/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/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe035_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-17 18:21:37,675 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-17 18:21:37,677 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-17 18:21:37,696 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-17 18:21:37,696 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-17 18:21:37,698 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-17 18:21:37,700 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-17 18:21:37,710 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-17 18:21:37,713 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-17 18:21:37,716 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-17 18:21:37,718 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-17 18:21:37,719 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-17 18:21:37,720 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-17 18:21:37,721 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-17 18:21:37,724 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-17 18:21:37,725 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-17 18:21:37,726 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-17 18:21:37,728 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-17 18:21:37,729 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-17 18:21:37,734 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-17 18:21:37,738 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-17 18:21:37,742 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-17 18:21:37,743 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-17 18:21:37,744 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-17 18:21:37,746 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-17 18:21:37,746 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-17 18:21:37,746 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-17 18:21:37,748 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-17 18:21:37,749 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-17 18:21:37,749 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-17 18:21:37,750 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-17 18:21:37,750 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-17 18:21:37,751 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-17 18:21:37,752 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-17 18:21:37,753 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-17 18:21:37,753 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-17 18:21:37,754 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-17 18:21:37,754 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-17 18:21:37,754 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-17 18:21:37,755 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-17 18:21:37,756 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-17 18:21:37,757 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-04-17 18:21:37,784 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-17 18:21:37,785 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-17 18:21:37,786 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-17 18:21:37,786 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-17 18:21:37,786 INFO L138 SettingsManager]: * Use SBE=true [2020-04-17 18:21:37,786 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-17 18:21:37,786 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-17 18:21:37,787 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-17 18:21:37,787 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-17 18:21:37,787 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-17 18:21:37,787 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-17 18:21:37,787 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-17 18:21:37,787 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-17 18:21:37,788 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-17 18:21:37,788 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-17 18:21:37,788 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-17 18:21:37,788 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-17 18:21:37,788 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-17 18:21:37,789 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-17 18:21:37,789 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-17 18:21:37,789 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-17 18:21:37,789 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-17 18:21:37,789 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-17 18:21:37,790 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-17 18:21:37,790 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-17 18:21:37,790 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-04-17 18:21:37,790 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-17 18:21:37,790 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-17 18:21:37,791 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-04-17 18:21:37,791 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-17 18:21:38,060 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-17 18:21:38,076 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-17 18:21:38,080 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-17 18:21:38,081 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-17 18:21:38,081 INFO L275 PluginConnector]: CDTParser initialized [2020-04-17 18:21:38,082 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe035_tso.oepc.i [2020-04-17 18:21:38,159 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/52c2f5c1f/c2f505e8b55349888228f33c770905ef/FLAG8dafc3498 [2020-04-17 18:21:38,689 INFO L306 CDTParser]: Found 1 translation units. [2020-04-17 18:21:38,689 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe035_tso.oepc.i [2020-04-17 18:21:38,720 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/52c2f5c1f/c2f505e8b55349888228f33c770905ef/FLAG8dafc3498 [2020-04-17 18:21:38,982 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/52c2f5c1f/c2f505e8b55349888228f33c770905ef [2020-04-17 18:21:38,991 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-17 18:21:39,010 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-17 18:21:39,012 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-17 18:21:39,012 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-17 18:21:39,015 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-17 18:21:39,016 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.04 06:21:38" (1/1) ... [2020-04-17 18:21:39,019 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@694972d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 06:21:39, skipping insertion in model container [2020-04-17 18:21:39,019 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.04 06:21:38" (1/1) ... [2020-04-17 18:21:39,027 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-17 18:21:39,089 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-17 18:21:39,578 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-17 18:21:39,589 INFO L203 MainTranslator]: Completed pre-run [2020-04-17 