/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/safe032_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-17 18:17:11,708 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-17 18:17:11,711 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-17 18:17:11,729 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-17 18:17:11,730 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-17 18:17:11,732 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-17 18:17:11,734 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-17 18:17:11,747 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-17 18:17:11,750 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-17 18:17:11,750 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-17 18:17:11,751 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-17 18:17:11,754 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-17 18:17:11,754 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-17 18:17:11,757 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-17 18:17:11,759 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-17 18:17:11,761 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-17 18:17:11,762 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-17 18:17:11,763 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-17 18:17:11,765 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-17 18:17:11,771 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-17 18:17:11,773 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-17 18:17:11,778 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-17 18:17:11,779 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-17 18:17:11,779 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-17 18:17:11,781 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-17 18:17:11,782 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-17 18:17:11,782 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-17 18:17:11,783 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-17 18:17:11,783 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-17 18:17:11,784 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-17 18:17:11,784 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-17 18:17:11,785 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-17 18:17:11,785 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-17 18:17:11,786 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-17 18:17:11,787 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-17 18:17:11,787 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-17 18:17:11,788 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-17 18:17:11,788 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-17 18:17:11,788 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-17 18:17:11,789 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-17 18:17:11,790 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-17 18:17:11,791 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 18:17:11,805 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-17 18:17:11,805 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-17 18:17:11,806 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-17 18:17:11,806 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-17 18:17:11,807 INFO L138 SettingsManager]: * Use SBE=true [2020-04-17 18:17:11,807 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-17 18:17:11,807 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-17 18:17:11,807 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-17 18:17:11,807 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-17 18:17:11,808 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-17 18:17:11,808 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-17 18:17:11,808 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-17 18:17:11,808 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-17 18:17:11,808 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-17 18:17:11,809 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-17 18:17:11,809 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-17 18:17:11,809 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-17 18:17:11,809 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-17 18:17:11,809 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-17 18:17:11,810 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-17 18:17:11,810 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-17 18:17:11,810 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-17 18:17:11,810 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-17 18:17:11,810 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-17 18:17:11,811 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-17 18:17:11,811 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-04-17 18:17:11,811 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-17 18:17:11,811 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-17 18:17:11,811 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-04-17 18:17:11,812 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-17 18:17:12,093 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-17 18:17:12,109 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-17 18:17:12,113 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-17 18:17:12,114 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-17 18:17:12,114 INFO L275 PluginConnector]: CDTParser initialized [2020-04-17 18:17:12,115 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe032_tso.oepc.i [2020-04-17 18:17:12,190 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bdafd64e7/a442eac5ba45436e9e9a74b54b7ae019/FLAGe4dbf2922 [2020-04-17 18:17:12,791 INFO L306 CDTParser]: Found 1 translation units. [2020-04-17 18:17:12,792 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe032_tso.oepc.i [2020-04-17 18:17:12,814 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bdafd64e7/a442eac5ba45436e9e9a74b54b7ae019/FLAGe4dbf2922 [2020-04-17 18:17:13,109 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bdafd64e7/a442eac5ba45436e9e9a74b54b7ae019 [2020-04-17 18:17:13,118 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-17 18:17:13,135 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-17 18:17:13,136 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-17 18:17:13,136 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-17 18:17:13,139 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-17 18:17:13,140 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.04 06:17:13" (1/1) ... [2020-04-17 18:17:13,143 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a6de72f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 06:17:13, skipping insertion in model container [2020-04-17 18:17:13,144 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.04 06:17:13" (1/1) ... [2020-04-17 18:17:13,152 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-17 18:17:13,203 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-17 18:17:13,684 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-17 18:17:13,699 INFO L203 MainTranslator]: Completed pre-run [2020-04-17 18:17:13,770 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-17 18:17:13,850 INFO L208 MainTranslator]: Completed translation [2020-04-17 18:17:13,851 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 06:17:13 WrapperNode [2020-04-17 18:17:13,851 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-17 18:17:13,852 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-17 18:17:13,852 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-17 18:17:13,852 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-17 18:17:13,861 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 06:17:13" (1/1) ... [2020-04-17 18:17:13,885 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 06:17:13" (1/1) ... [2020-04-17 18:17:13,909 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-17 18:17:13,909 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-17 18:17:13,909 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-17 18:17:13,909 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-17 18:17:13,919 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 06:17:13" (1/1) ... [2020-04-17 18:17:13,920 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 06:17:13" (1/1) ... [2020-04-17 18:17:13,923 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 06:17:13" (1/1) ... [2020-04-17 18:17:13,923 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 06:17:13" (1/1) ... [2020-04-17 18:17:13,930 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 06:17:13" (1/1) ... [2020-04-17 18:17:13,932 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 06:17:13" (1/1) ... [2020-04-17 18:17:13,935 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 06:17:13" (1/1) ... [2020-04-17 18:17:13,942 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-17 18:17:13,943 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-17 18:17:13,943 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-17 18:17:13,943 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-17 18:17:13,944 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 06:17:13" (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 18:17:14,014 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-17 18:17:14,015 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-17 18:17:14,015 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-17 18:17:14,015 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-17 18:17:14,015 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-17 18:17:14,015 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-17 18:17:14,015 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-17 18:17:14,016 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-17 18:17:14,016 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-17 18:17:14,016 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-17 18:17:14,016 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-17 18:17:14,016 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-17 18:17:14,016 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-17 18:17:14,018 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 18:17:14,424 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-17 18:17:14,425 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-17 18:17:14,429 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.04 06:17:14 BoogieIcfgContainer [2020-04-17 18:17:14,429 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-17 18:17:14,430 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-17 18:17:14,431 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-17 18:17:14,434 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-17 18:17:14,434 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.04 06:17:13" (1/3) ... [2020-04-17 18:17:14,435 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a587a8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.04 06:17:14, skipping insertion in model container [2020-04-17 18:17:14,436 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 06:17:13" (2/3) ... [2020-04-17 18:17:14,436 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a587a8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.04 06:17:14, skipping insertion in model container [2020-04-17 18:17:14,436 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.04 06:17:14" (3/3) ... [2020-04-17 18:17:14,438 INFO L109 eAbstractionObserver]: Analyzing ICFG safe032_tso.oepc.i [2020-04-17 18:17:14,448 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-17 18:17:14,448 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-17 18:17:14,455 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-17 18:17:14,456 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-17 18:17:14,489 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:17:14,489 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:17:14,490 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:17:14,492 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:17:14,493 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:17:14,493 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:17:14,493 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:17:14,494 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:17:14,494 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:17:14,494 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:17:14,495 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:17:14,495 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:17:14,496 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:17:14,496 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:17:14,496 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:17:14,496 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:17:14,497 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:17:14,498 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:17:14,504 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:17:14,504 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:17:14,504 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:17:14,505 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:17:14,521 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:17:14,522 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:17:14,523 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:17:14,523 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:17:14,526 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:17:14,526 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:17:14,527 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:17:14,527 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:17:14,552 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-04-17 18:17:14,571 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-17 18:17:14,572 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-17 18:17:14,572 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-17 18:17:14,572 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-17 18:17:14,572 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-17 18:17:14,572 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-17 18:17:14,573 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-17 18:17:14,573 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-17 18:17:14,589 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 77 places, 69 transitions, 153 flow [2020-04-17 18:17:14,591 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 77 places, 69 transitions, 153 flow [2020-04-17 18:17:14,636 INFO L129 PetriNetUnfolder]: 2/66 cut-off events. [2020-04-17 18:17:14,637 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-17 18:17:14,645 INFO L80 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 66 events. 