/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf -i ../../../trunk/examples/svcomp/pthread-divine/condvar.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-7bb8cbd [2020-10-16 02:20:24,961 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-16 02:20:24,964 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-16 02:20:25,011 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-16 02:20:25,012 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-16 02:20:25,013 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-16 02:20:25,014 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-16 02:20:25,016 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-16 02:20:25,018 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-16 02:20:25,019 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-16 02:20:25,020 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-16 02:20:25,022 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-16 02:20:25,022 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-16 02:20:25,023 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-16 02:20:25,024 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-16 02:20:25,025 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-16 02:20:25,026 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-16 02:20:25,027 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-16 02:20:25,029 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-16 02:20:25,031 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-16 02:20:25,033 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-16 02:20:25,034 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-16 02:20:25,035 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-16 02:20:25,036 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-16 02:20:25,042 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-16 02:20:25,045 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-16 02:20:25,046 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-16 02:20:25,047 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-16 02:20:25,047 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-16 02:20:25,048 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-16 02:20:25,048 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-16 02:20:25,049 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-16 02:20:25,049 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-16 02:20:25,050 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-16 02:20:25,051 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-16 02:20:25,051 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-16 02:20:25,052 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf [2020-10-16 02:20:25,075 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-16 02:20:25,076 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-16 02:20:25,077 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-16 02:20:25,077 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-16 02:20:25,078 INFO L138 SettingsManager]: * Use SBE=true [2020-10-16 02:20:25,078 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-16 02:20:25,078 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-16 02:20:25,078 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-16 02:20:25,078 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-16 02:20:25,079 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-16 02:20:25,079 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-16 02:20:25,079 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-16 02:20:25,079 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-16 02:20:25,079 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-16 02:20:25,079 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-16 02:20:25,080 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-16 02:20:25,080 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-16 02:20:25,080 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-16 02:20:25,080 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-16 02:20:25,080 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-16 02:20:25,081 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-16 02:20:25,081 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 02:20:25,081 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-16 02:20:25,081 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-16 02:20:25,081 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-16 02:20:25,082 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-16 02:20:25,082 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-16 02:20:25,082 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2020-10-16 02:20:25,082 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-16 02:20:25,387 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-16 02:20:25,406 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-16 02:20:25,410 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-16 02:20:25,412 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-16 02:20:25,413 INFO L275 PluginConnector]: CDTParser initialized [2020-10-16 02:20:25,413 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-divine/condvar.i [2020-10-16 02:20:25,492 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c6912af02/4f5a74204539415ca09483971c55d91c/FLAG1ba6c6c8c [2020-10-16 02:20:26,051 INFO L306 CDTParser]: Found 1 translation units. [2020-10-16 02:20:26,055 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-divine/condvar.i [2020-10-16 02:20:26,082 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c6912af02/4f5a74204539415ca09483971c55d91c/FLAG1ba6c6c8c [2020-10-16 02:20:26,315 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c6912af02/4f5a74204539415ca09483971c55d91c [2020-10-16 02:20:26,326 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-16 02:20:26,328 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-16 02:20:26,329 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-16 02:20:26,329 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-16 02:20:26,333 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-16 02:20:26,334 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:20:26" (1/1) ... [2020-10-16 02:20:26,338 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8fdbcaf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:20:26, skipping insertion in model container [2020-10-16 02:20:26,338 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:20:26" (1/1) ... [2020-10-16 02:20:26,347 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-16 02:20:26,409 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-16 02:20:26,623 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2020-10-16 02:20:26,891 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 02:20:26,911 INFO L203 MainTranslator]: Completed pre-run [2020-10-16 02:20:26,928 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2020-10-16 02:20:26,955 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 02:20:27,045 INFO L208 MainTranslator]: Completed translation [2020-10-16 02:20:27,046 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:20:27 WrapperNode [2020-10-16 02:20:27,046 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-16 02:20:27,047 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-16 02:20:27,047 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-16 02:20:27,047 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-16 02:20:27,057 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:20:27" (1/1) ... [2020-10-16 02:20:27,075 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:20:27" (1/1) ... [2020-10-16 02:20:27,099 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-16 02:20:27,099 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-16 02:20:27,100 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-16 02:20:27,100 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-16 02:20:27,110 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:20:27" (1/1) ... [2020-10-16 02:20:27,110 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:20:27" (1/1) ... [2020-10-16 02:20:27,114 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:20:27" (1/1) ... [2020-10-16 02:20:27,114 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:20:27" (1/1) ... [2020-10-16 02:20:27,120 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:20:27" (1/1) ... [2020-10-16 02:20:27,125 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:20:27" (1/1) ... [2020-10-16 02:20:27,127 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:20:27" (1/1) ... [2020-10-16 02:20:27,130 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-16 02:20:27,130 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-16 02:20:27,131 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-16 02:20:27,131 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-16 02:20:27,132 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:20:27" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 02:20:27,204 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-16 02:20:27,205 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-16 02:20:27,205 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2020-10-16 02:20:27,205 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-16 02:20:27,205 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-16 02:20:27,205 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-16 02:20:27,206 INFO L130 BoogieDeclarations]: Found specification of procedure thread [2020-10-16 02:20:27,206 INFO L138 BoogieDeclarations]: Found implementation of procedure thread [2020-10-16 02:20:27,206 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-16 02:20:27,206 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-16 02:20:27,208 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-16 02:20:27,689 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-16 02:20:27,689 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-10-16 02:20:27,691 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:20:27 BoogieIcfgContainer [2020-10-16 02:20:27,691 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-16 02:20:27,693 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-16 02:20:27,693 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-16 02:20:27,697 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-16 02:20:27,697 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 02:20:26" (1/3) ... [2020-10-16 02:20:27,698 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a93bb12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:20:27, skipping insertion in model container [2020-10-16 02:20:27,698 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:20:27" (2/3) ... [2020-10-16 02:20:27,699 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a93bb12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:20:27, skipping insertion in model container [2020-10-16 02:20:27,699 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:20:27" (3/3) ... [2020-10-16 02:20:27,701 INFO L111 eAbstractionObserver]: Analyzing ICFG condvar.i [2020-10-16 02:20:27,713 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-16 02:20:27,722 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-16 02:20:27,723 