18:21:39,655 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-17 18:21:39,731 INFO L208 MainTranslator]: Completed translation [2020-04-17 18:21:39,731 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 06:21:39 WrapperNode [2020-04-17 18:21:39,732 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-17 18:21:39,732 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-17 18:21:39,733 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-17 18:21:39,733 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-17 18:21:39,742 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 06:21:39" (1/1) ... [2020-04-17 18:21:39,761 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 06:21:39" (1/1) ... [2020-04-17 18:21:39,782 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-17 18:21:39,783 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-17 18:21:39,783 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-17 18:21:39,783 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-17 18:21:39,790 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 06:21:39" (1/1) ... [2020-04-17 18:21:39,790 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 06:21:39" (1/1) ... [2020-04-17 18:21:39,793 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 06:21:39" (1/1) ... [2020-04-17 18:21:39,794 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 06:21:39" (1/1) ... [2020-04-17 18:21:39,801 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 06:21:39" (1/1) ... [2020-04-17 18:21:39,803 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 06:21:39" (1/1) ... [2020-04-17 18:21:39,805 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 06:21:39" (1/1) ... [2020-04-17 18:21:39,808 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-17 18:21:39,809 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-17 18:21:39,809 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-17 18:21:39,809 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-17 18:21:39,810 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 06:21:39" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-17 18:21:39,875 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-17 18:21:39,876 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-17 18:21:39,876 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-17 18:21:39,876 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-17 18:21:39,877 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-17 18:21:39,878 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-17 18:21:39,878 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-17 18:21:39,879 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-17 18:21:39,879 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-17 18:21:39,880 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-17 18:21:39,880 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-17 18:21:39,880 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-17 18:21:39,880 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-17 18:21:39,882 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-04-17 18:21:40,249 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-17 18:21:40,249 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-17 18:21:40,253 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.04 06:21:40 BoogieIcfgContainer [2020-04-17 18:21:40,253 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-17 18:21:40,254 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-17 18:21:40,254 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-17 18:21:40,257 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-17 18:21:40,257 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.04 06:21:38" (1/3) ... [2020-04-17 18:21:40,258 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b9c283b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.04 06:21:40, skipping insertion in model container [2020-04-17 18:21:40,258 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 06:21:39" (2/3) ... [2020-04-17 18:21:40,258 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b9c283b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.04 06:21:40, skipping insertion in model container [2020-04-17 18:21:40,259 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.04 06:21:40" (3/3) ... [2020-04-17 18:21:40,260 INFO L109 eAbstractionObserver]: Analyzing ICFG safe035_tso.oepc.i [2020-04-17 18:21:40,269 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-17 18:21:40,269 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-17 18:21:40,276 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-17 18:21:40,277 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-17 18:21:40,310 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:21:40,311 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:21:40,311 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:21:40,313 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:21:40,314 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:21:40,314 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:21:40,315 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:21:40,315 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:21:40,316 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:21:40,316 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:21:40,316 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:21:40,317 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:21:40,317 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:21:40,317 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:21:40,317 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:21:40,318 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:21:40,319 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:21:40,319 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:21:40,325 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:21:40,326 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:21:40,326 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:21:40,326 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:21:40,333 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:21:40,334 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:21:40,334 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:21:40,334 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:21:40,343 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:21:40,343 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:21:40,344 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:21:40,345 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:21:40,358 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-04-17 18:21:40,373 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-17 18:21:40,374 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-17 18:21:40,374 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-17 18:21:40,374 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-17 18:21:40,374 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-17 18:21:40,374 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-17 18:21:40,374 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-17 18:21:40,375 