2/66 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. 0/63 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-04-17 18:17:14,649 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 77 places, 69 transitions, 153 flow [2020-04-17 18:17:14,686 INFO L129 PetriNetUnfolder]: 2/66 cut-off events. [2020-04-17 18:17:14,686 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-17 18:17:14,687 INFO L80 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 66 events. 2/66 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. 0/63 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-04-17 18:17:14,689 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-04-17 18:17:14,690 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-04-17 18:17:16,262 WARN L192 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 47 [2020-04-17 18:17:16,339 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2365 [2020-04-17 18:17:16,339 INFO L214 etLargeBlockEncoding]: Total number of compositions: 53 [2020-04-17 18:17:16,343 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 23 transitions, 61 flow [2020-04-17 18:17:16,371 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 362 states. [2020-04-17 18:17:16,373 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states. [2020-04-17 18:17:16,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-17 18:17:16,381 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 18:17:16,382 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 18:17:16,382 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 18:17:16,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 18:17:16,388 INFO L82 PathProgramCache]: Analyzing trace with hash -589225259, now seen corresponding path program 1 times [2020-04-17 18:17:16,397 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 18:17:16,397 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543458927] [2020-04-17 18:17:16,397 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 18:17:16,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 18:17:16,653 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 18:17:16,654 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543458927] [2020-04-17 18:17:16,656 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 18:17:16,656 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 18:17:16,657 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177517291] [2020-04-17 18:17:16,662 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-04-17 18:17:16,662 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 18:17:16,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-04-17 18:17:16,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-04-17 18:17:16,681 INFO L87 Difference]: Start difference. First operand 362 states. Second operand 2 states. [2020-04-17 18:17:16,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 18:17:16,730 INFO L93 Difference]: Finished difference Result 362 states and 1072 transitions. [2020-04-17 18:17:16,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-04-17 18:17:16,733 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-04-17 18:17:16,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 18:17:16,771 INFO L225 Difference]: With dead ends: 362 [2020-04-17 18:17:16,772 INFO L226 Difference]: Without dead ends: 298 [2020-04-17 18:17:16,775 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-04-17 18:17:16,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-04-17 18:17:16,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2020-04-17 18:17:16,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2020-04-17 18:17:16,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 864 transitions. [2020-04-17 18:17:16,846 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 864 transitions. Word has length 8 [2020-04-17 18:17:16,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 18:17:16,847 INFO L479 AbstractCegarLoop]: Abstraction has 298 states and 864 transitions. [2020-04-17 18:17:16,847 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-04-17 18:17:16,848 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 864 transitions. [2020-04-17 18:17:16,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-17 18:17:16,850 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 18:17:16,851 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 18:17:16,851 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 18:17:16,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 18:17:16,851 INFO L82 PathProgramCache]: Analyzing trace with hash -1086118353, now seen corresponding path program 1 times [2020-04-17 18:17:16,852 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 18:17:16,852 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122055665] [2020-04-17 18:17:16,852 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 18:17:16,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 18:17:16,939 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 18:17:16,939 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122055665] [2020-04-17 18:17:16,940 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 18:17:16,940 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 18:17:16,940 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945678789] [2020-04-17 18:17:16,942 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 18:17:16,942 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 18:17:16,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 18:17:16,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 18:17:16,943 INFO L87 Difference]: Start difference. First operand 298 states and 864 transitions. Second operand 3 states. [2020-04-17 18:17:16,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 18:17:16,973 INFO L93 Difference]: Finished difference Result 217 states and 540 transitions. [2020-04-17 18:17:16,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 18:17:16,975 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-04-17 18:17:16,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 18:17:16,977 INFO L225 Difference]: With dead ends: 217 [2020-04-17 18:17:16,978 INFO L226 Difference]: Without dead ends: 217 [2020-04-17 18:17:16,981 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 18:17:16,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2020-04-17 18:17:17,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 217. [2020-04-17 18:17:17,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217 states. [2020-04-17 18:17:17,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 540 transitions. [2020-04-17 18:17:17,015 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 540 transitions. Word has length 9 [2020-04-17 18:17:17,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 18:17:17,015 INFO L479 AbstractCegarLoop]: Abstraction has 217 states and 540 transitions. [2020-04-17 