/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/VMCAI2021_PN.epf -i ../../../trunk/examples/svcomp/pthread-ext/18_read_write_lock.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-11af1e5 [2020-10-09 15:15:48,933 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-09 15:15:48,935 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-09 15:15:48,958 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-09 15:15:48,959 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-09 15:15:48,960 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-09 15:15:48,961 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-09 15:15:48,963 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-09 15:15:48,964 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-09 15:15:48,965 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-09 15:15:48,966 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-09 15:15:48,967 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-09 15:15:48,968 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-09 15:15:48,968 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-09 15:15:48,969 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-09 15:15:48,970 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-09 15:15:48,971 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-09 15:15:48,972 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-09 15:15:48,973 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-09 15:15:48,975 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-09 15:15:48,977 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-09 15:15:48,978 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-09 15:15:48,979 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-09 15:15:48,980 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-09 15:15:48,984 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-09 15:15:48,991 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-09 15:15:48,992 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-09 15:15:48,993 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-09 15:15:48,994 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/VMCAI2021_PN.epf [2020-10-09 15:15:49,017 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-09 15:15:49,017 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-09 15:15:49,018 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-09 15:15:49,018 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-09 15:15:49,019 INFO L138 SettingsManager]: * Use SBE=true [2020-10-09 15:15:49,019 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-09 15:15:49,019 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-09 15:15:49,019 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-09 15:15:49,019 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-09 15:15:49,019 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-09 15:15:49,020 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-09 15:15:49,020 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-09 15:15:49,020 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-09 15:15:49,020 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-09 15:15:49,020 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-09 15:15:49,021 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-09 15:15:49,021 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-09 15:15:49,021 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-09 15:15:49,021 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-09 15:15:49,021 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-09 15:15:49,022 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-09 15:15:49,022 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-09 15:15:49,022 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-09 15:15:49,022 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-09 15:15:49,022 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-09 15:15:49,023 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2020-10-09 15:15:49,023 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-09 15:15:49,023 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2020-10-09 15:15:49,023 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2020-10-09 15:15:49,023 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-09 15:15:49,315 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-09 15:15:49,327 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-09 15:15:49,331 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-09 15:15:49,332 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-09 15:15:49,333 INFO L275 PluginConnector]: CDTParser initialized [2020-10-09 15:15:49,334 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/18_read_write_lock.i [2020-10-09 15:15:49,405 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/21d28fd59/703b4da9a2184b5fa4bfc01f2fce3f22/FLAG6520fa34d [2020-10-09 15:15:49,933 INFO L306 CDTParser]: Found 1 translation units. [2020-10-09 15:15:49,934 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/18_read_write_lock.i [2020-10-09 15:15:49,945 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/21d28fd59/703b4da9a2184b5fa4bfc01f2fce3f22/FLAG6520fa34d [2020-10-09 15:15:50,293 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/21d28fd59/703b4da9a2184b5fa4bfc01f2fce3f22 [2020-10-09 15:15:50,301 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-09 15:15:50,303 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-09 15:15:50,304 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-09 15:15:50,304 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-09 15:15:50,307 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-09 15:15:50,308 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.10 03:15:50" (1/1) ... [2020-10-09 15:15:50,311 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@483a64f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 03:15:50, skipping insertion in model container [2020-10-09 15:15:50,312 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.10 03:15:50" (1/1) ... [2020-10-09 15:15:50,320 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-09 15:15:50,357 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-09 15:15:50,866 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-09 15:15:50,885 INFO L203 MainTranslator]: Completed