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-16 02:20:27,748 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:20:27,748 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:20:27,749 WARN L313 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:20:27,749 WARN L313 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:20:27,749 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:20:27,750 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:20:27,750 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:20:27,751 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:20:27,751 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:20:27,751 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:20:27,755 WARN L313 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:20:27,755 WARN L313 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:20:27,755 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:20:27,756 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:20:27,756 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:20:27,756 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:20:27,781 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-10-16 02:20:27,805 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 02:20:27,805 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-16 02:20:27,805 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-16 02:20:27,805 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 02:20:27,806 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 02:20:27,806 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 02:20:27,806 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 02:20:27,806 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 02:20:27,820 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 58 places, 59 transitions, 126 flow [2020-10-16 02:20:27,859 INFO L129 PetriNetUnfolder]: 5/58 cut-off events. [2020-10-16 02:20:27,859 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2020-10-16 02:20:27,864 INFO L80 FinitePrefix]: Finished finitePrefix Result has 63 conditions, 58 events. 5/58 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 57 event pairs, 0 based on Foata normal form. 0/52 useless extension candidates. Maximal degree in co-relation 27. Up to 2 conditions per place. [2020-10-16 02:20:27,865 INFO L82 GeneralOperation]: Start removeDead. Operand has 58 places, 59 transitions, 126 flow [2020-10-16 02:20:27,871 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 51 places, 52 transitions, 107 flow [2020-10-16 02:20:27,874 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-16 02:20:27,877 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 51 places, 52 transitions, 107 flow [2020-10-16 02:20:27,880 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 51 places, 52 transitions, 107 flow [2020-10-16 02:20:27,881 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 51 places, 52 transitions, 107 flow [2020-10-16 02:20:27,897 INFO L129 PetriNetUnfolder]: 5/52 cut-off events. [2020-10-16 02:20:27,897 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 02:20:27,898 INFO L80 FinitePrefix]: Finished finitePrefix Result has 56 conditions, 52 events. 5/52 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 58 event pairs, 0 based on Foata normal form. 0/46 useless extension candidates. Maximal degree in co-relation 27. Up to 2 conditions per place. [2020-10-16 02:20:27,899 INFO L117 LiptonReduction]: Number of co-enabled transitions 352 [2020-10-16 02:20:29,216 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 80 [2020-10-16 02:20:29,606 WARN L193 SmtUtils]: Spent 305.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 101 [2020-10-16 02:20:29,742 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-10-16 02:20:29,745 INFO L132 LiptonReduction]: Checked pairs total: 291 [2020-10-16 02:20:29,746 INFO L134 LiptonReduction]: Total number of compositions: 49 [2020-10-16 02:20:29,749 INFO L182 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1878 [2020-10-16 02:20:29,756 INFO L129 PetriNetUnfolder]: 2/8 cut-off events. [2020-10-16 02:20:29,757 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 02:20:29,757 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 02:20:29,758 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2020-10-16 02:20:29,758 INFO L429 AbstractCegarLoop]: === Iteration 1 === [threadErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 02:20:29,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 02:20:29,765 INFO L82 PathProgramCache]: Analyzing trace with hash 7247310, now seen corresponding path program 1 times [2020-10-16 02:20:29,777 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 02:20:29,777 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50168038] [2020-10-16 02:20:29,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 02:20:29,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 02:20:30,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 02:20:30,018 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50168038] [2020-10-16 02:20:30,019 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 02:20:30,020 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 02:20:30,020 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135519158] [2020-10-16 02:20:30,032 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 02:20:30,033 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 02:20:30,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 02:20:30,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 02:20:30,055 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 108 [2020-10-16 02:20:30,057 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 11 places, 9 transitions, 21 flow. Second operand 3 states. [2020-10-16 02:20:30,058 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 02:20:30,058 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 108 [2020-10-16 02:20:30,060 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 02:20:30,091 INFO L129 PetriNetUnfolder]: 5/13 cut-off events. [2020-10-16 02:20:30,091 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 02:20:30,091 INFO L80 FinitePrefix]: Finished finitePrefix Result has 27 conditions, 13 events. 