand 16 states and 22 transitions. Second operand 5 states. [2019-12-27 23:03:10,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 23:03:10,796 INFO L93 Difference]: Finished difference Result 15 states and 18 transitions. [2019-12-27 23:03:10,797 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-27 23:03:10,797 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 7 [2019-12-27 23:03:10,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 23:03:10,797 INFO L225 Difference]: With dead ends: 15 [2019-12-27 23:03:10,798 INFO L226 Difference]: Without dead ends: 12 [2019-12-27 23:03:10,799 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-12-27 23:03:10,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2019-12-27 23:03:10,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2019-12-27 23:03:10,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-12-27 23:03:10,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 14 transitions. [2019-12-27 23:03:10,802 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 14 transitions. Word has length 7 [2019-12-27 23:03:10,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 23:03:10,802 INFO L462 AbstractCegarLoop]: Abstraction has 12 states and 14 transitions. [2019-12-27 23:03:10,802 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-27 23:03:10,802 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 14 transitions. [2019-12-27 23:03:10,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-12-27 23:03:10,803 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 23:03:10,803 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 23:03:10,803 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 23:03:10,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 23:03:10,803 INFO L82 PathProgramCache]: Analyzing trace with hash 1017118813, now seen corresponding path program 1 times [2019-12-27 23:03:10,804 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 23:03:10,804 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999631965] [2019-12-27 23:03:10,804 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 23:03:10,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 23:03:10,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 23:03:10,892 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999631965] [2019-12-27 23:03:10,893 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-27 23:03:10,893 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-27 23:03:10,893 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1412143353] [2019-12-27 23:03:10,893 INFO L132 pAbStrategyModuleMcr]: Constructing automaton for MCR equivalence class. [2019-12-27 23:03:10,894 INFO L197 pAbStrategyModuleMcr]: Started intersection. [2019-12-27 23:03:10,899 INFO L208 pAbStrategyModuleMcr]: Finished intersection with 11 states and 12 transitions. [2019-12-27 23:03:10,899 INFO L219 pAbStrategyModuleMcr]: Constructing interpolant automaton by labelling MCR automaton. [2019-12-27 23:03:10,899 INFO L288 pAbStrategyModuleMcr]: Construction finished. Needed to calculate wp 0 times. [2019-12-27 23:03:10,899 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-27 23:03:10,903 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 23:03:10,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-27 23:03:10,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-27 23:03:10,904 INFO L87 Difference]: Start difference. First operand 12 states and 14 transitions. Second operand 4 states. [2019-12-27 23:03:10,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 23:03:10,920 INFO L93 Difference]: Finished difference Result 14 states and 15 transitions. [2019-12-27 23:03:10,921 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-27 23:03:10,921 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2019-12-27 23:03:10,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 23:03:10,921 INFO L225 Difference]: With dead ends: 14 [2019-12-27 23:03:10,921 INFO L226 Difference]: Without dead ends: 9 [2019-12-27 23:03:10,922 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-12-27 23:03:10,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2019-12-27 23:03:10,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2019-12-27 23:03:10,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2019-12-27 23:03:10,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 8 transitions. [2019-12-27 23:03:10,924 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 8 transitions. Word has length 8 [2019-12-27 23:03:10,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 23:03:10,924 INFO L462 AbstractCegarLoop]: Abstraction has 9 states and 8 transitions. [2019-12-27 23:03:10,924 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-27 23:03:10,925 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 8 transitions. [2019-12-27 23:03:10,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-12-27 23:03:10,926 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 23:03:10,926 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 23:03:10,926 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 23:03:10,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 23:03:10,927 INFO L82 PathProgramCache]: Analyzing trace with hash 1025277703, now seen corresponding path program 2 times [2019-12-27 23:03:10,927 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 23:03:10,928 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987922967] [2019-12-27 23:03:10,928 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 23:03:10,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 23:03:11,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 23:03:11,006 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987922967] [2019-12-27 23:03:11,006 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-27 23:03:11,006 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-27 23:03:11,006 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [490048350] [2019-12-27 23:03:11,007 INFO L132 pAbStrategyModuleMcr]: Constructing automaton for MCR equivalence class. [2019-12-27 23:03:11,007 INFO L197 pAbStrategyModuleMcr]: Started intersection. [2019-12-27 23:03:11,010 INFO L208 pAbStrategyModuleMcr]: Finished intersection with 9 states and 8 