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-17 18:21:40,392 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 70 transitions, 155 flow [2020-04-17 18:21:40,395 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-04-17 18:21:40,442 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-04-17 18:21:40,442 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-17 18:21:40,446 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 49 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. [2020-04-17 18:21:40,449 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-04-17 18:21:40,468 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-04-17 18:21:40,469 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-17 18:21:40,469 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 49 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. [2020-04-17 18:21:40,472 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-04-17 18:21:40,473 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-04-17 18:21:42,137 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2020-04-17 18:21:42,324 WARN L192 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 40 [2020-04-17 18:21:42,473 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2414 [2020-04-17 18:21:42,473 INFO L214 etLargeBlockEncoding]: Total number of compositions: 56 [2020-04-17 18:21:42,477 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 21 transitions, 57 flow [2020-04-17 18:21:42,502 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-04-17 18:21:42,504 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-04-17 18:21:42,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-17 18:21:42,512 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 18:21:42,514 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 18:21:42,514 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 18:21:42,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 18:21:42,520 INFO L82 PathProgramCache]: Analyzing trace with hash 1626757645, now seen corresponding path program 1 times [2020-04-17 18:21:42,530 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 18:21:42,531 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458346908] [2020-04-17 18:21:42,531 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 18:21:42,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 18:21:42,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 18:21:42,740 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458346908] [2020-04-17 18:21:42,741 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 18:21:42,741 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-17 18:21:42,742 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280011748] [2020-04-17 18:21:42,746 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 18:21:42,747 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 18:21:42,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 18:21:42,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 18:21:42,765 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-04-17 18:21:42,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 18:21:42,819 INFO L93 Difference]: Finished difference Result 294 states and 849 transitions. [2020-04-17 18:21:42,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 18:21:42,821 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-04-17 18:21:42,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 18:21:42,838 INFO L225 Difference]: With dead ends: 294 [2020-04-17 18:21:42,838 INFO L226 Difference]: Without dead ends: 230 [2020-04-17 18:21:42,839 INFO L678 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 [2020-04-17 18:21:42,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2020-04-17 18:21:42,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 230. [2020-04-17 18:21:42,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 230 states. [2020-04-17 18:21:42,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 641 transitions. [2020-04-17 18:21:42,908 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 641 transitions. Word has length 8 [2020-04-17 18:21:42,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 18:21:42,909 INFO L479 AbstractCegarLoop]: Abstraction has 230 states and 641 transitions. [2020-04-17 18:21:42,910 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 18:21:42,910 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 641 transitions. [2020-04-17 18:21:42,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-17 18:21:42,911 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 18:21:42,911 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 18:21:42,912 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 18:21:42,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 18:21:42,912 INFO L82 PathProgramCache]: Analyzing trace with hash 113122264, now seen corresponding path program 1 times [2020-04-17 18:21:42,912 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 18:21:42,913 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725715899] [2020-04-17 18:21:42,913 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 18:21:42,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 18:21:42,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 18:21:42,988 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725715899] [2020-04-17 18:21:42,988 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 18:21:42,988 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-17 18:21:42,988 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715560239] [2020-04-17 18:21:42,990 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 18:21:42,990 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 18:21:42,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 18:21:42,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 18:21:42,991 INFO L87 Difference]: Start difference. First operand 230 states and 641 transitions. Second operand 3 states. [2020-04-17 18:21:43,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 18:21:43,009 INFO L93 Difference]: Finished difference Result 202 states and 544 transitions. [2020-04-17 18:21:43,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 18:21:43,010 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-04-17 18:21:43,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 18:21:43,013 INFO L225 Difference]: With dead ends: 202 [2020-04-17 18:21:43,013 INFO L226 Difference]: Without dead ends: 202 [2020-04-17 18:21:43,014 INFO L678 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 [2020-04-17 18:21:43,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-04-17 18:21:43,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2020-04-17 18:21:43,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-04-17 18:21:43,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 544 transitions. [2020-04-17 18:21:43,033 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 544 transitions. Word has length 9 [2020-04-17 18:21:43,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 18:21:43,033 INFO L479 AbstractCegarLoop]: Abstraction has 202 states and 544 transitions. [2020-04-17 18:21:43,033 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 