5/13 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 10 event pairs, 0 based on Foata normal form. 0/9 useless extension candidates. Maximal degree in co-relation 19. Up to 8 conditions per place. [2020-10-16 02:20:30,093 INFO L132 encePairwiseOnDemand]: 104/108 looper letters, 3 selfloop transitions, 2 changer transitions 1/10 dead transitions. [2020-10-16 02:20:30,093 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 13 places, 10 transitions, 35 flow [2020-10-16 02:20:30,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 02:20:30,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 02:20:30,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 254 transitions. [2020-10-16 02:20:30,110 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7839506172839507 [2020-10-16 02:20:30,111 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 254 transitions. [2020-10-16 02:20:30,112 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 254 transitions. [2020-10-16 02:20:30,114 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 02:20:30,117 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 254 transitions. [2020-10-16 02:20:30,120 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 02:20:30,126 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 02:20:30,127 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 02:20:30,129 INFO L185 Difference]: Start difference. First operand has 11 places, 9 transitions, 21 flow. Second operand 3 states and 254 transitions. [2020-10-16 02:20:30,130 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 13 places, 10 transitions, 35 flow [2020-10-16 02:20:30,133 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 12 places, 10 transitions, 34 flow, removed 0 selfloop flow, removed 1 redundant places. [2020-10-16 02:20:30,135 INFO L241 Difference]: Finished difference. Result has 13 places, 8 transitions, 26 flow [2020-10-16 02:20:30,138 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=108, PETRI_DIFFERENCE_MINUEND_FLOW=20, PETRI_DIFFERENCE_MINUEND_PLACES=10, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=9, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=7, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=26, PETRI_PLACES=13, PETRI_TRANSITIONS=8} [2020-10-16 02:20:30,139 INFO L342 CegarLoopForPetriNet]: 11 programPoint places, 2 predicate places. [2020-10-16 02:20:30,139 INFO L481 AbstractCegarLoop]: Abstraction has has 13 places, 8 transitions, 26 flow [2020-10-16 02:20:30,139 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 02:20:30,140 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 02:20:30,140 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-16 02:20:30,140 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-16 02:20:30,141 INFO L429 AbstractCegarLoop]: === Iteration 2 === [threadErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 02:20:30,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 02:20:30,141 INFO L82 PathProgramCache]: Analyzing trace with hash 1156012467, now seen corresponding path program 1 times [2020-10-16 02:20:30,141 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 02:20:30,142 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862687561] [2020-10-16 02:20:30,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 02:20:30,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 02:20:30,236 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-16 02:20:30,236 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862687561] [2020-10-16 02:20:30,237 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 02:20:30,237 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 02:20:30,237 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794780929] [2020-10-16 02:20:30,239 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 02:20:30,239 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 02:20:30,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 02:20:30,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 02:20:30,241 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 108 [2020-10-16 02:20:30,242 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 13 places, 8 transitions, 26 flow. Second operand 3 states. [2020-10-16 02:20:30,242 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 02:20:30,242 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 108 [2020-10-16 02:20:30,242 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 02:20:30,255 INFO L129 PetriNetUnfolder]: 2/9 cut-off events. [2020-10-16 02:20:30,255 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 02:20:30,256 INFO L80 FinitePrefix]: Finished finitePrefix Result has 24 conditions, 9 events. 