pre-run [2020-10-09 15:15:50,961 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-09 15:15:51,030 INFO L208 MainTranslator]: Completed translation [2020-10-09 15:15:51,031 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 03:15:51 WrapperNode [2020-10-09 15:15:51,031 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-09 15:15:51,032 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-09 15:15:51,032 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-09 15:15:51,032 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-09 15:15:51,041 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 03:15:51" (1/1) ... [2020-10-09 15:15:51,056 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 03:15:51" (1/1) ... [2020-10-09 15:15:51,079 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-09 15:15:51,079 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-09 15:15:51,079 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-09 15:15:51,080 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-09 15:15:51,089 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 03:15:51" (1/1) ... [2020-10-09 15:15:51,089 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 03:15:51" (1/1) ... [2020-10-09 15:15:51,092 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 03:15:51" (1/1) ... [2020-10-09 15:15:51,092 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 03:15:51" (1/1) ... [2020-10-09 15:15:51,097 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 03:15:51" (1/1) ... [2020-10-09 15:15:51,099 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 03:15:51" (1/1) ... [2020-10-09 15:15:51,101 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 03:15:51" (1/1) ... [2020-10-09 15:15:51,104 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-09 15:15:51,105 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-09 15:15:51,105 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-09 15:15:51,105 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-09 15:15:51,106 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 03:15:51" (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 [2020-10-09 15:15:51,164 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2020-10-09 15:15:51,164 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2020-10-09 15:15:51,164 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-09 15:15:51,164 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-09 15:15:51,165 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-09 15:15:51,165 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-09 15:15:51,165 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-09 15:15:51,166 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-09 15:15:51,579 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-09 15:15:51,580 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-10-09 15:15:51,582 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.10 03:15:51 BoogieIcfgContainer [2020-10-09 15:15:51,582 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-09 15:15:51,583 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-09 15:15:51,583 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-09 15:15:51,590 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-09 15:15:51,591 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.10 03:15:50" (1/3) ... [2020-10-09 15:15:51,592 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32d92561 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.10 03:15:51, skipping insertion in model container [2020-10-09 15:15:51,592 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 03:15:51" (2/3) ... [2020-10-09 15:15:51,592 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32d92561 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.10 03:15:51, skipping insertion in model container [2020-10-09 15:15:51,592 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.10 03:15:51" (3/3) ... [2020-10-09 15:15:51,594 INFO L111 eAbstractionObserver]: Analyzing ICFG 18_read_write_lock.i [2020-10-09 15:15:51,613 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-09 15:15:51,620 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-09 15:15:51,621 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-09 15:15:51,643 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 15:15:51,644 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 15:15:51,644 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 15:15:51,644 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 15:15:51,645 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 15:15:51,645 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 15:15:51,646 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 15:15:51,646 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 15:15:51,649 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 15:15:51,650 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 15:15:51,650 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 15:15:51,650 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 15:15:51,650 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 15:15:51,651 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 15:15:51,671 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-10-09 15:15:51,689 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-09 15:15:51,689 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-09 15:15:51,689 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-09 15:15:51,689 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-09 15:15:51,690 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-09 15:15:51,690 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-09 15:15:51,690 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-09 15:15:51,690 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-09 15:15:51,700 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 42 places, 39 transitions, 83 flow [2020-10-09 15:15:51,732 INFO L129 PetriNetUnfolder]: 1/38 cut-off events. [2020-10-09 15:15:51,732 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-09 15:15:51,742 INFO L80 FinitePrefix]: Finished finitePrefix Result has 42 conditions, 38 events. 