18:21:43,033 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 544 transitions. [2020-04-17 18:21:43,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-17 18:21:43,035 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 18:21:43,035 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 18:21:43,036 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 18:21:43,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 18:21:43,036 INFO L82 PathProgramCache]: Analyzing trace with hash -54559497, now seen corresponding path program 1 times [2020-04-17 18:21:43,036 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 18:21:43,037 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13620047] [2020-04-17 18:21:43,037 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 18:21:43,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 18:21:43,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 18:21:43,094 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13620047] [2020-04-17 18:21:43,094 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 18:21:43,095 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 18:21:43,095 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562855131] [2020-04-17 18:21:43,095 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 18:21:43,095 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 18:21:43,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 18:21:43,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 18:21:43,096 INFO L87 Difference]: Start difference. First operand 202 states and 544 transitions. Second operand 3 states. [2020-04-17 18:21:43,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 18:21:43,114 INFO L93 Difference]: Finished difference Result 266 states and 704 transitions. [2020-04-17 18:21:43,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 18:21:43,115 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-04-17 18:21:43,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 18:21:43,117 INFO L225 Difference]: With dead ends: 266 [2020-04-17 18:21:43,117 INFO L226 Difference]: Without dead ends: 140 [2020-04-17 18:21:43,118 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 18:21:43,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-04-17 18:21:43,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2020-04-17 18:21:43,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-04-17 18:21:43,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 362 transitions. [2020-04-17 18:21:43,131 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 362 transitions. Word has length 10 [2020-04-17 18:21:43,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 18:21:43,132 INFO L479 AbstractCegarLoop]: Abstraction has 140 states and 362 transitions. [2020-04-17 18:21:43,132 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 18:21:43,132 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 362 transitions. [2020-04-17 18:21:43,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-17 18:21:43,133 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 18:21:43,133 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 18:21:43,134 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 18:21:43,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 18:21:43,134 INFO L82 PathProgramCache]: Analyzing trace with hash -1691362226, now seen corresponding path program 1 times [2020-04-17 18:21:43,134 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 18:21:43,135 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011715875] [2020-04-17 18:21:43,135 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 18:21:43,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 18:21:43,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 18:21:43,304 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011715875] [2020-04-17 18:21:43,305 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 18:21:43,305 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 18:21:43,305 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780078553] [2020-04-17 18:21:43,306 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 18:21:43,306 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 18:21:43,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 18:21:43,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 18:21:43,307 INFO L87 Difference]: Start difference. First operand 140 states and 362 transitions. Second operand 4 states. [2020-04-17 18:21:43,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 18:21:43,356 INFO L93 Difference]: Finished difference Result 165 states and 389 transitions. [2020-04-17 18:21:43,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-17 18:21:43,357 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-04-17 18:21:43,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 18:21:43,358 INFO L225 Difference]: With dead ends: 165 [2020-04-17 18:21:43,358 INFO L226 Difference]: Without dead ends: 113 [2020-04-17 18:21:43,359 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-17 18:21:43,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-04-17 18:21:43,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2020-04-17 18:21:43,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-04-17 18:21:43,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 257 transitions. [2020-04-17 18:21:43,367 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 257 transitions. Word has length 11 [2020-04-17 18:21:43,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 18:21:43,368 INFO L479 AbstractCegarLoop]: Abstraction has 113 states and 257 transitions. [2020-04-17 18:21:43,368 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 18:21:43,368 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 257 transitions. [2020-04-17 18:21:43,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-17 18:21:43,369 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 18:21:43,369 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 18:21:43,370 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 18:21:43,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 18:21:43,370 INFO L82 PathProgramCache]: Analyzing trace with hash -891715752, now seen corresponding path program 1 times [2020-04-17 18:21:43,370 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 18:21:43,371 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114291356] [2020-04-17 18:21:43,371 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 18:21:43,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 18:21:43,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 18:21:43,459 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114291356] [2020-04-17 18:21:43,459 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 18:21:43,460 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 18:21:43,460 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840633267] [2020-04-17 18:21:43,463 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-17 18:21:43,463 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 18:21:43,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-17 18:21:43,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-17 