18:17:17,018 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 18:17:17,018 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 540 transitions. [2020-04-17 18:17:17,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-17 18:17:17,021 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 18:17:17,021 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 18:17:17,021 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 18:17:17,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 18:17:17,021 INFO L82 PathProgramCache]: Analyzing trace with hash -954674037, now seen corresponding path program 1 times [2020-04-17 18:17:17,022 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 18:17:17,022 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947964264] [2020-04-17 18:17:17,022 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 18:17:17,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 18:17:17,116 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 18:17:17,117 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947964264] [2020-04-17 18:17:17,117 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 18:17:17,117 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 18:17:17,117 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048936491] [2020-04-17 18:17:17,118 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 18:17:17,118 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 18:17:17,118 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 18:17:17,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-04-17 18:17:17,119 INFO L87 Difference]: Start difference. First operand 217 states and 540 transitions. Second operand 4 states. [2020-04-17 18:17:17,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 18:17:17,142 INFO L93 Difference]: Finished difference Result 136 states and 297 transitions. [2020-04-17 18:17:17,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-17 18:17:17,143 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-04-17 18:17:17,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 18:17:17,144 INFO L225 Difference]: With dead ends: 136 [2020-04-17 18:17:17,144 INFO L226 Difference]: Without dead ends: 136 [2020-04-17 18:17:17,145 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 18:17:17,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-04-17 18:17:17,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 136. [2020-04-17 18:17:17,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-04-17 18:17:17,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 297 transitions. [2020-04-17 18:17:17,152 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 297 transitions. Word has length 12 [2020-04-17 18:17:17,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 18:17:17,153 INFO L479 AbstractCegarLoop]: Abstraction has 136 states and 297 transitions. [2020-04-17 18:17:17,153 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 18:17:17,153 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 297 transitions. [2020-04-17 18:17:17,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-17 18:17:17,155 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 18:17:17,155 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 18:17:17,155 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 18:17:17,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 18:17:17,155 INFO L82 PathProgramCache]: Analyzing trace with hash -1044268816, now seen corresponding path program 1 times [2020-04-17 18:17:17,156 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 18:17:17,156 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529372516] [2020-04-17 18:17:17,156 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 18:17:17,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 18:17:17,250 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 18:17:17,250 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529372516] [2020-04-17 18:17:17,250 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 18:17:17,251 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-17 18:17:17,251 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877475363] [2020-04-17 18:17:17,251 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-17 18:17:17,251 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 18:17:17,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-17 18:17:17,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-04-17 18:17:17,254 INFO L87 Difference]: Start difference. First operand 136 states and 297 transitions. Second operand 5 states. [2020-04-17 18:17:17,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 18:17:17,278 INFO L93 Difference]: Finished difference Result 109 states and 243 transitions. [2020-04-17 18:17:17,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-17 18:17:17,279 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-04-17 18:17:17,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 18:17:17,280 INFO L225 Difference]: With dead ends: 109 [2020-04-17 18:17:17,280 INFO L226 Difference]: Without dead ends: 109 [2020-04-17 18:17:17,281 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-04-17 18:17:17,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-04-17 18:17:17,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2020-04-17 18:17:17,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-04-17 18:17:17,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 243 transitions. [2020-04-17 18:17:17,286 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 243 transitions. Word has length 15 [2020-04-17 18:17:17,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 18:17:17,286 INFO L479 AbstractCegarLoop]: Abstraction has 109 states and 243 transitions. [2020-04-17 18:17:17,286 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-17 18:17:17,286 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 243 transitions. [2020-04-17 18:17:17,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-04-17 18:17:17,287 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 18:17:17,288 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 18:17:17,288 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 18:17:17,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 18:17:17,288 INFO L82 PathProgramCache]: Analyzing trace with hash 1052552835, now seen corresponding path program 1 times [2020-04-17 18:17:17,288 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 18:17:17,289 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438922892] [2020-04-17 18:17:17,289 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 18:17:17,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 18:17:17,380 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 18:17:17,380 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438922892] [2020-04-17 18:17:17,380 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 18:17:17,381 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-17 18:17:17,381 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198606757] [2020-04-17 18:17:17,381 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-17 18:17:17,381 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 18:17:17,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-17 