1/38 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 16 event pairs, 0 based on Foata normal form. 0/36 useless extension candidates. Maximal degree in co-relation 26. Up to 2 conditions per place. [2020-10-09 15:15:51,743 INFO L82 GeneralOperation]: Start removeDead. Operand has 42 places, 39 transitions, 83 flow [2020-10-09 15:15:51,748 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 31 places, 27 transitions, 57 flow [2020-10-09 15:15:51,758 INFO L129 PetriNetUnfolder]: 0/26 cut-off events. [2020-10-09 15:15:51,759 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-09 15:15:51,759 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-09 15:15:51,760 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 15:15:51,760 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 15:15:51,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 15:15:51,767 INFO L82 PathProgramCache]: Analyzing trace with hash 1822071689, now seen corresponding path program 1 times [2020-10-09 15:15:51,780 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-10-09 15:15:51,780 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [64042329] [2020-10-09 15:15:51,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-10-09 15:15:51,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 15:15:51,871 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 3 conjunts are in the unsatisfiable core [2020-10-09 15:15:51,877 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 15:15:51,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 15:15:51,917 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-09 15:15:51,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 15:15:51,924 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [64042329] [2020-10-09 15:15:51,925 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-09 15:15:51,925 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2020-10-09 15:15:51,926 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931337995] [2020-10-09 15:15:51,938 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-09 15:15:51,938 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-10-09 15:15:51,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-09 15:15:51,956 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-09 15:15:51,983 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 39 [2020-10-09 15:15:51,984 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 27 transitions, 57 flow. Second operand 3 states. [2020-10-09 15:15:51,985 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-09 15:15:51,985 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 39 [2020-10-09 15:15:51,986 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-09 15:15:52,006 INFO L129 PetriNetUnfolder]: 0/32 cut-off events. [2020-10-09 15:15:52,007 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-09 15:15:52,007 INFO L80 FinitePrefix]: Finished finitePrefix Result has 44 conditions, 32 events. 0/32 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 17 event pairs, 0 based on Foata normal form. 2/33 useless extension candidates. Maximal degree in co-relation 0. Up to 6 conditions per place. [2020-10-09 15:15:52,009 INFO L132 encePairwiseOnDemand]: 36/39 looper letters, 3 selfloop transitions, 2 changer transitions 1/28 dead transitions. [2020-10-09 15:15:52,009 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 28 transitions, 71 flow [2020-10-09 15:15:52,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-09 15:15:52,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-09 15:15:52,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 103 transitions. [2020-10-09 15:15:52,025 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8803418803418803 [2020-10-09 15:15:52,026 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 103 transitions. [2020-10-09 15:15:52,026 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 103 transitions. [2020-10-09 15:15:52,028 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-09 15:15:52,031 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 103 transitions. [2020-10-09 15:15:52,033 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-09 15:15:52,039 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-09 15:15:52,039 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-09 15:15:52,041 INFO L185 Difference]: Start difference. First operand has 31 places, 27 transitions, 57 flow. Second operand 3 states and 103 transitions. [2020-10-09 15:15:52,043 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 28 transitions, 71 flow [2020-10-09 15:15:52,046 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 28 transitions, 70 flow, removed 0 selfloop flow, removed 1 redundant places. [2020-10-09 15:15:52,049 INFO L241 Difference]: Finished difference. Result has 33 places, 27 transitions, 64 flow [2020-10-09 15:15:52,053 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=64, PETRI_PLACES=33, PETRI_TRANSITIONS=27} [2020-10-09 15:15:52,054 INFO L341 CegarLoopForPetriNet]: 31 programPoint places, 2 predicate places. [2020-10-09 15:15:52,055 INFO L481 AbstractCegarLoop]: Abstraction has has 33 places, 27 transitions, 64 flow [2020-10-09 15:15:52,055 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-09 15:15:52,055 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-09 15:15:52,055 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 15:15:52,267 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-10-09 15:15:52,268 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 15:15:52,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 15:15:52,268 INFO L82 PathProgramCache]: Analyzing trace with hash 1559863116, now seen corresponding path program 1 times [2020-10-09 15:15:52,270 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-10-09 15:15:52,271 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1140308908] [2020-10-09 15:15:52,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-10-09 15:15:52,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 15:15:52,326 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-09 15:15:52,328 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 15:15:52,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 15:15:52,395 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-09 15:15:52,407 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-09 15:15:52,408 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 15:15:52,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 15:15:52,445 