2/9 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 4 event pairs, 0 based on Foata normal form. 1/10 useless extension candidates. Maximal degree in co-relation 14. Up to 5 conditions per place. [2020-10-16 02:20:30,256 INFO L132 encePairwiseOnDemand]: 105/108 looper letters, 3 selfloop transitions, 2 changer transitions 0/9 dead transitions. [2020-10-16 02:20:30,256 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 14 places, 9 transitions, 38 flow [2020-10-16 02:20:30,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 02:20:30,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 02:20:30,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 249 transitions. [2020-10-16 02:20:30,259 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7685185185185185 [2020-10-16 02:20:30,260 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 249 transitions. [2020-10-16 02:20:30,260 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 249 transitions. [2020-10-16 02:20:30,260 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 02:20:30,261 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 249 transitions. [2020-10-16 02:20:30,262 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 02:20:30,263 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 02:20:30,263 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 02:20:30,263 INFO L185 Difference]: Start difference. First operand has 13 places, 8 transitions, 26 flow. Second operand 3 states and 249 transitions. [2020-10-16 02:20:30,264 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 14 places, 9 transitions, 38 flow [2020-10-16 02:20:30,264 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 12 places, 9 transitions, 34 flow, removed 0 selfloop flow, removed 2 redundant places. [2020-10-16 02:20:30,265 INFO L241 Difference]: Finished difference. Result has 13 places, 9 transitions, 34 flow [2020-10-16 02:20:30,265 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=108, PETRI_DIFFERENCE_MINUEND_FLOW=22, PETRI_DIFFERENCE_MINUEND_PLACES=10, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=8, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=6, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=34, PETRI_PLACES=13, PETRI_TRANSITIONS=9} [2020-10-16 02:20:30,266 INFO L342 CegarLoopForPetriNet]: 11 programPoint places, 2 predicate places. [2020-10-16 02:20:30,266 INFO L481 AbstractCegarLoop]: Abstraction has has 13 places, 9 transitions, 34 flow [2020-10-16 02:20:30,266 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 02:20:30,266 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 02:20:30,267 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-16 02:20:30,267 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-16 02:20:30,267 INFO L429 AbstractCegarLoop]: === Iteration 3 === [threadErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 02:20:30,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 02:20:30,268 INFO L82 PathProgramCache]: Analyzing trace with hash 1156028401, now seen corresponding path program 1 times [2020-10-16 02:20:30,268 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 02:20:30,268 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585004499] [2020-10-16 02:20:30,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 02:20:30,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 02:20:30,311 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 02:20:30,312 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585004499] [2020-10-16 02:20:30,312 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1315798430] [2020-10-16 02:20:30,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 02:20:30,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 02:20:30,390 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 3 conjunts are in the unsatisfiable core [2020-10-16 02:20:30,396 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 02:20:30,425 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 02:20:30,426 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 02:20:30,426 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2020-10-16 02:20:30,427 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943793529] [2020-10-16 02:20:30,427 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 02:20:30,427 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 02:20:30,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 02:20:30,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-10-16 02:20:30,430 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 108 [2020-10-16 02:20:30,430 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 13 places, 9 transitions, 34 flow. Second operand 5 states. [2020-10-16 02:20:30,430 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 02:20:30,431 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 108 [2020-10-16 02:20:30,431 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 02:20:30,450 INFO L129 PetriNetUnfolder]: 2/10 cut-off events. [2020-10-16 02:20:30,450 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2020-10-16 02:20:30,451 INFO L80 FinitePrefix]: Finished finitePrefix Result has 31 conditions, 10 events. 