transitions. [2019-12-27 23:03:11,010 INFO L219 pAbStrategyModuleMcr]: Constructing interpolant automaton by labelling MCR automaton. [2019-12-27 23:03:11,010 INFO L288 pAbStrategyModuleMcr]: Construction finished. Needed to calculate wp 0 times. [2019-12-27 23:03:11,010 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-27 23:03:11,011 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 23:03:11,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-27 23:03:11,011 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-27 23:03:11,012 INFO L87 Difference]: Start difference. First operand 9 states and 8 transitions. Second operand 4 states. [2019-12-27 23:03:11,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 23:03:11,026 INFO L93 Difference]: Finished difference Result 8 states and 7 transitions. [2019-12-27 23:03:11,026 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-27 23:03:11,026 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2019-12-27 23:03:11,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 23:03:11,027 INFO L225 Difference]: With dead ends: 8 [2019-12-27 23:03:11,027 INFO L226 Difference]: Without dead ends: 0 [2019-12-27 23:03:11,027 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-12-27 23:03:11,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-12-27 23:03:11,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-12-27 23:03:11,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-12-27 23:03:11,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-12-27 23:03:11,028 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 8 [2019-12-27 23:03:11,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 23:03:11,028 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-27 23:03:11,028 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-27 23:03:11,029 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-12-27 23:03:11,029 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-12-27 23:03:11,033 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.12 11:03:11 BasicIcfg [2019-12-27 23:03:11,033 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-27 23:03:11,036 INFO L168 Benchmark]: Toolchain (without parser) took 3728.45 ms. Allocated memory was 145.2 MB in the beginning and 248.0 MB in the end (delta: 102.8 MB). Free memory was 100.1 MB in the beginning and 181.5 MB in the end (delta: -81.4 MB). Peak memory consumption was 21.4 MB. Max. memory is 7.1 GB. [2019-12-27 23:03:11,038 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 145.2 MB. Free memory was 120.4 MB in the beginning and 120.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-12-27 23:03:11,040 INFO L168 Benchmark]: CACSL2BoogieTranslator took 773.14 ms. Allocated memory was 145.2 MB in the beginning and 203.4 MB in the end (delta: 58.2 MB). Free memory was 99.7 MB in the beginning and 159.8 MB in the end (delta: -60.2 MB). Peak memory consumption was 19.9 MB. Max. memory is 7.1 GB. [2019-12-27 23:03:11,042 INFO L168 Benchmark]: Boogie Procedure Inliner took 46.74 ms. Allocated memory is still 203.4 MB. Free memory was 159.8 MB in the beginning and 157.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2019-12-27 23:03:11,048 INFO L168 Benchmark]: Boogie Preprocessor took 25.64 ms. Allocated memory is still 203.4 MB. Free memory was 157.8 MB in the beginning and 156.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2019-12-27 23:03:11,048 INFO L168 Benchmark]: RCFGBuilder took 438.23 ms. Allocated memory is still 203.4 MB. Free memory was 156.5 MB in the beginning and 137.9 MB in the end (delta: 18.7 MB). Peak memory consumption was 18.7 MB. Max. memory is 7.1 GB. [2019-12-27 23:03:11,050 INFO L168 Benchmark]: TraceAbstraction took 2439.28 ms. Allocated memory was 203.4 MB in the beginning and 248.0 MB in the end (delta: 44.6 MB). Free memory was 137.9 MB in the beginning and 181.5 MB in the end (delta: -43.6 MB). Peak memory consumption was 939.6 kB. Max. memory is 7.1 GB. [2019-12-27 23:03:11,060 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 145.2 MB. Free memory was 120.4 MB in the beginning and 120.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 773.14 ms. Allocated memory was 145.2 MB in the beginning and 203.4 MB in the end (delta: 58.2 MB). Free memory was 99.7 MB in the beginning and 159.8 MB in the end (delta: -60.2 MB). Peak memory consumption was 19.9 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 46.74 ms. Allocated memory is still 203.4 MB. Free memory was 159.8 MB in the beginning and 157.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 25.64 ms. Allocated memory is still 203.4 MB. Free memory was 157.8 MB in the beginning and 156.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 438.23 ms. Allocated memory is still 203.4 MB. Free memory was 156.5 MB in the beginning and 137.9 MB in the end (delta: 18.7 MB). Peak memory consumption was 18.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2439.28 ms. Allocated memory was 203.4 MB in the beginning and 248.0 MB in the end (delta: 44.6 MB). Free memory was 137.9 MB in the beginning and 181.5 MB in the end (delta: -43.6 MB). Peak memory consumption was 939.6 kB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.3s, 49 ProgramPointsBefore, 15 ProgramPointsAfterwards, 43 TransitionsBefore, 11 TransitionsAfterwards, 234 CoEnabledTransitionPairs, 6 FixpointIterations, 13 TrivialSequentialCompositions, 20 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 1 ChoiceCompositions, 118 VarBasedMoverChecksPositive, 11 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 242 CheckedPairsTotal, 37 TotalNumberOfCompositions - PositiveResult [Line: 4]: 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 3 procedures, 43 locations, 1 error locations. Result: SAFE, OverallTime: 2.3s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 27 SDtfs, 19 SDslu, 26 SDs, 0 SdLazy, 29 SolverSat, 14 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred 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: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 29 NumberOfCodeBlocks, 29 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 25 ConstructedInterpolants, 0 QuantifiedInterpolants, 481 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...