18:21:43,464 INFO L87 Difference]: Start difference. First operand 113 states and 257 transitions. Second operand 5 states. [2020-04-17 18:21:43,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 18:21:43,519 INFO L93 Difference]: Finished difference Result 111 states and 232 transitions. [2020-04-17 18:21:43,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-17 18:21:43,520 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-04-17 18:21:43,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 18:21:43,521 INFO L225 Difference]: With dead ends: 111 [2020-04-17 18:21:43,521 INFO L226 Difference]: Without dead ends: 80 [2020-04-17 18:21:43,521 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-04-17 18:21:43,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-04-17 18:21:43,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2020-04-17 18:21:43,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-04-17 18:21:43,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 159 transitions. [2020-04-17 18:21:43,535 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 159 transitions. Word has length 12 [2020-04-17 18:21:43,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 18:21:43,538 INFO L479 AbstractCegarLoop]: Abstraction has 80 states and 159 transitions. [2020-04-17 18:21:43,539 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-17 18:21:43,539 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 159 transitions. [2020-04-17 18:21:43,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-17 18:21:43,540 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 18:21:43,540 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 18:21:43,540 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 18:21:43,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 18:21:43,541 INFO L82 PathProgramCache]: Analyzing trace with hash 2053094164, now seen corresponding path program 1 times [2020-04-17 18:21:43,541 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 18:21:43,541 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747894649] [2020-04-17 18:21:43,541 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 18:21:43,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 18:21:43,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 18:21:43,648 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747894649] [2020-04-17 18:21:43,648 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 18:21:43,648 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-17 18:21:43,649 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076039904] [2020-04-17 18:21:43,649 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-04-17 18:21:43,649 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 18:21:43,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-17 18:21:43,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-04-17 18:21:43,650 INFO L87 Difference]: Start difference. First operand 80 states and 159 transitions. Second operand 6 states. [2020-04-17 18:21:43,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 18:21:43,719 INFO L93 Difference]: Finished difference Result 75 states and 147 transitions. [2020-04-17 18:21:43,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-04-17 18:21:43,720 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-04-17 18:21:43,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 18:21:43,721 INFO L225 Difference]: With dead ends: 75 [2020-04-17 18:21:43,721 INFO L226 Difference]: Without dead ends: 66 [2020-04-17 18:21:43,721 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-04-17 18:21:43,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-04-17 18:21:43,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2020-04-17 18:21:43,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-04-17 18:21:43,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 131 transitions. [2020-04-17 18:21:43,725 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 131 transitions. Word has length 14 [2020-04-17 18:21:43,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 18:21:43,726 INFO L479 AbstractCegarLoop]: Abstraction has 66 states and 131 transitions. [2020-04-17 18:21:43,726 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-04-17 18:21:43,726 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 131 transitions. [2020-04-17 18:21:43,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-17 18:21:43,727 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 18:21:43,727 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 18:21:43,727 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 18:21:43,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 18:21:43,727 INFO L82 PathProgramCache]: Analyzing trace with hash -913032564, now seen corresponding path program 1 times [2020-04-17 18:21:43,728 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 18:21:43,728 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265351813] [2020-04-17 18:21:43,728 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 18:21:43,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 18:21:43,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 18:21:43,788 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265351813] [2020-04-17 18:21:43,788 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 18:21:43,788 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 18:21:43,789 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761413209] [2020-04-17 18:21:43,789 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 18:21:43,789 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 18:21:43,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 18:21:43,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-04-17 18:21:43,790 INFO L87 Difference]: Start difference. First operand 66 states and 131 transitions. Second operand 4 states. [2020-04-17 18:21:43,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 18:21:43,813 INFO L93 Difference]: Finished difference Result 85 states and 165 transitions. [2020-04-17 18:21:43,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-17 18:21:43,814 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-04-17 18:21:43,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 18:21:43,815 INFO L225 Difference]: With dead ends: 85 [2020-04-17 18:21:43,815 INFO L226 Difference]: Without dead ends: 48 [2020-04-17 18:21:43,816 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-04-17 18:21:43,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-04-17 18:21:43,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2020-04-17 18:21:43,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-04-17 18:21:43,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 83 transitions. [2020-04-17 18:21:43,820 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 83 transitions. Word has length 17 [2020-04-17 18:21:43,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 18:21:43,820 INFO L479 AbstractCegarLoop]: Abstraction has 48 states and 83 transitions. [2020-04-17 18:21:43,820 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 18:21:43,820 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 