2/10 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 4 event pairs, 0 based on Foata normal form. 0/9 useless extension candidates. Maximal degree in co-relation 21. Up to 5 conditions per place. [2020-10-16 02:20:30,451 INFO L132 encePairwiseOnDemand]: 105/108 looper letters, 3 selfloop transitions, 3 changer transitions 0/10 dead transitions. [2020-10-16 02:20:30,451 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 16 places, 10 transitions, 50 flow [2020-10-16 02:20:30,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 02:20:30,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-16 02:20:30,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 331 transitions. [2020-10-16 02:20:30,455 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7662037037037037 [2020-10-16 02:20:30,455 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 331 transitions. [2020-10-16 02:20:30,455 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 331 transitions. [2020-10-16 02:20:30,456 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 02:20:30,456 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 331 transitions. [2020-10-16 02:20:30,457 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 5 states. [2020-10-16 02:20:30,459 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 5 states. [2020-10-16 02:20:30,459 INFO L81 ComplementDD]: Finished complementDD. Result 5 states. [2020-10-16 02:20:30,459 INFO L185 Difference]: Start difference. First operand has 13 places, 9 transitions, 34 flow. Second operand 4 states and 331 transitions. [2020-10-16 02:20:30,460 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 16 places, 10 transitions, 50 flow [2020-10-16 02:20:30,460 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 15 places, 10 transitions, 46 flow, removed 1 selfloop flow, removed 1 redundant places. [2020-10-16 02:20:30,461 INFO L241 Difference]: Finished difference. Result has 16 places, 10 transitions, 46 flow [2020-10-16 02:20:30,461 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=108, PETRI_DIFFERENCE_MINUEND_FLOW=30, PETRI_DIFFERENCE_MINUEND_PLACES=12, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=9, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=6, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=46, PETRI_PLACES=16, PETRI_TRANSITIONS=10} [2020-10-16 02:20:30,461 INFO L342 CegarLoopForPetriNet]: 11 programPoint places, 5 predicate places. [2020-10-16 02:20:30,462 INFO L481 AbstractCegarLoop]: Abstraction has has 16 places, 10 transitions, 46 flow [2020-10-16 02:20:30,462 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 02:20:30,462 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 02:20:30,462 INFO L255 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2020-10-16 02:20:30,675 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-10-16 02:20:30,676 INFO L429 AbstractCegarLoop]: === Iteration 4 === [threadErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 02:20:30,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 02:20:30,677 INFO L82 PathProgramCache]: Analyzing trace with hash 1068022483, now seen corresponding path program 2 times [2020-10-16 02:20:30,677 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 02:20:30,678 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564190069] [2020-10-16 02:20:30,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 02:20:30,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 02:20:30,744 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 02:20:30,744 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564190069] [2020-10-16 02:20:30,745 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [571720429] [2020-10-16 02:20:30,745 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 02:20:30,811 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 02:20:30,811 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 02:20:30,812 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-16 02:20:30,813 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 02:20:30,834 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 02:20:30,834 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 02:20:30,834 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2020-10-16 02:20:30,835 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825577522] [2020-10-16 02:20:30,835 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-16 02:20:30,835 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 02:20:30,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-16 02:20:30,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-10-16 02:20:30,838 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 108 [2020-10-16 02:20:30,838 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 16 places, 10 transitions, 46 flow. Second operand 6 states. [2020-10-16 02:20:30,839 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 02:20:30,839 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 108 [2020-10-16 02:20:30,839 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 02:20:30,863 INFO L129 PetriNetUnfolder]: 2/11 cut-off events. [2020-10-16 02:20:30,863 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2020-10-16 02:20:30,864 INFO L80 FinitePrefix]: Finished finitePrefix Result has 40 conditions, 11 events. 2/11 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 4 event pairs, 0 based on Foata normal form. 0/10 useless extension candidates. Maximal degree in co-relation 29. Up to 6 conditions per place. [2020-10-16 02:20:30,865 INFO L132 encePairwiseOnDemand]: 105/108 looper letters, 3 selfloop transitions, 4 changer transitions 0/11 dead transitions. [2020-10-16 02:20:30,865 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 20 places, 11 transitions, 66 flow [2020-10-16 02:20:30,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 02:20:30,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-10-16 02:20:30,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 413 transitions. [2020-10-16 02:20:30,868 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7648148148148148 [2020-10-16 02:20:30,868 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 413 transitions. [2020-10-16 02:20:30,868 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 413 transitions. [2020-10-16 02:20:30,868 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 02:20:30,869 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 413 transitions. [2020-10-16 02:20:30,870 