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1140308908] [2020-10-09 15:15:52,446 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-09 15:15:52,446 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2020-10-09 15:15:52,446 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886996466] [2020-10-09 15:15:52,449 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-09 15:15:52,450 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-10-09 15:15:52,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-09 15:15:52,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-09 15:15:52,477 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 39 [2020-10-09 15:15:52,477 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 27 transitions, 64 flow. Second operand 5 states. [2020-10-09 15:15:52,477 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-09 15:15:52,478 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 39 [2020-10-09 15:15:52,478 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-09 15:15:52,496 INFO L129 PetriNetUnfolder]: 0/29 cut-off events. [2020-10-09 15:15:52,497 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2020-10-09 15:15:52,497 INFO L80 FinitePrefix]: Finished finitePrefix Result has 44 conditions, 29 events. 0/29 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 9 event pairs, 0 based on Foata normal form. 1/29 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2020-10-09 15:15:52,497 INFO L132 encePairwiseOnDemand]: 36/39 looper letters, 1 selfloop transitions, 2 changer transitions 0/27 dead transitions. [2020-10-09 15:15:52,498 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 27 transitions, 70 flow [2020-10-09 15:15:52,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-09 15:15:52,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-09 15:15:52,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 140 transitions. [2020-10-09 15:15:52,501 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8974358974358975 [2020-10-09 15:15:52,501 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 140 transitions. [2020-10-09 15:15:52,501 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 140 transitions. [2020-10-09 15:15:52,502 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-09 15:15:52,502 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 140 transitions. [2020-10-09 15:15:52,503 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 5 states. [2020-10-09 15:15:52,505 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 5 states. [2020-10-09 15:15:52,505 INFO L81 ComplementDD]: Finished complementDD. Result 5 states. [2020-10-09 15:15:52,505 INFO L185 Difference]: Start difference. First operand has 33 places, 27 transitions, 64 flow. Second operand 4 states and 140 transitions. [2020-10-09 15:15:52,505 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 27 transitions, 70 flow [2020-10-09 15:15:52,506 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 27 transitions, 68 flow, removed 0 selfloop flow, removed 1 redundant places. [2020-10-09 15:15:52,508 INFO L241 Difference]: Finished difference. Result has 36 places, 27 transitions, 69 flow [2020-10-09 15:15:52,509 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=69, PETRI_PLACES=36, PETRI_TRANSITIONS=27} [2020-10-09 15:15:52,511 INFO L341 CegarLoopForPetriNet]: 31 programPoint places, 5 predicate places. [2020-10-09 15:15:52,512 INFO L481 AbstractCegarLoop]: Abstraction has has 36 places, 27 transitions, 69 flow [2020-10-09 15:15:52,512 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-09 15:15:52,513 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-09 15:15:52,513 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 15:15:52,716 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-10-09 15:15:52,717 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 15:15:52,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 15:15:52,718 INFO L82 PathProgramCache]: Analyzing trace with hash -1626152978, now seen corresponding path program 2 times [2020-10-09 15:15:52,719 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-10-09 15:15:52,720 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [480854635] [2020-10-09 15:15:52,720 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-10-09 15:15:52,791 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-10-09 15:15:52,792 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 15:15:52,793 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-09 15:15:52,796 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 15:15:52,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 15:15:52,814 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-09 15:15:52,822 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-09 15:15:52,823 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 15:15:52,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 15:15:52,841 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [480854635] [2020-10-09 15:15:52,841 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-09 15:15:52,841 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-10-09 15:15:52,841 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227558050] [2020-10-09 15:15:52,842 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-09 15:15:52,842 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-10-09 15:15:52,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-09 15:15:52,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-09 15:15:52,855 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 39 [2020-10-09 15:15:52,856 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 27 transitions, 69 flow. Second operand 4 states. [2020-10-09 15:15:52,856 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-09 15:15:52,856 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 39 [2020-10-09 15:15:52,856 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-09 15:15:52,866 INFO L129 PetriNetUnfolder]: 0/21 cut-off events. [2020-10-09 15:15:52,867 INFO L130 PetriNetUnfolder]: For 7/9 co-relation queries the response was YES. [2020-10-09 15:15:52,867 INFO L80 FinitePrefix]: Finished finitePrefix Result has 35 conditions, 21 events. 