83 transitions. [2020-04-17 18:21:43,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-17 18:21:43,821 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 18:21:43,821 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 18:21:43,822 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 18:21:43,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 18:21:43,822 INFO L82 PathProgramCache]: Analyzing trace with hash -1376526520, now seen corresponding path program 2 times [2020-04-17 18:21:43,822 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 18:21:43,823 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760297921] [2020-04-17 18:21:43,823 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 18:21:43,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 18:21:43,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 18:21:43,887 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760297921] [2020-04-17 18:21:43,887 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 18:21:43,888 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 18:21:43,888 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038399458] [2020-04-17 18:21:43,888 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 18:21:43,889 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 18:21:43,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 18:21:43,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 18:21:43,889 INFO L87 Difference]: Start difference. First operand 48 states and 83 transitions. Second operand 4 states. [2020-04-17 18:21:43,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 18:21:43,904 INFO L93 Difference]: Finished difference Result 47 states and 82 transitions. [2020-04-17 18:21:43,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-17 18:21:43,904 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-04-17 18:21:43,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 18:21:43,905 INFO L225 Difference]: With dead ends: 47 [2020-04-17 18:21:43,905 INFO L226 Difference]: Without dead ends: 0 [2020-04-17 18:21:43,906 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-17 18:21:43,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-17 18:21:43,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-17 18:21:43,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-17 18:21:43,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-17 18:21:43,907 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-04-17 18:21:43,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 18:21:43,907 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-17 18:21:43,907 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 18:21:43,907 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-17 18:21:43,908 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-17 18:21:43,912 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.04 06:21:43 BasicIcfg [2020-04-17 18:21:43,912 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-17 18:21:43,921 INFO L168 Benchmark]: Toolchain (without parser) took 4921.84 ms. Allocated memory was 145.8 MB in the beginning and 245.4 MB in the end (delta: 99.6 MB). Free memory was 102.7 MB in the beginning and 146.2 MB in the end (delta: -43.5 MB). Peak memory consumption was 56.1 MB. Max. memory is 7.1 GB. [2020-04-17 18:21:43,922 INFO L168 Benchmark]: CDTParser took 1.39 ms. Allocated memory is still 145.8 MB. Free memory was 122.1 MB in the beginning and 121.9 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-04-17 18:21:43,928 INFO L168 Benchmark]: CACSL2BoogieTranslator took 720.49 ms. Allocated memory was 145.8 MB in the beginning and 202.9 MB in the end (delta: 57.1 MB). Free memory was 100.6 MB in the beginning and 159.5 MB in the end (delta: -58.9 MB). Peak memory consumption was 21.6 MB. Max. memory is 7.1 GB. [2020-04-17 18:21:43,929 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.09 ms. Allocated memory is still 202.9 MB. Free memory was 159.5 MB in the beginning and 157.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-04-17 18:21:43,930 INFO L168 Benchmark]: Boogie Preprocessor took 25.63 ms. Allocated memory is still 202.9 MB. Free memory was 157.6 MB in the beginning and 156.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-04-17 18:21:43,930 INFO L168 Benchmark]: RCFGBuilder took 444.44 ms. Allocated memory is still 202.9 MB. Free memory was 156.2 MB in the beginning and 134.4 MB in the end (delta: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 7.1 GB. [2020-04-17 18:21:43,935 INFO L168 Benchmark]: TraceAbstraction took 3658.29 ms. Allocated memory was 202.9 MB in the beginning and 245.4 MB in the end (delta: 42.5 MB). Free memory was 133.7 MB in the beginning and 146.2 MB in the end (delta: -12.5 MB). Peak memory consumption was 30.0 MB. Max. memory is 7.1 GB. [2020-04-17 18:21:43,942 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.39 ms. Allocated memory is still 145.8 MB. Free memory was 122.1 MB in the beginning and 121.9 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 720.49 ms. Allocated memory was 145.8 MB in the beginning and 202.9 MB in the end (delta: 57.1 MB). Free memory was 100.6 MB in the beginning and 159.5 MB in the end (delta: -58.9 MB). Peak memory consumption was 21.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 50.09 ms. Allocated memory is still 202.9 MB. Free memory was 159.5 MB in the beginning and 157.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 25.63 ms. Allocated memory is still 202.9 MB. Free memory was 157.6 MB in the beginning and 156.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 444.44 ms. Allocated memory is still 202.9 MB. Free memory was 156.2 MB in the beginning and 134.4 MB in the end (delta: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3658.29 ms. Allocated memory was 202.9 MB in the beginning and 245.4 MB in the end (delta: 42.5 MB). Free memory was 133.7 MB in the beginning and 146.2 MB in the end (delta: -12.5 MB). Peak memory consumption was 30.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 2.0s, 78 ProgramPointsBefore, 31 ProgramPointsAfterwards, 70 TransitionsBefore, 21 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 7 FixpointIterations, 14 TrivialSequentialCompositions, 38 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 2 ChoiceCompositions, 643 VarBasedMoverChecksPositive, 31 VarBasedMoverChecksNegative, 11 SemBasedMoverChecksPositive, 34 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 0 MoverChecksTotal, 2414 CheckedPairsTotal, 56 TotalNumberOfCompositions - 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: 3.5s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.1s, HoareTripleCheckerStatistics: 156 SDtfs, 124 SDslu, 170 SDs, 0 SdLazy, 107 SolverSat, 18 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s 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, 8 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 98 NumberOfCodeBlocks, 98 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 90 ConstructedInterpolants, 0 QuantifiedInterpolants, 2892 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 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...