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 6 states. [2020-10-16 02:20:30,872 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 6 states. [2020-10-16 02:20:30,872 INFO L81 ComplementDD]: Finished complementDD. Result 6 states. [2020-10-16 02:20:30,872 INFO L185 Difference]: Start difference. First operand has 16 places, 10 transitions, 46 flow. Second operand 5 states and 413 transitions. [2020-10-16 02:20:30,872 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 20 places, 11 transitions, 66 flow [2020-10-16 02:20:30,873 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 18 places, 11 transitions, 58 flow, removed 2 selfloop flow, removed 2 redundant places. [2020-10-16 02:20:30,874 INFO L241 Difference]: Finished difference. Result has 19 places, 11 transitions, 58 flow [2020-10-16 02:20:30,874 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=108, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=14, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=10, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=6, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=58, PETRI_PLACES=19, PETRI_TRANSITIONS=11} [2020-10-16 02:20:30,874 INFO L342 CegarLoopForPetriNet]: 11 programPoint places, 8 predicate places. [2020-10-16 02:20:30,874 INFO L481 AbstractCegarLoop]: Abstraction has has 19 places, 11 transitions, 58 flow [2020-10-16 02:20:30,875 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-16 02:20:30,875 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 02:20:30,875 INFO L255 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1] [2020-10-16 02:20:31,088 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 02:20:31,089 INFO L429 AbstractCegarLoop]: === Iteration 5 === [threadErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 02:20:31,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 02:20:31,090 INFO L82 PathProgramCache]: Analyzing trace with hash -1250544335, now seen corresponding path program 3 times [2020-10-16 02:20:31,091 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 02:20:31,091 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895939033] [2020-10-16 02:20:31,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 02:20:31,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 02:20:31,190 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 02:20:31,191 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895939033] [2020-10-16 02:20:31,194 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [915378434] [2020-10-16 02:20:31,194 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 02:20:31,258 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-16 02:20:31,258 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 02:20:31,259 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-16 02:20:31,261 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 02:20:31,315 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-16 02:20:31,315 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-10-16 02:20:31,316 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2020-10-16 02:20:31,316 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937377086] [2020-10-16 02:20:31,317 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 02:20:31,317 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 02:20:31,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 02:20:31,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-16 02:20:31,319 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 108 [2020-10-16 02:20:31,320 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 19 places, 11 transitions, 58 flow. Second operand 4 states. [2020-10-16 02:20:31,320 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 02:20:31,320 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 108 [2020-10-16 02:20:31,321 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 02:20:31,350 INFO L129 PetriNetUnfolder]: 2/10 cut-off events. [2020-10-16 02:20:31,350 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2020-10-16 02:20:31,351 INFO L80 FinitePrefix]: Finished finitePrefix Result has 42 conditions, 10 events. 2/10 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 3 event pairs, 0 based on Foata normal form. 1/10 useless extension candidates. Maximal degree in co-relation 30. Up to 5 conditions per place. [2020-10-16 02:20:31,354 INFO L132 encePairwiseOnDemand]: 105/108 looper letters, 0 selfloop transitions, 0 changer transitions 10/10 dead transitions. [2020-10-16 02:20:31,354 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 10 transitions, 68 flow [2020-10-16 02:20:31,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 02:20:31,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-16 02:20:31,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 286 transitions. [2020-10-16 02:20:31,356 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.6620370370370371 [2020-10-16 02:20:31,356 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 286 transitions. [2020-10-16 02:20:31,356 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 286 transitions. [2020-10-16 02:20:31,357 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 02:20:31,357 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 286 transitions. [2020-10-16 02:20:31,358 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 5 states. [2020-10-16 02:20:31,359 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 5 states. [2020-10-16 02:20:31,360 INFO L81 ComplementDD]: Finished complementDD. Result 5 states. [2020-10-16 02:20:31,360 INFO L185 Difference]: Start difference. First operand has 19 places, 11 transitions, 58 