18:17:17,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-17 18:17:17,382 INFO L87 Difference]: Start difference. First operand 109 states and 243 transitions. Second operand 5 states. [2020-04-17 18:17:17,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 18:17:17,424 INFO L93 Difference]: Finished difference Result 174 states and 369 transitions. [2020-04-17 18:17:17,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-17 18:17:17,425 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-04-17 18:17:17,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 18:17:17,426 INFO L225 Difference]: With dead ends: 174 [2020-04-17 18:17:17,426 INFO L226 Difference]: Without dead ends: 136 [2020-04-17 18:17:17,426 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-04-17 18:17:17,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-04-17 18:17:17,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 109. [2020-04-17 18:17:17,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-04-17 18:17:17,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 237 transitions. [2020-04-17 18:17:17,439 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 237 transitions. Word has length 18 [2020-04-17 18:17:17,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 18:17:17,440 INFO L479 AbstractCegarLoop]: Abstraction has 109 states and 237 transitions. [2020-04-17 18:17:17,440 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-17 18:17:17,440 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 237 transitions. [2020-04-17 18:17:17,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-04-17 18:17:17,441 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 18:17:17,441 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 18:17:17,441 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 18:17:17,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 18:17:17,442 INFO L82 PathProgramCache]: Analyzing trace with hash -457536705, now seen corresponding path program 2 times [2020-04-17 18:17:17,442 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 18:17:17,442 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900033793] [2020-04-17 18:17:17,442 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 18:17:17,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 18:17:17,494 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 18:17:17,494 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900033793] [2020-04-17 18:17:17,494 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 18:17:17,495 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-17 18:17:17,495 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625293494] [2020-04-17 18:17:17,495 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-17 18:17:17,495 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 18:17:17,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-17 18:17:17,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-17 18:17:17,496 INFO L87 Difference]: Start difference. First operand 109 states and 237 transitions. Second operand 5 states. [2020-04-17 18:17:17,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 18:17:17,576 INFO L93 Difference]: Finished difference Result 187 states and 381 transitions. [2020-04-17 18:17:17,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-04-17 18:17:17,577 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-04-17 18:17:17,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 18:17:17,577 INFO L225 Difference]: With dead ends: 187 [2020-04-17 18:17:17,578 INFO L226 Difference]: Without dead ends: 61 [2020-04-17 18:17:17,578 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-04-17 18:17:17,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-04-17 18:17:17,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2020-04-17 18:17:17,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-04-17 18:17:17,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 114 transitions. [2020-04-17 18:17:17,582 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 114 transitions. Word has length 18 [2020-04-17 18:17:17,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 18:17:17,582 INFO L479 AbstractCegarLoop]: Abstraction has 61 states and 114 transitions. [2020-04-17 18:17:17,583 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-17 18:17:17,583 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 114 transitions. [2020-04-17 18:17:17,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-04-17 18:17:17,583 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 18:17:17,584 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 18:17:17,584 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 18:17:17,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 18:17:17,584 INFO L82 PathProgramCache]: Analyzing trace with hash -1548207031, now seen corresponding path program 3 times [2020-04-17 18:17:17,585 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 18:17:17,586 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502438314] [2020-04-17 18:17:17,586 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 18:17:17,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 18:17:17,675 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 18:17:17,676 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502438314] [2020-04-17 18:17:17,676 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 18:17:17,676 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-17 18:17:17,676 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445385943] [2020-04-17 18:17:17,677 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-17 18:17:17,677 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 18:17:17,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-17 18:17:17,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-17 18:17:17,678 INFO L87 Difference]: Start difference. First operand 61 states and 114 transitions. Second operand 5 states. [2020-04-17 18:17:17,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 18:17:17,702 INFO L93 Difference]: Finished difference Result 75 states and 136 transitions. [2020-04-17 18:17:17,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-17 18:17:17,702 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-04-17 18:17:17,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 18:17:17,703 INFO L225 Difference]: With dead ends: 75 [2020-04-17 18:17:17,703 INFO L226 Difference]: Without dead ends: 55 [2020-04-17 18:17:17,704 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-04-17 18:17:17,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-04-17 18:17:17,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2020-04-17 18:17:17,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-04-17 18:17:17,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 99 transitions. [2020-04-17 18:17:17,706 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 99 transitions. Word has length 18 [2020-04-17 18:17:17,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 18:17:17,707 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 99 transitions. [2020-04-17 18:17:17,707 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-17 18:17:17,707 