0/21 cut-off events. For 7/9 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 3 event pairs, 0 based on Foata normal form. 1/22 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2020-10-09 15:15:52,867 INFO L132 encePairwiseOnDemand]: 37/39 looper letters, 0 selfloop transitions, 0 changer transitions 21/21 dead transitions. [2020-10-09 15:15:52,867 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 21 transitions, 59 flow [2020-10-09 15:15:52,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-09 15:15:52,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-09 15:15:52,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 106 transitions. [2020-10-09 15:15:52,870 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.905982905982906 [2020-10-09 15:15:52,870 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 106 transitions. [2020-10-09 15:15:52,870 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 106 transitions. [2020-10-09 15:15:52,871 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-09 15:15:52,874 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 106 transitions. [2020-10-09 15:15:52,875 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-09 15:15:52,876 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-09 15:15:52,878 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-09 15:15:52,878 INFO L185 Difference]: Start difference. First operand has 36 places, 27 transitions, 69 flow. Second operand 3 states and 106 transitions. [2020-10-09 15:15:52,878 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 21 transitions, 59 flow [2020-10-09 15:15:52,879 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 21 transitions, 55 flow, removed 0 selfloop flow, removed 3 redundant places. [2020-10-09 15:15:52,880 INFO L241 Difference]: Finished difference. Result has 29 places, 0 transitions, 0 flow [2020-10-09 15:15:52,880 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=49, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=29, PETRI_TRANSITIONS=0} [2020-10-09 15:15:52,880 INFO L341 CegarLoopForPetriNet]: 31 programPoint places, -2 predicate places. [2020-10-09 15:15:52,880 INFO L481 AbstractCegarLoop]: Abstraction has has 29 places, 0 transitions, 0 flow [2020-10-09 15:15:52,881 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-09 15:15:53,088 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-10-09 15:15:53,097 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.10 03:15:53 BasicIcfg [2020-10-09 15:15:53,097 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-09 15:15:53,100 INFO L168 Benchmark]: Toolchain (without parser) took 2796.25 ms. Allocated memory was 250.1 MB in the beginning and 356.0 MB in the end (delta: 105.9 MB). Free memory was 206.7 MB in the beginning and 302.9 MB in the end (delta: -96.3 MB). Peak memory consumption was 9.6 MB. Max. memory is 14.2 GB. [2020-10-09 15:15:53,100 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 250.1 MB. Free memory is still 226.5 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-09 15:15:53,102 INFO L168 Benchmark]: CACSL2BoogieTranslator took 727.35 ms. Allocated memory was 250.1 MB in the beginning and 309.9 MB in the end (delta: 59.8 MB). Free memory was 206.7 MB in the beginning and 263.2 MB in the end (delta: -56.6 MB). Peak memory consumption was 26.8 MB. Max. memory is 14.2 GB. [2020-10-09 15:15:53,102 INFO L168 Benchmark]: Boogie Procedure Inliner took 47.54 ms. Allocated memory is still 309.9 MB. Free memory was 263.2 MB in the beginning and 260.7 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-09 15:15:53,103 INFO L168 Benchmark]: Boogie Preprocessor took 24.84 ms. Allocated memory is still 309.9 MB. Free memory was 260.7 MB in the beginning and 258.2 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-09 15:15:53,104 INFO L168 Benchmark]: RCFGBuilder took 477.58 ms. Allocated memory is still 309.9 MB. Free memory was 258.2 MB in the beginning and 231.0 MB in the end (delta: 27.2 MB). Peak memory consumption was 27.2 MB. Max. memory is 14.2 GB. [2020-10-09 15:15:53,105 INFO L168 Benchmark]: TraceAbstraction took 1513.84 ms. Allocated memory was 309.9 MB in the beginning and 356.0 MB in the end (delta: 46.1 MB). Free memory was 231.0 MB in the beginning and 302.9 MB in the end (delta: -71.9 MB). There was no memory consumed. Max. memory is 14.2 GB. [2020-10-09 15:15:53,114 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 250.1 MB. Free memory is still 226.5 MB. There was no memory consumed. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 727.35 ms. Allocated memory was 250.1 MB in the beginning and 309.9 MB in the end (delta: 59.8 MB). Free memory was 206.7 MB in the beginning and 263.2 MB in the end (delta: -56.6 MB). Peak memory consumption was 26.8 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 47.54 ms. Allocated memory is still 309.9 MB. Free memory was 263.2 MB in the beginning and 260.7 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * Boogie Preprocessor took 24.84 ms. Allocated memory is still 309.9 MB. Free memory was 260.7 MB in the beginning and 258.2 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * RCFGBuilder took 477.58 ms. Allocated memory is still 309.9 MB. Free memory was 258.2 MB in the beginning and 231.0 MB in the end (delta: 27.2 MB). Peak memory consumption was 27.2 MB. Max. memory is 14.2 GB. * TraceAbstraction took 1513.84 ms. Allocated memory was 309.9 MB in the beginning and 356.0 MB in the end (delta: 46.1 MB). Free memory was 231.0 MB in the beginning and 302.9 MB in the end (delta: -71.9 MB). There was no memory consumed. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 698]: 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, 39 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: 1.4s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 3 SDtfs, 5 SDslu, 0 SDs, 0 SdLazy, 19 SolverSat, 11 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 132 GetRequests, 125 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=69occurred in iteration=2, 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, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 69 NumberOfCodeBlocks, 69 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 132 ConstructedInterpolants, 0 QuantifiedInterpolants, 5227 SizeOfPredicates, 6 NumberOfNonLiveVariables, 193 ConjunctsInSsa, 16 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 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...