flow. Second operand 4 states and 286 transitions. [2020-10-16 02:20:31,360 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 10 transitions, 68 flow [2020-10-16 02:20:31,362 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 17 places, 10 transitions, 54 flow, removed 3 selfloop flow, removed 4 redundant places. [2020-10-16 02:20:31,364 INFO L241 Difference]: Finished difference. Result has 17 places, 0 transitions, 0 flow [2020-10-16 02:20:31,365 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=108, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=14, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=10, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=17, PETRI_TRANSITIONS=0} [2020-10-16 02:20:31,365 INFO L342 CegarLoopForPetriNet]: 11 programPoint places, 6 predicate places. [2020-10-16 02:20:31,365 INFO L481 AbstractCegarLoop]: Abstraction has has 17 places, 0 transitions, 0 flow [2020-10-16 02:20:31,365 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 02:20:31,577 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 02:20:31,582 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 02:20:31 BasicIcfg [2020-10-16 02:20:31,582 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-16 02:20:31,586 INFO L168 Benchmark]: Toolchain (without parser) took 5256.78 ms. Allocated memory was 252.7 MB in the beginning and 371.7 MB in the end (delta: 119.0 MB). Free memory was 208.0 MB in the beginning and 245.0 MB in the end (delta: -37.0 MB). Peak memory consumption was 82.0 MB. Max. memory is 14.2 GB. [2020-10-16 02:20:31,587 INFO L168 Benchmark]: CDTParser took 0.55 ms. Allocated memory is still 252.7 MB. Free memory is still 229.1 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-16 02:20:31,590 INFO L168 Benchmark]: CACSL2BoogieTranslator took 717.19 ms. Allocated memory was 252.7 MB in the beginning and 318.8 MB in the end (delta: 66.1 MB). Free memory was 208.0 MB in the beginning and 274.2 MB in the end (delta: -66.1 MB). Peak memory consumption was 30.4 MB. Max. memory is 14.2 GB. [2020-10-16 02:20:31,593 INFO L168 Benchmark]: Boogie Procedure Inliner took 52.35 ms. Allocated memory is still 318.8 MB. Free memory was 274.2 MB in the beginning and 271.6 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-16 02:20:31,597 INFO L168 Benchmark]: Boogie Preprocessor took 30.58 ms. Allocated memory is still 318.8 MB. Free memory is still 271.6 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-16 02:20:31,597 INFO L168 Benchmark]: RCFGBuilder took 561.19 ms. Allocated memory is still 318.8 MB. Free memory was 271.6 MB in the beginning and 249.8 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 14.2 GB. [2020-10-16 02:20:31,598 INFO L168 Benchmark]: TraceAbstraction took 3889.70 ms. Allocated memory was 318.8 MB in the beginning and 371.7 MB in the end (delta: 53.0 MB). Free memory was 249.8 MB in the beginning and 245.0 MB in the end (delta: 4.8 MB). Peak memory consumption was 57.7 MB. Max. memory is 14.2 GB. [2020-10-16 02:20:31,608 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.55 ms. Allocated memory is still 252.7 MB. Free memory is still 229.1 MB. There was no memory consumed. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 717.19 ms. Allocated memory was 252.7 MB in the beginning and 318.8 MB in the end (delta: 66.1 MB). Free memory was 208.0 MB in the beginning and 274.2 MB in the end (delta: -66.1 MB). Peak memory consumption was 30.4 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 52.35 ms. Allocated memory is still 318.8 MB. Free memory was 274.2 MB in the beginning and 271.6 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * Boogie Preprocessor took 30.58 ms. Allocated memory is still 318.8 MB. Free memory is still 271.6 MB. There was no memory consumed. Max. memory is 14.2 GB. * RCFGBuilder took 561.19 ms. Allocated memory is still 318.8 MB. Free memory was 271.6 MB in the beginning and 249.8 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 14.2 GB. * TraceAbstraction took 3889.70 ms. Allocated memory was 318.8 MB in the beginning and 371.7 MB in the end (delta: 53.0 MB). Free memory was 249.8 MB in the beginning and 245.0 MB in the end (delta: 4.8 MB). Peak memory consumption was 57.7 MB. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 226 VarBasedMoverChecksPositive, 11 VarBasedMoverChecksNegative, 3 SemBasedMoverChecksPositive, 8 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.8s, 51 PlacesBefore, 11 PlacesAfterwards, 52 TransitionsBefore, 9 TransitionsAfterwards, 352 CoEnabledTransitionPairs, 6 FixpointIterations, 23 TrivialSequentialCompositions, 18 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 5 ConcurrentYvCompositions, 3 ChoiceCompositions, 49 TotalNumberOfCompositions, 291 MoverChecksTotal - PositiveResult [Line: 695]: 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 2 procedures, 55 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 3.7s, OverallIterations: 5, TraceHistogramMax: 3, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.9s, HoareTripleCheckerStatistics: 16 SDtfs, 2 SDslu, 1 SDs, 0 SdLazy, 34 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 41 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=58occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 59 NumberOfCodeBlocks, 58 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 51 ConstructedInterpolants, 0 QuantifiedInterpolants, 729 SizeOfPredicates, 3 NumberOfNonLiveVariables, 256 ConjunctsInSsa, 13 ConjunctsInUnsatCore, 8 InterpolantComputations, 3 PerfectInterpolantSequences, 7/21 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...