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 99 transitions. [2020-04-17 18:17:17,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-04-17 18:17:17,707 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 18:17:17,708 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 18:17:17,708 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 18:17:17,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 18:17:17,708 INFO L82 PathProgramCache]: Analyzing trace with hash -1271535879, now seen corresponding path program 4 times [2020-04-17 18:17:17,708 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 18:17:17,709 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057313224] [2020-04-17 18:17:17,709 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 18:17:17,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 18:17:17,765 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 18:17:17,765 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057313224] [2020-04-17 18:17:17,765 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 18:17:17,766 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 18:17:17,766 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542641399] [2020-04-17 18:17:17,766 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 18:17:17,767 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 18:17:17,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 18:17:17,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 18:17:17,767 INFO L87 Difference]: Start difference. First operand 55 states and 99 transitions. Second operand 4 states. [2020-04-17 18:17:17,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 18:17:17,781 INFO L93 Difference]: Finished difference Result 54 states and 98 transitions. [2020-04-17 18:17:17,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-17 18:17:17,781 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-04-17 18:17:17,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 18:17:17,781 INFO L225 Difference]: With dead ends: 54 [2020-04-17 18:17:17,782 INFO L226 Difference]: Without dead ends: 0 [2020-04-17 18:17:17,782 INFO L678 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 [2020-04-17 18:17:17,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-17 18:17:17,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-17 18:17:17,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-17 18:17:17,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-17 18:17:17,783 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2020-04-17 18:17:17,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 18:17:17,783 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-17 18:17:17,783 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 18:17:17,784 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-17 18:17:17,784 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-17 18:17:17,788 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.04 06:17:17 BasicIcfg [2020-04-17 18:17:17,788 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-17 18:17:17,790 INFO L168 Benchmark]: Toolchain (without parser) took 4670.81 ms. Allocated memory was 144.7 MB in the beginning and 249.6 MB in the end (delta: 104.9 MB). Free memory was 100.1 MB in the beginning and 211.0 MB in the end (delta: -110.9 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-04-17 18:17:17,791 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 144.7 MB. Free memory was 119.8 MB in the beginning and 119.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-04-17 18:17:17,792 INFO L168 Benchmark]: CACSL2BoogieTranslator took 715.56 ms. Allocated memory was 144.7 MB in the beginning and 201.9 MB in the end (delta: 57.1 MB). Free memory was 98.2 MB in the beginning and 158.5 MB in the end (delta: -60.3 MB). Peak memory consumption was 20.0 MB. Max. memory is 7.1 GB. [2020-04-17 18:17:17,793 INFO L168 Benchmark]: Boogie Procedure Inliner took 57.15 ms. Allocated memory is still 201.9 MB. Free memory was 158.5 MB in the beginning and 156.3 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 7.1 GB. [2020-04-17 18:17:17,793 INFO L168 Benchmark]: Boogie Preprocessor took 33.28 ms. Allocated memory is still 201.9 MB. Free memory was 156.3 MB in the beginning and 154.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-04-17 18:17:17,794 INFO L168 Benchmark]: RCFGBuilder took 486.66 ms. Allocated memory is still 201.9 MB. Free memory was 154.9 MB in the beginning and 132.5 MB in the end (delta: 22.5 MB). Peak memory consumption was 22.5 MB. Max. memory is 7.1 GB. [2020-04-17 18:17:17,795 INFO L168 Benchmark]: TraceAbstraction took 3357.79 ms. Allocated memory was 201.9 MB in the beginning and 249.6 MB in the end (delta: 47.7 MB). Free memory was 132.5 MB in the beginning and 211.0 MB in the end (delta: -78.5 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-04-17 18:17:17,799 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 144.7 MB. Free memory was 119.8 MB in the beginning and 119.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 715.56 ms. Allocated memory was 144.7 MB in the beginning and 201.9 MB in the end (delta: 57.1 MB). Free memory was 98.2 MB in the beginning and 158.5 MB in the end (delta: -60.3 MB). Peak memory consumption was 20.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 57.15 ms. Allocated memory is still 201.9 MB. Free memory was 158.5 MB in the beginning and 156.3 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 33.28 ms. Allocated memory is still 201.9 MB. Free memory was 156.3 MB in the beginning and 154.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 486.66 ms. Allocated memory is still 201.9 MB. Free memory was 154.9 MB in the beginning and 132.5 MB in the end (delta: 22.5 MB). Peak memory consumption was 22.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3357.79 ms. Allocated memory was 201.9 MB in the beginning and 249.6 MB in the end (delta: 47.7 MB). Free memory was 132.5 MB in the beginning and 211.0 MB in the end (delta: -78.5 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.7s, 77 ProgramPointsBefore, 32 ProgramPointsAfterwards, 69 TransitionsBefore, 23 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 6 FixpointIterations, 13 TrivialSequentialCompositions, 34 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 1 ChoiceCompositions, 648 VarBasedMoverChecksPositive, 37 VarBasedMoverChecksNegative, 12 SemBasedMoverChecksPositive, 36 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 0 MoverChecksTotal, 2365 CheckedPairsTotal, 53 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, 68 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.2s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.7s, HoareTripleCheckerStatistics: 160 SDtfs, 101 SDslu, 231 SDs, 0 SdLazy, 86 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 34 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=362occurred 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, 27 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 116 NumberOfCodeBlocks, 116 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 108 ConstructedInterpolants, 0 QuantifiedInterpolants, 4188 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...